[lttng-ust.git] / ChangeLog

# SPDX-FileCopyrightText: 2011-2023 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
#
# SPDX-License-Identifier: CC-BY-4.0

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.