Version 2.13.3

[lttng-ust.git] / ChangeLog

2022-06-03 (National Repeat Day) (National Repeat Day) lttng-ust 2.13.3
        * Document ust lock async-signal-safety
        * Fix: don't use strerror() from ust lock nocheck
        * Fix: remove non-async-signal-safe fflush from ERR()
        * Fix: Pointers are rejected by integer element compile time assertion for array and sequence
        * Fix: statedump: invalid read during iter_end
        * Fix: bytecode interpreter context_get_index() leaves byte order uninitialized

2022-03-25 (National Waffle Day) lttng-ust 2.13.2
        * fix: __STDC_VERSION__ can be undefined in C++
        * Fix: sample discarded events count before reserve
        * Fix: ring buffer event counter
        * Fix: concurrent exec(2) file descriptor leak
        * Add 'domain' parameter to the Log4j 2.x agent
        * fix: Convert custom loglevels in Log4j 2.x agent
        * fix: coverity reported null returns in Log4j2 agent
        * Add a Log4j 2.x Java agent
        * Fix: may be used uninitialized on powerpc
        * Revert "Fix: ustcomm: serialize variant_nestable type"
        * Fix: ustcomm: serialize variant_nestable type
        * Fix: doc/examples/java-log4j: fix paths to directories
        * Fix: doc/examples/java-jul: fix paths to directories
        * Copyright ownership transfer

2021-12-10 (Lost and Found Day) lttng-ust 2.13.1
        * Fix: ust-compiler: constructor/destructor build on g++ 4.8
        * ust-compiler: constructor/destructor whitespaces layout and macro dependency
        * Fix: ust-cancelstate: include string.h for strerror
        * Fix: libnuma is prepended to LIBS
        * fix: Allow disabling some abi compat tests
        * Fix: generate probe registration constructor as a C++ constuctor
        * Fix: nestable pthread cancelstate
        * Fix: abort on decrement_sem_count during concurrent tracing start and teardown
        * fix: allocating C++ compound literal on heap with Clang
        * Check for C++11 when building C++ probe providers
        * fix: liblttng-ust-fd async-signal-safe close()
        * tracepoints: print debug message when lttng-ust-tracepoint.so is not found
        * Fix: static_assert unavailable with glibc < 2.16
        * Fix: combined tracing of lttng-ust 2.12/2.13 generates corrupted traces
        * doc/man: Document LTTNG_UST_ABORT_ON_CRITICAL variable
        * fix: remove autoconf features default value in help message
        * Set git-review branch to stable-2.13
        * Fix: add extern "C" to two header files

2021-08-02 (Ice Cream Sandwich Day) lttng-ust 2.13.0
        * No change

2021-07-16 (World Snake Day) lttng-ust 2.13.0-rc3
        * Documentation: clarify API backward compatibility comment
        * doc/man: only mention `-llttng-ust-common` in synopses (conditionally)
        * doc/man: remove vtracef() and vtracelog() manual pages
        * Remove vtracelog and vtracef from v0 compat API

2021-05-14 (National Dance Like a Chicken Day) lttng-ust 2.13.0-rc2
        * Fix: ustcomm: application name uses the '-ust'-suffixed thread name
        * Add abi0 conflict tests
        * Detect unsupported use of .so.0 and .so.1 libraries within same process
        * Add critical log level
        * Fix: shutdown communication socket on -EINVAL
        * Fix: lttng-ust control protocol handling of variable length command data
        * ustcomm: implement shutdown API
        * Fix: add missing fields in struct lttng_ust_abi_channel_config
        * Fix: liblttng-ust-ctl: keep using lttng-ust-sock-8 and lttng-ust-wait-8 filenames
        * liblttng-ust-ctl: Implement SIGBUS handling
        * Fix: Java application context: pass application context argument to callbacks
        * Fix: java application context segmentation fault
        * Add api0 compile tests
        * Move current compile tests to 'api1'
        * fix: namespacing of 'tp_rcu_read_lock'
        * Validate provider version for event enum field types
        * Validate provider version for event class
        * Add probe descriptor field to enum and event class
        * Refactoring: tracepoint: allow explicit tracepoint instance provider name
        * Fix: rename struct lttng_bytecode_runtime to struct lttng_ust_bytecode_runtime
        * Remove unused ip field from struct lttng_ust_ring_buffer_ctx_private

2021-04-23 (National Take a Chance (on me ?) Day) lttng-ust 2.13.0-rc1
        * Set the 2.13 release codename and description
        * sequence type: use previous field for length if length_name is NULL
        * tracepoint: Declare tracepoint module register/unregister API
        * configure: fix printing a description containing a comma
        * Rename lttng_ust_tracepoint_(un)register_lib
        * Rename lttng_ust_tracepoint_probe_(un)register
        * Move pkgconfig file to 'src/lib/'
        * Move the ringbuffer and counter clients to 'src/common/'
        * Move the getcpu plugin implementation to liblttn-ust-common
        * Move the clock plugin implementation to liblttng-ust-common
        * Make futex compat internal to liblttng-ust
        * Move dynamic-type to libcommon
        * Move lttng_ust_enum_get_from_desc to libcommon
        * Move lttng_ust_strerror to liblttng-ust
        * Expose a common alloc_tls for liblttng-ust-common
        * Rename all 'fixup_tls' functions to 'alloc_tls'
        * Hide symbols that shouldn't be part of the ABI
        * Hide internal tracepoint and providers data symbols
        * tracepoint: introduce macros to hide tracepoint/provider symbols
        * Namespace liblttng-ust-ctl symbols
        * Prefix public header include guards with LTTNG_UST_
        * fix: missing prefix LTTNG_UST_ for FLOAT_WORD_ORDER on FreeBSD
        * Cleanup: probe function: use __ prefixed identifiers for local variables
        * API refactoring: introduce probe context
        * Fix: move compat macros for tracepoint probes to ust-tracepoint-event.h
        * Remove unused tp_list_for_each_entry_rcu
        * Tracepoint API namespacing ctf_enum
        * Tracepoint API namespacing ctf_unused
        * Tracepoint API namespacing ctf_string
        * Tracepoint API namespacing ctf_sequence
        * Tracepoint API namespacing ctf_array
        * Tracepoint API namespacing ctf_float
        * Tracepoint API namespacing ctf_integer
        * Tracepoint API namespacing tracepoint-rcu
        * Tracepoint API namespacing ust-endian
        * Tracepoint API namespacing tracelog
        * Tracepoint API namespacing tracef
        * Tracepoint API namespacing '__lttng_ust_events_exit'
        * Tracepoint API namespacing '__lttng_ust_events_init'
        * Tracepoint API namespacing '__lttng_ust_probe_register_cookie'
        * Tracepoint API namespacing '__probe_register'
        * Tracepoint API namespacing '__probe_desc'
        * Tracepoint API namespacing '_TP_EXTRACT_STRING'
        * Tracepoint API namespacing '__get_dynamic_len'
        * Tracepoint API namespacing 'TP_IP_PARAM'
        * Tracepoint API namespacing 'TP_SESSION_CHECK'
        * Tracepoint API namespacing '__tp_stringify'
        * Tracepoint API namespacing '__event_'
        * Tracepoint API namespacing '_tp_max_t'
        * Tracepoint API namespacing '_TP_ARRAY_SIZE'
        * Tracepoint API namespacing '__LTTNG_UST_NULL_STRING'
        * Tracepoint API namespacing 'TP_ENUM_VALUES'
        * Tracepoint API namespacing 'TRACEPOINT_PROVIDER'
        * Tracepoint API namespacing 'TRACEPOINT_INCLUDE'
        * Tracepoint API namespacing 'TRACEPOINT_HEADER_MULTI_READ'
        * Tracepoint API namespacing 'TRACEPOINT_CREATE_PROBES'
        * Tracepoint API namespacing 'TRACEPOINT_MODEL_EMF_URI'
        * Tracepoint API namespacing 'TRACEPOINT_LOGLEVEL'
        * Tracepoint API namespacing 'TRACEPOINT_ENUM'
        * Tracepoint API namespacing 'TRACEPOINT_DEFINE'
        * Tracepoint API namespacing 'tracepoint_(un)register'
        * Tracepoint API namespacing '__tp_provider' and '__tp_name'
        * Tracepoint API namespacing 'TRACEPOINT_PROBE_DYNAMIC_LINKAGE'
        * Tracepoint API namespacing ctor, dtor and sections
        * Tracepoint API namespacing '_TP_NARGS'
        * Tracepoint API namespacing '_TP_EXPROTO'
        * Tracepoint API namespacing '_TP_EXDATA'
        * Tracepoint API namespacing '_TP_EXVAR'
        * Tracepoint API namespacing '_TP_COMBINE_TOKENS'
        * Tracepoint API namespacing 'LTTNG_UST_SDT'
        * Tracepoint API namespacing '__tracepoint_'
        * Tracepoint API namespacing 'tracepoint_destructors_syms'
        * Tracepoint API namespacing 'tracepoint_dlopen'
        * Tracepoint API namespacing 'TRACEPOINT_EVENT'
        * Tracepoint API namespacing 'TP_FIELDS'
        * Tracepoint API namespacing 'TP_ARGS'
        * Introduce API compatibility macros
        * tracepoint: split provider and event name
        * lttng-gen-tp: no linker flags when compiling .o
        * Fix warnings on FreeBSD
        * Add glibc gettid to wrapper
        * ust-events.h API const-ness
        * Hide lttng_ust_elf symbols
        * Disable strict-aliasing globally
        * configure: enable extended compiler warnings
        * Fix warnings on non-x86_64 systems
        * Remove -Wsystem-headers from tests
        * Initialize liblttng-ust-common in dependent libraries
        * Internal logging lazy-initialization
        * getenv: make getenv helper init state mt-safe
        * Remove duplicated 'smp' code
        * Move liblttng-ust-pthread-wrapper to 'src/lib/'
        * tracepoint: validate provider/event name length with static assert
        * Rename ringbuffer-context.h to ust-ringbuffer-context.h
        * Rename LTTNG_ALLOCATE_COMPOUND_LITERAL_ON_HEAP to add LTTNG_UST_ prefix
        * Rename lttng_ust_lib_ring_buffer to lttng_ust_ring_buffer
        * Remove unused ringbuffer-abi.h public header
        * tracepoint: namespace systemtap UST macros with LTTNG_UST_ prefix
        * Rename LTTNG_TP_EXTERN_C to LTTNG_UST_TP_EXTERN_C
        * Rename __LTTNG_COMPOUND_LITERAL to LTTNG_UST_COMPOUND_LITERAL
        * lttng_ust_static_assert: remove extra semicolons
        * Fix: statedump init/exit namespacing
        * Namespace tracepoint probes init/exit under lttng_ust_
        * Namespace lttng_static_assert to lttng_ust_static_assert
        * notification_send callback takes const event_notifier parameter
        * run_filter callback takes const event parameter
        * Fix: perform lazy initialization of getenv common lib
        * fix: remove unused include wait.h
        * Cleanup: use desc variable rather than deeply nested desc pointer
        * cleanup: LTTNG_METADATA_TIMEOUT_MSEC defined twice
        * Move liblttng-ust-tracepoint to 'src/lib/'
        * Move liblttng-ust-common to 'src/lib/'
        * Move string-utils.h to 'src/common/'
        * Move ns.h to 'src/common/'
        * Move lttng-hash-helper.h to 'src/common/'
        * Move error.h to 'src/common/'
        * Move jhash.h to 'src/common/'
        * Move creds.h to 'src/common/'
        * Move futex wrapper to 'common/compat/'
        * Split ust-events-internal.h between common and liblttng-ust
        * Move getenv to libcommon
        * Move getcpu.h to 'lib/lttng-ust/'
        * Split the common part of clock.h
        * Move wait.h to 'src/common/'
        * Rename internal ust_err to lttng_ust_logging
        * Move liblttng-ust to 'src/lib/'
        * cleanup: convenience libs at root of 'src/common/'
        * Split and move compat.h to 'common/compat/'
        * Move the mmap wrapper to 'common/compat/'
        * Move libustcomm to 'src/common/'
        * Move fd-tracker to liblttng-ust-common
        * Move libringbuffer to 'src/common/'
        * Move libcounter to 'src/common/'
        * Move liblttng-ust-ctl to 'src/lib/'
        * Move liblttng-ust-java* to 'src/lib/'
        * Move liblttng-ust-dl to 'src/lib/'
        * Move liblttng-ust-fd to 'src/lib/'
        * Move liblttng-ust-cyg-profile to 'src/lib/'
        * Move liblttng-ust-libc-wrapper to 'src/lib/'
        * Move liblttng-ust-python-agent to 'src/lib/'
        * Fix: event notifier group context leak
        * Fix: perf counter context: leak event field structure
        * Document nested type alignment field
        * Move msgpack to libcommon
        * Add an internal 'libcommon' for utils
        * Move internal headers to 'src/' dir
        * Add 'src' dir to global include path
        * Move all sources to 'src/'
        * Fix: pass private data to context callbacks
        * Fix: app contexts: do not leak app context name, event field, context field
        * Remove TRACEPOINT_INCLUDE_FILE undef
        * Remove TRACEPOINT_INCLUDE_FILE macro
        * Remove app context backward compatibility dead code
        * Cleanup: Unaligned vs aligned ring buffer access comment
        * Update unaligned vs aligned ring buffer access comment
        * Refactoring: add back constness of public API structures
        * Add 'ctf_unused' tracepoint field type
        * cleanup: explicitly mark unused parameters (-Wunused-parameter)
        * cleanup: rename template headers
        * fix: string constants (-Wwrite-strings)
        * fix: all functions have declarations (-Wmissing-prototypes -Wold-style-definition)
        * cleanup: function attribute 'always_inline'
        * cleanup: function attribute 'hidden'
        * cleanup: function attribute 'no_instrument_function'
        * cleanup: function attribute 'destructor'
        * cleanup: function attribute 'constructor'
        * cleanup: function attribute 'unused'
        * tests: benchmark: improve benchmark scalability accuracy
        * tests: benchmark: use cpu-bound workload, calculate average and std.dev.
        * tests: improve benchmark script
        * cleanup: function attribute 'format'
        * Fix: liblttng-ust-ctl: missing ring buffer and counter clients init/exit symbols
        * New API: lttng_ust_init_thread() for async-signal tracing
        * fix: redundant decl of channel_destroy (-Wredundant-decls)
        * Fix: tls-compat with hidden ring buffer context
        * Fix: tls-compat with hidden ring buffer context
        * Refactoring: hide internal fields of ring buffer context
        * Move private ABI counter client symbols to dedicated header
        * fix: add fallthrough annotations (-Wimplicit-fallthrough)
        * fix: add format attribute to relevant functions (-Wsuggest-attribute=format)
        * fix: use proper format specifiers in tests (-Wformat)
        * fix: shadowed local variable in macros (-Wshadow)
        * fix: size_t is unsigned, can't be negative
        * Import libtap from babeltrace
        * Add unit tests for utils macros
        * Add a C++ version of lttng_ust_is_signed_type
        * fix: int8_t is not considered an integer
        * Add unit tests for lttng_ust_strerror
        * Re-implement lttng_ust_strerr
        * Namespace 'lttng_alignof' to 'lttng_ust_rb_alignof'
        * Namespace remaining symbols in lttng/ringbuffer-context.h
        * Python agent lib soname major bump
        * Introduce SONAME defines
        * Namespace ust-fork symbols
        * Namespace RING_BUFFER_ALIGN macros
        * cleanup: Remove redefinition of CHAR_BIT
        * cleanup: Namespace public utils macros
        * tracepoint probe refactoring: Move provider name to provider descriptor
        * Refactoring: remove ring buffer channel pointer from struct lttng_ust_channel_buffer
        * API cleanup: Remove handle from struct lttng_ust_channel_buffer
        * Remove handle field from ring buffer context
        * ring buffer context: cpu number becomes an output of reserve
        * Fix: truncation of text array and sequences by NULL terminator
        * Cleanup: use "char" type for padding
        * compiler warning cleanup: is_signed_type: compare -1 to 1
        * Rename struct lttng_ust_channel_ops to struct lttng_ust_channel_buffer_ops
        * fix: Group Targets requires GNU Make >= 4.3
        * clock override: introduce getter API for lttng tools
        * ust-abi: add missing lttng_ust_abi prefixes
        * fix: java detection is optional
        * fix: use configured python when building the examples
        * ABI refactoring: sequence and array of text: copy input as string
        * cleanup: don't copy lttng-gen-tp in OOT builds
        * configure: convert the remaining tab indent to spaces
        * configure: regroup autoconf substituted variable
        * configure: regroup automake conditionals
        * configure: regroup C defines
        * Introduce AE_FEATURE to manage configure features
        * configure: regroup os and arch specific defaults
        * configure: regroup library checks
        * configure: regroup program checks
        * configure: regroup C header checks
        * configure: regroup and expand C compiler checks
        * configure: Introduce macro ae_in_git_repo
        * configure: centralize version information
        * Use a single macro to configure CXX
        * fix: use the configured cmake binary
        * configure: standardize automake conditional names
        * Centralize arch detection in a public header
        * Set the default ust constructor timeout in the headers
        * fix: don't override the project wide AM_CPPFLAGS
        * Add basic shell tests script framework
        * Simplify python agent build
        * port: update pthread get/set name compat
        * Fix: bytecode linker: validate event and field array/sequence encoding
        * Validate match of all session channel's UUID
        * Cleanup: Remove whiteline
        * Cleanup: align private header comments
        * Cleanup: remove old comments
        * Refactoring and fix: bytecode ABI
        * Bytecode: update documentation
        * Refactoring: bytecode interpreter ABI
        * Fix: java agent: migrate to new channel structures
        * Move event context to private structures
        * Move channel context to private structures
        * Refactoring: Channel structures
        * struct lttng_channel: split protocol ABI from instrumentation ABI
        * Remove the LTTNG_PACKED macro
        * Move public tracepoint definition headers to 'lttng/tp'
        * Namespace lttng/align.h as lttng/ust-align.h
        * Namespace lttng/bug.h as lttng/ust-bug.h
        * Namespace enum lttng_ust_bytecode_interpreter_ret flags with lttng_ust_ prefix
        * Namespace _float_mant_dig with lttng_ust_ prefix
        * Namespace enumeration structures/enum with lttng_ust_ prefix
        * ust-elf.h should be private, with public symbols
        * counter-config.h should be private
        * Fix: perf counters context: error handling on type allocation
        * Fix: lttng_ust_destroy_type: add missing free() for compound types
        * Fix: missing field name refactoring in java agent
        * Fix: replace ringbuffer-config.h by ringbuffer-context.h include
        * Add missing ringbuffer-context.h
        * Refactoring: Privatize ring buffer config header
        * Refactoring: Introduce extensibility scheme for tracepoint structures
        * Clean-up: ustctl: adapt comment to use new ABI name
        * Fix: ustctl: leak of event notifier data on communication error
        * Refactoring: UST types public interfaces
        * Refactoring: remove struct_size from struct lttng_ust_ctx_value
        * Refactoring: struct lttng_ust_channel_ops
        * Hide forward declaration of struct lttng_event_notifier_group
        * Namepace struct lttng_session with lttng_ust_ prefix
        * Cleanup: public type macros coding style
        * Cleanup: Add whitelines after struct_size fields
        * Refactoring: context structures
        * cleanup: add comments to lttng/ust-endian.h
        * Namespace 'struct channel' under 'lttng_ust_lib_ring_buffer_'
        * Move context types to private header
        * Move lttng_ust_dl_update to private ABI
        * Namespace private ABI lttng_transport_find symbol
        * Hide private lttng_session_active symbol
        * Namespace lttng_context_procname_reset public symbol
        * Remove LTTNG_HIDDEN macro
        * Hide or namespace the remaining tracepoint internal symbols
        * Refactoring: struct lttng_stack_ctx
        * Refactoring: struct lttng_bytecode_runtime
        * Move hash tables to internal header
        * Cleanup: add whiteline after struct_size field
        * Move struct lttng_counter_ops to internal header
        * Move struct lttng_enum to internal header
        * Refactoring: struct lttng_channel_ops
        * Refactoring: struct lttng_enum_desc and lttng_enum_entry
        * Refactoring: struct lttng_event_field
        * Refactoring: struct lttng_event_desc and lttng_probe_desc
        * Document public event and session structures
        * Document public event structures
        * Refactoring: combine event recorder and notifier callback functions
        * Introduce event type field in common structure
        * Refactor struct lttng_ust_lib_ring_buffer_ctx
        * Combine common recorder/notifier functions to lttng_free_event_filter_runtime
        * Rename struct lttng_event_notifier to struct lttng_ust_event_notifier
        * Refactoring: namespace ust-abi.h content under regular prefix
        * Refactor event notifier structure
        * Rename struct lttng_event_common to struct lttng_ust_event_common
        * Rename struct lttng_event to struct lttng_ust_event_recorder
        * Introduce common event structure
        * Fix: bytecode linker: iteration on wrong list head
        * Fix: re-introduce basic type serialization functions
        * Remove array, sequence, enum, struct legacy types
        * Add structure size field to struct lttng_session
        * Add structure size field to struct lttng_event
        * Refactoring: introduce session private structure
        * Refactoring: introduce bytecode runtime private structure
        * Refactoring: introduce event private structure
        * Namespace tracepoint_init and tracepoint_exit
        * Remove lttng_ust_synchronize_trace public symbol
        * Hide remaining tracer core private symbols
        * Expose liblttng-libc-wrapper malloc ctor in public header
        * Hide private context utils symbols
        * Add missing doc/man/vtracelog.3 to gitignore
        * tracef-tracelog-limitations.txt: take variadic variant into account
        * tracef.3.txt/tracelog.3.txt: always take variadic variants into account
        * doc/man/Makefile.am: handle vtracef(3) and vtracelog(3) correctly
        * tracelog.3.txt: add `vtracelog` to the "NAME" section
        * lttng-ust(3): reorganize the "Context information" section
        * Hide tls fixup private symbols
        * Hide ust_lock private symbols
        * Hide strutils private symbols
        * Hide lttng_ust_statedump private symbols
        * Hide print_op private symbol
        * Hide lttng_ust_getenv private symbols
        * counter: shrink down number of dimensions to 4
        * counters: add coalesce_hits to control API and protocol
        * liblttng-ust-fd doesn't use the internal logging system
        * Make 'lttng/ust-error.h' official API
        * Drop unused typedef t_statedump_func_ptr from API
        * README: lttng-ust does not depend on liburcu at runtime anymore
        * Move ust-events.h private structs to internal
        * Move ust-events.h private functions to internal
        * Remove forward decl for unused 'struct lttng_ust_context_app'
        * Move 'struct lttng_enabler' to private headers
        * Move 'enum lttng_client_types' to private headers
        * Move context symbols to private header
        * Remove leftover symbols from liburcu-bp compat
        * Remove unused ring buffer client callbacks symbols
        * Remove ring buffer client callbacks from public headers
        * Move lttng_ust_fixup_fd_tracker_tls to private header
        * Move perf counter symbols to private header
        * Bump liblttng-ust-ctl soname major to 5
        * fix: trailing backslash in include/Makefile.am
        * Document why the fd tracker is ABI without a public header
        * Delete unused private header ust-ctl-private.h
        * Hide private usterr-signal-safe.h symbols
        * Move internal elf macros to a private header
        * Move compat macros in 'lttng/align.h' to a private header
        * Make 'lttng/bitmap.h' a private header
        * Hide libringbuffer private symbols
        * Hide private snprintf symbols
        * Hide private ust-comm.h symbols
        * Hide private ust-snprintf.h symbols
        * Hide private share.h symbols
        * Hide private ust-dynamic-type.h symbols
        * Document why context provider is ABI without a public header
        * Use 'ust-' prefix for all global private headers
        * Move private headers out of 'lttng/' public header dir
        * Fix: lttng_event_notifier_group_error_counter_cmd does not respect caller convention
        * Move to kernel style SPDX license identifiers
        * fix: unix socket peercred on FreeBSD
        * Fix: uninitialized variable in lib_ring_buffer_channel_switch_timer_start
        * Fix: "Cleanup: clarify bytecode ownership"
        * Fix: Use unix socket peercred for pid, uid, gid credentials
        * Move and hide new 'lttng_ust_counter_create' private symbol
        * Move and hide new time_ns private symbols
        * Move and hide new 'lttng_counter_transport_*' private symbols
        * Hide new 'lttng_counter_client_percpu_*' private symbols
        * Hide new 'ustcomm_recv_*' private symbols
        * Hide new 'lttng_ust_lfht_*' private symbols
        * Hide new 'lttng_release_event_notifier_group_error_counter' private symbol
        * Hide new 'lttng_fixup_time_ns_tls' private symbol
        * Hide new 'lttng_counter_*' private symbols
        * Hide new 'lttng_ust_compat_futex_*' private symbols
        * Hide new 'lttng_ust_context_set_event_notifier_group_provider' private symbol
        * Hide new 'lttng_bytecode_*' private symbols
        * Hide new 'lttng_context_init_all' private symbol
        * Hide new 'lttng_counter_*' private symbols
        * Hide mew 'lttng_msgpack_*' private symbols
        * Hide new 'patient_writev' private symbol
        * Remove unused deprecated and backward compatibility fields
        * Remove backward compatibility for liburcu-bp
        * Cleanup: Remove deprecated symbols following soname major version bump
        * Bump soname major to 1
        * Fix: memory and fd leaks in error counter
        * Cleanup: clarify bytecode ownership
        * Cleanup: clarify ownership of excluder
        * Fix: event notifier group: fix fd leak on error
        * Fix: stream fd leaks on error
        * Fix: channel leak on error
        * Fix: lttng_abi_map_channel should be static
        * Fix: Use default visibility for tracepoint provider symbol
        * Fix: configure: support Autoconf 2.70
        * Fix: event notifier create protocol order issue
        * Fix: lttng-ust 2.13 should not try to use notifiers from 2.12 or prior probes
        * Fix: UST comm protocol: event notifier command is too large
        * Fix: incorrect parameters passed to vtracelog
        * event-notifier: Initialize `_notifier_notification` struct to zero
        * Add tests/unit/libmsgpack/test_msgpack to gitignore
        * ustctl.h: use enumeration values 0, 1 for bitness
        * ust-abi: use 0, 1 for counter enumerations
        * Cleanup: ust-abi: BITNESS_{32,64}BITS -> BITNESS_{32,64}
        * Cleanup: use tabs in ust-abi.h
        * Fix: add struct lttng_event_notifier forward declaration
        * Fix: event notifier: notification send should be a callback
        * Fix: ust-urcu: allow legacy applications without _LGPL_SOURCE
        * Fix: ust-tracepoint: make sure to expand tracepoint provider token
        * Fix: notifier: use store-release/load-acquire for error counter
        * Fix: event-notifier: Groups may not have an error counter
        * ustctl: Initialize counter_conf struct to zero
        * cleanup: use <sys/syscall.h>
        * port: fix futex_async wrapper namespacing on FreeBSD
        * port: use ust-endian.h compat
        * Fix: event-notifier: not propagating error counter indexes
        * fix: undefined symbols for tracepoints in lgpl source
        * Remove runtime dependency on liburcu shared objects
        * Fix: handle default switch case with -EINVAL in __lttng_counter_add
        * Bump LTTNG_UST_EVENT_NOTIFIER_PADDING to 32 bytes
        * Fix: memory leak in apply_context_reloc
        * Fix: libcounter bad compare
        * Fix: remove dead code in msgpack.c
        * Fix: counter: cast UINT*_MAX to 64-bit signed type before negative
        * Fix: libcounter: use LTTNG_UST_ALIGN
        * Fix: ust-abi: clarify which command is used on which object descriptor
        * Implement event notifier error counter
        * Implement libcounter
        * Implement capturing payload on event notifiers
        * bytecode: handle all integer types of dynamic contexts
        * bytecode: initialize all contexts on event notifier group creation
        * bytecode: Add `OBJECT_TYPE_{UN,}SIGNED_ENUM` type
        * Generalize `lttng_enabler_link_bytecode()` bytecode list
        * Cleanup: rename `_lttng_filter_link_bytecode()` -> `link_bytecode()`
        * Add `interpreter_funcs` to `lttng_bytecode_runtime`
        * bytecode: rename `lttng_filter_sync_state()` -> `lttng_bytecode_filter_sync_state()`
        * Implement enum and sequence capture serialization functions
        * Extract `handle_bytecode_recv()` function
        * Rename filter bytecode types and files
        * bytecode: generalize `struct lttng_ust_filter_bytecode_node`
        * Cleanup: Rename filter functions/fields to mention "filter"
        * Add `patient_writev()` function
        * Add `libmsgpack` for serializing captures
        * bytecode: allow interpreter to return any type
        * bytecode: propagate `rev_bo` of element
        * bytecode: set register type to `REG_PTR` even if not used
        * Add `lttng_bytecode_interpret_format_output()` for top of stack extraction
        * bytecode: add `REG_U64` interpreter register type
        * Implement event notifier
        * Add token to `struct lttng_ust_event`
        * Create `_for_each` function to unregister probe providers
        * Cleanup: extract function to borrow hashlist bucket
        * Decouple `struct lttng_event` from filter code
        * Cleanup: hide `lttng_ust_{filter_bytecode,excluder}_node`
        * Abstract base `lttng_enabler` to support other types of enablers
        * Rename `enum lttng_enabler_type` to `_format_type`
        * Decouple `struct lttng_session` from filter code
        * port: FreeBSD 12.2 added pthread_setname_np
        * port: tests: Add a simple unit test for shm operations
        * port: fsync(2) on a POSIX shm fd returns EINVAL on FreeBSD
        * port: set shm size with ftruncate before writing
        * fix: pass the detected CFLAGS to the C++ compiler
        * Cleanup: silent rules are always available in automake >= 1.12
        * Cleanup: Use pkg-config to detect liburcu
        * tests: Move tap-driver.sh out of the autotools aux directory
        * Enable autotools warnings as errors
        * Cleanup: separate tests between 'unit' and 'compile'
        * Cleanup: Bump autoconf required version to 2.69
        * Cleanup: Remove obsolete and unused tests
        * fix: pthread_setname_np tests to match compat behavior
        * fix: pthread_setname_np fails on longer tread names
        * Namespace lttng/align.h macros
        * Fix: remove redefinition of _GNU_SOURCE
        * Add pthread_setname_np tests
        * port: fix pthread_setname_np integration
        * Cleanup: standardise include path
        * port: no libnuma on FreeBSD
        * port: use /bin/sh in test_ust_elf
        * port: fix typo 'lttng_ust_safe_closefrom' -> 'lttng_ust_safe_closefrom_fd'
        * port: include limits.h first for CHAR_BIT
        * port: fix endian and byteswap compat on FreeBSD
        * port: Silence macro redefinition warnings on FreeBSD
        * port: fix pthread autoconf detection to support FreeBSD
        * Set version to 2.13-pre
        * Fix: ustctl_release_object: eliminate double-close/free on error
        * tests: return the proper TAP exit code
        * Add userspace time namespace context
        * Use libtool syntax in LDADD
        * Add missing files to distribution
        * Fix: python agent: 'time' has no attribute 'clock'
        * Fix: libc-wrapper: undef temporary token rather than value
        * Fix: support compile units including 'sys/sdt.h' without defining SDT_USE_VARIADIC
        * Cleanup: have interpreter functions return _DISCARD instead of 0
        * Cleanup: bytecode: typo: "s16" -> "u16"
        * doc: Explain `struct lttng_bytecode_runtime` layout restrictions
        * Fix: event probes attached before event enabled
        * Fix: use underlying types for array and sequence assertion
        * Add compile time assertion that array and sequence have integer elements
        * Implement compile time assertion macro wrapper
        * Fix: agent: read: end of loop condition should exclude 0
        * fix: Java examples CLASSPATH override
        * Add missing files to .gitignore
        * fix: Add CLASSPATH to autoconf precious variables
        * Fix: Java agent: close session daemon socket on error
        * Java agent: Use inequality for read bound check
        * Fix: Java agent: handle partial payload read
        * Fix: incorrect field accounting for dynamic type
        * ust-compiler.h: Allocate compound literals on heap with gcc <= 4.8
        * Require C++11 for building probe providers with C++ compiler
        * filter: bytecode already in the list should go before
        * Bump LTTNG_UST_ABI version from 8.1 to 9.0
        * tracepoint: Refactor representation of nested types
        * Remove has_strcpy check following probe provider version bump
        * Bump LTTNG_UST_PROVIDER_MAJOR from 1 to 2
        * ust-compiler.h: Implement __LTTNG_COMPOUND_LITERAL
        * Document dependency on liburcu >= 0.12
        * configure: add check for DEFINE_URCU_TLS_INIT
        * Cleanup: use DEFINE_URCU_TLS_INIT for all CONFIG_RCU_TLS configurations
        * Fix: namespace contexts !CONFIG_RCU_TLS variable initialization
        * Record event as soon as one filters evaluates to TRUE
        * Cleanup: ust-tracepoint-event.h: extract `__num_fields` in a variable
        * Fix: v.u.d might be uninitialized
        * Fix: Add missing vtracelog demo to make dist
        * Fix: Add missing vtracef demo to make dist
        * Introduce vtracelog
        * Introduce vtracef
        * Fix: set FD_CLOEXEC on incoming FDs.
        * Fix: tracepoint.h: Disable address sanitizer on pointer array section variables
        * Fix: jhash.h: remove out-of-bound reads
        * Fix: generation of man pages with multiple refnames
        * Cleanup: remove trailing white spaces across project
        * Fix: lttng-ust-comm.c: return number of fd rather size of array
        * liblttng-ust-comm: move `_unlock_fd_tracker()` after `close()` on error paths
        * Cleanup: liblttng-ust: change `int` flag to `bool`
        * liblttng-ust: exit loop early on event enabler match
        * Cleanup: remove redundant memory barrier
        * Cleanup: remove unused `lttng_bytecode_runtime::event` field
        * Docs: explain why unused `lttng_enabler::ctx` is kept around
        * Cleanup: remove unused `lttng_free_enabler_filter_bytecode()` func
        * Cleanup: move unused function to deprecated symbol list
        * Cleanup: remove unused `__check_ust_safe_fmt()` function
        * Cleanup: silence unused parameter `ps` warning
        * Cleanup: apply `include-what-you-use` guideline for `close()`
        * Cleanup: apply `include-what-you-use` guideline for `uint*_t`
        * Cleanup: apply `include-what-you-use` guideline for `mbstate_t`
        * Cleanup: apply `include-what-you-use` guideline for `fpos_t`
        * Cleanup: apply `include-what-you-use` guideline for `size_t`
        * Cleanup: typo: column -> colon
        * Add git-review config

2020-02-05 (National Weatherperson's Day) lttng-ust 2.12.0-rc1
        * Fix: build with -fno-common
        * Bump LTTNG_UST_ABI_MINOR_VERSION to 1
        * lttng-clear: stop tracing required
        * doc: fix build failure due to wrong whitespace character
        * doc: reformat long lines in doc/examples/Makefile.am
        * doc: pass AR when building examples
        * Require automake >= 1.12
        * Add procname to lttng_ust_statedump information
        * Docs: LTTNG-UST(3): missing references to some namespace man pages
        * Set version to 2.12-pre
        * Add pkgconfig support for liblttng-ust-ctl
        * Fix: uninitialized variable in lib_ring_buffer_reserve_committed
        * Fix: document proper liburcu version dependency
        * Fix: Add missing files to distribution
        * Add userspace vuid/vgid contexts
        * Add userspace namespace contexts
        * Fix: lttng perf counter deadlock
        * Revert "Fix: fd tracker: do not allow signal handlers to close lttng-ust FDs"
        * Fix: fd tracker: do not allow signal handlers to close lttng-ust FDs
        * Fix: fd tracker: provide async-signal-safety for close wrapper
        * Fix: Disable cancellation around fd tracker lock
        * Fix: Lock FD tracker across fork
        * doc/man: include build version in GitHub links
        * Check if the AR environment variable exists for cross compilation
        * ustctl: Implement ring buffer clear
        * Make bitfield.h C++-friendly
        * Fix: don't wait for initial statedump when 0 session active
        * Fix: wait for initial statedump before proceeding to the main program
        * Use MAP_POPULATE to reduce pagefault when available
        * Fix: remove uninitialised value
        * Fix: GCC unaligned pointer warnings
        * Fix: do not use diagnostic pragma when GCC version is lower than 4.6.0
        * Fix: missing define when not building with gcc
        * Fix: client_sequence_number may dereference NULL pointer
        * Fix: namespace our gettid wrapper
        * Fix: get tid not pid in vtid context
        * Cleanup: bitfields: streamline use of underscores
        * Silence compiler "always false comparison" warning
        * Fix: bitfield: shift undefined/implementation defined behaviors
        * Fix: Update coding style link
        * Fix: alignment of ring buffer shm space reservation
        * Fix: allocate ts_end in ringbuffer shared memory
        * Fix: timestamp_end field should include all events within sub-buffer
        * Harmonize rw_prog_cxx_works macro across projects
        * Update macros from the autoconf archive
        * ust-ctl API: clarify getter usage requirements
        * Fix: don't access packet header for stream_id and stream_instance_id getters
        * Add LTTNG_PACKED ifdefs to validate that it is defined
        * Report perf integration status at configure
        * compat: work around broken _SC_NPROCESSORS_CONF on MUSL libc
        * Code cleanup in contexts
        * doc: remove repeated word in coding style
        * tap-driver.sh: flush stdout after each test result
        * Move wait_shm_mmap initialization to library constructor
        * Fix: additional compiler barriers for procname context
        * Fix: procname context async-signal safety
        * Cleanup vtid/vpid context caches
        * Cleanup: fix typo 'acces' -> 'access'
        * Fix: Initialize fd field of struct lttng_ust_elf to -1 at allocation
        * Cleanup: test Makefiles
        * Add silent mode to examples Makefiles
        * Add silent rules support for docs
        * Use config.h to define SONAME major number
        * Use a variable to select the dlopen lib in Makefiles
        * Add hello-many to gitignore
        * Adapt lttng-ust to use multiflavor symbols from liburcu 0.11
        * Clarify lib_ring_buffer_switch_slow() requirements
        * tests: hello-many
        * Fix: sync event enablers before choosing header type
        * Fix: address shellcheck warnings/errors in example scripts
        * Fix: check for event class/instance prototype mismatch
        * Fix: race between statedump and library destructor
        * Fix: reset procname on fork in child process

2018-09-06 (Fight Procrastination Day) lttng-ust 2.11.0-rc1
        * Fix: add missing stdbool.h include
        * Move symbol preventing unloading of probe providers
        * Fix: Remove unused line from liblttng-ust-fd makefile
        * Fix: add liblttng-ust dependency to liblttng-ust-fd
        * Fix: use LIBDL/LIBC_DL to select either libdl or libc
        * Fix: lttng filter validator ERANGE error handling
        * Filter: implement dynamic typing for load object
        * Filter: add FILTER_OP_RETURN_S64 instruction
        * Perform bitwise ops on unsigned types
        * Filter: catch shift undefined behavior
        * Filter: implement bitwise lshift, rshift, not
        * Filter: index array, sequences, implement bitwise binary operators
        * Fix: AM_CONDITIONAL should be outside AS_IF block
        * Fix: build jni libs with openjdk >= 10
        * Fix: ustfork: save and restore errno in syscall wrappers
        * Fix: cache the result of getpid() internally
        * Fix: reset cached vpid context on fork
        * Fix: build example SO when PIE is enabled
        * Fix: string comparison on incorrect length in context provider
        * Support unloading of probe providers
        * Rename lttng_ust_enum_get to lttng_ust_enum_get_from_desc
        * dlopen() liblttng-ust.so from constructor to prevent unloading
        * Add probe provider unregister function
        * Cleanup: Move version numbers in separate variables in configure script
        * Remove duplicate provider name checks
        * Fix: remove for() loop initial declarations
        * Use ust_lock during sock_info operations for atomicity against fork
        * Force tracked fd to be bigger than STDERR_FILENO
        * Fix: numa: dynamically check that numa is available
        * Fix: specify SONAME in python-lttngust LoadLibrary
        * Fix: ensure fd tracker is initialized when called from constructors
        * Fix: fd of an elf object must be registered to the fd tracker
        * Cleanup: clock description for metadata was moved to lttng-sessiond
        * Fix: liblttng-ust-fd.so: override fclose symbol
        * Revert "Use initial-exec TLS model"
        * Revert "Fix: typo: DECLARE_URCU_TLS_IE -> DEFINE_URCU_TLS_IE"
        * configure.ac: add --disable-examples option to not build/install examples
        * Disable NUMA by default on 32bit arm
        * Update Makefile.am output about libnuma not found
        * Update readme to document opt dep on numa
        * numa support: allow disabling numa support
        * Update README to document dependency on libnuma
        * Take NUMA configuration into account for UST buffer allocation
        * Fix: typo: DECLARE_URCU_TLS_IE -> DEFINE_URCU_TLS_IE
        * Use initial-exec TLS model
        * lttng-gen-tp: formatting
        * Fix: lttng-gen-tp: only replace file extension
        * Fix: move fsync after ftruncate
        * Fix: sync buffer file metadata on buffer allocation
        * lttng-ust(3): reword and fix style of `LTTNG_UST_ALLOW_BLOCKING` variable
        * lttng-ust(3): specify "If set" instead of "if set to 1" for some variables
        * Fix: doc/man: use a single XSL file and match local names
        * Fix: Expand the shmobj size for the sequence number
        * Introduce LTTNG_UST_ALLOW_BLOCKING env. var.
        * Fix: lttng-ust-elf.c: define NT_GNU_BUILD_ID if not defined
        * Calculate context length outside of retry loop
        * Fix: Quote CMAKE variable assignment in Makefile
        * Rework configure script
        * Fix: Typo in doc/examples/Makefile.am
        * Fix: Don't override user variables within the build system
        * Move m4 scripts to m4 dir
        * doc: remove duplicate LTTNG_UST_BLOCKING_RETRY_TIMEOUT man page entry

2017-05-05 (International Tuba Day) lttng-ust 2.10.0-rc1
        * Clean-up: remove unused variables to silence gcc warning
        * Add ustctl_snapshot_sample_positions ustctl command
        * Cleanup: formatting in strutils_star_glob_match explanation
        * doc/man: add typical `$` and `#` prompts to command lines
        * Fix: add missing getenv.h include to ustctl.c
        * Fix: race between lttng-ust getenv() and application setenv()
        * Use SIZE_MAX instead of -1ULL for size_t parameter
        * filter: use SIZE_MAX rather than UINT_MAX and tuncating -1ULL
        * Fix: out of bound array access in filter code
        * Correctly clean all generated JAR files
        * Fix: List missing file in Java agent's Makefile
        * Support generic globbing patterns in the Java agent
        * Log more information in the Java TCP client
        * Cleanup: Remove unused import in JUL Java agent
        * Add support for star globbing patterns in event names
        * Filtering: add support for star-only globbing patterns
        * Add string utilities
        * Fix: (un)install targets of Python agent
        * Fix: include config.h to resolve HAVE_DLMOPEN
        * Validate the presence of dlmopen at configure time
        * Fix: CMake examples integration
        * doc/examples/Makefile.am: define C and C++ compilers for CMake
        * lttng-ust(3): document `lttng_ust_loaded` symbol
        * lttng-ust(3): document `perf:thread:raw:rN:NAME` context
        * lttng-ust-dl(3): update documentation
        * lttng-ust(3): document liblttng-ust-fd
        * doc/man: document the lttng_ust_lib events
        * doc/man: add full stop to descriptive table cells
        * doc/man: reorganize source for tables
        * lttng-ust(3): sort ctf_*() macro parameter definitions
        * lttng-ust(3): fix alignment and indentation
        * lttng-ust(3): document new ctf_*() array/sequence network/hex macros
        * Filter code relicensing to MIT license
        * Performance: add missing "caa_unlikely" on fast-path
        * Fix: blocking mode: add missing stdbool.h include
        * Implement LTTNG_UST_BLOCKING_RETRY_TIMEOUT
        * Fix: loglevel and model_emf_uri build fix
        * Fix: loglevel and model_emf_uri with g++ compiled probes
        * Fix: Out of tree build of liblttng-ust-java

2016-10-07 (National Frappé Day) lttng-ust 2.9.0-rc1
        * Fix: cmake example with configure based oot build
        * Fix: perform statedump before replying to sessiond
        * build: check for CXX_WORKS for cmake example
        * Implement liblttng-ust-fd
        * Introduce file descriptor tracker
        * Fix: honor send timeout on unix socket connect
        * Fix: perform TLS fixup in all UST entry points from each thread
        * Fix: build: pass configure flags to cmake example
        * Performance: implement lttng_inline_memcpy
        * Performance: mark ring buffer do_copy callers always inline
        * Performance: cache the backend pages pointer in context
        * Add ctx_len field to ring buffer context
        * ring buffer: handle shmp errors
        * Cleanup: libringbuffer: remove duplicate shmp() invocations in slow paths
        * Performance: Only dereference shmp once
        * Performance: Mark channel and buffer event disabled check unlikely
        * Performance: Relax atomicity constraints for crash handling
        * Fix: compat: -ust suffix sprintf error handling
        * Performance: disable event counting by default
        * Fix: remove unlock in getcpu
        * Performance: remove rcu read lock from ring buffer get/put cpu
        * Performance: define _LGPL_SOURCE in LGPL c files
        * Performance: split check deliver fast/slow paths
        * Fix: perf counters build against kernel headers < 3.12
        * Fix: perf counter context deadlock
        * Fix: many-events registration/unregistration speed
        * Fix: pre-fault TLS in ust-malloc instrumentation
        * Fix: ust-ctl: use LTTNG_UST_HAVE_PERF_EVENT to report perf counter availability
        * Fix: reset vtid cache before releasing urcu locks
        * Fix: cleanup local_apps.allowed flag on lib cleanup
        * Fix: Correctly handle invalid agent port file
        * Fix: memory corruption in compat.h
        * Introduce lttng_ust_loaded weak symbol
        * Revert "Introduce LTTNG_UST_LOADED environment variable"
        * Introduce LTTNG_UST_LOADED environment variable
        * Fix: remove invalid free
        * Use AC_PROG_MKDIR_P (generic mkdir -p)
        * Split CMake example build steps on different lines
        * Fix: CMake example: specify source/built includes/libs
        * configure: allow building perf support across all architectures
        * Fix: use-after-free in statedump lib iter_end
        * Add generic fallback for perf counter read
        * Fix: perf counters: sign-extend pmc register
        * doc: Add flags for JUL and python agent compiling
        * tests/hello.cxx: add ctf_enum_auto() entries
        * Add ctf_enum_auto() for autoincrementing enumeration values
        * Add missing ust_lib.c and ust_lib.h
        * dl instrumentation: add dlmopen event, trace dlopen flags
        * Add library load/unload tracking events
        * Communication protocol: use fixed-size integer rather than enum
        * Add ustctl command to regenerate the statedump
        * Implement statedump command in UST
        * tests/hello.cxx: add enumeration field
        * Fix: ctf_enum_value() does not work with g++
        * Fix: lttng context perf: missing stdbool.h header include
        * Add perf context support for ARMv7
        * Keep perf context FD open for other architectures
        * Doc: cmake example: fix coding style
        * Doc: ship cmake example with 'make distcheck'
        * Doc: add CMake example
        * configure.ac: check cmake availability
        * Only build python lib when agent is enabled
        * doc: information has no plural
        * Fix: allow non-LGPL modules to use tracepoints
        * Add -ust to the name of UST threads of the application
        * Comment the locking mechanisms in ContextInfoManager
        * Fix: Null-check return value of log4j.Category.getAllAppenders()
        * Add liblttng-ust-agent.jar to the .gitignore
        * Fix: Specify encoding when reading agent port file
        * Fix: Include child loggers in the output of "lttng list"
        * Fix: Handle both agent config files pointing to same port
        * Suppress static method warning
        * Add more logging to the LttngTcpSessiondClient
        * Use config.h to detect sched_getcpu support
        * Fix: use limits.h in ust-elf test
        * Fix: strerror_r behavior is glibc specific
        * Add support for musl libc to ust-dlfcn.h
        * Fix: don't generate 0-len array in tracepoint probes
        * Fix: log4j example: set logger level to prevent unexpected level inheritance
        * Fix: no LGPL define for malloc and pthread wrappers
        * Fix: all lttng-ust source files should be tagged _LGPL_SOURCE
        * Fix: initialize RCU callbacks with mixed LGPL/non-LGPL objects
        * Fix: incorrect structure layout with mixed LGPL/non-LGPL objects
        * Fix: don't call __builtin_return_address(0) on 32-bit powerpc
        * Update version name TBD
        * Update version to 2.9.0-pre
        * Fix: tracepoint header: declare tracepoint_dlopen_ptr
        * Fix: update debug message about weak-hidden symbols
        * Fix: tracepoint-rcu header: use tracepoint_dlopen_ptr
        * Fix: test: relax requirement on weak-hidden symbol address
        * Fix: work-around gcc optimisation oddness on 32-bit powerpc
        * Fix: test weak-hidden symbols
        * Print DBG() message about compiler weak hidden symbol behavior
        * test: add test for gcc issue with weak hidden symbol on powerpc
        * Restrict Java context retriever names to a set of valid characters
        * Fix: Correctly compute Java agent list loggers response size
        * Add support for aarch64_be
        * Fix: Fix synchronization of LTTngAgent#dispose
        * Fix: Verify number of bytes contained in sessiond agent commands
        * Fix: Avoid potential null dereference with log4j loggers
        * Specify UTF-8 encoding for all Java agent commands
        * Fix: merge tap tests stdout and stderr
        * Documentation: ring buffer: SWITCH_FLUSH can be used when active
        * Fix: unchecked return value in trace_clock_read64_monotonic
        * Fix: portability: no arith on void pointer
        * Fix: initialize build id and debug link flags to 0
        * Tests: Add tap-driver.sh for automake < 1.12
        * Fix: add "has_build_id" and "has_debug_link" fields to debuginfo events
        * Tests: Replace prove by autotools tap runner
        * bootstrap: Standardize on autoreconf -vi
        * Harmonize bootstrap script across projects
        * lttng-ust(3): order environment variables
        * lttng-ust(3): fix syntax of env. variables section
        * lttng-ust(3): document $LTTNG_HOME
        * Fix: Java agent should use LTTNG_HOME
        * Fix: examples make distcheck failure
        * Cleanup: add static for internal symbols
        * Cleanup: Remove unused max() macros from ring_buffer_frontend.c
        * Use min_t/max_t macros in lttng-ust-elf.c
        * Tests: update ust-elf tests to reflect correct memsz computation
        * Fix: erroneous computation of ELF in-memory size
        * Make code and man pages share the same default values
        * Fix: remove NULL check of nonnull parameter in dlclose
        * Tracepoint array/sequence: add nowrite hex macros
        * Tracepoint: add ctf array for network byte order integers
        * Tracepoint: add ctf sequence for network byte order integers
        * Fix: endianness of integers received by filter
        * Doc: Update README.md
        * Fix: jul and log4j agents makefile missing line and indentation
        * Fix: re-introduce exported symbols
        * Doc: update manpages for soinfo/sopath name change
        * Rename statedump and dl events and fields
        * Tests: list ust-elf test data explicitly in EXTRA_DIST
        * Tests: add tests for lttng_ust_elf_is_pic
        * Add is_pic field to statedump soinfo event
        * Fix: add common jar to lttng-ust-agent-all dependencies
        * Fix: add version to lttng-ust-agent-all jar file
        * Fix: rename liblttng-ust-agent to lttng-ust-agent-all
        * Fix: re-add liblttng-ust-agent.jar
        * Fix: lttng java agent: dispose is non-static
        * doc/man: do not use macros in the NAME section
        * doc/man: remove duplicate copyrights section
        * doc/man: lttng-ust(3): add tracing control to example
        * doc/man: lttng-ust(3): split example files in subsections
        * doc/man/common-copyrights: add missing THANKS section
        * doc/man: lttng-ust(3): add missing ENVIRONMENT VARIABLES section
        * README.md: bolden dependencies and update links
        * README.md: split required and optional dependencies
        * Convert man pages to AsciiDoc
        * Fix: remove dead code from filter interpreter
        * Fix: convey enum value signedness into metadata

2016-03-18 (Awkward Moments Day) lttng-ust 2.8.0-rc1
        * Fix: remove assertions in lttng-ust-comm init
        * Add tracepoint_disable_destructors()
        * Documentation: fix manpage typo
        * Fix: move lttng_context_is_app to core file
        * Fix: move dummy functions to common file
        * Fix: handle backward probe compatibility for application contexts
        * Fix: application context header size
        * Fix: event ctx get size should be after chan ctx
        * Clarify and simplify the Java agent "Hello" examples
        * Export the stream instance ID
        * Generate and export the sequence number
        * Add stream instance id to the packet header
        * configure.ac: print empty line after AC_OUTPUT
        * configure.ac: macros with no arguments do not need ()
        * configure.ac: standardize indentation to tabs
        * configure.ac: move AC_PROG_SED() close to other AC_PROG_*()
        * configure.ac: test -a -> shell's && (more portable)
        * configure.ac: use test "x$var" = "xyes"
        * configure.ac: AM_CONDITIONAL() accepts two arguments
        * configure.ac: use dnl at appropriate places
        * configure.ac: if -> AS_IF()
        * configure.ac: case -> AS_CASE()
        * configure.ac: add missing quotes in macro calls
        * configure.ac: use macros for version name and description
        * configure.ac: do not use shell eval for known values
        * Add CONTRIBUTING.md
        * Output "(null)" when ctf_string()'s arg is NULL
        * Fix: disable use of __builtin_return_address(0) on 32-bit PowerPC
        * Fix: java agent 32-bit pointer to jlong warning
        * Fix: Use Java 6 syntax in JUL examples
        * Fix: add missing example file to dist tarball
        * Fix: add missing header to dist tarball
        * Fix: add missing LttngContextApi.java to dist tarball
        * Pass the Java app context information using two separate arrays
        * Fix: Correctly report filter notifications on Java agent teardown
        * Add some logging to the AbstractLttngAgent
        * Fix: Clear tracked application contexts upon closing a Java agent
        * Introduce a verbose mode for the Java agent
        * Implement Java agent application context retrieval
        * Turn ISessiondCommand into an abstract class
        * Split the JNI APIs in separate classes
        * Add app context support to ust-ctl protocol
        * Handle application context cmd
        * Implement dynamic types, and application context provider support
        * Fix: handle negative range for LTTNG_UST_REGISTER_TIMEOUT
        * Fix: Ensure the Java JUL messages are correctly formatted
        * Fix: double-free on error sending fields
        * Add CTF enum type support to tracepoint event
        * Fix: missing _GNU_SOURCE define
        * python-lttngust/setup.py.in: update setup() fields
        * Refactor Python agent build and install
        * Fix: remove debugging print() call from Python agent
        * Fix: header size larger than 256 bytes
        * Python agent: Support Agent protocol v2.0
        * Fix: Java agent protocol network endianness consistency
        * Fix: examples jul: add missing files to make dist
        * Fix: Filer -> Filter typo in example
        * Fix: Return the correct list of available Java events
        * Add a toString() to Java agent's EventRule
        * Add API stubs for the Java context info retrievers
        * Receive the event filter string in the Java agent
        * Document the Java filter notification model
        * Add filter change notification mechanism to the Java agent
        * Manage complete "event rules" in the Java agent
        * Introduce a new client listener interface for the Java agent
        * Turn ILttngAgentResponse into an abstract class
        * Remove stale tests/java-jul test
        * Fix: live timer calculation error
        * Fix python agent build/install/uninstall with DESTDIR specified
        * Fix: Don't (re)define STAP_PROBEV
        * Fix: don't dereference NULL pointers
        * Cleanup: Remove unused values
        * Fix: Value stored to 'has_waited' is never read
        * Fix: Argument with 'nonnull' attribute passed null
        * Cleanup: Unnecessary bit shift
        * Clean-up: remove extraneous "found" parameters in ust-elf
        * Fix: sysconf() unchecked return value
        * doc: add Python example
        * Fix: Python agent: do not register twice to same port
        * Fix: potential leaks in error paths
        * Fix: double free in liblttng-ust-dl
        * Fix: make check in OOT build with absolute path
        * Fix: elf: leaks on error paths
        * Cleanup: coding style
        * Cleanup: elf: use off_t for offsets, size_t for len
        * Cleanup: eliminate implicit sign-extension
        * Fix: elf: NULL pointer dereference
        * Fix: add missing ust-elf.h header to dist
        * Fix: make check in out of tree build
        * Fix: old gcc warnings
        * Fix: old gcc warning
        * Fix: remove stale lttng-ust-elf.h from makefile
        * Fix: elf: uninitialized ret
        * Fix: test elf: handle NULL debug file
        * test: elf move constants to top of implementation
        * Fix: elf test prog arg checking
        * baddr statedump: remove dependency on file streams
        * baddr statedump: hold ust lock around allocations
        * Add unit tests for lttng_ust_elf
        * Add memory size, build id, and debug link info to statedump and dl
        * Fix: close socket on protocol error, sendmsg MSG_NOSIGNAL
        * Cleanup: more descriptive error message
        * Fix: add missing ust lock around objd_table_destroy()
        * Fix: application exit race with pthread cancel
        * Cleanup: configure layout for python agent detection
        * Build: python agent: use setup.py over autoconf
        * Build: add python interpreter used by python agent if built
        * Doc: basic lttng ust python agent documentation
        * Build: use AM_PATH_PYTHON to resolve python when building agent
        * Build: only check if python exists in path
        * Update version to 2.8.0-pre
        * Fix: Send the correct Java agent return code when disabling events
        * Fix: Correctly handle the command to disable all events
        * Small refactor of the Java agent's TCP client
        * Rename Java Agent event names to "event"
        * Rename Python agent tracepoint to "event"
        * Allow compiling the Java agent with Java 1.6
        * Restore concurrent build when Java agent is enabled
        * Refactor Java agent to let applications manage the log handlers
        * Doc: add LTTNG_UST_CLOCK_PLUGIN to man page
        * Doc: add LTTNG_UST_GETCPU_PLUGIN to man page
        * Cleanup: Add Javadoc to all public methods and members
        * Fix: Small fixes to the Java agent example files
        * Update doc/java-agent.txt to reflect the new packaging
        * Split Java agent library in 3 separate jars
        * Remove deprecated org.lttng.ust.jul.LTTngAgent class
        * Use tar-ustar format for the dist archive
        * Fix: remove generated file from git tree

2015-07-15 (Pet Fire Safety Day) lttng-ust 2.7.0-rc1
        * Fix: Use $enableval with AC_ARG_ENABLE
        * Fix: Cleanup local_apps sock_info in lttng_ust_cleanup
        * Fix: handle sys_futex EINTR and EWOULDBLOCK
        * Fix: update liburcu URL
        * .gitignore: ignore Python agent generated files
        * Add ctf_sequence_hex() macro
        * Fix: set soinfo_data's vdso flag correctly in base address statedump
        * Fix: running java examples out of tree
        * Fix: java class check when uudecode is not present
        * Cleanup: remove extra whitespace in configure output
        * Default to no unaligned access on unsupported archs
        * cleanup: Coding style fixes to the Java agent
        * cleanup: Mark obsolete JUL agent as @Deprecated
        * Fix compilation warnings in the Java agent
        * Fix: out of tree build of java agents
        * Fix: Use env CLASSPATH when building log4j example
        * Fix: build log4j example when enabled
        * Bump tracer version to 2.7.0-pre
        * Fix: perform volatile load of tracepoint state
        * Add demo-tracelog to gitignore file
        * Add aarch64 support to configure
        * Implement cpu_id context for filtering
        * ust cyg-profile: use same class for entry and exit
        * Fix: function instrumentation ip context
        * Fix: liblttng-ust-dl ip context
        * Remove caller field from malloc events
        * Fix: pthread wrapper ip context
        * Fix: lttng-ust-malloc ip context
        * Allow TP_IP_PARAM arg name to be configured
        * tracelog: use same class for all loglevels
        * fix tracelog namespacing of loglevels
        * Add tracelog documentation to lttng-ust(3)
        * Implement demo-tracelog example
        * Implement tracelog API
        * Fix: fetch caller address from tracef()
        * Rename helper providers and events for consistency
        * Refactor state dump system
        * Refactor Python agent
        * Fix: building probe providers with C++ compiler
        * Fix: use lttng_secure_getenv to handle env. vars. involving paths
        * Fix: Don't wait during registration if clock_gettime() fails
        * Fix: getcpu/clock plugin handle leak
        * Fix: add missing new ldl dependency for liblttng-ust-ctl
        * Fix: add missing getenv wrapper
        * Fix: add missing lttng-clock.c
        * Fix: add missing ust-clock.h
        * clock plugin example: use shift and mul
        * Implement getcpu override
        * Implement clock override plugin support
        * Add tracepoint_enabled() macro
        * Move file creation/unlink from liblttng-ust-ctl to consumerd
        * Implement file-backed ring buffer
        * Fix: oot build: missing top_builddir include
        * Fix: Mismatching code and console output in log4j example
        * Update manpage about LTTNG_UST_DEBUG effect
        * Don't output to stderr from lib unless DEBUG is activated
        * Remove usterr.h, use usterr-signal-safe.h everywhere instead
        * Fix: out-of-tree build: wrong file path for sed input
        * Fix: make dist: python agent file handling
        * Fix: java-agent: out-of-tree path to java manifest
        * Add return address to liblttng-ust-libc-wrapper
        * Fix: missing parenthesis in offset_align_floor
        * Fix: add ustctl_has_perf_counters
        * Fix: add urcu-bp TLS fixup
        * Fix: add missing poll.h include
        * Fix: get_subbuf: bound number of consumerd retry
        * Fix: man: you can't link a lib with a static lib
        * Fix: context alignment not properly handled
        * Fix: Shorthand option -cp not supported in all version of Java
        * Fix: allow tracepoints to build with --std=c99
        * Bump UST ABI for new release cycle
        * Cleanup: remove "disabled" flag for new release cycle
        * Fix: filter attach vs event enable race
        * Fix: add a configure check for weak symbols support
        * Fix coverity warning about sizeof(void **) != sizeof(void *)
        * Fix: off-by-one in sequence filter comparator
        * Fix: Java Agent JAR file symlink should be created after objects install
        * Fix: Add versioning to liblttng-ust-agent JAR
        * Fix: Warn when log4j version is too old
        * Update Java agent documentation
        * Fix: Try loading classes using the thread context class loader
        * Add Python agent support
        * Update version name

2014-10-20 lttng-ust 2.6.0-rc1
        * Add missing file to gitignore
        * Fix: preserve example files' timestamps when copying
        * Fix: Abort loading log4j agent classes when detected log4j version is too old
        * Cleanup: Remove the no longer needed liblttng-ust-jul folder
        * Fix: Wrong CLASSPATH when building liblttng-ust-java oot
        * Fix: Wrong CLASSPATH when building liblttng-ust-java-agent oot
        * Rename public structure to avoid collisions
        * Refactor liblttng-ust-jul in liblttng-ust-agent
        * Build the liblttng-ust-java library using the new M4 macros
        * Add M4 macros helpers to build Java programs
        * Modernize README using Markdown
        * Documentation: clarify event name in lttng-ust.3
        * Add cscope to gitignore
        * configure.ac: fix "missing jni.h" error message
        * Fix: remove references to trace_printf()
        * Change JUL agent to use the new ABI

2014-07-16 (Take Your Poet to Work Day) lttng-ust 2.5.0
        * Mutex while updating statedump_pending is not needed
        * Revert "Turn base address dump into experimental feature"
        * Fix: document ust_fork_mutex nesting
        * Bugfix for #745 deadlock with baddr statedump+fork
        * Move enablers syncing after the channel registration
        * Add lttng_ust_notrace to static inline functions
        * lttng ust: support ppc64le within configure

2014-06-27 lttng-ust 2.5.0-rc2
        * Fix: lttng-ust-jul: set thread in daemon mode
        * JUL: use root logger to capture events
        * Fix: Wrong configure check for UST perf event counters context support
        * Fix: multiple providers in same C file failure
        * Fix: header inclusion guard typo in lttng-ust-tracef-provider.h
        * Fix: 2.5.0-rc1 changelog has off-by-one date

2014-05-28 (International Hamburger Day) lttng-ust 2.5.0-rc1
        * Fix: out of tree build for lib Java and JUL
        * Fix: default loglevel is DEBUG
        * Fix: refuse overwrite mode buffers with less than two subbuffers
        * Fix: tracef.h: add missing c++ guard
        * Fix: remove JUL loglevel filtering from the agent
        * Fix: cleanup JUL agent state on sessiond disconnect
        * Fix: Move generated headers to the BUILT_SOURCES target
        * Fix: perf ust: check close return value
        * Cleanup: work-around missing inet.h struct mmsghdr fwd declaration
        * Implement LTTng-UST perf counters support on x86
        * Fix linking failure when cross-compiling
        * Fix: disable liblttng-ust-dl if dlinfo is not available in C library
        * Fix: pass proper args when writing commit counter
        * Fix: pad strings that are modified concurrently with tracing
        * Fix: Use $AM_CC when it is defined instead of gcc in demo-tracef
        * Revert "Fix: disable liblttng-ust-dl if dlinfo is not available in C library"
        * Fix: .split() the CC environment variable in lttng-gen-tp
        * Fix: disable liblttng-ust-dl if dlinfo is not available in C library
        * Fix: python invocation through env
        * Change default loglevel to TRACE_DEBUG_LINE
        * Fix: Override AM_PATH_PYTHON's default action-if-not-found
        * Fix: don't accept configure --disable-shared
        * Fix: configure.ac: add missing result to alignment req. check
        * Fix: malloc wrapper: infinite recursion with compat TLS
        * Fix: lttng-ust needs -ldl for tracef()
        * Fix: typo in lttng-ust.3
        * Fix: liblttng-ust-libc-wrapper recursive use of calloc
        * Fix: add demo-tracef to dist tarball
        * Fix: add missing header files for tracef
        * Implement tracef() instrumentation API
        * Add 'unused' attribute to tracepoint callback
        * Use autoconf AM_MAINTAINER_MODE
        * Fix: mismatch between code and comments
        * Fix: incorrect urcu git URL in README

2014-02-28 (Public Sleeping Day) lttng-ust 2.4.0
        * Fix: JUL test: update to API change
        * Fix: Cast from pointer to different integer size warning
        * Turn base address dump into experimental feature
        * Fix: JUL support multiple loglevels
        * Fix: Skip lttng-gen-tp example build if Python is missing
        * Fix: dynamically fetch the session daemon port
        * Fix: JUL agent connect to user and root sessiond
        * Fix: handle registration done command
        * Fix: Unsynchronized access in LTTngTCPSessiondClient
        * Cleanup: fix comment
        * Fix: Dump executable base-address with readlink
        * Fix: add assert for NULL dereference
        * Fix: tracepoint out of memory handling
        * Fix: dereference before null check
        * Cleanup: remove logically dead code
        * Fix: handle sysconf errors
        * Fix: java-jul/Makefile should not be marked as a binary

2014-02-14 lttng-ust 2.4.0-rc4
        * Cleanup: remove extra space in dlerror wrapper
        * Fix: work-around glibc lying about dlsym()/dlerror() leafness
        * Cleanup: add lttng_ust_malloc_wrapper_init prototype to header
        * Fix: malloc libc instrumentation wrapper
        * Fix: add LTTngEvent class to fix delayed logger
        * Fix: FD leak in liblttng-ust-ctl
        * Fix: liblttng-ust-dl Makefile flags mismatch
        * Fix: liblttng-ust-fork Makefile flags mismatch
        * Fix: out of tree examples build
        * Fix: C++: incomplete extern C guard transition

2014-01-29 lttng-ust 2.4.0-rc3
        * Fix: add missing JUL loglevel handling
        * Cleanup gen-tp: add quotes around AM_CC
        * Pass the CC variable to the example Makefiles
        * cleanup ust_baddr and ust_baddr_statedump doc
        * baddr: add ust_baddr and ust_baddr_statedump doc
        * Fix: baddr_statedump tracepoint registration
        * Fix: baddr out of tree build

2013-12-10 lttng-ust 2.4.0-rc2
        * Fix: baddr_statedump tracepoint registration
        * Fix: baddr deadlocks and RCU races
        * Fix: lock exit mutex when creating threads
        * Fix: baddr deadlock with lttng-ust destructor
        * baddr: include missing header
        * baddr: get session under lock
        * Fix: take the ust lock around session iteration in statedump
        * Fix: baddr_statedump deadlock with JUL tracing
        * Fix: client_packet_header() uses wrong packet
        * Cleanup: fix typo in ring buffer backend comment
        * Compile liblttng-ust-baddr c files into liblttng-ust
        * Allow suppressing of base-address-state tracing
        * Integrate base-address statedump into lttng-ust
        * Fix: eliminate timestamp overlap between packets
        * Fix: lttng-gen-tp to build out of tree
        * Fix: compile doc/ after JUL/Java
        * JUL: add Hello.java in doc/examples
        * Fix lttng-ust(3) manpage
        * JUL: fix enable all event for delayed Logger
        * Fix: typo in JNICALL for the JUL tracepoint
        * Fix: move va_end to outermost label
        * Fix: add missing NULL check after allocation
        * Fix cleanup: all spaces before flags
        * fix: lttng-gen-tp: add missing spaces around flags

2013-11-15 lttng-ust 2.4.0-rc1
        * doc/examples: error out when a subdir make fails
        * JUL: fix out of tree build
        * Java/jul: fix make dist
        * JUL: install documentation and jar file
        * Add missing copyrights to test scripts
        * Escape minus signs in lttng-ust-cyg-profile manpage
        * Fix spelling mistake in lttng-ust manpage
        * Fix tests/benchmark
        * Implement base-address-state tracing
        * Base-address tracing for dlopen and dlclose
        * Add a check against excluders
        * Add handler for LTTNG_UST_EXCLUSION in UST ABI
        * Store exclusions to enablers
        * Add excluders to enabler structure
        * Send exclusion data through ustcomm
        * Define exclusion structure for UST ABI
        * Define a new command LTTNG_UST_EXCLUSION
        * Fix: package of LTTngUst.h was renamed without renaming target in makefile
        * Fix: check for java .class in package subfolders
        * Fix: java library to use user define JDK at compile time
        * Add liblttng-ust-jul for JUL support
        * Fix: application SIGBUS when starting in parallel with sessiond
        * Fix: Minor corrections to the lttng-ust man page
        * Documentation cleanup: Overhaul of the lttng-gen-tp man page
        * Warning cleanup: add missing padding initializer
        * Fix: socket connect hang on heavy loads
        * Cleanup: fix typo
        * Fix: ust-comm recvmsg should handle partial receive
        * gcc warning fix: -Wextra
        * Add usage reference count for tracepoints
        * tracepoint.c: Move add_callsite/remove_callsite further down in file
        * Store the callsites into the library callsite list
        * Fix linking warning
        * Per-stream ioctl to get the current timestamp
        * LTTng ringbuffer ABI calls for index generation
        * Specialize lttng_ust_lib_ring_buffer_client_cb
        * Add tracing instrumentation for pthread mutex lock functions

2013-09-03 lttng-ust 2.3.0
        * No change

2013-08-30 lttng-ust 2.3.0-rc2
        * doc/examples/gen-tp: pass automake CPPFLAGS/CFLAGS/LDFLAGS
        * tools/lttng-gen-tp: honor CPPFLAGS and LDFLAGS
        * Fix: doc/examples cross-build
        * Fix: liblttng_ust.la should depend on liblttng-ust-tracepoint.la
        * Introduce configure --with-lttng-system-rundir
        * examples: tracepoint probes don't need extern C
        * Tracepoint probes don't need extern C
        * Add trace support for memalign and posix_memalign
        * malloc instrumentation: remove dependency on pthread
        * Add trace support for calloc and realloc.
        * Fix: allow make check to run in VPATH build
        * Update .gitignore
        * Update obsolete benchmark test
        * Cleanup tests (2nd commit)
        * Cleanup tests
        * Fix: doc/examples VPATH build

2013-07-17 lttng-ust 2.3.0-rc1
        * Fix: Unchecked asprintf/vasprintf return values
        * Missing NULL pointer init in tap.c
        * Disable doc/examples build
        * Add python3 support to lttng-gen-tp
        * Bump ABI major to 5
        * callsite: add "ip" context
        * Allow environment variable LTTNG_HOME to override HOME
        * Fix: libs order in Makefile
        * Fix: ring buffer: get_subbuf() checks should be performed on "consumed" parameter
        * Introduce ustctl_write_one_packet_to_channel
        * build: Fix out-of-tree build
        * Fix: SWITCH_FLUSH new sub-buffer checks
        * Fix: ring buffer: handle concurrent update in nested buffer wrap around check
        * Cleanup: lib_ring_buffer_switch_new_end() only calls subbuffer_set_data_size()
        * Fix: doc/examples: gen-tp path
        * Revert "Cleanup: ring buffer: remove lib_ring_buffer_switch_new_end()"
        * Fix: handle writes of length 0
        * Cleanup: ring buffer: remove lib_ring_buffer_switch_new_end()
        * Fix: lttng-events VPATH build
        * Allow #include in template (.tp) file
        * tests/hello.cxx: rename tp.cpp into tp-cpp.cpp
        * doc/examples: build gen-tp example by default
        * doc/examples: support BSD make
        * Tracepoint.h: replace assertion by fprintf and abort()
        * Remove unused assert.h from bitfield.h
        * Clarify probe registration documentation/errors
        * Fix: Check C++ designated initializers support before compiling 'hello.cxx' test
        * Add mising include in ust.h
        * lttng-gen-tp: Fix include guard name with file using non valid characters
        * Fix: segfault when print invalid command
        * Fix: Add --no-as-needed to the demo example's Makefile
        * zmalloc: attribute always_inline
        * Fix: liblttng-ust process startup hang when sessiond is stopped
        * Move include directive from CFLAGS to LOCAL_CPPFLAGS in examples' Makefiles
        * Allow tracepoint providers to be compiled with g++
        * Add parameter -f to rm in Makefile clean target
        * Fix: missing dependency for liblttng-ust-tracepoint.so
        * Remove 0.x TODO
        * Add warning about default prefix and library paths to README
        * Revert "Revert "Fix (another) linker library order""
        * Revert "Revert "Fix linker library order""
        * snprintf: play nice with static checker
        * tracepoint.c: Add coverity alloc/free annotations
        * Fix: "fields" leak on register
        * Fix: memory leak for events without fields
        * Fix: memory leak on connection reset
        * Revert "Fix linker library order"
        * Revert "Fix (another) linker library order"
        * Fix: incorrect support for multi-context
        * Fix (another) linker library order
        * Fix typo in run script
        * Fix linker library order
        * Fix examples: add missing CPPFLAGS
        * example Makefiles: standardize on $^ for linking
        * Fix demo example Makefile
        * Move "hello-static-lib" to doc/examples and add non-automake Makefiles

2013-05-09 lttng-ust 2.2.0-rc2
        * manpage: Document probe provider compatibility
        * Fix: add provider ABI compatibility check
        * Cleanup: ignore mktemp return value
        * Cleanup: documentation: argument vs field
        * Documentation: document undefined behavior for NULL pointers
        * Cleanup: silence cppcheck error
        * Fix: add internal mutex for timer
        * 32-bit warning fix for cyg profile fast
        * Fix warnings for 32-bit in lttng-ust-cyg-profile
        * Typo fix in README
        * Fix: tracepoint.h incorrect assumption about constructor order
        * Cleanup: comment mismatch with code
        * Fix: ABI breakage between 2.1 and 2.2-rc1
        * Documentation: document that sequence len field is unsigned
        * connect: don't report EACCES
        * connect: don't print error on EPERM
        * Bump liblttng-ust-ctl lib version major number
        * Optimisation: implement callsite hash table in tracepoint.c
        * Optimisation: only update added library in tracepoint.c
        * Optimisation: only fix pending events once per lazy update

2013-03-28 lttng-ust 2.2.0-rc1
        * Fix: tracepoint instrumentation constructor order issue
        * Documentation: update 2.0 to 2.x
        * Add demo test back as an example
        * Don't rely on explicit context for filtering
        * Implement per-context filtering
        * Fix: filter string comparison should check for literal
        * update tests/demo readme file
        * Add man page for lttng-ust-cyg-profile
        * Fix: filter string wildcard comparison
        * Fix: Remove test runner script
        * Fix: forwarding of call_site argument to field
        * Add demo README
        * Tests: Use Perl prove as the testsuite runner
        * Remove tests depending on consumerd
        * Convert hello.cxx test to a build test
        * Clean-up of configure.ac and tests/Makefile.am
        * Fix snprintf test and output result to TAP format
        * Replace same_line_marker test with same_line_tracepoint
        * Remove tests-libustinstr-malloc
        * Remove exit-fast test
        * Remove fork test
        * Remove daemon test
        * Remove demo test
        * Remove outdated test-nevents test
        * Remove outdated simple_include test
        * Remove outdated register_test test
        * Convert hello-static-lib test to a build test
        * Convert hello test to a build test only
        * Remove outdated libustctl_function_tests test
        * Remove outdated test hello2
        * Remove outdated dlopen test
        * Remove outdated test basic long
        * Remove outdated test basic
        * cyg_profile: implement fast and verbose .so
        * Performance: add unlikely to tracepoint dynamic linking test
        * Fix: _LGPL_SOURCE rcu dereference fix
        * Implement liblttng-ust-cyg-profile function entry/exit instrumentation
        * Minor fix: libc wrapper internal run script
        * Fix: ustctl_recv_register_event pointer mixup
        * Fix: allow enabling same events for two channels
        * Add channel ID field to attr
        * Remove useless else clause
        * tracepoint: move "probe" test outside of loop
        * Fix uninitialized has_loglevel variable
        * Fix clang warnings
        * Cleanup: work-around clang unused result warning
        * Cleanup compile warning
        * Cleanup: remove unused variables
        * tracepoint: Don't add NULL probes
        * Remove mention of locking issues associated with dlopen usage
        * Implement read timer (for RT)
        * Only flush when there are readers active
        * Add mutex for channel wakeup fd update
        * Fix: fields should be initialized to NULL
        * Implement ustctl_duplicate_ust_object_data
        * Add channel wakeup fd to monitor close
        * Fix: refcount issue in lttng-ust-abi.c
        * Fix: only consumerd should print errors
        * Implement ring buffer periodic buffer switch timer
        * Fix: ensure all probe providers have their symbols
        * Reactivate error printing
        * Unregister tracepoint probes when not needed
        * Cleanup: remove now unused metadata code from UST
        * Fix: notification timeout logic
        * Fix: don't print error in comm proto connect on ENOENT
        * Fix: return expected error return values for sessiond
        * Fix: set wait/wake fd to -1 before close
        * Fix: Only notify socket should have timeout/nonblock
        * Fix: ustctl: return -EPIPE to sessiond if connection is closed
        * Fix: Add timeout on notification socket
        * Remove now unused metadata printf code
        * Move metadata creation into lttng-sessiond and lttng-consumed
        * Add write metadata API to ust-ctl.h
        * Move UST registry into sessiond and implement notifiers
        * Fix: don't flush-final for offset 0 if reader is on sub-buffer
        * Use tp rcu link test in provider
        * Remove direct dependency of probes on urcu-bp
        * Use urcu tls-compat.h
        * Lazy provider registration
        * Always use lttng_get_probe_list_head to get probe list
        * Fix static build
        * Move LTTng-UST buffer ownership from application to consumer
        * Fix package: don't distribute generated headers
        * Fix: don't cancel already exited threads
        * Scalability fix: tracepoint.c hash table size increase
        * Scalability fix for many events: event hash table size
        * Speed up probe registration for large amount of events
        * Add missing demo-trace shell script to dist tarball
        * Documentation: add uuid package name for Fedora in README
        * Fix: missing test for lttng_ust_comm_should_quit in lttng-ust-comm.c
        * Add compilation support for Tile architectures
        * Documentation: clarify debian package name for uuid in README
        * Fix: comment in ust-ctl.h
        * Fix I/O-related error values in ustctl
        * Introduce hash table for lttng_create_event_if_missing()
        * Fix: don't build C++ example if a C++ compiler isn't available
        * Remove LIBFORMAT output in configure.
        * Document dependency on libuuid

2012-12-20 (13th Baktun) lttng-ust 2.1.0
        * Bump liblttng-ust-ctl lib version major number
        * Bump UST proto version minor number
        * Helper to debug: add object name
        * Tests: Fix rundir not created in ust-basic-tracing
        * ust test: add missing return -1
        * Test: update ust tracing unit tests to 2.1 internal ABI
        * Tests: Fix rundir not created in ust-multi-test
        * Adapt internal files and examples to TRACEPOINT_INCLUDE
        * Adapt tests to TRACEPOINT_INCLUDE
        * Cleanup: tests remove hello.cxx/ust_tests_demo.h
        * Fix: don't do macro expansion in tracepoint file name
        * Fix lttng-gen-tp: Template file must end in .tp
        * Pack structures in comm protocol between UST and sessiond
        * Cleanup lttng-gen-tp: Help not showing when using -h,--help
        * Cleanup lttng-gen-tp: remove leading underscore before include guard
        * fix memleak: ustctl free shadow chan on ustctl_unmap_channel()
        * Update license text
        * Fix: check if event enabled for bytecode-less events
        * Fix: handle enablers without bytecode
        * Print probe provider mismatch error even without -Wsystem-headers
        * filter: Add missing padding

2012-11-22 lttng-ust 2.1.0-rc2
        * filter interpreter cleanup: use uint64_t for retval
        * Fix: filter linking can dereference NULL pointer on alloc failure
        * Cleanup: remove whitespaces and EOL in tests
        * Filter: use only single lower bit of filter return value
        * Fix: filter: var len array at end of external structure
        * Fix: filter link fail handling
        * Fix: add missing seqnum field to filter
        * filters: perform union rather than intersection
        * Implement support for overlapping wildcard/events
        * Cleanup: add lttng_/lttng-/LTTNG_ prefixes
        * filter: add seqnum field to filter command
        * Filter iteration: iterate on list of filters
        * document that tracepoint names should ideally not be re-used
        * Remove LIBFORMAT config declaration, unused
        * Add libc errno translation layer to UST error code
        * Fix: add const qualifier for filter local void *
        * Fix: re-allow non-lvalue string, sequence, array parameters
        * Tear down handles associated with a closed sessiond socket
        * Distinguish UST return codes from transport return codes
        * Fix: Conditionally disable tests requiring shared libs support
        * Cleanup: don't spawn per-user thread if HOME is not set
        * Manpage: document supported UST contexts
        * Fix: procname context semantic
        * Fix: Fix self-assign warning on struct ustfork_clone_info init
        * Fix: memcpy of string is larger than source
        * Implement liblttng-ust-fork daemon() override test
        * liblttng-ust-fork: override daemon() call
        * ustfork: set errno to ENOSYS if symbol lookup fails
        * Fix: be quiet on filter linker error
        * Build out of src tree
        * Fix: filter bytecode specializer stack leak
        * Fix: reloc offset validation error out on filters with no reloc table
        * Perform calculation on bit size in 64-bit
        * Use uint64_t for packet header content size and packet size
        * Fix: manpage typo "-lllttng-ust" -> "-llttng-ust"
        * Fix: BSD getprogname null pointer dereference
        * Add support for model.emf.uri event info
        * Filter error message cleanup
        * Manpage update: document use in daemons
        * Fix: get_wait_shm() ust mutex deadlock (add 2 missing exit calls)
        * Fix: get_wait_shm() ust mutex deadlock
        * Fix: add events with 0 field to field list

2012-09-10 lttng-ust 2.1.0-rc1
        * Fix make dist: fix liblttng-ust-java dependencies
        * Fix make dist: add missing filter header
        * Fix: backward compatibility with UST 2.0 app probes
        * Fix: Filter ABI changes to support FILTER_BYTECODE_MAX_LEN (65536)
        * Export "written" information about fields
        * Fix filter: pointer to string, not string, should be on stack
        * Fix: tracepoint float nowrite
        * Fix: accept 65536 bytes long bytecodes
        * Add hostname to env
        * ABI change: bump internal version to 3.0.0
        * Fix: threads should be created in DETACHED state
        * Fix: 32-bit x86 strict-aliasing warnings
        * Fix UST SIGPIPE handling
        * Fix: Libtool fails to find dependent libraries when cross-compiling lttng-ust
        * Cleanup: filter: turn bytecode linking error msg into debug
        * Make lttng-ust robust against -finstrument-functions.
        * Filter: keep aliased ax and bx registers
        * Filter: remove interpreter dynamic typing
        * Filter: add missing specialized op names
        * Filter: specialize double-s64 binary comparators
        * Fix filter: fix stack leak on taken branch
        * Filter: Implement stack-based interpreter
        * Filter: double comparator produces s64
        * Filter: use hash table to check merge points
        * Filter: split passes into separate components
        * Filter: cleanup macros
        * Filter: validate range overflow with end of insn
        * Filter: validate that field ref strings are non-NULL
        * Filter: ensure logical operator merge is always s64
        * Filter: we don't care if double/s64 are literals
        * Filter: specialize 'and' and 'or' ops.
        * Implement dispatch-table based interpretor
        * Filter: Specialize unary operators
        * Define switch use as macro in interpreter
        * Filter interpreter: mark float test as unlikely
        * Filter: fix bytecode validation typo
        * Filter: specialize comparators
        * Specialize load and unary ops
        * Validate registers, no need to initialize to 0
        * Filter: opcode for ref loads
        * Remove redundant validation from interpreter
        * filter: Add bytecode validation pass
        * TRACEPOINT_EVENT: add *_nowrite fields for filter
        * Only print filter errors if LTTNG_UST_DEBUG is set
        * Cleanup: remove debug define
        * Filter: add floating point support
        * Remove filter test printouts
        * Implement filter bytecode interpreter and linker
        * Filter: receive, attach and link empty filter
        * Filter: prepare filter stack data
        * Wrap dynamic len array into stackvar union
        * liblttng-ust-comm/lttng-ust-com.c: remove unnecessary goto in ustcomm_accept_unix_sock()
        * liblttng-ust/lttng-ust-comm.c: fixing typo.
        * Fix: remove unused texinfo dep from configure.ac
        * Fix C99 strict compatibility: don't use void * for function pointers
        * Fix c99 compatibility: tp_rcu_dereference_bp() should not use braced-groups within expressions
        * Revert "Fix c99 compatibility: tp_rcu_dereference_bp() should not use braced-groups within expressions"
        * Fix c99 compatibility: tp_rcu_dereference_bp() should not use braced-groups within expressions
        * Fix: perform TLS fixup of nest count outside of UST mutex
        * Fix: liblttng-ust-fork deadlock
        * Fix: handle pthread errors
        * Fix: local apps allowed should disable local (not global) tracing
        * Fix strict ISO-C compatibility for ust-tracepoint-event.h public header
        * Fix: support -std=c99 in tracepoint macros
        * Fix c99 compatibility: use __typeof__ instead of typeof in public headers
        * hello test: fail on old style definition
        * Fix: tracepoint.h should not generate old-style definitions
        * Fix: don't define variables in headers
        * test "hello": add boolean test
        * Fix: perform macro expansion on tracepoint signatures
        * UST check pointer/de-reference order
        * Fix list field: handle error
        * Implement event fields listing
        * Implement field listing command
        * Fix: Block all signals in listener thread
        * Add CodingStyle document to tarball
        * Add coding style document
        * endian.h: support cygwin
        * align.h: support cygwin page size
        * Add cygwin support to libringbuffer getcpu.h
        * Add "2x int" and "2x long" types to the Java interface
        * Add Integer and Long tracepoint types to the Java interface
        * Fix: don't SIGBUS when filesystem is full
        * tracepoint: include stdio.h for NULL definition
        * manpage update: document that probes need gcc
        * Fix: remove # in front on extern "C" {
        * Cleanup: don't use GNU old-style field designator extension
        * Fix: remove padding field after variable sized array
        * Use unsigned long type for events discarded counter
        * Fix: getcpu build with modern uClibc versions
        * Fix: lttng-ust.pc needs to specify -ldl
        * Fix: examples Makefiles should pass $(LIBS) at last
        * Build a jar for the Java side of the JNI interface
        * Fix: ustctl need to send the second fd upon error of 1st fd
        * Fix: Add missing fork test program dependency library
        * Fix: Make the JNI interface actually work
        * Merge branch 'dev'
        * Fix: stringify version description

2012-03-29 lttng-ust 2.0.1
        * Use bsd-compatible fcntl for close-on-exec on socket
        * Fix multi-session wildcard support
        * Fix event lost count when buffer is full
        * Remove inappropriate \n from easy-ust sample

2012-03-20 lttng-ust 2.0.0
        * First STABLE version
        * Add version name

2012-03-20 lttng-ust 2.0.0-rc4
        * Fix out-of-bound write in ltt-events.c
        * Document LTTNG_UST_DEBUG_VALGRIND compilation flag
        * Update COPYING
        * Add exception handling to lttng-gen-tp io operations

2012-03-16 lttng-ust 2.0.0-rc3
        * Fix: sendmsg should retry on EINTR, and use MSG_NOSIGNAL
        * fix: ustcomm_close_unix_sock should close, not shutdown
        * Fix: do not print EPIPE perror, as it is an expected error
        * Ensure that multiplication of clock offset is done on 64-bit
        * Add 2 missing licenses in deprecated tests
        * Remove unbuild and unused (deprecated) make_shared_lib test
        * License text standardization, add missing licenses
        * Cleanup: remove duplicate check for 0 num_subbuf and subbuf_size
        * Fix: power of 2 size check should apply to size_t type, not uint32_t
        * Fix: recvmsg should handle EINTR
        * Make lttng-gen-tp work on python 2.6
        * Make lttng-gen-tp executable

2012-03-02 lttng-ust 2.0.0-rc2
        * Manpage fixes
        * Fix: dmesg printout should not print metadata warnings
        * Fix: use transport name as channel name
        * Fix: Add signature check in tracepoint activation
        * Fix: add tracepoint signature at tracepoint definition site
        * Fix: keep event probe signature, for use by event probe signature check
        * Fix ABI: add padding to structures shared between UST and consumer
        * Fix ABI: add padding to tracepoint and ring buffer config public structu
        * Fix ABI: Adding missing padding in tracepoint event structures
        * Fix: Add include/lttng/ust-config.h to git ignore
        * Fix effect: update README about dlopen()
        * Fix: fixup vtid TLS
        * Fix: fixup ringbuffer tls at constructor by forcing read
        * Fix: fix deadlock with dlopen() lttng-ust
        * Fix: only print event errors every 1048576 hits
        * Fix: add missing debug printout to identify the cause of lost events
        * fix: liblttng-ust-ctl should check for incorrect parameters
        * fix: ust comm error handling segfault
        * Fix: Return -EINVAL instead of print warning if non power of 2 size/num_
        * fix: on exit, leave thread/mmap reclaim to OS
        * fix: Handle sys_futex with async cancel, add missing pthread_join
        * fix: Only munmap the wait page when not exiting from process
        * Use CPPFLAGS instead of CFLAGS for -I
        * Fix type range comparison always false for 64-bit arch
        * demo: remove useless libs
        * tests: include missing headers
        * Add missing limits.h include for NAME_MAX

2012-02-20 lttng-ust 2.0.0-rc1
        * Standardize version across toolchain
        * Fix a typo in gen-tp Makefile
        * Implement the .o file generation in lttng-gen-tp

2012-02-16 lttng-ust 1.9.8
        * Fix comment in tracepoint.h
        * Add loglevel info to manpage
        * Remove stale binary file
        * Add lttng-ust(3)
        * Add a man page for lttng-gen-tp
        * Install easy-ust and gen-tp examples in doc/
        * Create the lttng-gen-tp tools as an helper to generate UST .h and .c files
        * Add missing #define _GNU_SOURCE for sched_getcpu()
        * Define _GNU_SOURCE for all implementation files rather than getcpu.h
        * Add sched_getcpu and sysconf to AC_CHECK_FUNCS
        * Mark lib_ring_buffer_print_errors unused
        * Cleanup: remove extra space from easy_ust example
        * Add missing comma to tracepoint STAP_PROBEV call

2012-02-13 lttng-ust 1.9.7
        * liblttng-ust-java: add missing -classpath ./
        * Only specify that sdt.h provides system integration for now
        * Add STAP_PROBEV check ton configure.ac
        * Add sdt.h integration
        * Remove extern C around probe header
        * Move lttng/config.h to lttng/ust-config.h, and use LTTNG_UST_ namespace
        * Add a configure report at the end of the output
        * Add sdt.h integration option
        * Set default loglevel in metadata
        * Fix: LTTng-UST java jni wrapper does not build with OpenJDK

2012-02-09 lttng-ust 1.9.6
        * Fix tracepoint.h multiple .o within module/core exec linkage bug
        * tracepoint: name -> _name to fix possible namespace clash
        * Add debug printout to tracepoint.c
        * Rename liblttng-ust-libc to liblttng-ust-libc-wrapper
        * Update hardcoded loglevel
        * Add "easy_ust" example
        * Update gitignore
        * Zero-initialize struct msghdr
        * Add environment information
        * Fix event-specific enabling
        * Update static lib linking
        * liblttng-ust-libc: fix linking
        * liblttng-ust-libc: fix lib dependency
        * Install README and ChangeLog into system doc
        * Add hello-static-lib test
        * Fix static provider linking: introduce TRACEPOINT_PROBE_DYNAMIC_LINKAGE
        * Fix 32-bit type: allocated len is used
        * Fix 32-bit type mismatch

2012-02-02 lttng-ust 1.9.5
        * UST comm ABI: Add padding, push version to 2.0
        * Update loglevel names
        * Implement loglevels as event and wildcard attributes
        * Update loglevel ABI: only loglevel value/enum is known by UST
        * Pre-assign fixed loglevels
        * Remove old (now unused) loglevel control code entirely
        * Update loglevel selection ABI
        * Use boot_id as monotonic clock uuid
        * clock: add clock description to metadata
        * Properly fix the timekeeping overflow detection
        * Revert "Fix timestamps for slow-paced event rates"
        * Revert "Force 64-bit timestamps"
        * Declare struct lttng_ust_calibrate
        * Force 64-bit timestamps
        * demo program: ensure we don't link demo on useless libs
        * ust comm: Receive second FD even if 1st receive failed
        * ust consumer: close shm fd after mapping it
        * Add a comment about which wait fd is closed early by UST.
        * Remove leftover structure in ust-abi.h
        * Close stream and channel file descriptors as soon as passed to
          sessiond
        * Fix AC_LANG_SOURCE usage: only takes one parameter
        * Fix timestamps for slow-paced event rates
        * configure.ac: Use AC_LANG_SOURCE for if else macros
        * Add execution instructions to the demo test program
        * Force the building of shared noinst libraries in the demo test
          program.
        * Only print the futex perror in debug mode

2011-12-23 lttng-ust 1.9.4
        * Split liblttng-ust into liblttng-ust and liblttng-ust-tracepoint libs
        * Comment the union field (only used in call_rcu scheme)

2011-12-21 lttng-ust 1.9.3
        * Fix clock source overflow on 32-bit archs
        * Remove unused trace_clock_frequency
        * check for negative wait() return value
        * Add DBG message when registering a probe
        * Only show futex warning "perror" in debug mode

2011-12-14 lttng-ust 1.9.2
        * Add missing ust_libc.h to Makefile.am
        * Use DBG instead of WARN for futex_wake workaround message
        * Make dlopen more robust by using the .0 target for the library

2011-12-13 lttng-ust 1.9.1
        * First LTTng-UST 2.0 prerelease.