ChangeLog

   1 2019-10-17 (Wear Something Gaudy Day) LTTng modules 2.11.0
   2         * (no change)
   3
   4 2019-10-11 (National Sausage Pizza Day) LTTng modules 2.11.0-rc7
   5         * Fix: btrfs: move basic block_group definitions to their own header (v5.4)
   6         * Cleanup: Silence gcc fall-through warning
   7         * Fix: update sched prev_state instrumentation for upstream kernel
   8
   9 2019-09-07 (Walter White's Anniversary) LTTng modules 2.11.0-rc6
  10         * Fix: gcc-9.1 stack frame size warning
  11         * Introduce LTTNG_KERNEL_SESSION_SET_CREATION_TIME
  12         * Add metadata env fields
  13         * Introduce LTTNG_KERNEL_SESSION_SET_NAME
  14         * Fix: do not use diagnostic pragma when GCC version is lower than 4.6.0
  15         * Fix: missing define when not building with gcc
  16         * Fix: lttng-tracepoint module notifier should return NOTIFY_OK
  17
  18 2019-06-12 (National Peanut Butter Cookie Day) LTTng modules 2.11.0-rc5
  19         * Fix: Don't print ring-buffer's records count when it is not used
  20         * Fix: do not set quiescent state on channel destroy
  21         * Fix: ring_buffer_frontend.c: init read timer with uninitialized flags
  22         * Introduce callstack stackwalk implementation header
  23         * Prepare callstack common code for stackwalk
  24         * Introduce callstack legacy implementation header
  25         * fix: random: only read from /dev/random after its pool has received 128 bits (v5.2)
  26         * fix: mm: move recent_rotated pages calculation to shrink_inactive_list() (v5.2)
  27         * fix: mm/vmscan: simplify trace_reclaim_flags and trace_shrink_flags (v5.2)
  28         * fix: mm/vmscan: drop may_writepage and classzone_idx from direct reclaim begin template (v5.2)
  29         * fix: timer/trace: Improve timer tracing (v5.2)
  30         * Cleanup: bitfields: streamline use of underscores
  31         * Silence compiler "always false comparison" warning
  32         * Fix: bitfield: shift undefined/implementation defined behaviors
  33         * Fix: timestamp_end field should include all events within sub-buffer
  34         * Fix: Remove start and number from syscall_get_arguments() args (v5.1)
  35         * lttng abi documentation: clarify getter usage requirements
  36         * Fix: don't access packet header for stream_id and stream_instance_id getters
  37         * Fix: atomic_long_add_unless() returns a boolean
  38         * Fix: Revert "KVM: MMU: show mmu_valid_gen..." (v5.1)
  39         * Fix: pipe: stop using ->can_merge (v5.1)
  40         * Fix: rcu: Remove wrapper definitions for obsolete RCU... (v5.1)
  41         * Fix: mm: create the new vm_fault_t type (v5.1)
  42         * Fix: extra-version-git.sh redirect stderr to /dev/null
  43
  44 2019-03-12 (Homer Simpson Birthday) LTTng modules 2.11.0-rc4
  45         * Fix: timer instrumentation for RHEL 7.6
  46
  47 2019-03-12 (Homer Simpson Birthday) LTTng modules 2.11.0-rc3
  48         * Move timekeeping blacklisting to a header file
  49         * Blacklist: kprobe for arm
  50         * Cleanup: tp mempool: Remove logically dead code
  51         * Fix: btrfs: Remove fsid/metadata_fsid fields from btrfs_info
  52         * Fix: SUNRPC: Simplify defining common RPC trace events (v5.0)
  53         * Fix: Replace pointer values with task->tk_pid and rpc_clnt->cl_clid
  54         * Fix: Remove 'type' argument from access_ok() function (v5.0)
  55         * Add missing SPDX license identifiers to uprobes
  56         * Fix: ext4: adjust reserved cluster count when removing extents (v4.20)
  57         * Fix: signal: Remove SEND_SIG_FORCED (v4.20)
  58         * Fix: signal: Distinguish between kernel_siginfo and siginfo (v4.20)
  59
  60 2018-11-01 (National Men Make Dinner Day) LTTng modules 2.11.0-rc2
  61         * Fix: update kvm instrumentation for SLES12 SP2 LTSS >= 4.4.121-92.92
  62         * Fix: Add missing const to lttng_tracepoint_ptr_deref prototype
  63         * Fix: adapt to kernel relative references
  64         * Fix: implicit declarations caused by buffer size checks.
  65         * Prevent allocation of buffers if exceeding available memory
  66         * Fix: btrfs instrumentation namespacing
  67         * Fix: Convert rcu tracepointis to gp_seq (v4.19)
  68         * Fix: tracing: Centralize preemptirq tracepoints (4.19)
  69         * Fix: net: expose sk wmem in sock_exceed_buf_limit tracepoint (4.19)
  70         * Fix: access migrate_disable field directly
  71         * Fix: out of memory error handling
  72
  73 2018-09-05 (Be Late for Something Day) LTTng modules 2.11.0-rc1
  74         * Fix: uprobes: missing break in lttng_event_ioctl()
  75         * Fix: ACCESS_ONCE was removed in 4.15, use READ_ONCE instead
  76         * Fix: instruction pointer has different names across arch
  77         * Fix: build failures when CONFIG_UPROBES is absent
  78         * uprobe: Support multiple call sites for the same uprobe event
  79         * uprobe: Receive file descriptor from session instead of path to file
  80         * uprobe: Mark uprobe event as registered
  81         * Add uprobes support
  82         * Fix: adjust SLE version ranges to build with SP2 and SP3
  83         * Fix: Allow alphanumeric characters in SLE version
  84         * Fix: Adjust range for SuSE 4.4.103-92 kernels
  85         * Cleanup: move to kernel style SPDX license identifiers
  86         * Cleanup: move scripts to subdirectory
  87         * Cleanup: modinfo keys
  88         * Add extra version information framework
  89         * Revert "Add btrfs file item tracepoints"
  90         * Fix: btrfs: Remove unnecessary fs_info parameter
  91         * Fix: btrfs: use fs_info for btrfs_handle_em_exist tracepoint
  92         * Fix: asoc: Remove snd_soc_cache_sync() implementation
  93         * Fix: asoc: fix printing jack name
  94         * Fix: asoc: Consolidate path trace events
  95         * Fix: ASoC level IO tracing removed upstream
  96         * Enable userspace callstack contexts only on x86
  97         * Prevent re-entrancy in callstack-user context
  98         * Callstack context: bump number of entries to 128
  99         * Fix: callstack context alignment calculation
 100         * Cleanup callstack context
 101         * Fix callstack context: write empty sequence if no stack trace
 102         * Fix: callstack context: false-sharing, bad memory size allocation
 103         * callstack context: use delimiter when stack is incomplete
 104         * Cleanup callstack context
 105         * Add kernel and user callstack contexts
 106         * Assign CPU id before saving the context size
 107         * Define max nesting count constant
 108         * Compute variable sized context length
 109         * Pass arguments for context size computation
 110         * Add 9p probe
 111         * Update delayed ref tracepoints for v3.12
 112         * Add btrfs file item tracepoints
 113         * Add btrfs tracepoint for em's EEXIST case
 114         * Fix: dyntick field added to trace_rcu_dyntick in v4.16
 115         * Fix: BUILD_BUG_ON with compile time constant on < v2.6.38
 116         * Fix: lttng filter validator ERANGE error handling
 117         * Fix: filter interpreter: use LTTNG_SIZE_MAX
 118         * Filter: add FILTER_OP_RETURN_S64 instruction
 119         * Perform bitwise ops on unsigned types
 120         * Filter: catch shift undefined behavior
 121         * Filter: add lshift, rshift, bit not ops
 122         * Filter: index array, sequences, implement bitwise binary operators
 123         * Fix: pid tracker should track "pgid" for noargs probes
 124         * lttng-tp-mempool: perform node-local allocation
 125         * Fix: update RCU instrumentation for 4.17
 126         * Fix: sunrpc instrumentation for 4.17
 127         * Fix: use struct reclaim_stat in mm_vmscan_lru_shrink_inactive for 4.17
 128         * Fix: Add gfp_flags arg to mm_vmscan_kswapd_wake for 4.17
 129         * Update: kvm instrumentation for ubuntu 4.13.0-38
 130         * Fix: update kvm instrumentation for Ubuntu 3.13.0-144
 131         * Fix: btrfs instrumentation namespacing
 132         * Cleanup: comment about CONFIG_HOTPLUG_CPU ifdef
 133         * Fix: do not use CONFIG_HOTPLUG_CPU for the new hotplug API
 134         * Fix: update kvm instrumentation for 4.1.50+
 135         * Use the memory pool instead of kmalloc
 136         * Create a memory pool for temporary tracepoint probes storage
 137         * Fix: use proper pid_ns in the process statedump
 138         * Fix: add variable quoting to shell scripts
 139         * Update: kvm instrumentation for fedora 4.14.13-300
 140         * Fix: Add Fedora version macros
 141         * Add preemptirq instrumentation
 142         * Clean-up: fix stale #endif comments
 143         * Command to dump the metadata cache again
 144         * Add a new /dev/lttng-logger interface
 145         * Fix: update btrfs instrumentation for SuSE 4.4.114-92
 146         * Fix: update block instrumentation for SuSE 4.4.114-92
 147         * Fix: update rcu instrumentation for v4.16
 148         * Fix: update vmscan instrumentation for v4.16
 149         * Fix: update timer instrumentation on 4.16 and 4.14-rt
 150         * Update kvm instrumentation for debian kernel 4.14.0-3
 151         * Fix: network instrumentation protocol enum
 152         * Fix: update btrfs instrumentation for SuSE 4.4.103-6
 153         * Fix: update block instrumentation for SuSE 4.4.73-5
 154         * Fix: global_dirty_limit for kernel v4.2 and up
 155         * Fix: network instrumentation handling of corrupted TCP headers
 156         * Fix: add missing uaccess.h include from kstrtox.h wrapper
 157         * Update: kvm instrumentation for 4.14.14+, 4.9.77+, 4.4.112+
 158         * Fix: btrfs_delayed_ref_head was unwired since v3.12
 159         * Update kvm instrumentation for debian kernel 4.9.65-3
 160         * Fix: debian kernel version parsing
 161         * Fix: block instrumentation 4.14+ NULL pointer dereference
 162         * Update: kvm instrumentation for 3.16.52 and 3.2.97
 163         * Fix: kvm instrumentation for 4.15
 164         * Update sock instrumentation for 4.15
 165         * Update kvm instrumentation for 4.15
 166         * Fix: ACCESS_ONCE() removed in kernel 4.15
 167         * Fix: sched instrumentation on stable RT kernels
 168         * timer API transition for kernel 4.15
 169         * Fix: Don't nest get online cpus
 170         * Fix: lttng_channel_syscall_mask() bool use in bitfield
 171         * Fix: update kmem instrumentation for kernel 4.15
 172         * Fix: lttng_kvmalloc helper NULL pointer OOPS
 173         * Update version to 2.11.0-pre
 174         * Fix: lttng-logger get_user_pages_fast error handling
 175         * Fix: update block instrumentation for 4.14 kernel
 176         * Revert "Fix: update block instrumentation for kernel 4.14"
 177         * Fix: version check error in btrfs instrumentation
 178         * Fix: update btrfs instrumentation for kernel 4.14
 179         * Fix: update writeback instrumentation for kernel 4.14
 180         * Fix: update block instrumentation for kernel 4.14
 181         * Fix: vmalloc wrapper on kernel < 2.6.38
 182         * Fix: vmalloc wrapper on kernel >= 4.12
 183         * Add kmalloc failover to vmalloc
 184         * Fix: mmap: caches aliased on virtual addresses
 185         * Fix: update ext4 instrumentation for kernel 4.13
 186         * Fix: Sleeping function called from invalid context
 187         * Fix: sched for v4.11.5-rt1
 188         * Make vim users life easier
 189         * Rename Makefile.ABI.workarounds to Kbuild.common
 190         * Fix: handle missing ftrace header on v4.12
 191         * Fix: pid tracker should track "pgid"
 192         * Cleanup: typo in lttng pid tracker
 193         * Fix: Build ftrace probe on kernels prior to 4.12
 194         * Fix: update ftrace probe for kernel 4.12
 195         * Fix: update block instrumentation for kernel 4.12
 196         * Calculate context length outside of retry loop
 197         * Fix: Add support for 4.9.27-rt18 kernel
 198         * Fix: update btrfs instrumentation for kernel 4.12
 199         * Fix: update ringbuffer for kernel 4.12
 200         * Fix: update sched instrumentation for kernel 4.12
 201         * Fix: ext3 was completely removed from the kernel in v4.3
 202         * Fix: NULL pointer dereference of THIS_MODULE with built-in modules
 203         * Fix: add "flush empty" ioctl for stream intersection
 204         * Revert "Fix: flush empty packets on snapshot channel"
 205         * Revert "Fix: don't perform extra flush on metadata channel"
 206
 207 2017-05-05 (International Tuba Day) LTTng modules 2.10.0-rc1
 208         * Fix: remove CONFIG_KALLSYMS_ALL warning on clean
 209         * Add RING_BUFFER_SNAPSHOT_SAMPLE_POSITIONS command
 210         * Fix: Always build vmscan probe
 211         * Cleanup: formatting in strutils_star_glob_match explanation
 212         * Fix: introduce LTTNG_SIZE_MAX for older kernels
 213         * Use SIZE_MAX instead of -1ULL for size_t parameter
 214         * filter: use SIZE_MAX for size_t
 215         * Fix: out of bound array access in filter code
 216         * Add support for star globbing patterns in event names
 217         * Filtering: add support for star-only globbing patterns
 218         * Add string utilities
 219         * lttng-abi.c: cleanup whitespaces
 220         * Fix: use of uninitialized ret value in lttng_abi_open_metadata_stream
 221         * Fix: kref changes for kernel 4.11
 222         * Fix: atomic_add_unless() returns true/false rather than prior value
 223         * Fix: timers cputime_t arguments replaced by ull in kernel 4.11
 224         * Fix: update scsi instrumentation for kernel 4.11
 225         * Fix: changes to the vm_op fault cb prototype in libringbuffer
 226         * Fix: update btrfs instrumentation for kernel 4.11
 227         * Fix: update mm_vmscan instrumentation for kernel 4.11
 228         * Fix: section mismatch warning caused by __exit annotation
 229         * socketpair: extend syscall socketpair tracing information
 230         * Remove events/mainline unused headers
 231         * update event README
 232         * Fix: nmi-safe clock on 32-bit systems
 233         * Fix: only include linux/cpuhotplug.h for kernels >= 4.10
 234         * Fix: 4.10 hotplug adaptation backward compat
 235         * Fix: 4.10 btrfs instrumentation update backward compat
 236         * Update btrfs instrumentation for 4.10 kernel
 237         * Adapt lttng-modules to Linux 4.10 cpu hotplug state machine
 238         * btrfs instrumentation: update to 4.10 kernel
 239         * timer instrumentation: adapt to ktime_t without union
 240         * Add load/unload messages to kernel log
 241         * Update version to 2.10.0-pre
 242         * Fix: asoc instrumentation for RHEL 7.3
 243         * Fix: SCSI instrumentation for SLES12 SP2
 244         * Add SUSE Linux Enterprise kernel version tests
 245         * Filter code relicensing to MIT license
 246         * Add task cpu in process statedump
 247         * Performance: add missing unlikely in reserve
 248         * Fix: preemptible and migratable context error handling
 249         * Fix: bump stable kernel version ranges for clock work-around
 250
 251 2016-10-07 (National Frappé Day) LTTng modules 2.9.0-rc1
 252         * Fix: i2c: support kernels < 3.15
 253         * Fix: show warning for broken clock work-around
 254         * Bump minor ABI version
 255         * Fix: work-around upstream Linux timekeeping bug
 256         * Add support for i2c tracepoints
 257         * Cleanup: makefile version checks with single "ge"
 258         * Performance: special-case NULL in lttng_strlen_user_inatomic
 259         * Fix: lttng_inline_memcpy does not take a __user argument
 260         * Performance: implement lttng_inline_memcpy
 261         * Performance: cache the backend pages pointer in context
 262         * Cleanup: libringbuffer: remove duplicate pointer chasing in slow paths
 263         * Performance: Only dereference commit index once
 264         * Performance: Mark channel and buffer event disabled check unlikely
 265         * Performance: Relax atomicity constraints for crash handling
 266         * Performance: mark ring buffer do_copy callers always inline
 267         * Performance: mark lib_ring_buffer_write always inline
 268         * Kconfig: select TRACEPOINTS when built-in
 269         * Performance: disable event counting by default
 270         * Fix: handle large number of pages or subbuffers per buffer
 271         * Fix: unregister cpu hotplug notifier on buffer alloc error
 272         * Fix: sa_family is of type unsigned short
 273         * Fix: check for sizeof sa_family to save sa_family in accept and connect
 274         * Fix: use printk_once() for wrapper warning messages
 275         * Fix: btrfs instrumentation for 4.8 kernel
 276         * Fix: update mm_vmscan instrumentation for kernel 4.8
 277         * Fix: napi instrumentation for 4.8 kernels
 278         * Fix: update block instrumentation to compile on 4.8 kernels
 279         * Cleanup: reuse code in accept() and accept4() instrumentation
 280         * Add x86-64 override for accept4 syscall
 281         * Fix: timer wrapper: support kernels >= 4.8
 282         * Performance: split check deliver fast/slow paths
 283         * Fix: x86-64 accept instrumentation
 284         * Fix: Add support for 4.6.4-rt8 kernel
 285         * Fix: update scsi instrumentation for 4.7+ kernels
 286         * Fix: Use fs_initcall instead of rootfs_initcall
 287         * Fix: Add kernel configuration for lttng clock plugin
 288         * Fix: the clock plugin must be initiated before first use of the clock
 289         * Fix: tests/Kbuild for older kernels
 290         * Cleanup: __dynamic_len_idx set but not used warning
 291         * Cleanup: coding style and comments of net.h
 292         * net: Add TCP header data to net_* tracepoints
 293         * net: Add IPv4/IPv6 header data to net_* tracepoints
 294         * Fix: endianness for the container type of enum
 295         * enumeration autoincrement: use if/else logic
 296         * Cleanup trailing whitespaces
 297         * lttng-test probe: test ctf_enum_auto()
 298         * Add ctf_enum_auto() for autoincrementing enumeration values
 299         * Implement session statedump command
 300         * Fix: annotate bytecode interpreter for kernel stack validator
 301         * Update version to 2.9.0-pre
 302         * Fix: ring buffer: honor switch parameter type in remote switch
 303         * Fix: only flush non-metadata channels
 304         * Fix: don't perform extra flush on metadata channel
 305         * select, poll and epoll_wait overrides on ARM 32-bit
 306         * Fix: flush empty packets on snapshot channel
 307         * Fix: do not generate packet at destroy after stop
 308         * Fix: compat ioctl for flush/get metadata version
 309         * Fix: ctf_string() should handle NULL pointers
 310         * Fix: portability: no arith on void pointer
 311         * Fix: add missing tests/Kbuild
 312         * Test clock override plugin
 313         * Fix: add modules target to base Makefile
 314         * Fix: make clean does not include dot-config
 315         * Fix: trigger build error if CONFIG_TRACEPOINTS is not set
 316         * Documentation: document that CONFIG_MODULES not required when builtin
 317         * Fix: add missing errno include in random wrapper
 318         * Fix: mm_page_alloc_extfrag instrumentation for kernel 3.16.35
 319         * Fix: copy_from_user size when limited allocation
 320         * Extract the payload of epoll_wait/epoll_pwait
 321         * Extract the payload for epoll_ctl
 322         * Extract the FDs and flags from poll and ppoll
 323         * Extract the FD sets in select and pselect6
 324         * Add ctf_integer_bitfield_type
 325         * Implement enumeration type
 326         * Implement custom field support
 327         * Implement variant type
 328         * Implement shadow stack for dynamic len
 329         * libringbuffer: implement event too big API
 330         * Implement structure, compound array/sequence types
 331         * Fix: integer endianness metadata generation
 332         * Fix: endianness of integers received by filter
 333         * Fix: writeback probe on RHEL >= 3.10.0-327.10.1
 334         * Fix: RHEL kernel 3.10.0-327.13.1 compat
 335         * Fix: ctf_user_integer should not trigger page fault
 336         * Fix: lib_ring_buffer_copy_from_user_inatomic error handling
 337         * Add comment describing ioctl number duplication
 338         * Fix: remove unused gfpflags.h from btrfs and compaction instrumentation
 339         * Fix: Remove dead code from filter interpreter
 340         * Fix: x86 kvm mmutrace instrumentation for kernel < 3.6
 341         * Fix: mm_vmscan instrumentation: remove unused gfpflags.h include
 342         * Fix: use of uninitialized ret value in lttng_abi_create_event
 343         * Fix: kmem instrumentation: remove unused gfpflags.h include
 344         * Fix: 4.6 kernel: use in_compat_syscall
 345         * Fix: use BUG_ON instead of accessing array subscript above array bounds
 346         * Fix: Add granularity to RHEL kernel version checks
 347
 348 2016-03-18 (Awkward Moments Day) LTTng modules 2.8.0-rc1
 349         * Bump minor tracer ABI version
 350         * Fix: build against out-of-tree kernel build
 351         * probes/Kbuild: remove upper level header path
 352         * Move leftover relative include paths to system paths
 353         * syscall instrumentation: use system headers
 354         * tracepoint event instrumentation: use system headers
 355         * Use system include path in wrappers
 356         * libs: use system include paths
 357         * Use system header paths in core implementation files
 358         * Use system include paths in root directory headers
 359         * Use system include paths in probes
 360         * Update gitignore
 361         * Use system include paths in lttng-types.h
 362         * Use system include paths in lttng-tracepoint-event-impl.h
 363         * Use system include path in probes/define_trace.h
 364         * Use system include paths in probes/lttng-tracepoint-event-impl.h
 365         * Rename probes/lttng-events.h to probes/lttng-tracepoint-event-impl.h
 366         * Add makefile directory to include path
 367         * Fix: event ctx get size should be after chan ctx
 368         * Fix: filter interpreter with userspace strings
 369         * Fix: rename kvm x86 TRACE_SYSTEM to avoid name clash
 370         * Fix: format address fields as hexadecimal
 371         * PowerPC-64 ABIv1: add build error if KALLSYMS_ALL is missing
 372         * Fix: system call instrumentation overrides
 373         * Fix: page_alloc wrapper incorrect parenthesis
 374         * Fix: system call tracing for arm-64 compat !CONFIG_UID16
 375         * Fix: add struct user_msghdr forward declaration for older kernels
 376         * Cleanup: Remove unused lttng-types module
 377         * Fix: add missing versions and init call for page_alloc wrapper
 378         * Fix: Define lttng-tracer metadata only once
 379         * Fix: Add CONFIG_LTTNG to modules_install target
 380         * Fix: Use kbuild env instead of a custom var KERNELDIR
 381         * Update clock offset comment
 382         * clock offset: print negative value in metadata
 383         * Fix: handle negative clock offset
 384         * Fix: sched instrumentation for 4.1-rt11
 385         * Add RT patch version macros
 386         * Expect filter context identifiers starting with $ctx.
 387         * ARM64: wire up compat system calls
 388         * Add support for arm64 syscalls
 389         * Fix: Ubuntu kernel range for block_rq_complete
 390         * Fix: Ubuntu kernel range for mm_page_alloc_extfrag
 391         * Fix: update vmscan instrumentation for kernel 4.5
 392         * Fix: check reference counts for overflow
 393         * Fix: RHEL 7.2 scsi instrumentation
 394         * Fix: RHEL 7.2 kvm instrumentation
 395         * Kconfig: describe both module and in-kernel compilation options
 396         * Add comments and indentation to Makefile
 397         * Add support for built-in kernel build
 398         * Rename sub makefiles to Kbuild
 399         * Cleanup sub makefiles
 400         * Make goals configurable with CONFIG_LTTNG
 401         * Fix: Use generic raw_irqs_disabled_flags
 402         * Fix: Use MAX_RT_PRIO offset in sched_wakeup_template
 403         * Fix: update sched instrumentation for kernel 4.4.0
 404         * Bump version number for development branch
 405         * Fix: interruptible context: reversed logic
 406         * Contexts for RT debugging
 407         * Fix: instrumentation: v4lv2 missing include
 408         * Fix: header size larger than 256 bytes
 409         * Instrument x86 page faults
 410         * Fix: irq_vectors TRACE_SYSTEM name
 411         * Instrument x86_irq_vectors
 412         * Fix: tracepoint listing misses last loaded probe
 413         * Fix: lttng trace-clock needs to disable preemption
 414         * Tracepoint event: add "TP_code_post()"
 415         * Implement array and sequence bitfields
 416         * Fix: kmem: add mm.h include
 417         * Add page frame number (pfn) to kmem page events
 418         * Use pfn rather than struct page in ring buffer array
 419         * Implement clock plugin support
 420         * Command to regenerate the metadata of a session
 421         * Fix: writeback instrumentation update for 4.3 Linux kernel
 422         * Fix: update sched wakeup instrumentation for 4.3 kernel
 423         * Fix: lttng-test build failure for kernels < 3.0
 424         * Use 3.18 syscall instrumentation for MIPS32
 425         * Update the MIPS32 syscall instrumentation to 3.18
 426         * Fix: Move pipe override to the arch specific pointers_override.h
 427         * Implement lttng test module
 428         * Cleanup: remove logically dead code
 429         * Fix: filter validator use after free
 430         * Fix: use after free in channel release
 431         * Fix: non-enabler events should be disabled by default
 432         * Fix: build failure on 2.6.36
 433         * Cleanup: split bdi_dirty_ratelimit with ifdef into separate macros
 434         * Fix: writeback instrumentation for 4.2 kernels
 435         * Fix: mm_page_alloc_extfrag instrumentation for kernel 3.18.10
 436         * Add stream instance id to the packet header
 437         * Add a packet sequence number
 438         * Fix: kmem probe with Ubuntu 3.13 kernels
 439         * Fix: disable kvm probe if lapic.h isn't found
 440         * Fix: timer instrumentation for 4.2 kernels
 441         * Fix: ext4 instrumentation for 4.2 kernels
 442         * Fix: kvm instrumentation for 4.2 kernels
 443         * Fix: allow LTTng to be built within kernel tree
 444
 445 2015-07-15 (Pet Fire Safety Day) LTTng modules 2.7.0-rc1
 446         * Fix: Building the event list fails on fragmented memory
 447         * Fix: use after free on metadata cache reallocation
 448         * Fix: version checks for kernel 4.0
 449         * Fix: Incorrect Ubuntu kernel patchlevel
 450         * Fix: cpu-id context should use int type
 451         * Implement cpu-id context
 452         * Implement cpu_id context for filtering
 453         * Fix: context printk mismatch on error
 454         * Cleanup: misleading comment about deferrable timer
 455         * Fix: arm-32 build
 456         * Fix: Update kmem event for Ubuntu's 3.16 kernel
 457         * Fix: RHEL 7.1 block instrumentation
 458         * Fix: add RHEL version macros
 459         * Fix: add missing parenthesis in ubuntu version check
 460         * Fix: remove regmap instrumentation for kernels < 4.1
 461         * Fix: Update kmem event for recent Ubuntu kernel
 462         * Fix: missing statedump end event when block device listing available
 463         * Fix: don't generate incorrect macros for debian/ubuntu version check
 464         * Revert "Fix: build against Ubuntu kernels"
 465         * Fix: build against Ubuntu kernels
 466         * Add namespace info in sched_fork and statedump
 467         * Fix: ext4 instrumentation: flags parameter did not exist prior to 3.11
 468         * Fix: printk instrumentation: remove "condition" tracepoints
 469         * Fix: regmap build against kernel 4.0 kernel headers
 470         * Add mmu_valid_gen field to mmutrace events
 471         * Fix: add missing x86 mmutrace kernel header include
 472         * Fix: x86 mmutrace event extra field for kernels >= 3.11
 473         * Fix: remove execute flag from kvm.h file
 474         * Fix: build x86 kvm probes on kernels >= 4.1-rc1
 475         * Fix: compilation on 4.1-rc1 kernel, remove unused WB_WORK_REASON
 476         * Fix: 4.1-rc1 Linux build and regmap instrumentation
 477         * Fix: don't clash with older Debian kernel versions
 478         * Fix: update get_pfnblock_flags_mask wrapper for debian kernels
 479         * Fix: discover Debian API
 480         * Fix: Update README.md to match reality: kernels >= 2.6.36 are supported
 481         * Fix: atomic.h wrapper for kernels < 2.6.37
 482         * Fix: disable x86 kvm instrumentation for kernels < 2.6.38
 483         * Fix: add missing types.h include for older kernels
 484         * Fix: add hlist lttng wrappers
 485         * Fix: add struct file_handle forward declaration
 486         * Fix: string length calculation reversed user vs kernel args
 487         * Fix: use lttng_rcu_dereference within lttng-syscalls.c
 488         * Fix: add lttng rcu wrapper to allow tracing RCU
 489         * Fix: double-unlock of session mutex
 490         * Fix: check that class and instance prototype match
 491         * Fix: lttng-events.h check function takes void
 492         * Fix: regmap instrumentation for Linux 3.19.4 and 4.0
 493         * Fix: kernels >= 2.6.33 put utsrelease.h in generated/
 494         * Fix: Include utsrelease.h in lttng-kernel-version.h
 495         * Fix: ext4 ext4_da_write_pages instrumentation for kernels < 3.11.0
 496         * Fix: old kernels need module.h included before vermagic.h
 497         * Fix: net instrumentation for kernels 2.6.39 and below
 498         * Fix: version condition in makefile
 499         * Implement wrapper around get_pfnblock_flags_mask
 500         * Be more restrictive in provider name check
 501         * Fix: net instrumentation namespacing
 502         * Fix: compaction instrumentation namespacing
 503         * Fix: Support 4.x kernel versions in Makefile
 504         * Fix: remove stale TP_STRUCT_entry from kvm instrumentation
 505         * Fix: add missing module.h include to lttng-probe-user.c
 506         * Fix: use lttng hlist wrapper in wildcard and filter
 507         * Fix: namespace asoc and kmem instrumentation
 508         * Fix: update instrumentation after wildcard rebase
 509         * Fix: lttng_abi_syscall_list does not need to be exported
 510         * Migrate ARM, powerpc, MIPS syscall instrumentation to TP_FIELDS
 511         * Remove now unused syscalls.h from lttng-modules
 512         * Filter: start with enabler "disabled"
 513         * Fix coverity warning about sizeof(void **) != sizeof(void *)
 514         * Fix length type and text sequence base
 515         * Fix: TP_FIELDS: add missing headers
 516         * Migrate syscall instrumentation to TP_FIELDS
 517         * Migrate tracepoint instrumentation to TP_FIELDS
 518         * Implement filtering infrastructure
 519         * syscall wildcards: apply syscall filtering
 520         * Implement syscall wildcard support
 521         * Implement tracepoint wildcard support
 522         * Namespace all tracepoints
 523         * Implement list.h wrapper for hlist in older kernels
 524         * Implement listing of pid tracker content
 525         * Implement PID tracking
 526         * Fix: mm_page_alloc_extfrag instrumentation for kernel 3.14.36
 527         * Fix: update writeback instrumentation for kernel 4.0+
 528         * Fix: compaction mm_compaction_isolate_template update for Linux 4.0+
 529         * Fix: kmem instrumentation update for mm_page_alloc_extfrag kernel 3.19.2+
 530         * Fix: kmem instrumentation: mm_page_alloc extfrag change_ownership field
 531         * Fix: missing parenthesis in offset_align_floor
 532         * Fix: implement time.h wrapper for FD_ISSET
 533         * Fix: update sched instrumentation for 3.19+ kernels
 534         * Fix: update rcu instrumentation for 3.19+ kernels
 535         * Fix: update scsi instrumentation for 3.19+ kernels
 536         * Fix: update module instrumentation for 3.19+ kernels
 537         * Fix: Add f_dentry wrapper for 3.19+ kernels
 538         * Fix: introduce lttng_get_unused_fd() wrapper for 3.19 kernels
 539         * Fix: lttng_this_cpu_ptr wrapper for kernel 3.19+
 540         * Fix: Update btrfs instrumentation for 3.18 Linux kernel
 541         * Fix compile error on kernel 3.0.101 with CONFIG_PERF_EVENTS
 542         * Conditional compilation introduced by lttng-modules commit
 543         * Fix: compaction instrumentation update for 3.14.x stable kernels
 544         * Fix: context alignment not properly handled
 545         * Fix compilation on Linux kernel >= 3.18.0
 546         * Fix: build for architectures without HAVE_SYSCALL_TRACEPOINTS
 547
 548 2014-10-20 LTTng modules 2.6.0-rc1
 549         * Expose lttng-modules ABI version ioctl
 550         * Fix: syscall list ioctl number conflict
 551         * lttng-modules: fix build for non-x86
 552         * Fix: syscall listing of session
 553         * Print build warning when writeback probe is disabled
 554         * Add atomic.h wrapper for before/after atomic
 555         * Fix compilation on Ubuntu 14.10
 556         * Fix: export name as text array in writeback
 557         * Cleanup: remove unused trace_clock_read32()
 558         * Use 3.17 ktime_get_mono_fast_ns() new API
 559         * Check for stale version.h files
 560         * Fix: compile lttng_statedump_process_ns on Ubuntu
 561         * Reverse version check logic in lttng_statedump_process_ns
 562         * Fix block_rq_complete TP on Ubuntu kernel
 563         * Introduce macros to check Ubuntu kernel version
 564         * Sync writeback tracepoints from mainline
 565         * Fix: redefinition of DEFINE_WRITEBACK_EVENT
 566         * Fix: hander negative get_syscall_nr return value
 567         * Fix: statedump: close_on_exec flag backward compat
 568         * Fix instrumentation of vmscan for older kernels
 569         * Fix: older kernels (3.2.x) don't undefine TRACE_SYSTEM
 570         * Fix: syscall listing: handle "enable all syscall"
 571         * Fix: don't allow disabling syscalls when none are enabled
 572         * Fix: syscall: fail disable all if all already disabled
 573         * Fix: syscall filtering: NULL pointer deref
 574         * Cleanup: list syscall without syscall_entry prefix
 575         * Fix: syscall_list_show NULL pointer deref
 576         * implement syscall mask getter
 577         * Cleanup: lttng-abi.h coding style
 578         * syscall listing: show syscall ID
 579         * Allow events with same name to be enabled for each channel
 580         * ABI: use enable a syscall ABI field name
 581         * Implement syscall listing
 582         * Fix: tracepoint list anonymous file name
 583         * Fix: syscall filtering: disable all syscalls
 584         * syscall tracing: input/output parameter handling for all arch
 585         * lttng-get-syscall-inout.sh depends on bash
 586         * Fix generate syscall header script: add missing escape char
 587         * syscall instrumentation: handle copy_from_user return value
 588         * Rename LTTng syscall instrumentation macros
 589         * Rename LTTng instrumentation macros
 590         * Extract input/output arguments from accept and connect syscalls
 591         * syscall: extract pipe and pipe2 output args
 592         * Remove sys_ prefix from syscall names
 593         * System call inout/output arg processing
 594         * Update syscall inout table
 595         * Add syscall inout table
 596         * Extract syscall exit ret value on x86 32/64
 597         * Extract system call exit return value
 598         * Syscall filtering: apply to syscall exit
 599         * System call filtering
 600         * asoc.h: fix build with v3.17 kernel
 601         * Fix: lttng-modules teardown NULL pointer OOPS
 602         * Fix: handle concurrent flush vs get_next_subbuf on metadata cache
 603         * Modernize README using Markdown
 604         * Fix: OOT lttng_logger tracepoint not visible with signed kernels
 605         * Add cscope to gitignore
 606         * Update kvm instrumentation: compile on 3.17-rc1
 607         * Update statedump to 3.17 nsproxy locking
 608         * Fix: noargs probes should calculate alignment and event length
 609         * Update compaction instrumentation to 3.16 kernel
 610         * Update vmscan instrumentation to 3.16 kernel
 611
 612 2014-07-16 (Take Your Poet to Work Day) LTTng modules 2.5.0
 613         * (no change)
 614
 615 2014-06-27 LTTng modules 2.5.0-rc2
 616         * Fix: statedump: check whether "files" is NULL, RCU semantic fix
 617         * Fix: statedump handle oom case, handle errors
 618         * Fix: correct typo in kernel version number
 619         * Fix: blktrace instrumentation for backported branches
 620         * Fix: statedump block devices OOPS
 621
 622 2014-05-28 (International Hamburger Day) LTTng modules 2.5.0-rc1
 623         * Add TID field to some block_* events
 624         * Fix: refuse overwrite mode buffers with less than two subbuffers
 625         * Fix: lttng modules system call generation script
 626         * Dump FD flags and mode on state dump
 627         * Fix: incorrect rwbs field type in block_bio_queue
 628         * Fix: blktrace instrumentation for v3.2.58+ stable branch
 629         * Fix: pass proper args when writing commit counter
 630         * Cleanup: lib ringbuffer: pagecpy has unsigned semantic
 631         * Fix: allow racy tracepoint string input from kernel and userspace
 632         * Statedump event for block devices
 633         * Fix: update v4l2 instrumentation to 3.15 kernel
 634         * Fix: ext4 update instrumentation to 3.15 kernel
 635         * Fix: update block instrumentation to 3.15 kernel
 636         * Fix: module instrumentation: update to 3.15 kernel
 637         * Adapt to 3.15 tracepoint API
 638         * Kernel 3.15 don't define map unmap for pipe
 639         * Fix: add missing module version in v4l2 probe
 640         * Add V4L2 instrumentation
 641         * Fix: rcu instrumentation: add const qualifier to char pointers
 642         * Fix: add missing module version information
 643         * Use kernel 3.13 syscall tables for MIPS32
 644         * Add MIPS32 syscalls extracted from a 3.13 kernel
 645         * Fix: block instrumentation: < 3.14 don't have bi_iter
 646         * Fix: update btrfs instrumentation to kernel 3.14
 647         * Fix: update block layer instrumentation to kernel 3.14
 648         * Fix: remove __exit annotation
 649         * Fix file permissions for lttng-statedump-impl.c
 650         * LTTng logger ABI
 651
 652 2014-02-28 (Public Sleeping Day) LTTng modules 2.4.0
 653         * Fix: load state dump even if work-around lookup fails
 654         * Cleanup: fix comment
 655         * Fix: correctly version kvm events to build against v3.0 kernel
 656         * Add extraversion (e.g. -rc4) to lttng-tracer modinfo
 657
 658 2014-02-14 LTTng modules 2.4.0-rc4
 659         * Fix: use after free in ring buffer clients
 660         * Fix: Add statedump exit so module is not permanent
 661         * Cleanup: move callback init to static initialization
 662         * Fix: OOT lttng-statedump tracepoints not visible with signed kernels
 663
 664 2014-01-29 LTTng modules 2.4.0-rc3
 665         * Fix: tracepoint event name mapping at unregister
 666         * Fix: tracepoint name remapping
 667         * Fix: enable event error path memory corruption
 668         * Update kvm instrumentation to Linux 3.13
 669         * Update sched instrumentation to Linux 3.13
 670         * Fix: provide more precise error report for enable event
 671         * Fix: quote event name in metadata
 672         * Add version info to lttng-tracer.ko modinfo
 673
 674 2013-12-10 LTTng modules 2.4.0-rc2
 675         * Fix: client_packet_header() uses wrong packet
 676         * Cleanup: fix typo in ring buffer backend comment
 677         * Fix: handle unknown event type parameter
 678         * Fix: eliminate timestamp overlap between packets
 679         * gcc blacklist: only apply when building with gcc
 680         * Blacklist ARM gcc 4.8.0, 4.8.1, 4.8.2
 681
 682 2013-11-15 LTTng modules 2.4.0-rc1
 683         * Update ext4 instrumentation to Linux 3.12
 684         * Update RCU instrumentation to Linux 3.12
 685         * Update btrfs instrumentation to 3.12 kernel
 686         * Update vmscan instrumentation to Linux 3.12
 687         * update: kmem instrumentation 3.12 kernel support
 688         * lttng-statedump-impl: Use generic hard irqs for Linux >= 3.12
 689         * lttng-statedump-impl: Fix lttng_list_interrupts for empty implementation
 690         * Import fix from LTSI: 3.4+ RT kernels use CONFIG_PREEMPT_RT_FULL
 691         * Add new tracepoint in KVM
 692         * Blacklist kernels 3.10.13 and 3.11.2
 693         * LTTng trace-clock: shrink kernel blacklist
 694         * Metadata flush writes data from the cache
 695         * Per-stream ioctl to get the current timestamp
 696         * LTTng ringbuffer ABI calls for index generation
 697         * Prepare LTTng override of ring buffer fops
 698         * Blacklist Linux kernels 3.10+
 699
 700 2013-09-03 LTTng modules 2.3.0
 701         * Fix: metadata stream should not reference session
 702         * Fix: btrfs: support 3.11 Linux kernel
 703         * statedump: remove KERN_DEBUG messages
 704         * Fix: ext4: add missing tracepoints for 3.11 kernel
 705         * Fix: ext4: Linux 3.11 support
 706         * Fix: ext3: 3.11 Linux support
 707         * Fix: statedump nsproxy 3.11 Linux support
 708
 709 2013-08-30 LTTng modules 2.3.0-rc2
 710         * Fix: metadata lttng channel refcount
 711         * README: lttng-modules incompatible with lttng 0.x patchset
 712
 713 2013-07-17 LTTng modules 2.3.0-rc1
 714         * Fix: kvm x86 probes side-effect
 715         * Fix: allow get/put subbuf in loop for metadata stream
 716         * Add support for kvm x86 specific tracepoints
 717         * Add mainline headers for kvm x86 tracepoints
 718         * Remove old 3.0.4 x86-64 extracted syscall info
 719         * Point the x86-64 overrides to newly extracted 3.10-rc7 files
 720         * Add syscalls extracted files from a 3.10-rc7 kernel
 721         * Improve documentation of the syscall extractor script
 722         * Fix: double length of __dynamic_len array
 723         * Fix printk instrumentation
 724         * Introduce __dynamic_array_enc_ext_2() and tp_memcpy_dyn_2()
 725         * Fix: ring buffer: get_subbuf() checks should be performed on "consumed" parameter
 726         * Fix: SWITCH_FLUSH new sub-buffer checks
 727         * Fix: ring buffer: handle concurrent update in nested buffer wrap around check
 728         * Cleanup: lib_ring_buffer_switch_new_end() only calls subbuffer_set_data_size()
 729         * Revert "Cleanup: ring buffer: remove lib_ring_buffer_switch_new_end()"
 730         * Fix: handle writes of length 0
 731         * Fix: ring buffer: RING_BUFFER_FLUSH ioctl buffer corruption
 732         * Cleanup: ring buffer: remove lib_ring_buffer_switch_new_end()
 733         * print warning and return -EBUSY on double get_subbuf()
 734         * Add header to fix compilation of syscalls-extractor on 3.9 kernel
 735         * Fix: don't do 0 byte event reservation
 736         * Document that payload size need to be greater than 0
 737         * Fix build and load against linux-2.6.33.x
 738         * Fix: add missing CONFIG_COMPAT around lib_ring_buffer_compat_ioctl
 739         * Metadata cache and multiple metadata channels
 740         * fix block instrumentation probe signature mismatch for 3.9.x kernels
 741         * fix: block instrumentation: NULL pointer dereference
 742         * Update rcu instrumentation to 3.9.[0-4]
 743         * Fix CPU hotplug section mismatches
 744         * Add system calls definitions for powerpc-32
 745         * Remove bashism in lttng-syscalls-generate-headers.sh
 746         * Update ARM (32 bit) syscall tracepoints to 3.4
 747
 748 2013-05-09 LTTng modules 2.2.0-rc2
 749         * Remove useless lttng_metadata probe
 750         * Fix: warning kvm_trace_exit_reason redefined for 3.9 kernel
 751         * Fix: 3.9.0 block layer instrumentation build
 752         * Revert "Stop build if CONFIG_TRACEPOINTS is not set"
 753         * Stop build if CONFIG_TRACEPOINTS is not set
 754         * Add comments to endifs.
 755         * Fix: remove ARM set_tls system call override
 756         * Cleanup: arm sys_mmap whitespace
 757         * Clean up using global_dirty_limit wrapper for writeback probe
 758
 759 2013-03-29 LTTng modules 2.2.0-rc1
 760         * Update README
 761         * Fix: vmscan instrumentation build
 762         * writeback instrumentation: remove duplicated structures
 763         * block: update instrumentation to 3.9 rc kernel
 764         * rcu: update to 3.9 rc kernel instrumentation
 765         * workqueue instrumentation: remove duplicated structures
 766         * Rename odd event names
 767         * Introduce API to remap event names exposed by LTTng
 768         * lttng-module: sched.h: Fix compilation on 3.9 kernel
 769         * Fix Linux 3.8 btrfs probe warning
 770         * Fix Linux 3.8 ext4 probe support
 771         * Fix 3.8 kernel support: namespace lttng_is_signed_type()
 772         * Fix: don't flush-final for offset 0 if reader is on sub-buffer
 773         * instrumentation sched: add missing fork pid info
 774         * Fix check in lttng_strlen_user_inatomic
 775         * instrumentation: sync with Linux commit a1ce392
 776         * Fix: statedump: missing locking, use lttng_iterate_fd
 777         * Implement lttng_iterate_fd wrapper
 778         * Instrumentation cleanup: kmem events should print hex pointers
 779         * Fix compilation of ext4 and btrfs tracepoints on 2.6.40 kernels
 780         * Fix: statedump hang/too early completion due to logic error
 781         * Fix: statedump hang due to incorrect wait/wakeup use
 782         * put_ulong calls in lib_ring_buffer_compat_ioctl() should be compat
 783         * wrapper/perf.h: Fix kernel version condition
 784         * Add new kernel probes instrumentation
 785         * Update kernel probes to more detailed match to kernel versions
 786         * Fix possible kernel build errors with linux-patches
 787         * Add missing MIT license text to 3 files under this license
 788         * Update sites using kernel version checking macro to new range
 789         * Make upper bound of kernel version checking macro exclusive
 790         * sock instrumentation: fix fields to get referenced values
 791         * ext3 instrumentation: fix of assignment code conversion
 792         * sched instrumentation: rename "pid" fields in sched_process_exec
 793         * Remove remaining semicolons in TP_fast_assign blocks
 794         * Fix compilation for 3.0 kernels that are named 2.6.40
 795         * Fix compilation for 3.0 branch (>= 3.0.39)
 796         * Add kernel version checking macro
 797         * Remove semicolons in TP_fast_assign blocks
 798         * Add ifdefs to net probe to support Linux 2.6.39
 799         * Add kernel probes for supplementary subsystems
 800         * Check if interrupt action name is not null in statedump
 801         * Fix exec instrumentation: only for kernels 3.4.0 and higher
 802         * Add TRACE_EVENT(sched_process_exec) to sched.h
 803         * lib/ringbuffer/frontend_api.h: Include linux/prefetch.h.
 804         * Fix warning with 3.6.0 kernel
 805         * ABI with support for compat 32/64 bits
 806         * Perform calculation on bit size in 64-bit
 807         * Use uint64_t for packet header content size and packet size
 808         * Fix: compat layer only on supported architectures
 809         * Fix ring buffer 32/64 bits compat
 810         * Fix cleanup: move lttng-tracer-core.h include to lib ringbuffer config.h
 811         * Fix ring_buffer_frontend.c: missing include lttng-tracer-core.h
 812         * Fix: statedump missing check for NULL namespace
 813
 814 2012-09-10 LTTng modules 2.1.0-rc1
 815         * fix timestamps on architectures without CONFIG_KTIME_SCALAR
 816         * Support for linux kernels 2.6.32 through 2.6.37
 817         * Document limitation of vppid and ppid context wrt eventual RCU instrumentation
 818         * Cleanup: no need to hold RCU read-side lock when reading current nsproxy
 819         * Add env hostname information
 820         * Fix: lttng_statedump_process_state for each PID NS has infinite loop
 821         * lttng_statedump_process_state for each PID NS
 822         * Support the hostname context
 823         * Fix: statedump namespaced pid, tid and ppid
 824         * Fix: statedump: disable vm maps enumeration
 825         * Fix: ensure userspace accesses are done with _inatomic
 826         * Fix: vppid context should test for current nsproxy
 827         * Add MIPS system call support
 828         * Change mode of lttng-syscalls-generate-headers.sh to 755
 829         * cleanup: fix typo in syscall instrumentation header
 830         * Cleanup: remove trailing whitespace in README
 831         * trace event: introduce TP_MODULE_NOAUTOLOAD and TP_MODULE_NOINIT
 832         * LTTng: probe-statedump: add #include <linux/sched.h>
 833         * fix: signal_generate event should print utf8 for comm field
 834         * Makes write operation a parameter for tp_memcpy macro
 835         * Add coding style document
 836         * Update instrumentation/events README file
 837         * Add makefile target for preprocessor
 838         * Fix: free_event_id check should compare unsigned int with -1U
 839         * Use unsigned long type for events discarded counter
 840         * Fix: update signal instrumentation for 3.4 kernel
 841         * LTTng Modules ARM syscall instrumentation
 842         * Fix: generate header missing echo -e for escape chars
 843         * Fix: add missing uaccess.h include (for ARM)
 844         * README: Document that CONFIG_MODULES is required
 845         * Fix: README typo
 846         * Fix: document required and optional kernel config options in README
 847
 848 2012-03-29 LTTng modules 2.0.1
 849         * Fix: is_compat_task !CONFIG_COMPAT compile error on kernels >= 3.3
 850
 851 2012-03-20 LTTng modules 2.0.0
 852         * First STABLE version
 853         * Add version name
 854
 855 2012-03-20 LTTng modules 2.0.0-rc4
 856         * Update README and add version name place-holder
 857
 858 2012-03-16 LTTng modules 2.0.0-rc3
 859         * Fix clock offset 32-bit multiplication overflow
 860         * Fix : wrong assign of fd in state dump
 861         * License cleanup, ifdef namespace cleanup
 862         * Fix: ensure power of 2 check handles 64-bit size_t entirely
 863
 864 2012-03-02 LTTng modules 2.0.0-rc2
 865         * Fix: dmesg printout should not print metadata warnings
 866         * Fix: use transport name as channel name
 867         * Fix: Return -EINVAL instead of print warning if non power of 2 size/num_subbuf
 868
 869 2012-02-20 LTTng modules 2.0.0-rc1
 870         * Standardize version across toolchain
 871         * statedump: Use old macro name for kernel 2.6.38
 872
 873 2012-02-16 LTTng modules 2.0-pre15
 874         * Add timer instrumentation
 875         * fix: need to undef mainline define
 876         * fix: Include signal.h instead of irq.h for prototype match check
 877         * Add signal instrumentation
 878
 879 2012-02-16 LTTng modules 2.0-pre14
 880         * syscall tracing: sys_getcpu
 881         * Add sys_clone x86 instrumentation
 882         * statedump: fix include circular dep
 883         * Implement state dump
 884
 885 2012-02-09 LTTng modules 2.0-pre13
 886         * Update README
 887         * environment: write sysname, release, version, domain to metadata
 888         * Allow open /proc/lttng for read & write
 889
 890 2012-02-02 LTTng modules 2.0-pre12
 891         * Add x86 32/64 execve syscall instrumentation override
 892         * Remove unused defines
 893         * Add padding to ABI
 894         * Use LTTNG_KERNEL_SYM_NAME_LEN
 895         * Update version to 1.9.9
 896         * Add missing double-quotes to clock uuid
 897         * clock: read bootid as clock monotonic ID
 898         * Fix comment
 899         * Cleanup comment
 900         * clock: output clock description in metadata
 901         * Properly fix the timekeeping overflow detection
 902         * Fix init bug
 903         * rename lib-ring-buffer to lttng-lib-ring-buffer
 904         * Remove #warning
 905         * Mass rename: ltt_*/ltt-* to LTTNG_*/LTTNG-*
 906         * Update TODO
 907         * Update TODO
 908         * Remove debugfs file (keep only proc file)
 909         * Rename lttng-debugfs-abi files to lttng-abi
 910
 911 2011-12-13 LTTng modules 2.0-pre11
 912         * Fix OOPS caused by reference of config pointer
 913         * Gather detailed info from x86 64 32-bit compat syscall instrumentation
 914         * lttng lib: ring buffer move null pointer check to open
 915         * lttng lib: ring buffer remove duplicate null pointer
 916         * lttng lib: ring buffer: remove stale null-pointer
 917         * lttng wrapper: add missing include to kallsyms wrapper
 918         * lttng: cleanup one-bit signed bitfields
 919         * Add TODO file
 920         * Update symbol name length max size to 256
 921         * Fix last modifications to string_from_user operations
 922         * Document that depmod needs to be executed by hand
 923         * Fix strlen_user fault space reservation
 924         * Fix tp_copy_string_from_user handling of faults
 925         * Disable block layer tracing support for kernels < 2.6.38
 926         * lttng context: perf counter, fix 32-bit vs 64-bit field size bug
 927         * Update trace clock warning to match the current development plan
 928         * ringbuffer: make ring buffer printk less verbose
 929         * Makefile: do not run depmod manually
 930
 931 2011-09-30 LTTng modules 2.0-pre10
 932         * x86-32: override sys_mmap syscall instrumentation
 933         * Fix cast warning
 934
 935 2011-09-29 LTTng modules 2.0-pre9
 936         * x86 32 syscalls: fix !CONFIG_UID16
 937         * Use __string_from_user
 938         * Add __string_from_user
 939         * Rename "comm" context to "procname"
 940         * Fetch "type" name field for mount syscall
 941         * Create common override file for all architectures
 942         * Shrink stack size usage
 943         * Cleanup: remove unused lttng-compat-syscalls.c file
 944         * Support detailed compat syscalls on x86_64
 945         * Fix syscall table
 946         * Add disabled compat syscalls detail (work in progress)
 947         * Add config compat support for detailed x86_32 syscalls
 948         * Handle newer 3.1+ perf API
 949         * Add dummy x86-32 override headers
 950         * Bind x86-32 syscall headers
 951         * Add x86-32 syscall headers
 952         * Add check for KALLSYMS_ALL in syscall extraction script
 953         * Automate string extraction for syscalls
 954         * Automate syscall filename/pathname extraction
 955         * Add exit to ring_buffer_frontend so module is unloadable
 956         * Add sys_open filename (x86_64)
 957         * Add missing memcpy callback
 958         * copy_from_user and memset
 959         * Add missing alignment after header write
 960         * lib ring buffer: add frontend init as module_init
 961         * lib ring buffer frontend: add missing lock initialization
 962         * ARM: Set bit 0 for thumb mode in kallsyms_lookup_name returned address (missing file)
 963         * ARM: Set bit 0 for thumb mode in kallsyms_lookup_name returned address
 964         * Create override for sys_mmap
 965         * Rename syscalls -> syscall in LTTng ABI
 966         * Use different event name for compat syscalls
 967         * Allow trace syscall table override
 968         * Add dummy override files
 969         * syscall detail: add override capability
 970         * Add pointer pretty-print heuristics
 971         * Add __field_hex
 972         * Rename sys exit errno into ret
 973         * Enable detailed syscalls only for native x86_64
 974         * Use "unknown" for compat syscalls
 975         * Disable x86-64 specific detailed syscalls for now, until we deal with 32-bit compat
 976         * Fix syscall exit
 977         * Fix sys exit
 978         * Only enable detailed syscalls for x86_64 for now
 979         * Merge unknown syscall method with extended detail method
 980         * Add underscore prefix before event names
 981         * Add syscalls pointers detailed syscall tracing
 982         * Use perl for regexp
 983         * Support generation of syscall probes for those with pointers
 984         * Support detailed syscalls with 0 arguments
 985         * detailed syscall tracing (work in progress)
 986         * Expose /proc/lttng file
 987         * Implement detailed syscall event probe
 988         * Disable perf build for < 2.6.33 kernels
 989         * Syscall detail mode: generate syscall table
 990         * block instrumentation: write cmd as hex sequence
 991         * lttng-events TRACE_EVENT generator cleanup
 992         * block layer instrumentation: fix cmd field
 993         * Remove 0 args syscalls for now from type-aware syscall cb generator
 994         * Generate trace syscall table macros
 995         * Put syscall tracing without arg types back in place
 996         * Detailed system call tracing (TRACE_EVENT() generation for integer support)
 997         * lttng events probes: don't clash with "ctx" variable name
 998         * lib ring buffer must take private pointer copy before decrementing refcount
 999
1000 2011-08-16 LTTng modules 2.0-pre8
1001         * Fix metadata buffer wait/wakeup
1002
1003 2011-08-12 LTTng modules 2.0-pre7
1004         * Add missing module refcount to lttng_tracepoint_list_fops
1005         * Add license info about lib/ringbuffer/ring_buffer_mmap.c being GPLv2