+2022-03-25 (National Waffle Day) lttng-ust 2.12.4
+ * fix: __STDC_VERSION__ can be undefined in C++
+ * 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
+
+2022-01-05 (National Bird Day) lttng-ust 2.12.3
+ * Fix: ust-cancelstate: include string.h for strerror
+ * Fix: lttng-ust-fd: remove lttng_ust_common_ctor call
+ * Fix: nestable pthread cancelstate
+ * Fix: abort on decrement_sem_count during concurrent tracing start and teardown
+ * fix: liblttng-ust-fd async-signal-safe close()
+ * Set git-review branch to stable-2.12
+ * fix: link benchmark with pthread
+ * Fix: liblttng-ust-ctl have dependencies on liburcu
+ * Fix: add extern "C" to two header files
+
+2021-05-15 (National Dance Like a Chicken Day) lttng-ust 2.12.2
+ * tests: benchmark: improve benchmark scalability accuracy
+ * tests: benchmark: use cpu-bound workload, calculate average and std.dev.
+ * tests: improve benchmark script
+ * compiler warning cleanup: is_signed_type: compare -1 to 1
+ * Fix: properly compare type enumeration
+ * fix: use the configured cmake binary
+ * Fix: bytecode linker: validate event and field array/sequence encoding
+ * fix: unix socket peercred on FreeBSD
+ * Fix: uninitialized variable in lib_ring_buffer_channel_switch_timer_start
+ * Fix: Use unix socket peercred for pid, uid, gid credentials
+ * Fix: stream fd leaks on error
+ * Fix: channel leak on error
+ * Fix: lttng_abi_map_channel should be static
+
+2021-02-17 (Random Act of Kindness Day) lttng-ust 2.12.1
+ * Fix: Use default visibility for tracepoint provider symbol
+ * Fix: configure: support Autoconf 2.70
+ * Fix: ust-tracepoint: make sure to expand tracepoint provider token
+ * Fix: ustctl_release_object: eliminate double-close/free on error
+ * tests: return the proper TAP exit code
+ * 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
+ * Fix: event probes attached before event enabled
+ * 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
+ * Fix: Java agent: handle partial payload read
+ * Fix: namespace contexts !CONFIG_RCU_TLS variable initialization
+
+2020-04-08 (The Day After National Beer Day) lttng-ust 2.12.0
+ * (no change)
+
+2020-03-27 (International Stay At Home Month) lttng-ust 2.12.0-rc3
+ * Fix: v.u.d might be uninitialized
+
+2020-03-04 (National Grammar Day) lttng-ust 2.12.0-rc2
+ * 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
+ * Cleanup: remove trailing white spaces across project
+ * Fix: lttng-ust-comm.c: return number of fd rather size of array
+ * liblttng-ust: exit loop early on event enabler match
+ * 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
+