ChangeLog

   1 2017-02-17 (National Cabbage Day) LTTng modules 2.8.4
   2         * Fix: nmi-safe clock on 32-bit systems
   3         * Fix: asoc instrumentation for RHEL 7.3
   4         * Fix: SCSI instrumentation for SLES12 SP2
   5         * Add SUSE Linux Enterprise kernel version tests
   6         * Fix: preemptible and migratable context error handling
   7
   8 2016-10-13 (International Day for Failure) LTTng modules 2.8.3
   9         * Fix: bump stable kernel version ranges for clock work-around
  10
  11 2016-10-07 (National Frappé Day) LTTng modules 2.8.2
  12         * Fix: show warning for broken clock work-around
  13         * Fix: work-around upstream Linux timekeeping bug
  14
  15 2016-10-03 (National Techies Day) LTTng modules 2.8.1
  16         * Fix: handle large number of pages or subbuffers per buffer
  17         * Fix: unregister cpu hotplug notifier on buffer alloc error
  18         * Fix: sa_family is of type unsigned short
  19         * Fix: check for sizeof sa_family to save sa_family in accept and connect
  20         * Cleanup: reuse code in accept() and accept4() instrumentation
  21         * Add x86-64 override for accept4 syscall
  22         * Fix: use printk_once() for wrapper warning messages
  23         * Fix: btrfs instrumentation for 4.8 kernel
  24         * Fix: update mm_vmscan instrumentation for kernel 4.8
  25         * Fix: napi instrumentation for 4.8 kernels
  26         * Fix: update block instrumentation to compile on 4.8 kernels
  27         * Fix: timer wrapper: support kernels >= 4.8
  28         * Fix: x86-64 accept instrumentation
  29         * Fix: Add support for 4.6.4-rt8 kernel
  30         * Fix: update scsi instrumentation for 4.7+ kernels
  31         * Fix: Use fs_initcall instead of rootfs_initcall
  32         * Fix: Add kernel configuration for lttng clock plugin
  33         * Fix: the clock plugin must be initiated before first use of the clock
  34         * Fix: tests/Kbuild for older kernels
  35         * Fix: annotate bytecode interpreter for kernel stack validator
  36
  37 2016-05-20 (Bike-to-Work Day) LTTng modules 2.8.0
  38         * Fix: ring buffer: honor switch parameter type in remote switch
  39         * Fix: only flush non-metadata channels
  40         * Fix: don't perform extra flush on metadata channel
  41         * Fix: flush empty packets on snapshot channel
  42         * Fix: do not generate packet at destroy after stop
  43         * Fix: compat ioctl for flush/get metadata version
  44         * Fix: ctf_string() should handle NULL pointers
  45         * Fix: portability: no arith on void pointer
  46         * Fix: add missing tests/Kbuild
  47         * Test clock override plugin
  48         * Fix: add modules target to base Makefile
  49         * Fix: make clean does not include dot-config
  50         * Fix: trigger build error if CONFIG_TRACEPOINTS is not set
  51         * Documentation: document that CONFIG_MODULES not required when builtin
  52         * Fix: mm_page_alloc_extfrag instrumentation for kernel 3.16.35
  53         * Fix: integer endianness metadata generation
  54         * Fix: endianness of integers received by filter
  55
  56 2016-04-26 LTTng modules 2.8.0-rc2
  57         * Fix: writeback probe on RHEL >= 3.10.0-327.10.1
  58         * Fix: RHEL kernel 3.10.0-327.13.1 compat
  59         * Fix: ctf_user_integer should not trigger page fault
  60         * Fix: lib_ring_buffer_copy_from_user_inatomic error handling
  61         * Add comment describing ioctl number duplication
  62         * Fix: remove unused gfpflags.h from btrfs and compaction instrumentation
  63         * Fix: Remove dead code from filter interpreter
  64         * Fix: x86 kvm mmutrace instrumentation for kernel < 3.6
  65         * Fix: mm_vmscan instrumentation: remove unused gfpflags.h include
  66         * Fix: use of uninitialized ret value in lttng_abi_create_event
  67         * Fix: kmem instrumentation: remove unused gfpflags.h include
  68         * Fix: 4.6 kernel: use in_compat_syscall
  69         * Fix: use BUG_ON instead of accessing array subscript above array bounds
  70         * Fix: Add granularity to RHEL kernel version checks
  71
  72 2016-03-18 (Awkward Moments Day) LTTng modules 2.8.0-rc1
  73         * Bump minor tracer ABI version
  74         * Fix: build against out-of-tree kernel build
  75         * probes/Kbuild: remove upper level header path
  76         * Move leftover relative include paths to system paths
  77         * syscall instrumentation: use system headers
  78         * tracepoint event instrumentation: use system headers
  79         * Use system include path in wrappers
  80         * libs: use system include paths
  81         * Use system header paths in core implementation files
  82         * Use system include paths in root directory headers
  83         * Use system include paths in probes
  84         * Update gitignore
  85         * Use system include paths in lttng-types.h
  86         * Use system include paths in lttng-tracepoint-event-impl.h
  87         * Use system include path in probes/define_trace.h
  88         * Use system include paths in probes/lttng-tracepoint-event-impl.h
  89         * Rename probes/lttng-events.h to probes/lttng-tracepoint-event-impl.h
  90         * Add makefile directory to include path
  91         * Fix: event ctx get size should be after chan ctx
  92         * Fix: filter interpreter with userspace strings
  93         * Fix: rename kvm x86 TRACE_SYSTEM to avoid name clash
  94         * Fix: format address fields as hexadecimal
  95         * PowerPC-64 ABIv1: add build error if KALLSYMS_ALL is missing
  96         * Fix: system call instrumentation overrides
  97         * Fix: page_alloc wrapper incorrect parenthesis
  98         * Fix: system call tracing for arm-64 compat !CONFIG_UID16
  99         * Fix: add struct user_msghdr forward declaration for older kernels
 100         * Cleanup: Remove unused lttng-types module
 101         * Fix: add missing versions and init call for page_alloc wrapper
 102         * Fix: Define lttng-tracer metadata only once
 103         * Fix: Add CONFIG_LTTNG to modules_install target
 104         * Fix: Use kbuild env instead of a custom var KERNELDIR
 105         * Update clock offset comment
 106         * clock offset: print negative value in metadata
 107         * Fix: handle negative clock offset
 108         * Fix: sched instrumentation for 4.1-rt11
 109         * Add RT patch version macros
 110         * Expect filter context identifiers starting with $ctx.
 111         * ARM64: wire up compat system calls
 112         * Add support for arm64 syscalls
 113         * Fix: Ubuntu kernel range for block_rq_complete
 114         * Fix: Ubuntu kernel range for mm_page_alloc_extfrag
 115         * Fix: update vmscan instrumentation for kernel 4.5
 116         * Fix: check reference counts for overflow
 117         * Fix: RHEL 7.2 scsi instrumentation
 118         * Fix: RHEL 7.2 kvm instrumentation
 119         * Kconfig: describe both module and in-kernel compilation options
 120         * Add comments and indentation to Makefile
 121         * Add support for built-in kernel build
 122         * Rename sub makefiles to Kbuild
 123         * Cleanup sub makefiles
 124         * Make goals configurable with CONFIG_LTTNG
 125         * Fix: Use generic raw_irqs_disabled_flags
 126         * Fix: Use MAX_RT_PRIO offset in sched_wakeup_template
 127         * Fix: update sched instrumentation for kernel 4.4.0
 128         * Bump version number for development branch
 129         * Fix: interruptible context: reversed logic
 130         * Contexts for RT debugging
 131         * Fix: instrumentation: v4lv2 missing include
 132         * Fix: header size larger than 256 bytes
 133         * Instrument x86 page faults
 134         * Fix: irq_vectors TRACE_SYSTEM name
 135         * Instrument x86_irq_vectors
 136         * Fix: tracepoint listing misses last loaded probe
 137         * Fix: lttng trace-clock needs to disable preemption
 138         * Tracepoint event: add "TP_code_post()"
 139         * Implement array and sequence bitfields
 140         * Fix: kmem: add mm.h include
 141         * Add page frame number (pfn) to kmem page events
 142         * Use pfn rather than struct page in ring buffer array
 143         * Implement clock plugin support
 144         * Command to regenerate the metadata of a session
 145         * Fix: writeback instrumentation update for 4.3 Linux kernel
 146         * Fix: update sched wakeup instrumentation for 4.3 kernel
 147         * Fix: lttng-test build failure for kernels < 3.0
 148         * Use 3.18 syscall instrumentation for MIPS32
 149         * Update the MIPS32 syscall instrumentation to 3.18
 150         * Fix: Move pipe override to the arch specific pointers_override.h
 151         * Implement lttng test module
 152         * Cleanup: remove logically dead code
 153         * Fix: filter validator use after free
 154         * Fix: use after free in channel release
 155         * Fix: non-enabler events should be disabled by default
 156         * Fix: build failure on 2.6.36
 157         * Cleanup: split bdi_dirty_ratelimit with ifdef into separate macros
 158         * Fix: writeback instrumentation for 4.2 kernels
 159         * Fix: mm_page_alloc_extfrag instrumentation for kernel 3.18.10
 160         * Add stream instance id to the packet header
 161         * Add a packet sequence number
 162         * Fix: kmem probe with Ubuntu 3.13 kernels
 163         * Fix: disable kvm probe if lapic.h isn't found
 164         * Fix: timer instrumentation for 4.2 kernels
 165         * Fix: ext4 instrumentation for 4.2 kernels
 166         * Fix: kvm instrumentation for 4.2 kernels
 167         * Fix: allow LTTng to be built within kernel tree
 168
 169 2015-07-15 (Pet Fire Safety Day) LTTng modules 2.7.0-rc1
 170         * Fix: Building the event list fails on fragmented memory
 171         * Fix: use after free on metadata cache reallocation
 172         * Fix: version checks for kernel 4.0
 173         * Fix: Incorrect Ubuntu kernel patchlevel
 174         * Fix: cpu-id context should use int type
 175         * Implement cpu-id context
 176         * Implement cpu_id context for filtering
 177         * Fix: context printk mismatch on error
 178         * Cleanup: misleading comment about deferrable timer
 179         * Fix: arm-32 build
 180         * Fix: Update kmem event for Ubuntu's 3.16 kernel
 181         * Fix: RHEL 7.1 block instrumentation
 182         * Fix: add RHEL version macros
 183         * Fix: add missing parenthesis in ubuntu version check
 184         * Fix: remove regmap instrumentation for kernels < 4.1
 185         * Fix: Update kmem event for recent Ubuntu kernel
 186         * Fix: missing statedump end event when block device listing available
 187         * Fix: don't generate incorrect macros for debian/ubuntu version check
 188         * Revert "Fix: build against Ubuntu kernels"
 189         * Fix: build against Ubuntu kernels
 190         * Add namespace info in sched_fork and statedump
 191         * Fix: ext4 instrumentation: flags parameter did not exist prior to 3.11
 192         * Fix: printk instrumentation: remove "condition" tracepoints
 193         * Fix: regmap build against kernel 4.0 kernel headers
 194         * Add mmu_valid_gen field to mmutrace events
 195         * Fix: add missing x86 mmutrace kernel header include
 196         * Fix: x86 mmutrace event extra field for kernels >= 3.11
 197         * Fix: remove execute flag from kvm.h file
 198         * Fix: build x86 kvm probes on kernels >= 4.1-rc1
 199         * Fix: compilation on 4.1-rc1 kernel, remove unused WB_WORK_REASON
 200         * Fix: 4.1-rc1 Linux build and regmap instrumentation
 201         * Fix: don't clash with older Debian kernel versions
 202         * Fix: update get_pfnblock_flags_mask wrapper for debian kernels
 203         * Fix: discover Debian API
 204         * Fix: Update README.md to match reality: kernels >= 2.6.36 are supported
 205         * Fix: atomic.h wrapper for kernels < 2.6.37
 206         * Fix: disable x86 kvm instrumentation for kernels < 2.6.38
 207         * Fix: add missing types.h include for older kernels
 208         * Fix: add hlist lttng wrappers
 209         * Fix: add struct file_handle forward declaration
 210         * Fix: string length calculation reversed user vs kernel args
 211         * Fix: use lttng_rcu_dereference within lttng-syscalls.c
 212         * Fix: add lttng rcu wrapper to allow tracing RCU
 213         * Fix: double-unlock of session mutex
 214         * Fix: check that class and instance prototype match
 215         * Fix: lttng-events.h check function takes void
 216         * Fix: regmap instrumentation for Linux 3.19.4 and 4.0
 217         * Fix: kernels >= 2.6.33 put utsrelease.h in generated/
 218         * Fix: Include utsrelease.h in lttng-kernel-version.h
 219         * Fix: ext4 ext4_da_write_pages instrumentation for kernels < 3.11.0
 220         * Fix: old kernels need module.h included before vermagic.h
 221         * Fix: net instrumentation for kernels 2.6.39 and below
 222         * Fix: version condition in makefile
 223         * Implement wrapper around get_pfnblock_flags_mask
 224         * Be more restrictive in provider name check
 225         * Fix: net instrumentation namespacing
 226         * Fix: compaction instrumentation namespacing
 227         * Fix: Support 4.x kernel versions in Makefile
 228         * Fix: remove stale TP_STRUCT_entry from kvm instrumentation
 229         * Fix: add missing module.h include to lttng-probe-user.c
 230         * Fix: use lttng hlist wrapper in wildcard and filter
 231         * Fix: namespace asoc and kmem instrumentation
 232         * Fix: update instrumentation after wildcard rebase
 233         * Fix: lttng_abi_syscall_list does not need to be exported
 234         * Migrate ARM, powerpc, MIPS syscall instrumentation to TP_FIELDS
 235         * Remove now unused syscalls.h from lttng-modules
 236         * Filter: start with enabler "disabled"
 237         * Fix coverity warning about sizeof(void **) != sizeof(void *)
 238         * Fix length type and text sequence base
 239         * Fix: TP_FIELDS: add missing headers
 240         * Migrate syscall instrumentation to TP_FIELDS
 241         * Migrate tracepoint instrumentation to TP_FIELDS
 242         * Implement filtering infrastructure
 243         * syscall wildcards: apply syscall filtering
 244         * Implement syscall wildcard support
 245         * Implement tracepoint wildcard support
 246         * Namespace all tracepoints
 247         * Implement list.h wrapper for hlist in older kernels
 248         * Implement listing of pid tracker content
 249         * Implement PID tracking
 250         * Fix: mm_page_alloc_extfrag instrumentation for kernel 3.14.36
 251         * Fix: update writeback instrumentation for kernel 4.0+
 252         * Fix: compaction mm_compaction_isolate_template update for Linux 4.0+
 253         * Fix: kmem instrumentation update for mm_page_alloc_extfrag kernel 3.19.2+
 254         * Fix: kmem instrumentation: mm_page_alloc extfrag change_ownership field
 255         * Fix: missing parenthesis in offset_align_floor
 256         * Fix: implement time.h wrapper for FD_ISSET
 257         * Fix: update sched instrumentation for 3.19+ kernels
 258         * Fix: update rcu instrumentation for 3.19+ kernels
 259         * Fix: update scsi instrumentation for 3.19+ kernels
 260         * Fix: update module instrumentation for 3.19+ kernels
 261         * Fix: Add f_dentry wrapper for 3.19+ kernels
 262         * Fix: introduce lttng_get_unused_fd() wrapper for 3.19 kernels
 263         * Fix: lttng_this_cpu_ptr wrapper for kernel 3.19+
 264         * Fix: Update btrfs instrumentation for 3.18 Linux kernel
 265         * Fix compile error on kernel 3.0.101 with CONFIG_PERF_EVENTS
 266         * Conditional compilation introduced by lttng-modules commit
 267         * Fix: compaction instrumentation update for 3.14.x stable kernels
 268         * Fix: context alignment not properly handled
 269         * Fix compilation on Linux kernel >= 3.18.0
 270         * Fix: build for architectures without HAVE_SYSCALL_TRACEPOINTS
 271
 272 2014-10-20 LTTng modules 2.6.0-rc1
 273         * Expose lttng-modules ABI version ioctl
 274         * Fix: syscall list ioctl number conflict
 275         * lttng-modules: fix build for non-x86
 276         * Fix: syscall listing of session
 277         * Print build warning when writeback probe is disabled
 278         * Add atomic.h wrapper for before/after atomic
 279         * Fix compilation on Ubuntu 14.10
 280         * Fix: export name as text array in writeback
 281         * Cleanup: remove unused trace_clock_read32()
 282         * Use 3.17 ktime_get_mono_fast_ns() new API
 283         * Check for stale version.h files
 284         * Fix: compile lttng_statedump_process_ns on Ubuntu
 285         * Reverse version check logic in lttng_statedump_process_ns
 286         * Fix block_rq_complete TP on Ubuntu kernel
 287         * Introduce macros to check Ubuntu kernel version
 288         * Sync writeback tracepoints from mainline
 289         * Fix: redefinition of DEFINE_WRITEBACK_EVENT
 290         * Fix: hander negative get_syscall_nr return value
 291         * Fix: statedump: close_on_exec flag backward compat
 292         * Fix instrumentation of vmscan for older kernels
 293         * Fix: older kernels (3.2.x) don't undefine TRACE_SYSTEM
 294         * Fix: syscall listing: handle "enable all syscall"
 295         * Fix: don't allow disabling syscalls when none are enabled
 296         * Fix: syscall: fail disable all if all already disabled
 297         * Fix: syscall filtering: NULL pointer deref
 298         * Cleanup: list syscall without syscall_entry prefix
 299         * Fix: syscall_list_show NULL pointer deref
 300         * implement syscall mask getter
 301         * Cleanup: lttng-abi.h coding style
 302         * syscall listing: show syscall ID
 303         * Allow events with same name to be enabled for each channel
 304         * ABI: use enable a syscall ABI field name
 305         * Implement syscall listing
 306         * Fix: tracepoint list anonymous file name
 307         * Fix: syscall filtering: disable all syscalls
 308         * syscall tracing: input/output parameter handling for all arch
 309         * lttng-get-syscall-inout.sh depends on bash
 310         * Fix generate syscall header script: add missing escape char
 311         * syscall instrumentation: handle copy_from_user return value
 312         * Rename LTTng syscall instrumentation macros
 313         * Rename LTTng instrumentation macros
 314         * Extract input/output arguments from accept and connect syscalls
 315         * syscall: extract pipe and pipe2 output args
 316         * Remove sys_ prefix from syscall names
 317         * System call inout/output arg processing
 318         * Update syscall inout table
 319         * Add syscall inout table
 320         * Extract syscall exit ret value on x86 32/64
 321         * Extract system call exit return value
 322         * Syscall filtering: apply to syscall exit
 323         * System call filtering
 324         * asoc.h: fix build with v3.17 kernel
 325         * Fix: lttng-modules teardown NULL pointer OOPS
 326         * Fix: handle concurrent flush vs get_next_subbuf on metadata cache
 327         * Modernize README using Markdown
 328         * Fix: OOT lttng_logger tracepoint not visible with signed kernels
 329         * Add cscope to gitignore
 330         * Update kvm instrumentation: compile on 3.17-rc1
 331         * Update statedump to 3.17 nsproxy locking
 332         * Fix: noargs probes should calculate alignment and event length
 333         * Update compaction instrumentation to 3.16 kernel
 334         * Update vmscan instrumentation to 3.16 kernel
 335
 336 2014-07-16 (Take Your Poet to Work Day) LTTng modules 2.5.0
 337         * (no change)
 338
 339 2014-06-27 LTTng modules 2.5.0-rc2
 340         * Fix: statedump: check whether "files" is NULL, RCU semantic fix
 341         * Fix: statedump handle oom case, handle errors
 342         * Fix: correct typo in kernel version number
 343         * Fix: blktrace instrumentation for backported branches
 344         * Fix: statedump block devices OOPS
 345
 346 2014-05-28 (International Hamburger Day) LTTng modules 2.5.0-rc1
 347         * Add TID field to some block_* events
 348         * Fix: refuse overwrite mode buffers with less than two subbuffers
 349         * Fix: lttng modules system call generation script
 350         * Dump FD flags and mode on state dump
 351         * Fix: incorrect rwbs field type in block_bio_queue
 352         * Fix: blktrace instrumentation for v3.2.58+ stable branch
 353         * Fix: pass proper args when writing commit counter
 354         * Cleanup: lib ringbuffer: pagecpy has unsigned semantic
 355         * Fix: allow racy tracepoint string input from kernel and userspace
 356         * Statedump event for block devices
 357         * Fix: update v4l2 instrumentation to 3.15 kernel
 358         * Fix: ext4 update instrumentation to 3.15 kernel
 359         * Fix: update block instrumentation to 3.15 kernel
 360         * Fix: module instrumentation: update to 3.15 kernel
 361         * Adapt to 3.15 tracepoint API
 362         * Kernel 3.15 don't define map unmap for pipe
 363         * Fix: add missing module version in v4l2 probe
 364         * Add V4L2 instrumentation
 365         * Fix: rcu instrumentation: add const qualifier to char pointers
 366         * Fix: add missing module version information
 367         * Use kernel 3.13 syscall tables for MIPS32
 368         * Add MIPS32 syscalls extracted from a 3.13 kernel
 369         * Fix: block instrumentation: < 3.14 don't have bi_iter
 370         * Fix: update btrfs instrumentation to kernel 3.14
 371         * Fix: update block layer instrumentation to kernel 3.14
 372         * Fix: remove __exit annotation
 373         * Fix file permissions for lttng-statedump-impl.c
 374         * LTTng logger ABI
 375
 376 2014-02-28 (Public Sleeping Day) LTTng modules 2.4.0
 377         * Fix: load state dump even if work-around lookup fails
 378         * Cleanup: fix comment
 379         * Fix: correctly version kvm events to build against v3.0 kernel
 380         * Add extraversion (e.g. -rc4) to lttng-tracer modinfo
 381
 382 2014-02-14 LTTng modules 2.4.0-rc4
 383         * Fix: use after free in ring buffer clients
 384         * Fix: Add statedump exit so module is not permanent
 385         * Cleanup: move callback init to static initialization
 386         * Fix: OOT lttng-statedump tracepoints not visible with signed kernels
 387
 388 2014-01-29 LTTng modules 2.4.0-rc3
 389         * Fix: tracepoint event name mapping at unregister
 390         * Fix: tracepoint name remapping
 391         * Fix: enable event error path memory corruption
 392         * Update kvm instrumentation to Linux 3.13
 393         * Update sched instrumentation to Linux 3.13
 394         * Fix: provide more precise error report for enable event
 395         * Fix: quote event name in metadata
 396         * Add version info to lttng-tracer.ko modinfo
 397
 398 2013-12-10 LTTng modules 2.4.0-rc2
 399         * Fix: client_packet_header() uses wrong packet
 400         * Cleanup: fix typo in ring buffer backend comment
 401         * Fix: handle unknown event type parameter
 402         * Fix: eliminate timestamp overlap between packets
 403         * gcc blacklist: only apply when building with gcc
 404         * Blacklist ARM gcc 4.8.0, 4.8.1, 4.8.2
 405
 406 2013-11-15 LTTng modules 2.4.0-rc1
 407         * Update ext4 instrumentation to Linux 3.12
 408         * Update RCU instrumentation to Linux 3.12
 409         * Update btrfs instrumentation to 3.12 kernel
 410         * Update vmscan instrumentation to Linux 3.12
 411         * update: kmem instrumentation 3.12 kernel support
 412         * lttng-statedump-impl: Use generic hard irqs for Linux >= 3.12
 413         * lttng-statedump-impl: Fix lttng_list_interrupts for empty implementation
 414         * Import fix from LTSI: 3.4+ RT kernels use CONFIG_PREEMPT_RT_FULL
 415         * Add new tracepoint in KVM
 416         * Blacklist kernels 3.10.13 and 3.11.2
 417         * LTTng trace-clock: shrink kernel blacklist
 418         * Metadata flush writes data from the cache
 419         * Per-stream ioctl to get the current timestamp
 420         * LTTng ringbuffer ABI calls for index generation
 421         * Prepare LTTng override of ring buffer fops
 422         * Blacklist Linux kernels 3.10+
 423
 424 2013-09-03 LTTng modules 2.3.0
 425         * Fix: metadata stream should not reference session
 426         * Fix: btrfs: support 3.11 Linux kernel
 427         * statedump: remove KERN_DEBUG messages
 428         * Fix: ext4: add missing tracepoints for 3.11 kernel
 429         * Fix: ext4: Linux 3.11 support
 430         * Fix: ext3: 3.11 Linux support
 431         * Fix: statedump nsproxy 3.11 Linux support
 432
 433 2013-08-30 LTTng modules 2.3.0-rc2
 434         * Fix: metadata lttng channel refcount
 435         * README: lttng-modules incompatible with lttng 0.x patchset
 436
 437 2013-07-17 LTTng modules 2.3.0-rc1
 438         * Fix: kvm x86 probes side-effect
 439         * Fix: allow get/put subbuf in loop for metadata stream
 440         * Add support for kvm x86 specific tracepoints
 441         * Add mainline headers for kvm x86 tracepoints
 442         * Remove old 3.0.4 x86-64 extracted syscall info
 443         * Point the x86-64 overrides to newly extracted 3.10-rc7 files
 444         * Add syscalls extracted files from a 3.10-rc7 kernel
 445         * Improve documentation of the syscall extractor script
 446         * Fix: double length of __dynamic_len array
 447         * Fix printk instrumentation
 448         * Introduce __dynamic_array_enc_ext_2() and tp_memcpy_dyn_2()
 449         * Fix: ring buffer: get_subbuf() checks should be performed on "consumed" parameter
 450         * Fix: SWITCH_FLUSH new sub-buffer checks
 451         * Fix: ring buffer: handle concurrent update in nested buffer wrap around check
 452         * Cleanup: lib_ring_buffer_switch_new_end() only calls subbuffer_set_data_size()
 453         * Revert "Cleanup: ring buffer: remove lib_ring_buffer_switch_new_end()"
 454         * Fix: handle writes of length 0
 455         * Fix: ring buffer: RING_BUFFER_FLUSH ioctl buffer corruption
 456         * Cleanup: ring buffer: remove lib_ring_buffer_switch_new_end()
 457         * print warning and return -EBUSY on double get_subbuf()
 458         * Add header to fix compilation of syscalls-extractor on 3.9 kernel
 459         * Fix: don't do 0 byte event reservation
 460         * Document that payload size need to be greater than 0
 461         * Fix build and load against linux-2.6.33.x
 462         * Fix: add missing CONFIG_COMPAT around lib_ring_buffer_compat_ioctl
 463         * Metadata cache and multiple metadata channels
 464         * fix block instrumentation probe signature mismatch for 3.9.x kernels
 465         * fix: block instrumentation: NULL pointer dereference
 466         * Update rcu instrumentation to 3.9.[0-4]
 467         * Fix CPU hotplug section mismatches
 468         * Add system calls definitions for powerpc-32
 469         * Remove bashism in lttng-syscalls-generate-headers.sh
 470         * Update ARM (32 bit) syscall tracepoints to 3.4
 471
 472 2013-05-09 LTTng modules 2.2.0-rc2
 473         * Remove useless lttng_metadata probe
 474         * Fix: warning kvm_trace_exit_reason redefined for 3.9 kernel
 475         * Fix: 3.9.0 block layer instrumentation build
 476         * Revert "Stop build if CONFIG_TRACEPOINTS is not set"
 477         * Stop build if CONFIG_TRACEPOINTS is not set
 478         * Add comments to endifs.
 479         * Fix: remove ARM set_tls system call override
 480         * Cleanup: arm sys_mmap whitespace
 481         * Clean up using global_dirty_limit wrapper for writeback probe
 482
 483 2013-03-29 LTTng modules 2.2.0-rc1
 484         * Update README
 485         * Fix: vmscan instrumentation build
 486         * writeback instrumentation: remove duplicated structures
 487         * block: update instrumentation to 3.9 rc kernel
 488         * rcu: update to 3.9 rc kernel instrumentation
 489         * workqueue instrumentation: remove duplicated structures
 490         * Rename odd event names
 491         * Introduce API to remap event names exposed by LTTng
 492         * lttng-module: sched.h: Fix compilation on 3.9 kernel
 493         * Fix Linux 3.8 btrfs probe warning
 494         * Fix Linux 3.8 ext4 probe support
 495         * Fix 3.8 kernel support: namespace lttng_is_signed_type()
 496         * Fix: don't flush-final for offset 0 if reader is on sub-buffer
 497         * instrumentation sched: add missing fork pid info
 498         * Fix check in lttng_strlen_user_inatomic
 499         * instrumentation: sync with Linux commit a1ce392
 500         * Fix: statedump: missing locking, use lttng_iterate_fd
 501         * Implement lttng_iterate_fd wrapper
 502         * Instrumentation cleanup: kmem events should print hex pointers
 503         * Fix compilation of ext4 and btrfs tracepoints on 2.6.40 kernels
 504         * Fix: statedump hang/too early completion due to logic error
 505         * Fix: statedump hang due to incorrect wait/wakeup use
 506         * put_ulong calls in lib_ring_buffer_compat_ioctl() should be compat
 507         * wrapper/perf.h: Fix kernel version condition
 508         * Add new kernel probes instrumentation
 509         * Update kernel probes to more detailed match to kernel versions
 510         * Fix possible kernel build errors with linux-patches
 511         * Add missing MIT license text to 3 files under this license
 512         * Update sites using kernel version checking macro to new range
 513         * Make upper bound of kernel version checking macro exclusive
 514         * sock instrumentation: fix fields to get referenced values
 515         * ext3 instrumentation: fix of assignment code conversion
 516         * sched instrumentation: rename "pid" fields in sched_process_exec
 517         * Remove remaining semicolons in TP_fast_assign blocks
 518         * Fix compilation for 3.0 kernels that are named 2.6.40
 519         * Fix compilation for 3.0 branch (>= 3.0.39)
 520         * Add kernel version checking macro
 521         * Remove semicolons in TP_fast_assign blocks
 522         * Add ifdefs to net probe to support Linux 2.6.39
 523         * Add kernel probes for supplementary subsystems
 524         * Check if interrupt action name is not null in statedump
 525         * Fix exec instrumentation: only for kernels 3.4.0 and higher
 526         * Add TRACE_EVENT(sched_process_exec) to sched.h
 527         * lib/ringbuffer/frontend_api.h: Include linux/prefetch.h.
 528         * Fix warning with 3.6.0 kernel
 529         * ABI with support for compat 32/64 bits
 530         * Perform calculation on bit size in 64-bit
 531         * Use uint64_t for packet header content size and packet size
 532         * Fix: compat layer only on supported architectures
 533         * Fix ring buffer 32/64 bits compat
 534         * Fix cleanup: move lttng-tracer-core.h include to lib ringbuffer config.h
 535         * Fix ring_buffer_frontend.c: missing include lttng-tracer-core.h
 536         * Fix: statedump missing check for NULL namespace
 537
 538 2012-09-10 LTTng modules 2.1.0-rc1
 539         * fix timestamps on architectures without CONFIG_KTIME_SCALAR
 540         * Support for linux kernels 2.6.32 through 2.6.37
 541         * Document limitation of vppid and ppid context wrt eventual RCU instrumentation
 542         * Cleanup: no need to hold RCU read-side lock when reading current nsproxy
 543         * Add env hostname information
 544         * Fix: lttng_statedump_process_state for each PID NS has infinite loop
 545         * lttng_statedump_process_state for each PID NS
 546         * Support the hostname context
 547         * Fix: statedump namespaced pid, tid and ppid
 548         * Fix: statedump: disable vm maps enumeration
 549         * Fix: ensure userspace accesses are done with _inatomic
 550         * Fix: vppid context should test for current nsproxy
 551         * Add MIPS system call support
 552         * Change mode of lttng-syscalls-generate-headers.sh to 755
 553         * cleanup: fix typo in syscall instrumentation header
 554         * Cleanup: remove trailing whitespace in README
 555         * trace event: introduce TP_MODULE_NOAUTOLOAD and TP_MODULE_NOINIT
 556         * LTTng: probe-statedump: add #include <linux/sched.h>
 557         * fix: signal_generate event should print utf8 for comm field
 558         * Makes write operation a parameter for tp_memcpy macro
 559         * Add coding style document
 560         * Update instrumentation/events README file
 561         * Add makefile target for preprocessor
 562         * Fix: free_event_id check should compare unsigned int with -1U
 563         * Use unsigned long type for events discarded counter
 564         * Fix: update signal instrumentation for 3.4 kernel
 565         * LTTng Modules ARM syscall instrumentation
 566         * Fix: generate header missing echo -e for escape chars
 567         * Fix: add missing uaccess.h include (for ARM)
 568         * README: Document that CONFIG_MODULES is required
 569         * Fix: README typo
 570         * Fix: document required and optional kernel config options in README
 571
 572 2012-03-29 LTTng modules 2.0.1
 573         * Fix: is_compat_task !CONFIG_COMPAT compile error on kernels >= 3.3
 574
 575 2012-03-20 LTTng modules 2.0.0
 576         * First STABLE version
 577         * Add version name
 578
 579 2012-03-20 LTTng modules 2.0.0-rc4
 580         * Update README and add version name place-holder
 581
 582 2012-03-16 LTTng modules 2.0.0-rc3
 583         * Fix clock offset 32-bit multiplication overflow
 584         * Fix : wrong assign of fd in state dump
 585         * License cleanup, ifdef namespace cleanup
 586         * Fix: ensure power of 2 check handles 64-bit size_t entirely
 587
 588 2012-03-02 LTTng modules 2.0.0-rc2
 589         * Fix: dmesg printout should not print metadata warnings
 590         * Fix: use transport name as channel name
 591         * Fix: Return -EINVAL instead of print warning if non power of 2 size/num_subbuf
 592
 593 2012-02-20 LTTng modules 2.0.0-rc1
 594         * Standardize version across toolchain
 595         * statedump: Use old macro name for kernel 2.6.38
 596
 597 2012-02-16 LTTng modules 2.0-pre15
 598         * Add timer instrumentation
 599         * fix: need to undef mainline define
 600         * fix: Include signal.h instead of irq.h for prototype match check
 601         * Add signal instrumentation
 602
 603 2012-02-16 LTTng modules 2.0-pre14
 604         * syscall tracing: sys_getcpu
 605         * Add sys_clone x86 instrumentation
 606         * statedump: fix include circular dep
 607         * Implement state dump
 608
 609 2012-02-09 LTTng modules 2.0-pre13
 610         * Update README
 611         * environment: write sysname, release, version, domain to metadata
 612         * Allow open /proc/lttng for read & write
 613
 614 2012-02-02 LTTng modules 2.0-pre12
 615         * Add x86 32/64 execve syscall instrumentation override
 616         * Remove unused defines
 617         * Add padding to ABI
 618         * Use LTTNG_KERNEL_SYM_NAME_LEN
 619         * Update version to 1.9.9
 620         * Add missing double-quotes to clock uuid
 621         * clock: read bootid as clock monotonic ID
 622         * Fix comment
 623         * Cleanup comment
 624         * clock: output clock description in metadata
 625         * Properly fix the timekeeping overflow detection
 626         * Fix init bug
 627         * rename lib-ring-buffer to lttng-lib-ring-buffer
 628         * Remove #warning
 629         * Mass rename: ltt_*/ltt-* to LTTNG_*/LTTNG-*
 630         * Update TODO
 631         * Update TODO
 632         * Remove debugfs file (keep only proc file)
 633         * Rename lttng-debugfs-abi files to lttng-abi
 634
 635 2011-12-13 LTTng modules 2.0-pre11
 636         * Fix OOPS caused by reference of config pointer
 637         * Gather detailed info from x86 64 32-bit compat syscall instrumentation
 638         * lttng lib: ring buffer move null pointer check to open
 639         * lttng lib: ring buffer remove duplicate null pointer
 640         * lttng lib: ring buffer: remove stale null-pointer
 641         * lttng wrapper: add missing include to kallsyms wrapper
 642         * lttng: cleanup one-bit signed bitfields
 643         * Add TODO file
 644         * Update symbol name length max size to 256
 645         * Fix last modifications to string_from_user operations
 646         * Document that depmod needs to be executed by hand
 647         * Fix strlen_user fault space reservation
 648         * Fix tp_copy_string_from_user handling of faults
 649         * Disable block layer tracing support for kernels < 2.6.38
 650         * lttng context: perf counter, fix 32-bit vs 64-bit field size bug
 651         * Update trace clock warning to match the current development plan
 652         * ringbuffer: make ring buffer printk less verbose
 653         * Makefile: do not run depmod manually
 654
 655 2011-09-30 LTTng modules 2.0-pre10
 656         * x86-32: override sys_mmap syscall instrumentation
 657         * Fix cast warning
 658
 659 2011-09-29 LTTng modules 2.0-pre9
 660         * x86 32 syscalls: fix !CONFIG_UID16
 661         * Use __string_from_user
 662         * Add __string_from_user
 663         * Rename "comm" context to "procname"
 664         * Fetch "type" name field for mount syscall
 665         * Create common override file for all architectures
 666         * Shrink stack size usage
 667         * Cleanup: remove unused lttng-compat-syscalls.c file
 668         * Support detailed compat syscalls on x86_64
 669         * Fix syscall table
 670         * Add disabled compat syscalls detail (work in progress)
 671         * Add config compat support for detailed x86_32 syscalls
 672         * Handle newer 3.1+ perf API
 673         * Add dummy x86-32 override headers
 674         * Bind x86-32 syscall headers
 675         * Add x86-32 syscall headers
 676         * Add check for KALLSYMS_ALL in syscall extraction script
 677         * Automate string extraction for syscalls
 678         * Automate syscall filename/pathname extraction
 679         * Add exit to ring_buffer_frontend so module is unloadable
 680         * Add sys_open filename (x86_64)
 681         * Add missing memcpy callback
 682         * copy_from_user and memset
 683         * Add missing alignment after header write
 684         * lib ring buffer: add frontend init as module_init
 685         * lib ring buffer frontend: add missing lock initialization
 686         * ARM: Set bit 0 for thumb mode in kallsyms_lookup_name returned address (missing file)
 687         * ARM: Set bit 0 for thumb mode in kallsyms_lookup_name returned address
 688         * Create override for sys_mmap
 689         * Rename syscalls -> syscall in LTTng ABI
 690         * Use different event name for compat syscalls
 691         * Allow trace syscall table override
 692         * Add dummy override files
 693         * syscall detail: add override capability
 694         * Add pointer pretty-print heuristics
 695         * Add __field_hex
 696         * Rename sys exit errno into ret
 697         * Enable detailed syscalls only for native x86_64
 698         * Use "unknown" for compat syscalls
 699         * Disable x86-64 specific detailed syscalls for now, until we deal with 32-bit compat
 700         * Fix syscall exit
 701         * Fix sys exit
 702         * Only enable detailed syscalls for x86_64 for now
 703         * Merge unknown syscall method with extended detail method
 704         * Add underscore prefix before event names
 705         * Add syscalls pointers detailed syscall tracing
 706         * Use perl for regexp
 707         * Support generation of syscall probes for those with pointers
 708         * Support detailed syscalls with 0 arguments
 709         * detailed syscall tracing (work in progress)
 710         * Expose /proc/lttng file
 711         * Implement detailed syscall event probe
 712         * Disable perf build for < 2.6.33 kernels
 713         * Syscall detail mode: generate syscall table
 714         * block instrumentation: write cmd as hex sequence
 715         * lttng-events TRACE_EVENT generator cleanup
 716         * block layer instrumentation: fix cmd field
 717         * Remove 0 args syscalls for now from type-aware syscall cb generator
 718         * Generate trace syscall table macros
 719         * Put syscall tracing without arg types back in place
 720         * Detailed system call tracing (TRACE_EVENT() generation for integer support)
 721         * lttng events probes: don't clash with "ctx" variable name
 722         * lib ring buffer must take private pointer copy before decrementing refcount
 723
 724 2011-08-16 LTTng modules 2.0-pre8
 725         * Fix metadata buffer wait/wakeup
 726
 727 2011-08-12 LTTng modules 2.0-pre7
 728         * Add missing module refcount to lttng_tracepoint_list_fops
 729         * Add license info about lib/ringbuffer/ring_buffer_mmap.c being GPLv2