ChangeLog

   1 2017-10-03 (National Techies Day) LTTng modules 2.9.4
   2         * Fix: version check error in btrfs instrumentation
   3         * Fix: update btrfs instrumentation for kernel 4.14
   4         * Fix: update writeback instrumentation for kernel 4.14
   5         * Fix: update block instrumentation for kernel 4.14
   6         * Fix: vmalloc wrapper on kernel < 2.6.38
   7         * Fix: vmalloc wrapper on kernel >= 4.12
   8         * Add kmalloc failover to vmalloc
   9         * Fix: mmap: caches aliased on virtual addresses
  10         * Fix: update ext4 instrumentation for kernel 4.13
  11         * Fix: Sleeping function called from invalid context
  12         * Fix: sched for v4.11.5-rt1
  13         * Fix: handle missing ftrace header on v4.12
  14
  15 2017-06-12 (National Peanut Butter Cookie Day) LTTng modules 2.9.3
  16         * Fix: pid tracker should track "pgid"
  17         * Fix: Build ftrace probe on kernels prior to 4.12
  18         * Fix: update ftrace probe for kernel 4.12
  19         * Fix: update block instrumentation for kernel 4.12
  20         * Fix: Add support for 4.9.27-rt18 kernel
  21         * Fix: update btrfs instrumentation for kernel 4.12
  22         * Fix: update ringbuffer for kernel 4.12
  23         * Fix: update sched instrumentation for kernel 4.12
  24         * Fix: ext3 was completely removed from the kernel in v4.3
  25         * Fix: NULL pointer dereference of THIS_MODULE with built-in modules
  26         * Fix: add "flush empty" ioctl for stream intersection
  27         * Revert "Fix: flush empty packets on snapshot channel"
  28         * Revert "Fix: don't perform extra flush on metadata channel"
  29         * Fix: remove CONFIG_KALLSYMS_ALL warning on clean
  30
  31 2017-04-25 (National Zucchini Bread Day) LTTng modules 2.9.2
  32         * Fix: Always build vmscan probe
  33         * Fix: use of uninitialized ret value in lttng_abi_open_metadata_stream
  34         * Fix: kref changes for kernel 4.11
  35         * Fix: atomic_add_unless() returns true/false rather than prior value
  36         * Fix: timers cputime_t arguments replaced by ull in kernel 4.11
  37         * Fix: update scsi instrumentation for kernel 4.11
  38         * Fix: changes to the vm_op fault cb prototype in libringbuffer
  39         * Fix: update btrfs instrumentation for kernel 4.11
  40         * Fix: update mm_vmscan instrumentation for kernel 4.11
  41         * Fix: section mismatch warning caused by __exit annotation
  42
  43 2017-02-17 (National Cabbage Day) LTTng modules 2.9.1
  44         * Fix: nmi-safe clock on 32-bit systems
  45         * Fix: only include linux/cpuhotplug.h for kernels >= 4.10
  46         * Fix: 4.10 hotplug adaptation backward compat
  47         * Adapt lttng-modules to Linux 4.10 cpu hotplug state machine
  48         * Fix: 4.10 btrfs instrumentation update backward compat
  49         * Update btrfs instrumentation for 4.10 kernel
  50         * btrfs instrumentation: update to 4.10 kernel
  51         * timer instrumentation: adapt to ktime_t without union
  52         * Fix: asoc instrumentation for RHEL 7.3
  53         * Fix: SCSI instrumentation for SLES12 SP2
  54         * Add SUSE Linux Enterprise kernel version tests
  55
  56 2016-11-29 (National Square Dance Day) LTTng modules 2.9.0
  57         * Performance: add missing unlikely in reserve
  58         * Fix: preemptible and migratable context error handling
  59
  60 2016-10-13 (International Day for Failure) LTTng modules 2.9.0-rc2
  61         * Fix: bump stable kernel version ranges for clock work-around
  62
  63 2016-10-07 (National Frappé Day) LTTng modules 2.9.0-rc1
  64         * Fix: i2c: support kernels < 3.15
  65         * Fix: show warning for broken clock work-around
  66         * Bump minor ABI version
  67         * Fix: work-around upstream Linux timekeeping bug
  68         * Add support for i2c tracepoints
  69         * Cleanup: makefile version checks with single "ge"
  70         * Performance: special-case NULL in lttng_strlen_user_inatomic
  71         * Fix: lttng_inline_memcpy does not take a __user argument
  72         * Performance: implement lttng_inline_memcpy
  73         * Performance: cache the backend pages pointer in context
  74         * Cleanup: libringbuffer: remove duplicate pointer chasing in slow paths
  75         * Performance: Only dereference commit index once
  76         * Performance: Mark channel and buffer event disabled check unlikely
  77         * Performance: Relax atomicity constraints for crash handling
  78         * Performance: mark ring buffer do_copy callers always inline
  79         * Performance: mark lib_ring_buffer_write always inline
  80         * Kconfig: select TRACEPOINTS when built-in
  81         * Performance: disable event counting by default
  82         * Fix: handle large number of pages or subbuffers per buffer
  83         * Fix: unregister cpu hotplug notifier on buffer alloc error
  84         * Fix: sa_family is of type unsigned short
  85         * Fix: check for sizeof sa_family to save sa_family in accept and connect
  86         * Fix: use printk_once() for wrapper warning messages
  87         * Fix: btrfs instrumentation for 4.8 kernel
  88         * Fix: update mm_vmscan instrumentation for kernel 4.8
  89         * Fix: napi instrumentation for 4.8 kernels
  90         * Fix: update block instrumentation to compile on 4.8 kernels
  91         * Cleanup: reuse code in accept() and accept4() instrumentation
  92         * Add x86-64 override for accept4 syscall
  93         * Fix: timer wrapper: support kernels >= 4.8
  94         * Performance: split check deliver fast/slow paths
  95         * Fix: x86-64 accept instrumentation
  96         * Fix: Add support for 4.6.4-rt8 kernel
  97         * Fix: update scsi instrumentation for 4.7+ kernels
  98         * Fix: Use fs_initcall instead of rootfs_initcall
  99         * Fix: Add kernel configuration for lttng clock plugin
 100         * Fix: the clock plugin must be initiated before first use of the clock
 101         * Fix: tests/Kbuild for older kernels
 102         * Cleanup: __dynamic_len_idx set but not used warning
 103         * Cleanup: coding style and comments of net.h
 104         * net: Add TCP header data to net_* tracepoints
 105         * net: Add IPv4/IPv6 header data to net_* tracepoints
 106         * Fix: endianness for the container type of enum
 107         * enumeration autoincrement: use if/else logic
 108         * Cleanup trailing whitespaces
 109         * lttng-test probe: test ctf_enum_auto()
 110         * Add ctf_enum_auto() for autoincrementing enumeration values
 111         * Implement session statedump command
 112         * Fix: annotate bytecode interpreter for kernel stack validator
 113         * Update version to 2.9.0-pre
 114         * Fix: ring buffer: honor switch parameter type in remote switch
 115         * Fix: only flush non-metadata channels
 116         * Fix: don't perform extra flush on metadata channel
 117         * select, poll and epoll_wait overrides on ARM 32-bit
 118         * Fix: flush empty packets on snapshot channel
 119         * Fix: do not generate packet at destroy after stop
 120         * Fix: compat ioctl for flush/get metadata version
 121         * Fix: ctf_string() should handle NULL pointers
 122         * Fix: portability: no arith on void pointer
 123         * Fix: add missing tests/Kbuild
 124         * Test clock override plugin
 125         * Fix: add modules target to base Makefile
 126         * Fix: make clean does not include dot-config
 127         * Fix: trigger build error if CONFIG_TRACEPOINTS is not set
 128         * Documentation: document that CONFIG_MODULES not required when builtin
 129         * Fix: add missing errno include in random wrapper
 130         * Fix: mm_page_alloc_extfrag instrumentation for kernel 3.16.35
 131         * Fix: copy_from_user size when limited allocation
 132         * Extract the payload of epoll_wait/epoll_pwait
 133         * Extract the payload for epoll_ctl
 134         * Extract the FDs and flags from poll and ppoll
 135         * Extract the FD sets in select and pselect6
 136         * Add ctf_integer_bitfield_type
 137         * Implement enumeration type
 138         * Implement custom field support
 139         * Implement variant type
 140         * Implement shadow stack for dynamic len
 141         * libringbuffer: implement event too big API
 142         * Implement structure, compound array/sequence types
 143         * Fix: integer endianness metadata generation
 144         * Fix: endianness of integers received by filter
 145         * Fix: writeback probe on RHEL >= 3.10.0-327.10.1
 146         * Fix: RHEL kernel 3.10.0-327.13.1 compat
 147         * Fix: ctf_user_integer should not trigger page fault
 148         * Fix: lib_ring_buffer_copy_from_user_inatomic error handling
 149         * Add comment describing ioctl number duplication
 150         * Fix: remove unused gfpflags.h from btrfs and compaction instrumentation
 151         * Fix: Remove dead code from filter interpreter
 152         * Fix: x86 kvm mmutrace instrumentation for kernel < 3.6
 153         * Fix: mm_vmscan instrumentation: remove unused gfpflags.h include
 154         * Fix: use of uninitialized ret value in lttng_abi_create_event
 155         * Fix: kmem instrumentation: remove unused gfpflags.h include
 156         * Fix: 4.6 kernel: use in_compat_syscall
 157         * Fix: use BUG_ON instead of accessing array subscript above array bounds
 158         * Fix: Add granularity to RHEL kernel version checks
 159
 160 2016-03-18 (Awkward Moments Day) LTTng modules 2.8.0-rc1
 161         * Bump minor tracer ABI version
 162         * Fix: build against out-of-tree kernel build
 163         * probes/Kbuild: remove upper level header path
 164         * Move leftover relative include paths to system paths
 165         * syscall instrumentation: use system headers
 166         * tracepoint event instrumentation: use system headers
 167         * Use system include path in wrappers
 168         * libs: use system include paths
 169         * Use system header paths in core implementation files
 170         * Use system include paths in root directory headers
 171         * Use system include paths in probes
 172         * Update gitignore
 173         * Use system include paths in lttng-types.h
 174         * Use system include paths in lttng-tracepoint-event-impl.h
 175         * Use system include path in probes/define_trace.h
 176         * Use system include paths in probes/lttng-tracepoint-event-impl.h
 177         * Rename probes/lttng-events.h to probes/lttng-tracepoint-event-impl.h
 178         * Add makefile directory to include path
 179         * Fix: event ctx get size should be after chan ctx
 180         * Fix: filter interpreter with userspace strings
 181         * Fix: rename kvm x86 TRACE_SYSTEM to avoid name clash
 182         * Fix: format address fields as hexadecimal
 183         * PowerPC-64 ABIv1: add build error if KALLSYMS_ALL is missing
 184         * Fix: system call instrumentation overrides
 185         * Fix: page_alloc wrapper incorrect parenthesis
 186         * Fix: system call tracing for arm-64 compat !CONFIG_UID16
 187         * Fix: add struct user_msghdr forward declaration for older kernels
 188         * Cleanup: Remove unused lttng-types module
 189         * Fix: add missing versions and init call for page_alloc wrapper
 190         * Fix: Define lttng-tracer metadata only once
 191         * Fix: Add CONFIG_LTTNG to modules_install target
 192         * Fix: Use kbuild env instead of a custom var KERNELDIR
 193         * Update clock offset comment
 194         * clock offset: print negative value in metadata
 195         * Fix: handle negative clock offset
 196         * Fix: sched instrumentation for 4.1-rt11
 197         * Add RT patch version macros
 198         * Expect filter context identifiers starting with $ctx.
 199         * ARM64: wire up compat system calls
 200         * Add support for arm64 syscalls
 201         * Fix: Ubuntu kernel range for block_rq_complete
 202         * Fix: Ubuntu kernel range for mm_page_alloc_extfrag
 203         * Fix: update vmscan instrumentation for kernel 4.5
 204         * Fix: check reference counts for overflow
 205         * Fix: RHEL 7.2 scsi instrumentation
 206         * Fix: RHEL 7.2 kvm instrumentation
 207         * Kconfig: describe both module and in-kernel compilation options
 208         * Add comments and indentation to Makefile
 209         * Add support for built-in kernel build
 210         * Rename sub makefiles to Kbuild
 211         * Cleanup sub makefiles
 212         * Make goals configurable with CONFIG_LTTNG
 213         * Fix: Use generic raw_irqs_disabled_flags
 214         * Fix: Use MAX_RT_PRIO offset in sched_wakeup_template
 215         * Fix: update sched instrumentation for kernel 4.4.0
 216         * Bump version number for development branch
 217         * Fix: interruptible context: reversed logic
 218         * Contexts for RT debugging
 219         * Fix: instrumentation: v4lv2 missing include
 220         * Fix: header size larger than 256 bytes
 221         * Instrument x86 page faults
 222         * Fix: irq_vectors TRACE_SYSTEM name
 223         * Instrument x86_irq_vectors
 224         * Fix: tracepoint listing misses last loaded probe
 225         * Fix: lttng trace-clock needs to disable preemption
 226         * Tracepoint event: add "TP_code_post()"
 227         * Implement array and sequence bitfields
 228         * Fix: kmem: add mm.h include
 229         * Add page frame number (pfn) to kmem page events
 230         * Use pfn rather than struct page in ring buffer array
 231         * Implement clock plugin support
 232         * Command to regenerate the metadata of a session
 233         * Fix: writeback instrumentation update for 4.3 Linux kernel
 234         * Fix: update sched wakeup instrumentation for 4.3 kernel
 235         * Fix: lttng-test build failure for kernels < 3.0
 236         * Use 3.18 syscall instrumentation for MIPS32
 237         * Update the MIPS32 syscall instrumentation to 3.18
 238         * Fix: Move pipe override to the arch specific pointers_override.h
 239         * Implement lttng test module
 240         * Cleanup: remove logically dead code
 241         * Fix: filter validator use after free
 242         * Fix: use after free in channel release
 243         * Fix: non-enabler events should be disabled by default
 244         * Fix: build failure on 2.6.36
 245         * Cleanup: split bdi_dirty_ratelimit with ifdef into separate macros
 246         * Fix: writeback instrumentation for 4.2 kernels
 247         * Fix: mm_page_alloc_extfrag instrumentation for kernel 3.18.10
 248         * Add stream instance id to the packet header
 249         * Add a packet sequence number
 250         * Fix: kmem probe with Ubuntu 3.13 kernels
 251         * Fix: disable kvm probe if lapic.h isn't found
 252         * Fix: timer instrumentation for 4.2 kernels
 253         * Fix: ext4 instrumentation for 4.2 kernels
 254         * Fix: kvm instrumentation for 4.2 kernels
 255         * Fix: allow LTTng to be built within kernel tree
 256
 257 2015-07-15 (Pet Fire Safety Day) LTTng modules 2.7.0-rc1
 258         * Fix: Building the event list fails on fragmented memory
 259         * Fix: use after free on metadata cache reallocation
 260         * Fix: version checks for kernel 4.0
 261         * Fix: Incorrect Ubuntu kernel patchlevel
 262         * Fix: cpu-id context should use int type
 263         * Implement cpu-id context
 264         * Implement cpu_id context for filtering
 265         * Fix: context printk mismatch on error
 266         * Cleanup: misleading comment about deferrable timer
 267         * Fix: arm-32 build
 268         * Fix: Update kmem event for Ubuntu's 3.16 kernel
 269         * Fix: RHEL 7.1 block instrumentation
 270         * Fix: add RHEL version macros
 271         * Fix: add missing parenthesis in ubuntu version check
 272         * Fix: remove regmap instrumentation for kernels < 4.1
 273         * Fix: Update kmem event for recent Ubuntu kernel
 274         * Fix: missing statedump end event when block device listing available
 275         * Fix: don't generate incorrect macros for debian/ubuntu version check
 276         * Revert "Fix: build against Ubuntu kernels"
 277         * Fix: build against Ubuntu kernels
 278         * Add namespace info in sched_fork and statedump
 279         * Fix: ext4 instrumentation: flags parameter did not exist prior to 3.11
 280         * Fix: printk instrumentation: remove "condition" tracepoints
 281         * Fix: regmap build against kernel 4.0 kernel headers
 282         * Add mmu_valid_gen field to mmutrace events
 283         * Fix: add missing x86 mmutrace kernel header include
 284         * Fix: x86 mmutrace event extra field for kernels >= 3.11
 285         * Fix: remove execute flag from kvm.h file
 286         * Fix: build x86 kvm probes on kernels >= 4.1-rc1
 287         * Fix: compilation on 4.1-rc1 kernel, remove unused WB_WORK_REASON
 288         * Fix: 4.1-rc1 Linux build and regmap instrumentation
 289         * Fix: don't clash with older Debian kernel versions
 290         * Fix: update get_pfnblock_flags_mask wrapper for debian kernels
 291         * Fix: discover Debian API
 292         * Fix: Update README.md to match reality: kernels >= 2.6.36 are supported
 293         * Fix: atomic.h wrapper for kernels < 2.6.37
 294         * Fix: disable x86 kvm instrumentation for kernels < 2.6.38
 295         * Fix: add missing types.h include for older kernels
 296         * Fix: add hlist lttng wrappers
 297         * Fix: add struct file_handle forward declaration
 298         * Fix: string length calculation reversed user vs kernel args
 299         * Fix: use lttng_rcu_dereference within lttng-syscalls.c
 300         * Fix: add lttng rcu wrapper to allow tracing RCU
 301         * Fix: double-unlock of session mutex
 302         * Fix: check that class and instance prototype match
 303         * Fix: lttng-events.h check function takes void
 304         * Fix: regmap instrumentation for Linux 3.19.4 and 4.0
 305         * Fix: kernels >= 2.6.33 put utsrelease.h in generated/
 306         * Fix: Include utsrelease.h in lttng-kernel-version.h
 307         * Fix: ext4 ext4_da_write_pages instrumentation for kernels < 3.11.0
 308         * Fix: old kernels need module.h included before vermagic.h
 309         * Fix: net instrumentation for kernels 2.6.39 and below
 310         * Fix: version condition in makefile
 311         * Implement wrapper around get_pfnblock_flags_mask
 312         * Be more restrictive in provider name check
 313         * Fix: net instrumentation namespacing
 314         * Fix: compaction instrumentation namespacing
 315         * Fix: Support 4.x kernel versions in Makefile
 316         * Fix: remove stale TP_STRUCT_entry from kvm instrumentation
 317         * Fix: add missing module.h include to lttng-probe-user.c
 318         * Fix: use lttng hlist wrapper in wildcard and filter
 319         * Fix: namespace asoc and kmem instrumentation
 320         * Fix: update instrumentation after wildcard rebase
 321         * Fix: lttng_abi_syscall_list does not need to be exported
 322         * Migrate ARM, powerpc, MIPS syscall instrumentation to TP_FIELDS
 323         * Remove now unused syscalls.h from lttng-modules
 324         * Filter: start with enabler "disabled"
 325         * Fix coverity warning about sizeof(void **) != sizeof(void *)
 326         * Fix length type and text sequence base
 327         * Fix: TP_FIELDS: add missing headers
 328         * Migrate syscall instrumentation to TP_FIELDS
 329         * Migrate tracepoint instrumentation to TP_FIELDS
 330         * Implement filtering infrastructure
 331         * syscall wildcards: apply syscall filtering
 332         * Implement syscall wildcard support
 333         * Implement tracepoint wildcard support
 334         * Namespace all tracepoints
 335         * Implement list.h wrapper for hlist in older kernels
 336         * Implement listing of pid tracker content
 337         * Implement PID tracking
 338         * Fix: mm_page_alloc_extfrag instrumentation for kernel 3.14.36
 339         * Fix: update writeback instrumentation for kernel 4.0+
 340         * Fix: compaction mm_compaction_isolate_template update for Linux 4.0+
 341         * Fix: kmem instrumentation update for mm_page_alloc_extfrag kernel 3.19.2+
 342         * Fix: kmem instrumentation: mm_page_alloc extfrag change_ownership field
 343         * Fix: missing parenthesis in offset_align_floor
 344         * Fix: implement time.h wrapper for FD_ISSET
 345         * Fix: update sched instrumentation for 3.19+ kernels
 346         * Fix: update rcu instrumentation for 3.19+ kernels
 347         * Fix: update scsi instrumentation for 3.19+ kernels
 348         * Fix: update module instrumentation for 3.19+ kernels
 349         * Fix: Add f_dentry wrapper for 3.19+ kernels
 350         * Fix: introduce lttng_get_unused_fd() wrapper for 3.19 kernels
 351         * Fix: lttng_this_cpu_ptr wrapper for kernel 3.19+
 352         * Fix: Update btrfs instrumentation for 3.18 Linux kernel
 353         * Fix compile error on kernel 3.0.101 with CONFIG_PERF_EVENTS
 354         * Conditional compilation introduced by lttng-modules commit
 355         * Fix: compaction instrumentation update for 3.14.x stable kernels
 356         * Fix: context alignment not properly handled
 357         * Fix compilation on Linux kernel >= 3.18.0
 358         * Fix: build for architectures without HAVE_SYSCALL_TRACEPOINTS
 359
 360 2014-10-20 LTTng modules 2.6.0-rc1
 361         * Expose lttng-modules ABI version ioctl
 362         * Fix: syscall list ioctl number conflict
 363         * lttng-modules: fix build for non-x86
 364         * Fix: syscall listing of session
 365         * Print build warning when writeback probe is disabled
 366         * Add atomic.h wrapper for before/after atomic
 367         * Fix compilation on Ubuntu 14.10
 368         * Fix: export name as text array in writeback
 369         * Cleanup: remove unused trace_clock_read32()
 370         * Use 3.17 ktime_get_mono_fast_ns() new API
 371         * Check for stale version.h files
 372         * Fix: compile lttng_statedump_process_ns on Ubuntu
 373         * Reverse version check logic in lttng_statedump_process_ns
 374         * Fix block_rq_complete TP on Ubuntu kernel
 375         * Introduce macros to check Ubuntu kernel version
 376         * Sync writeback tracepoints from mainline
 377         * Fix: redefinition of DEFINE_WRITEBACK_EVENT
 378         * Fix: hander negative get_syscall_nr return value
 379         * Fix: statedump: close_on_exec flag backward compat
 380         * Fix instrumentation of vmscan for older kernels
 381         * Fix: older kernels (3.2.x) don't undefine TRACE_SYSTEM
 382         * Fix: syscall listing: handle "enable all syscall"
 383         * Fix: don't allow disabling syscalls when none are enabled
 384         * Fix: syscall: fail disable all if all already disabled
 385         * Fix: syscall filtering: NULL pointer deref
 386         * Cleanup: list syscall without syscall_entry prefix
 387         * Fix: syscall_list_show NULL pointer deref
 388         * implement syscall mask getter
 389         * Cleanup: lttng-abi.h coding style
 390         * syscall listing: show syscall ID
 391         * Allow events with same name to be enabled for each channel
 392         * ABI: use enable a syscall ABI field name
 393         * Implement syscall listing
 394         * Fix: tracepoint list anonymous file name
 395         * Fix: syscall filtering: disable all syscalls
 396         * syscall tracing: input/output parameter handling for all arch
 397         * lttng-get-syscall-inout.sh depends on bash
 398         * Fix generate syscall header script: add missing escape char
 399         * syscall instrumentation: handle copy_from_user return value
 400         * Rename LTTng syscall instrumentation macros
 401         * Rename LTTng instrumentation macros
 402         * Extract input/output arguments from accept and connect syscalls
 403         * syscall: extract pipe and pipe2 output args
 404         * Remove sys_ prefix from syscall names
 405         * System call inout/output arg processing
 406         * Update syscall inout table
 407         * Add syscall inout table
 408         * Extract syscall exit ret value on x86 32/64
 409         * Extract system call exit return value
 410         * Syscall filtering: apply to syscall exit
 411         * System call filtering
 412         * asoc.h: fix build with v3.17 kernel
 413         * Fix: lttng-modules teardown NULL pointer OOPS
 414         * Fix: handle concurrent flush vs get_next_subbuf on metadata cache
 415         * Modernize README using Markdown
 416         * Fix: OOT lttng_logger tracepoint not visible with signed kernels
 417         * Add cscope to gitignore
 418         * Update kvm instrumentation: compile on 3.17-rc1
 419         * Update statedump to 3.17 nsproxy locking
 420         * Fix: noargs probes should calculate alignment and event length
 421         * Update compaction instrumentation to 3.16 kernel
 422         * Update vmscan instrumentation to 3.16 kernel
 423
 424 2014-07-16 (Take Your Poet to Work Day) LTTng modules 2.5.0
 425         * (no change)
 426
 427 2014-06-27 LTTng modules 2.5.0-rc2
 428         * Fix: statedump: check whether "files" is NULL, RCU semantic fix
 429         * Fix: statedump handle oom case, handle errors
 430         * Fix: correct typo in kernel version number
 431         * Fix: blktrace instrumentation for backported branches
 432         * Fix: statedump block devices OOPS
 433
 434 2014-05-28 (International Hamburger Day) LTTng modules 2.5.0-rc1
 435         * Add TID field to some block_* events
 436         * Fix: refuse overwrite mode buffers with less than two subbuffers
 437         * Fix: lttng modules system call generation script
 438         * Dump FD flags and mode on state dump
 439         * Fix: incorrect rwbs field type in block_bio_queue
 440         * Fix: blktrace instrumentation for v3.2.58+ stable branch
 441         * Fix: pass proper args when writing commit counter
 442         * Cleanup: lib ringbuffer: pagecpy has unsigned semantic
 443         * Fix: allow racy tracepoint string input from kernel and userspace
 444         * Statedump event for block devices
 445         * Fix: update v4l2 instrumentation to 3.15 kernel
 446         * Fix: ext4 update instrumentation to 3.15 kernel
 447         * Fix: update block instrumentation to 3.15 kernel
 448         * Fix: module instrumentation: update to 3.15 kernel
 449         * Adapt to 3.15 tracepoint API
 450         * Kernel 3.15 don't define map unmap for pipe
 451         * Fix: add missing module version in v4l2 probe
 452         * Add V4L2 instrumentation
 453         * Fix: rcu instrumentation: add const qualifier to char pointers
 454         * Fix: add missing module version information
 455         * Use kernel 3.13 syscall tables for MIPS32
 456         * Add MIPS32 syscalls extracted from a 3.13 kernel
 457         * Fix: block instrumentation: < 3.14 don't have bi_iter
 458         * Fix: update btrfs instrumentation to kernel 3.14
 459         * Fix: update block layer instrumentation to kernel 3.14
 460         * Fix: remove __exit annotation
 461         * Fix file permissions for lttng-statedump-impl.c
 462         * LTTng logger ABI
 463
 464 2014-02-28 (Public Sleeping Day) LTTng modules 2.4.0
 465         * Fix: load state dump even if work-around lookup fails
 466         * Cleanup: fix comment
 467         * Fix: correctly version kvm events to build against v3.0 kernel
 468         * Add extraversion (e.g. -rc4) to lttng-tracer modinfo
 469
 470 2014-02-14 LTTng modules 2.4.0-rc4
 471         * Fix: use after free in ring buffer clients
 472         * Fix: Add statedump exit so module is not permanent
 473         * Cleanup: move callback init to static initialization
 474         * Fix: OOT lttng-statedump tracepoints not visible with signed kernels
 475
 476 2014-01-29 LTTng modules 2.4.0-rc3
 477         * Fix: tracepoint event name mapping at unregister
 478         * Fix: tracepoint name remapping
 479         * Fix: enable event error path memory corruption
 480         * Update kvm instrumentation to Linux 3.13
 481         * Update sched instrumentation to Linux 3.13
 482         * Fix: provide more precise error report for enable event
 483         * Fix: quote event name in metadata
 484         * Add version info to lttng-tracer.ko modinfo
 485
 486 2013-12-10 LTTng modules 2.4.0-rc2
 487         * Fix: client_packet_header() uses wrong packet
 488         * Cleanup: fix typo in ring buffer backend comment
 489         * Fix: handle unknown event type parameter
 490         * Fix: eliminate timestamp overlap between packets
 491         * gcc blacklist: only apply when building with gcc
 492         * Blacklist ARM gcc 4.8.0, 4.8.1, 4.8.2
 493
 494 2013-11-15 LTTng modules 2.4.0-rc1
 495         * Update ext4 instrumentation to Linux 3.12
 496         * Update RCU instrumentation to Linux 3.12
 497         * Update btrfs instrumentation to 3.12 kernel
 498         * Update vmscan instrumentation to Linux 3.12
 499         * update: kmem instrumentation 3.12 kernel support
 500         * lttng-statedump-impl: Use generic hard irqs for Linux >= 3.12
 501         * lttng-statedump-impl: Fix lttng_list_interrupts for empty implementation
 502         * Import fix from LTSI: 3.4+ RT kernels use CONFIG_PREEMPT_RT_FULL
 503         * Add new tracepoint in KVM
 504         * Blacklist kernels 3.10.13 and 3.11.2
 505         * LTTng trace-clock: shrink kernel blacklist
 506         * Metadata flush writes data from the cache
 507         * Per-stream ioctl to get the current timestamp
 508         * LTTng ringbuffer ABI calls for index generation
 509         * Prepare LTTng override of ring buffer fops
 510         * Blacklist Linux kernels 3.10+
 511
 512 2013-09-03 LTTng modules 2.3.0
 513         * Fix: metadata stream should not reference session
 514         * Fix: btrfs: support 3.11 Linux kernel
 515         * statedump: remove KERN_DEBUG messages
 516         * Fix: ext4: add missing tracepoints for 3.11 kernel
 517         * Fix: ext4: Linux 3.11 support
 518         * Fix: ext3: 3.11 Linux support
 519         * Fix: statedump nsproxy 3.11 Linux support
 520
 521 2013-08-30 LTTng modules 2.3.0-rc2
 522         * Fix: metadata lttng channel refcount
 523         * README: lttng-modules incompatible with lttng 0.x patchset
 524
 525 2013-07-17 LTTng modules 2.3.0-rc1
 526         * Fix: kvm x86 probes side-effect
 527         * Fix: allow get/put subbuf in loop for metadata stream
 528         * Add support for kvm x86 specific tracepoints
 529         * Add mainline headers for kvm x86 tracepoints
 530         * Remove old 3.0.4 x86-64 extracted syscall info
 531         * Point the x86-64 overrides to newly extracted 3.10-rc7 files
 532         * Add syscalls extracted files from a 3.10-rc7 kernel
 533         * Improve documentation of the syscall extractor script
 534         * Fix: double length of __dynamic_len array
 535         * Fix printk instrumentation
 536         * Introduce __dynamic_array_enc_ext_2() and tp_memcpy_dyn_2()
 537         * Fix: ring buffer: get_subbuf() checks should be performed on "consumed" parameter
 538         * Fix: SWITCH_FLUSH new sub-buffer checks
 539         * Fix: ring buffer: handle concurrent update in nested buffer wrap around check
 540         * Cleanup: lib_ring_buffer_switch_new_end() only calls subbuffer_set_data_size()
 541         * Revert "Cleanup: ring buffer: remove lib_ring_buffer_switch_new_end()"
 542         * Fix: handle writes of length 0
 543         * Fix: ring buffer: RING_BUFFER_FLUSH ioctl buffer corruption
 544         * Cleanup: ring buffer: remove lib_ring_buffer_switch_new_end()
 545         * print warning and return -EBUSY on double get_subbuf()
 546         * Add header to fix compilation of syscalls-extractor on 3.9 kernel
 547         * Fix: don't do 0 byte event reservation
 548         * Document that payload size need to be greater than 0
 549         * Fix build and load against linux-2.6.33.x
 550         * Fix: add missing CONFIG_COMPAT around lib_ring_buffer_compat_ioctl
 551         * Metadata cache and multiple metadata channels
 552         * fix block instrumentation probe signature mismatch for 3.9.x kernels
 553         * fix: block instrumentation: NULL pointer dereference
 554         * Update rcu instrumentation to 3.9.[0-4]
 555         * Fix CPU hotplug section mismatches
 556         * Add system calls definitions for powerpc-32
 557         * Remove bashism in lttng-syscalls-generate-headers.sh
 558         * Update ARM (32 bit) syscall tracepoints to 3.4
 559
 560 2013-05-09 LTTng modules 2.2.0-rc2
 561         * Remove useless lttng_metadata probe
 562         * Fix: warning kvm_trace_exit_reason redefined for 3.9 kernel
 563         * Fix: 3.9.0 block layer instrumentation build
 564         * Revert "Stop build if CONFIG_TRACEPOINTS is not set"
 565         * Stop build if CONFIG_TRACEPOINTS is not set
 566         * Add comments to endifs.
 567         * Fix: remove ARM set_tls system call override
 568         * Cleanup: arm sys_mmap whitespace
 569         * Clean up using global_dirty_limit wrapper for writeback probe
 570
 571 2013-03-29 LTTng modules 2.2.0-rc1
 572         * Update README
 573         * Fix: vmscan instrumentation build
 574         * writeback instrumentation: remove duplicated structures
 575         * block: update instrumentation to 3.9 rc kernel
 576         * rcu: update to 3.9 rc kernel instrumentation
 577         * workqueue instrumentation: remove duplicated structures
 578         * Rename odd event names
 579         * Introduce API to remap event names exposed by LTTng
 580         * lttng-module: sched.h: Fix compilation on 3.9 kernel
 581         * Fix Linux 3.8 btrfs probe warning
 582         * Fix Linux 3.8 ext4 probe support
 583         * Fix 3.8 kernel support: namespace lttng_is_signed_type()
 584         * Fix: don't flush-final for offset 0 if reader is on sub-buffer
 585         * instrumentation sched: add missing fork pid info
 586         * Fix check in lttng_strlen_user_inatomic
 587         * instrumentation: sync with Linux commit a1ce392
 588         * Fix: statedump: missing locking, use lttng_iterate_fd
 589         * Implement lttng_iterate_fd wrapper
 590         * Instrumentation cleanup: kmem events should print hex pointers
 591         * Fix compilation of ext4 and btrfs tracepoints on 2.6.40 kernels
 592         * Fix: statedump hang/too early completion due to logic error
 593         * Fix: statedump hang due to incorrect wait/wakeup use
 594         * put_ulong calls in lib_ring_buffer_compat_ioctl() should be compat
 595         * wrapper/perf.h: Fix kernel version condition
 596         * Add new kernel probes instrumentation
 597         * Update kernel probes to more detailed match to kernel versions
 598         * Fix possible kernel build errors with linux-patches
 599         * Add missing MIT license text to 3 files under this license
 600         * Update sites using kernel version checking macro to new range
 601         * Make upper bound of kernel version checking macro exclusive
 602         * sock instrumentation: fix fields to get referenced values
 603         * ext3 instrumentation: fix of assignment code conversion
 604         * sched instrumentation: rename "pid" fields in sched_process_exec
 605         * Remove remaining semicolons in TP_fast_assign blocks
 606         * Fix compilation for 3.0 kernels that are named 2.6.40
 607         * Fix compilation for 3.0 branch (>= 3.0.39)
 608         * Add kernel version checking macro
 609         * Remove semicolons in TP_fast_assign blocks
 610         * Add ifdefs to net probe to support Linux 2.6.39
 611         * Add kernel probes for supplementary subsystems
 612         * Check if interrupt action name is not null in statedump
 613         * Fix exec instrumentation: only for kernels 3.4.0 and higher
 614         * Add TRACE_EVENT(sched_process_exec) to sched.h
 615         * lib/ringbuffer/frontend_api.h: Include linux/prefetch.h.
 616         * Fix warning with 3.6.0 kernel
 617         * ABI with support for compat 32/64 bits
 618         * Perform calculation on bit size in 64-bit
 619         * Use uint64_t for packet header content size and packet size
 620         * Fix: compat layer only on supported architectures
 621         * Fix ring buffer 32/64 bits compat
 622         * Fix cleanup: move lttng-tracer-core.h include to lib ringbuffer config.h
 623         * Fix ring_buffer_frontend.c: missing include lttng-tracer-core.h
 624         * Fix: statedump missing check for NULL namespace
 625
 626 2012-09-10 LTTng modules 2.1.0-rc1
 627         * fix timestamps on architectures without CONFIG_KTIME_SCALAR
 628         * Support for linux kernels 2.6.32 through 2.6.37
 629         * Document limitation of vppid and ppid context wrt eventual RCU instrumentation
 630         * Cleanup: no need to hold RCU read-side lock when reading current nsproxy
 631         * Add env hostname information
 632         * Fix: lttng_statedump_process_state for each PID NS has infinite loop
 633         * lttng_statedump_process_state for each PID NS
 634         * Support the hostname context
 635         * Fix: statedump namespaced pid, tid and ppid
 636         * Fix: statedump: disable vm maps enumeration
 637         * Fix: ensure userspace accesses are done with _inatomic
 638         * Fix: vppid context should test for current nsproxy
 639         * Add MIPS system call support
 640         * Change mode of lttng-syscalls-generate-headers.sh to 755
 641         * cleanup: fix typo in syscall instrumentation header
 642         * Cleanup: remove trailing whitespace in README
 643         * trace event: introduce TP_MODULE_NOAUTOLOAD and TP_MODULE_NOINIT
 644         * LTTng: probe-statedump: add #include <linux/sched.h>
 645         * fix: signal_generate event should print utf8 for comm field
 646         * Makes write operation a parameter for tp_memcpy macro
 647         * Add coding style document
 648         * Update instrumentation/events README file
 649         * Add makefile target for preprocessor
 650         * Fix: free_event_id check should compare unsigned int with -1U
 651         * Use unsigned long type for events discarded counter
 652         * Fix: update signal instrumentation for 3.4 kernel
 653         * LTTng Modules ARM syscall instrumentation
 654         * Fix: generate header missing echo -e for escape chars
 655         * Fix: add missing uaccess.h include (for ARM)
 656         * README: Document that CONFIG_MODULES is required
 657         * Fix: README typo
 658         * Fix: document required and optional kernel config options in README
 659
 660 2012-03-29 LTTng modules 2.0.1
 661         * Fix: is_compat_task !CONFIG_COMPAT compile error on kernels >= 3.3
 662
 663 2012-03-20 LTTng modules 2.0.0
 664         * First STABLE version
 665         * Add version name
 666
 667 2012-03-20 LTTng modules 2.0.0-rc4
 668         * Update README and add version name place-holder
 669
 670 2012-03-16 LTTng modules 2.0.0-rc3
 671         * Fix clock offset 32-bit multiplication overflow
 672         * Fix : wrong assign of fd in state dump
 673         * License cleanup, ifdef namespace cleanup
 674         * Fix: ensure power of 2 check handles 64-bit size_t entirely
 675
 676 2012-03-02 LTTng modules 2.0.0-rc2
 677         * Fix: dmesg printout should not print metadata warnings
 678         * Fix: use transport name as channel name
 679         * Fix: Return -EINVAL instead of print warning if non power of 2 size/num_subbuf
 680
 681 2012-02-20 LTTng modules 2.0.0-rc1
 682         * Standardize version across toolchain
 683         * statedump: Use old macro name for kernel 2.6.38
 684
 685 2012-02-16 LTTng modules 2.0-pre15
 686         * Add timer instrumentation
 687         * fix: need to undef mainline define
 688         * fix: Include signal.h instead of irq.h for prototype match check
 689         * Add signal instrumentation
 690
 691 2012-02-16 LTTng modules 2.0-pre14
 692         * syscall tracing: sys_getcpu
 693         * Add sys_clone x86 instrumentation
 694         * statedump: fix include circular dep
 695         * Implement state dump
 696
 697 2012-02-09 LTTng modules 2.0-pre13
 698         * Update README
 699         * environment: write sysname, release, version, domain to metadata
 700         * Allow open /proc/lttng for read & write
 701
 702 2012-02-02 LTTng modules 2.0-pre12
 703         * Add x86 32/64 execve syscall instrumentation override
 704         * Remove unused defines
 705         * Add padding to ABI
 706         * Use LTTNG_KERNEL_SYM_NAME_LEN
 707         * Update version to 1.9.9
 708         * Add missing double-quotes to clock uuid
 709         * clock: read bootid as clock monotonic ID
 710         * Fix comment
 711         * Cleanup comment
 712         * clock: output clock description in metadata
 713         * Properly fix the timekeeping overflow detection
 714         * Fix init bug
 715         * rename lib-ring-buffer to lttng-lib-ring-buffer
 716         * Remove #warning
 717         * Mass rename: ltt_*/ltt-* to LTTNG_*/LTTNG-*
 718         * Update TODO
 719         * Update TODO
 720         * Remove debugfs file (keep only proc file)
 721         * Rename lttng-debugfs-abi files to lttng-abi
 722
 723 2011-12-13 LTTng modules 2.0-pre11
 724         * Fix OOPS caused by reference of config pointer
 725         * Gather detailed info from x86 64 32-bit compat syscall instrumentation
 726         * lttng lib: ring buffer move null pointer check to open
 727         * lttng lib: ring buffer remove duplicate null pointer
 728         * lttng lib: ring buffer: remove stale null-pointer
 729         * lttng wrapper: add missing include to kallsyms wrapper
 730         * lttng: cleanup one-bit signed bitfields
 731         * Add TODO file
 732         * Update symbol name length max size to 256
 733         * Fix last modifications to string_from_user operations
 734         * Document that depmod needs to be executed by hand
 735         * Fix strlen_user fault space reservation
 736         * Fix tp_copy_string_from_user handling of faults
 737         * Disable block layer tracing support for kernels < 2.6.38
 738         * lttng context: perf counter, fix 32-bit vs 64-bit field size bug
 739         * Update trace clock warning to match the current development plan
 740         * ringbuffer: make ring buffer printk less verbose
 741         * Makefile: do not run depmod manually
 742
 743 2011-09-30 LTTng modules 2.0-pre10
 744         * x86-32: override sys_mmap syscall instrumentation
 745         * Fix cast warning
 746
 747 2011-09-29 LTTng modules 2.0-pre9
 748         * x86 32 syscalls: fix !CONFIG_UID16
 749         * Use __string_from_user
 750         * Add __string_from_user
 751         * Rename "comm" context to "procname"
 752         * Fetch "type" name field for mount syscall
 753         * Create common override file for all architectures
 754         * Shrink stack size usage
 755         * Cleanup: remove unused lttng-compat-syscalls.c file
 756         * Support detailed compat syscalls on x86_64
 757         * Fix syscall table
 758         * Add disabled compat syscalls detail (work in progress)
 759         * Add config compat support for detailed x86_32 syscalls
 760         * Handle newer 3.1+ perf API
 761         * Add dummy x86-32 override headers
 762         * Bind x86-32 syscall headers
 763         * Add x86-32 syscall headers
 764         * Add check for KALLSYMS_ALL in syscall extraction script
 765         * Automate string extraction for syscalls
 766         * Automate syscall filename/pathname extraction
 767         * Add exit to ring_buffer_frontend so module is unloadable
 768         * Add sys_open filename (x86_64)
 769         * Add missing memcpy callback
 770         * copy_from_user and memset
 771         * Add missing alignment after header write
 772         * lib ring buffer: add frontend init as module_init
 773         * lib ring buffer frontend: add missing lock initialization
 774         * ARM: Set bit 0 for thumb mode in kallsyms_lookup_name returned address (missing file)
 775         * ARM: Set bit 0 for thumb mode in kallsyms_lookup_name returned address
 776         * Create override for sys_mmap
 777         * Rename syscalls -> syscall in LTTng ABI
 778         * Use different event name for compat syscalls
 779         * Allow trace syscall table override
 780         * Add dummy override files
 781         * syscall detail: add override capability
 782         * Add pointer pretty-print heuristics
 783         * Add __field_hex
 784         * Rename sys exit errno into ret
 785         * Enable detailed syscalls only for native x86_64
 786         * Use "unknown" for compat syscalls
 787         * Disable x86-64 specific detailed syscalls for now, until we deal with 32-bit compat
 788         * Fix syscall exit
 789         * Fix sys exit
 790         * Only enable detailed syscalls for x86_64 for now
 791         * Merge unknown syscall method with extended detail method
 792         * Add underscore prefix before event names
 793         * Add syscalls pointers detailed syscall tracing
 794         * Use perl for regexp
 795         * Support generation of syscall probes for those with pointers
 796         * Support detailed syscalls with 0 arguments
 797         * detailed syscall tracing (work in progress)
 798         * Expose /proc/lttng file
 799         * Implement detailed syscall event probe
 800         * Disable perf build for < 2.6.33 kernels
 801         * Syscall detail mode: generate syscall table
 802         * block instrumentation: write cmd as hex sequence
 803         * lttng-events TRACE_EVENT generator cleanup
 804         * block layer instrumentation: fix cmd field
 805         * Remove 0 args syscalls for now from type-aware syscall cb generator
 806         * Generate trace syscall table macros
 807         * Put syscall tracing without arg types back in place
 808         * Detailed system call tracing (TRACE_EVENT() generation for integer support)
 809         * lttng events probes: don't clash with "ctx" variable name
 810         * lib ring buffer must take private pointer copy before decrementing refcount
 811
 812 2011-08-16 LTTng modules 2.0-pre8
 813         * Fix metadata buffer wait/wakeup
 814
 815 2011-08-12 LTTng modules 2.0-pre7
 816         * Add missing module refcount to lttng_tracepoint_list_fops
 817         * Add license info about lib/ringbuffer/ring_buffer_mmap.c being GPLv2