ChangeLog

   1 2014-12-12 LTTng modules 2.6.0-rc2
   2         * Fix: compaction instrumentation update for 3.14.x stable kernels
   3         * Fix: context alignment not properly handled
   4         * Fix compilation on Linux kernel >= 3.18.0
   5         * Fix: build for architectures without HAVE_SYSCALL_TRACEPOINTS
   6
   7 2014-10-20 LTTng modules 2.6.0-rc1
   8         * Expose lttng-modules ABI version ioctl
   9         * Fix: syscall list ioctl number conflict
  10         * lttng-modules: fix build for non-x86
  11         * Fix: syscall listing of session
  12         * Print build warning when writeback probe is disabled
  13         * Add atomic.h wrapper for before/after atomic
  14         * Fix compilation on Ubuntu 14.10
  15         * Fix: export name as text array in writeback
  16         * Cleanup: remove unused trace_clock_read32()
  17         * Use 3.17 ktime_get_mono_fast_ns() new API
  18         * Check for stale version.h files
  19         * Fix: compile lttng_statedump_process_ns on Ubuntu
  20         * Reverse version check logic in lttng_statedump_process_ns
  21         * Fix block_rq_complete TP on Ubuntu kernel
  22         * Introduce macros to check Ubuntu kernel version
  23         * Sync writeback tracepoints from mainline
  24         * Fix: redefinition of DEFINE_WRITEBACK_EVENT
  25         * Fix: hander negative get_syscall_nr return value
  26         * Fix: statedump: close_on_exec flag backward compat
  27         * Fix instrumentation of vmscan for older kernels
  28         * Fix: older kernels (3.2.x) don't undefine TRACE_SYSTEM
  29         * Fix: syscall listing: handle "enable all syscall"
  30         * Fix: don't allow disabling syscalls when none are enabled
  31         * Fix: syscall: fail disable all if all already disabled
  32         * Fix: syscall filtering: NULL pointer deref
  33         * Cleanup: list syscall without syscall_entry prefix
  34         * Fix: syscall_list_show NULL pointer deref
  35         * implement syscall mask getter
  36         * Cleanup: lttng-abi.h coding style
  37         * syscall listing: show syscall ID
  38         * Allow events with same name to be enabled for each channel
  39         * ABI: use enable a syscall ABI field name
  40         * Implement syscall listing
  41         * Fix: tracepoint list anonymous file name
  42         * Fix: syscall filtering: disable all syscalls
  43         * syscall tracing: input/output parameter handling for all arch
  44         * lttng-get-syscall-inout.sh depends on bash
  45         * Fix generate syscall header script: add missing escape char
  46         * syscall instrumentation: handle copy_from_user return value
  47         * Rename LTTng syscall instrumentation macros
  48         * Rename LTTng instrumentation macros
  49         * Extract input/output arguments from accept and connect syscalls
  50         * syscall: extract pipe and pipe2 output args
  51         * Remove sys_ prefix from syscall names
  52         * System call inout/output arg processing
  53         * Update syscall inout table
  54         * Add syscall inout table
  55         * Extract syscall exit ret value on x86 32/64
  56         * Extract system call exit return value
  57         * Syscall filtering: apply to syscall exit
  58         * System call filtering
  59         * asoc.h: fix build with v3.17 kernel
  60         * Fix: lttng-modules teardown NULL pointer OOPS
  61         * Fix: handle concurrent flush vs get_next_subbuf on metadata cache
  62         * Modernize README using Markdown
  63         * Fix: OOT lttng_logger tracepoint not visible with signed kernels
  64         * Add cscope to gitignore
  65         * Update kvm instrumentation: compile on 3.17-rc1
  66         * Update statedump to 3.17 nsproxy locking
  67         * Fix: noargs probes should calculate alignment and event length
  68         * Update compaction instrumentation to 3.16 kernel
  69         * Update vmscan instrumentation to 3.16 kernel
  70
  71 2014-07-16 (Take Your Poet to Work Day) LTTng modules 2.5.0
  72         * (no change)
  73
  74 2014-06-27 LTTng modules 2.5.0-rc2
  75         * Fix: statedump: check whether "files" is NULL, RCU semantic fix
  76         * Fix: statedump handle oom case, handle errors
  77         * Fix: correct typo in kernel version number
  78         * Fix: blktrace instrumentation for backported branches
  79         * Fix: statedump block devices OOPS
  80
  81 2014-05-28 (International Hamburger Day) LTTng modules 2.5.0-rc1
  82         * Add TID field to some block_* events
  83         * Fix: refuse overwrite mode buffers with less than two subbuffers
  84         * Fix: lttng modules system call generation script
  85         * Dump FD flags and mode on state dump
  86         * Fix: incorrect rwbs field type in block_bio_queue
  87         * Fix: blktrace instrumentation for v3.2.58+ stable branch
  88         * Fix: pass proper args when writing commit counter
  89         * Cleanup: lib ringbuffer: pagecpy has unsigned semantic
  90         * Fix: allow racy tracepoint string input from kernel and userspace
  91         * Statedump event for block devices
  92         * Fix: update v4l2 instrumentation to 3.15 kernel
  93         * Fix: ext4 update instrumentation to 3.15 kernel
  94         * Fix: update block instrumentation to 3.15 kernel
  95         * Fix: module instrumentation: update to 3.15 kernel
  96         * Adapt to 3.15 tracepoint API
  97         * Kernel 3.15 don't define map unmap for pipe
  98         * Fix: add missing module version in v4l2 probe
  99         * Add V4L2 instrumentation
 100         * Fix: rcu instrumentation: add const qualifier to char pointers
 101         * Fix: add missing module version information
 102         * Use kernel 3.13 syscall tables for MIPS32
 103         * Add MIPS32 syscalls extracted from a 3.13 kernel
 104         * Fix: block instrumentation: < 3.14 don't have bi_iter
 105         * Fix: update btrfs instrumentation to kernel 3.14
 106         * Fix: update block layer instrumentation to kernel 3.14
 107         * Fix: remove __exit annotation
 108         * Fix file permissions for lttng-statedump-impl.c
 109         * LTTng logger ABI
 110
 111 2014-02-28 (Public Sleeping Day) LTTng modules 2.4.0
 112         * Fix: load state dump even if work-around lookup fails
 113         * Cleanup: fix comment
 114         * Fix: correctly version kvm events to build against v3.0 kernel
 115         * Add extraversion (e.g. -rc4) to lttng-tracer modinfo
 116
 117 2014-02-14 LTTng modules 2.4.0-rc4
 118         * Fix: use after free in ring buffer clients
 119         * Fix: Add statedump exit so module is not permanent
 120         * Cleanup: move callback init to static initialization
 121         * Fix: OOT lttng-statedump tracepoints not visible with signed kernels
 122
 123 2014-01-29 LTTng modules 2.4.0-rc3
 124         * Fix: tracepoint event name mapping at unregister
 125         * Fix: tracepoint name remapping
 126         * Fix: enable event error path memory corruption
 127         * Update kvm instrumentation to Linux 3.13
 128         * Update sched instrumentation to Linux 3.13
 129         * Fix: provide more precise error report for enable event
 130         * Fix: quote event name in metadata
 131         * Add version info to lttng-tracer.ko modinfo
 132
 133 2013-12-10 LTTng modules 2.4.0-rc2
 134         * Fix: client_packet_header() uses wrong packet
 135         * Cleanup: fix typo in ring buffer backend comment
 136         * Fix: handle unknown event type parameter
 137         * Fix: eliminate timestamp overlap between packets
 138         * gcc blacklist: only apply when building with gcc
 139         * Blacklist ARM gcc 4.8.0, 4.8.1, 4.8.2
 140
 141 2013-11-15 LTTng modules 2.4.0-rc1
 142         * Update ext4 instrumentation to Linux 3.12
 143         * Update RCU instrumentation to Linux 3.12
 144         * Update btrfs instrumentation to 3.12 kernel
 145         * Update vmscan instrumentation to Linux 3.12
 146         * update: kmem instrumentation 3.12 kernel support
 147         * lttng-statedump-impl: Use generic hard irqs for Linux >= 3.12
 148         * lttng-statedump-impl: Fix lttng_list_interrupts for empty implementation
 149         * Import fix from LTSI: 3.4+ RT kernels use CONFIG_PREEMPT_RT_FULL
 150         * Add new tracepoint in KVM
 151         * Blacklist kernels 3.10.13 and 3.11.2
 152         * LTTng trace-clock: shrink kernel blacklist
 153         * Metadata flush writes data from the cache
 154         * Per-stream ioctl to get the current timestamp
 155         * LTTng ringbuffer ABI calls for index generation
 156         * Prepare LTTng override of ring buffer fops
 157         * Blacklist Linux kernels 3.10+
 158
 159 2013-09-03 LTTng modules 2.3.0
 160         * Fix: metadata stream should not reference session
 161         * Fix: btrfs: support 3.11 Linux kernel
 162         * statedump: remove KERN_DEBUG messages
 163         * Fix: ext4: add missing tracepoints for 3.11 kernel
 164         * Fix: ext4: Linux 3.11 support
 165         * Fix: ext3: 3.11 Linux support
 166         * Fix: statedump nsproxy 3.11 Linux support
 167
 168 2013-08-30 LTTng modules 2.3.0-rc2
 169         * Fix: metadata lttng channel refcount
 170         * README: lttng-modules incompatible with lttng 0.x patchset
 171
 172 2013-07-17 LTTng modules 2.3.0-rc1
 173         * Fix: kvm x86 probes side-effect
 174         * Fix: allow get/put subbuf in loop for metadata stream
 175         * Add support for kvm x86 specific tracepoints
 176         * Add mainline headers for kvm x86 tracepoints
 177         * Remove old 3.0.4 x86-64 extracted syscall info
 178         * Point the x86-64 overrides to newly extracted 3.10-rc7 files
 179         * Add syscalls extracted files from a 3.10-rc7 kernel
 180         * Improve documentation of the syscall extractor script
 181         * Fix: double length of __dynamic_len array
 182         * Fix printk instrumentation
 183         * Introduce __dynamic_array_enc_ext_2() and tp_memcpy_dyn_2()
 184         * Fix: ring buffer: get_subbuf() checks should be performed on "consumed" parameter
 185         * Fix: SWITCH_FLUSH new sub-buffer checks
 186         * Fix: ring buffer: handle concurrent update in nested buffer wrap around check
 187         * Cleanup: lib_ring_buffer_switch_new_end() only calls subbuffer_set_data_size()
 188         * Revert "Cleanup: ring buffer: remove lib_ring_buffer_switch_new_end()"
 189         * Fix: handle writes of length 0
 190         * Fix: ring buffer: RING_BUFFER_FLUSH ioctl buffer corruption
 191         * Cleanup: ring buffer: remove lib_ring_buffer_switch_new_end()
 192         * print warning and return -EBUSY on double get_subbuf()
 193         * Add header to fix compilation of syscalls-extractor on 3.9 kernel
 194         * Fix: don't do 0 byte event reservation
 195         * Document that payload size need to be greater than 0
 196         * Fix build and load against linux-2.6.33.x
 197         * Fix: add missing CONFIG_COMPAT around lib_ring_buffer_compat_ioctl
 198         * Metadata cache and multiple metadata channels
 199         * fix block instrumentation probe signature mismatch for 3.9.x kernels
 200         * fix: block instrumentation: NULL pointer dereference
 201         * Update rcu instrumentation to 3.9.[0-4]
 202         * Fix CPU hotplug section mismatches
 203         * Add system calls definitions for powerpc-32
 204         * Remove bashism in lttng-syscalls-generate-headers.sh
 205         * Update ARM (32 bit) syscall tracepoints to 3.4
 206
 207 2013-05-09 LTTng modules 2.2.0-rc2
 208         * Remove useless lttng_metadata probe
 209         * Fix: warning kvm_trace_exit_reason redefined for 3.9 kernel
 210         * Fix: 3.9.0 block layer instrumentation build
 211         * Revert "Stop build if CONFIG_TRACEPOINTS is not set"
 212         * Stop build if CONFIG_TRACEPOINTS is not set
 213         * Add comments to endifs.
 214         * Fix: remove ARM set_tls system call override
 215         * Cleanup: arm sys_mmap whitespace
 216         * Clean up using global_dirty_limit wrapper for writeback probe
 217
 218 2013-03-29 LTTng modules 2.2.0-rc1
 219         * Update README
 220         * Fix: vmscan instrumentation build
 221         * writeback instrumentation: remove duplicated structures
 222         * block: update instrumentation to 3.9 rc kernel
 223         * rcu: update to 3.9 rc kernel instrumentation
 224         * workqueue instrumentation: remove duplicated structures
 225         * Rename odd event names
 226         * Introduce API to remap event names exposed by LTTng
 227         * lttng-module: sched.h: Fix compilation on 3.9 kernel
 228         * Fix Linux 3.8 btrfs probe warning
 229         * Fix Linux 3.8 ext4 probe support
 230         * Fix 3.8 kernel support: namespace lttng_is_signed_type()
 231         * Fix: don't flush-final for offset 0 if reader is on sub-buffer
 232         * instrumentation sched: add missing fork pid info
 233         * Fix check in lttng_strlen_user_inatomic
 234         * instrumentation: sync with Linux commit a1ce392
 235         * Fix: statedump: missing locking, use lttng_iterate_fd
 236         * Implement lttng_iterate_fd wrapper
 237         * Instrumentation cleanup: kmem events should print hex pointers
 238         * Fix compilation of ext4 and btrfs tracepoints on 2.6.40 kernels
 239         * Fix: statedump hang/too early completion due to logic error
 240         * Fix: statedump hang due to incorrect wait/wakeup use
 241         * put_ulong calls in lib_ring_buffer_compat_ioctl() should be compat
 242         * wrapper/perf.h: Fix kernel version condition
 243         * Add new kernel probes instrumentation
 244         * Update kernel probes to more detailed match to kernel versions
 245         * Fix possible kernel build errors with linux-patches
 246         * Add missing MIT license text to 3 files under this license
 247         * Update sites using kernel version checking macro to new range
 248         * Make upper bound of kernel version checking macro exclusive
 249         * sock instrumentation: fix fields to get referenced values
 250         * ext3 instrumentation: fix of assignment code conversion
 251         * sched instrumentation: rename "pid" fields in sched_process_exec
 252         * Remove remaining semicolons in TP_fast_assign blocks
 253         * Fix compilation for 3.0 kernels that are named 2.6.40
 254         * Fix compilation for 3.0 branch (>= 3.0.39)
 255         * Add kernel version checking macro
 256         * Remove semicolons in TP_fast_assign blocks
 257         * Add ifdefs to net probe to support Linux 2.6.39
 258         * Add kernel probes for supplementary subsystems
 259         * Check if interrupt action name is not null in statedump
 260         * Fix exec instrumentation: only for kernels 3.4.0 and higher
 261         * Add TRACE_EVENT(sched_process_exec) to sched.h
 262         * lib/ringbuffer/frontend_api.h: Include linux/prefetch.h.
 263         * Fix warning with 3.6.0 kernel
 264         * ABI with support for compat 32/64 bits
 265         * Perform calculation on bit size in 64-bit
 266         * Use uint64_t for packet header content size and packet size
 267         * Fix: compat layer only on supported architectures
 268         * Fix ring buffer 32/64 bits compat
 269         * Fix cleanup: move lttng-tracer-core.h include to lib ringbuffer config.h
 270         * Fix ring_buffer_frontend.c: missing include lttng-tracer-core.h
 271         * Fix: statedump missing check for NULL namespace
 272
 273 2012-09-10 LTTng modules 2.1.0-rc1
 274         * fix timestamps on architectures without CONFIG_KTIME_SCALAR
 275         * Support for linux kernels 2.6.32 through 2.6.37
 276         * Document limitation of vppid and ppid context wrt eventual RCU instrumentation
 277         * Cleanup: no need to hold RCU read-side lock when reading current nsproxy
 278         * Add env hostname information
 279         * Fix: lttng_statedump_process_state for each PID NS has infinite loop
 280         * lttng_statedump_process_state for each PID NS
 281         * Support the hostname context
 282         * Fix: statedump namespaced pid, tid and ppid
 283         * Fix: statedump: disable vm maps enumeration
 284         * Fix: ensure userspace accesses are done with _inatomic
 285         * Fix: vppid context should test for current nsproxy
 286         * Add MIPS system call support
 287         * Change mode of lttng-syscalls-generate-headers.sh to 755
 288         * cleanup: fix typo in syscall instrumentation header
 289         * Cleanup: remove trailing whitespace in README
 290         * trace event: introduce TP_MODULE_NOAUTOLOAD and TP_MODULE_NOINIT
 291         * LTTng: probe-statedump: add #include <linux/sched.h>
 292         * fix: signal_generate event should print utf8 for comm field
 293         * Makes write operation a parameter for tp_memcpy macro
 294         * Add coding style document
 295         * Update instrumentation/events README file
 296         * Add makefile target for preprocessor
 297         * Fix: free_event_id check should compare unsigned int with -1U
 298         * Use unsigned long type for events discarded counter
 299         * Fix: update signal instrumentation for 3.4 kernel
 300         * LTTng Modules ARM syscall instrumentation
 301         * Fix: generate header missing echo -e for escape chars
 302         * Fix: add missing uaccess.h include (for ARM)
 303         * README: Document that CONFIG_MODULES is required
 304         * Fix: README typo
 305         * Fix: document required and optional kernel config options in README
 306
 307 2012-03-29 LTTng modules 2.0.1
 308         * Fix: is_compat_task !CONFIG_COMPAT compile error on kernels >= 3.3
 309
 310 2012-03-20 LTTng modules 2.0.0
 311         * First STABLE version
 312         * Add version name
 313
 314 2012-03-20 LTTng modules 2.0.0-rc4
 315         * Update README and add version name place-holder
 316
 317 2012-03-16 LTTng modules 2.0.0-rc3
 318         * Fix clock offset 32-bit multiplication overflow
 319         * Fix : wrong assign of fd in state dump
 320         * License cleanup, ifdef namespace cleanup
 321         * Fix: ensure power of 2 check handles 64-bit size_t entirely
 322
 323 2012-03-02 LTTng modules 2.0.0-rc2
 324         * Fix: dmesg printout should not print metadata warnings
 325         * Fix: use transport name as channel name
 326         * Fix: Return -EINVAL instead of print warning if non power of 2 size/num_subbuf
 327
 328 2012-02-20 LTTng modules 2.0.0-rc1
 329         * Standardize version across toolchain
 330         * statedump: Use old macro name for kernel 2.6.38
 331
 332 2012-02-16 LTTng modules 2.0-pre15
 333         * Add timer instrumentation
 334         * fix: need to undef mainline define
 335         * fix: Include signal.h instead of irq.h for prototype match check
 336         * Add signal instrumentation
 337
 338 2012-02-16 LTTng modules 2.0-pre14
 339         * syscall tracing: sys_getcpu
 340         * Add sys_clone x86 instrumentation
 341         * statedump: fix include circular dep
 342         * Implement state dump
 343
 344 2012-02-09 LTTng modules 2.0-pre13
 345         * Update README
 346         * environment: write sysname, release, version, domain to metadata
 347         * Allow open /proc/lttng for read & write
 348
 349 2012-02-02 LTTng modules 2.0-pre12
 350         * Add x86 32/64 execve syscall instrumentation override
 351         * Remove unused defines
 352         * Add padding to ABI
 353         * Use LTTNG_KERNEL_SYM_NAME_LEN
 354         * Update version to 1.9.9
 355         * Add missing double-quotes to clock uuid
 356         * clock: read bootid as clock monotonic ID
 357         * Fix comment
 358         * Cleanup comment
 359         * clock: output clock description in metadata
 360         * Properly fix the timekeeping overflow detection
 361         * Fix init bug
 362         * rename lib-ring-buffer to lttng-lib-ring-buffer
 363         * Remove #warning
 364         * Mass rename: ltt_*/ltt-* to LTTNG_*/LTTNG-*
 365         * Update TODO
 366         * Update TODO
 367         * Remove debugfs file (keep only proc file)
 368         * Rename lttng-debugfs-abi files to lttng-abi
 369
 370 2011-12-13 LTTng modules 2.0-pre11
 371         * Fix OOPS caused by reference of config pointer
 372         * Gather detailed info from x86 64 32-bit compat syscall instrumentation
 373         * lttng lib: ring buffer move null pointer check to open
 374         * lttng lib: ring buffer remove duplicate null pointer
 375         * lttng lib: ring buffer: remove stale null-pointer
 376         * lttng wrapper: add missing include to kallsyms wrapper
 377         * lttng: cleanup one-bit signed bitfields
 378         * Add TODO file
 379         * Update symbol name length max size to 256
 380         * Fix last modifications to string_from_user operations
 381         * Document that depmod needs to be executed by hand
 382         * Fix strlen_user fault space reservation
 383         * Fix tp_copy_string_from_user handling of faults
 384         * Disable block layer tracing support for kernels < 2.6.38
 385         * lttng context: perf counter, fix 32-bit vs 64-bit field size bug
 386         * Update trace clock warning to match the current development plan
 387         * ringbuffer: make ring buffer printk less verbose
 388         * Makefile: do not run depmod manually
 389
 390 2011-09-30 LTTng modules 2.0-pre10
 391         * x86-32: override sys_mmap syscall instrumentation
 392         * Fix cast warning
 393
 394 2011-09-29 LTTng modules 2.0-pre9
 395         * x86 32 syscalls: fix !CONFIG_UID16
 396         * Use __string_from_user
 397         * Add __string_from_user
 398         * Rename "comm" context to "procname"
 399         * Fetch "type" name field for mount syscall
 400         * Create common override file for all architectures
 401         * Shrink stack size usage
 402         * Cleanup: remove unused lttng-compat-syscalls.c file
 403         * Support detailed compat syscalls on x86_64
 404         * Fix syscall table
 405         * Add disabled compat syscalls detail (work in progress)
 406         * Add config compat support for detailed x86_32 syscalls
 407         * Handle newer 3.1+ perf API
 408         * Add dummy x86-32 override headers
 409         * Bind x86-32 syscall headers
 410         * Add x86-32 syscall headers
 411         * Add check for KALLSYMS_ALL in syscall extraction script
 412         * Automate string extraction for syscalls
 413         * Automate syscall filename/pathname extraction
 414         * Add exit to ring_buffer_frontend so module is unloadable
 415         * Add sys_open filename (x86_64)
 416         * Add missing memcpy callback
 417         * copy_from_user and memset
 418         * Add missing alignment after header write
 419         * lib ring buffer: add frontend init as module_init
 420         * lib ring buffer frontend: add missing lock initialization
 421         * ARM: Set bit 0 for thumb mode in kallsyms_lookup_name returned address (missing file)
 422         * ARM: Set bit 0 for thumb mode in kallsyms_lookup_name returned address
 423         * Create override for sys_mmap
 424         * Rename syscalls -> syscall in LTTng ABI
 425         * Use different event name for compat syscalls
 426         * Allow trace syscall table override
 427         * Add dummy override files
 428         * syscall detail: add override capability
 429         * Add pointer pretty-print heuristics
 430         * Add __field_hex
 431         * Rename sys exit errno into ret
 432         * Enable detailed syscalls only for native x86_64
 433         * Use "unknown" for compat syscalls
 434         * Disable x86-64 specific detailed syscalls for now, until we deal with 32-bit compat
 435         * Fix syscall exit
 436         * Fix sys exit
 437         * Only enable detailed syscalls for x86_64 for now
 438         * Merge unknown syscall method with extended detail method
 439         * Add underscore prefix before event names
 440         * Add syscalls pointers detailed syscall tracing
 441         * Use perl for regexp
 442         * Support generation of syscall probes for those with pointers
 443         * Support detailed syscalls with 0 arguments
 444         * detailed syscall tracing (work in progress)
 445         * Expose /proc/lttng file
 446         * Implement detailed syscall event probe
 447         * Disable perf build for < 2.6.33 kernels
 448         * Syscall detail mode: generate syscall table
 449         * block instrumentation: write cmd as hex sequence
 450         * lttng-events TRACE_EVENT generator cleanup
 451         * block layer instrumentation: fix cmd field
 452         * Remove 0 args syscalls for now from type-aware syscall cb generator
 453         * Generate trace syscall table macros
 454         * Put syscall tracing without arg types back in place
 455         * Detailed system call tracing (TRACE_EVENT() generation for integer support)
 456         * lttng events probes: don't clash with "ctx" variable name
 457         * lib ring buffer must take private pointer copy before decrementing refcount
 458
 459 2011-08-16 LTTng modules 2.0-pre8
 460         * Fix metadata buffer wait/wakeup
 461
 462 2011-08-12 LTTng modules 2.0-pre7
 463         * Add missing module refcount to lttng_tracepoint_list_fops
 464         * Add license info about lib/ringbuffer/ring_buffer_mmap.c being GPLv2