ChangeLog

   1 2015-04-29 LTTng modules 2.5.4
   2         * Fix: mmutrace warnings about redefined macros
   3         * Fix: x86 mmutrace event extra field for kernels >= 3.11
   4         * Fix: add missing x86 mmutrace kernel header include
   5         * Fix: update README file to match reality: kernels >= 2.6.36 are supported
   6         * Fix: add struct file_handle forward declaration
   7         * Fix: atomic.h wrapper for kernels < 2.6.37
   8         * Fix: disable x86 kvm instrumentation for kernels < 2.6.38
   9         * Fix: mm_page_alloc_extfrag instrumentation for kernel 3.14.36
  10         * Fix: update backported kmem patches to lttng-modules 2.5 API
  11         * Fix: kmem instrumentation update for mm_page_alloc_extfrag kernel 3.19.2+
  12         * Fix: kmem instrumentation: mm_page_alloc extfrag change_ownership field
  13
  14 2015-01-26 LTTng modules 2.5.3
  15         * Fix: missing parenthesis in offset_align_floor
  16         * Fix: implement time.h wrapper for FD_ISSET
  17         * Fix compile error on kernel 3.0.101 with CONFIG_PERF_EVENTS
  18         * Conditional compilation introduced by lttng-modules commit
  19
  20 2014-12-12 LTTng modules 2.5.2
  21         * Fix: compaction instrumentation update for 3.14.x stable kernels
  22         * Fix: context alignment not properly handled
  23
  24 2014-10-20 LTTng modules 2.5.1
  25         * Print build warning when writeback probe is disabled
  26         * Fix compilation on Ubuntu 14.10
  27         * Fix: compile lttng_statedump_process_ns on Ubuntu
  28         * Reverse version check logic in lttng_statedump_process_ns
  29         * Update statedump to 3.17 nsproxy locking
  30         * Fix block_rq_complete TP on Ubuntu kernel
  31         * Introduce macros to check Ubuntu kernel version
  32         * asoc.h: fix build with v3.17 kernel
  33         * Add atomic.h wrapper for before/after atomic
  34         * Update vmscan instrumentation to 3.16 kernel
  35         * Update compaction instrumentation to 3.16 kernel
  36         * Check for stale version.h files
  37         * Fix: statedump: close_on_exec flag backward compat
  38         * Fix: lttng-modules teardown NULL pointer OOPS
  39         * Fix: handle concurrent flush vs get_next_subbuf on metadata cache
  40         * Fix: OOT lttng_logger tracepoint not visible with signed kernels
  41
  42 2014-07-16 (Take Your Poet to Work Day) LTTng modules 2.5.0
  43         * (no change)
  44
  45 2014-06-27 LTTng modules 2.5.0-rc2
  46         * Fix: statedump: check whether "files" is NULL, RCU semantic fix
  47         * Fix: statedump handle oom case, handle errors
  48         * Fix: correct typo in kernel version number
  49         * Fix: blktrace instrumentation for backported branches
  50         * Fix: statedump block devices OOPS
  51
  52 2014-05-28 (International Hamburger Day) LTTng modules 2.5.0-rc1
  53         * Add TID field to some block_* events
  54         * Fix: refuse overwrite mode buffers with less than two subbuffers
  55         * Fix: lttng modules system call generation script
  56         * Dump FD flags and mode on state dump
  57         * Fix: incorrect rwbs field type in block_bio_queue
  58         * Fix: blktrace instrumentation for v3.2.58+ stable branch
  59         * Fix: pass proper args when writing commit counter
  60         * Cleanup: lib ringbuffer: pagecpy has unsigned semantic
  61         * Fix: allow racy tracepoint string input from kernel and userspace
  62         * Statedump event for block devices
  63         * Fix: update v4l2 instrumentation to 3.15 kernel
  64         * Fix: ext4 update instrumentation to 3.15 kernel
  65         * Fix: update block instrumentation to 3.15 kernel
  66         * Fix: module instrumentation: update to 3.15 kernel
  67         * Adapt to 3.15 tracepoint API
  68         * Kernel 3.15 don't define map unmap for pipe
  69         * Fix: add missing module version in v4l2 probe
  70         * Add V4L2 instrumentation
  71         * Fix: rcu instrumentation: add const qualifier to char pointers
  72         * Fix: add missing module version information
  73         * Use kernel 3.13 syscall tables for MIPS32
  74         * Add MIPS32 syscalls extracted from a 3.13 kernel
  75         * Fix: block instrumentation: < 3.14 don't have bi_iter
  76         * Fix: update btrfs instrumentation to kernel 3.14
  77         * Fix: update block layer instrumentation to kernel 3.14
  78         * Fix: remove __exit annotation
  79         * Fix file permissions for lttng-statedump-impl.c
  80         * LTTng logger ABI
  81
  82 2014-02-28 (Public Sleeping Day) LTTng modules 2.4.0
  83         * Fix: load state dump even if work-around lookup fails
  84         * Cleanup: fix comment
  85         * Fix: correctly version kvm events to build against v3.0 kernel
  86         * Add extraversion (e.g. -rc4) to lttng-tracer modinfo
  87
  88 2014-02-14 LTTng modules 2.4.0-rc4
  89         * Fix: use after free in ring buffer clients
  90         * Fix: Add statedump exit so module is not permanent
  91         * Cleanup: move callback init to static initialization
  92         * Fix: OOT lttng-statedump tracepoints not visible with signed kernels
  93
  94 2014-01-29 LTTng modules 2.4.0-rc3
  95         * Fix: tracepoint event name mapping at unregister
  96         * Fix: tracepoint name remapping
  97         * Fix: enable event error path memory corruption
  98         * Update kvm instrumentation to Linux 3.13
  99         * Update sched instrumentation to Linux 3.13
 100         * Fix: provide more precise error report for enable event
 101         * Fix: quote event name in metadata
 102         * Add version info to lttng-tracer.ko modinfo
 103
 104 2013-12-10 LTTng modules 2.4.0-rc2
 105         * Fix: client_packet_header() uses wrong packet
 106         * Cleanup: fix typo in ring buffer backend comment
 107         * Fix: handle unknown event type parameter
 108         * Fix: eliminate timestamp overlap between packets
 109         * gcc blacklist: only apply when building with gcc
 110         * Blacklist ARM gcc 4.8.0, 4.8.1, 4.8.2
 111
 112 2013-11-15 LTTng modules 2.4.0-rc1
 113         * Update ext4 instrumentation to Linux 3.12
 114         * Update RCU instrumentation to Linux 3.12
 115         * Update btrfs instrumentation to 3.12 kernel
 116         * Update vmscan instrumentation to Linux 3.12
 117         * update: kmem instrumentation 3.12 kernel support
 118         * lttng-statedump-impl: Use generic hard irqs for Linux >= 3.12
 119         * lttng-statedump-impl: Fix lttng_list_interrupts for empty implementation
 120         * Import fix from LTSI: 3.4+ RT kernels use CONFIG_PREEMPT_RT_FULL
 121         * Add new tracepoint in KVM
 122         * Blacklist kernels 3.10.13 and 3.11.2
 123         * LTTng trace-clock: shrink kernel blacklist
 124         * Metadata flush writes data from the cache
 125         * Per-stream ioctl to get the current timestamp
 126         * LTTng ringbuffer ABI calls for index generation
 127         * Prepare LTTng override of ring buffer fops
 128         * Blacklist Linux kernels 3.10+
 129
 130 2013-09-03 LTTng modules 2.3.0
 131         * Fix: metadata stream should not reference session
 132         * Fix: btrfs: support 3.11 Linux kernel
 133         * statedump: remove KERN_DEBUG messages
 134         * Fix: ext4: add missing tracepoints for 3.11 kernel
 135         * Fix: ext4: Linux 3.11 support
 136         * Fix: ext3: 3.11 Linux support
 137         * Fix: statedump nsproxy 3.11 Linux support
 138
 139 2013-08-30 LTTng modules 2.3.0-rc2
 140         * Fix: metadata lttng channel refcount
 141         * README: lttng-modules incompatible with lttng 0.x patchset
 142
 143 2013-07-17 LTTng modules 2.3.0-rc1
 144         * Fix: kvm x86 probes side-effect
 145         * Fix: allow get/put subbuf in loop for metadata stream
 146         * Add support for kvm x86 specific tracepoints
 147         * Add mainline headers for kvm x86 tracepoints
 148         * Remove old 3.0.4 x86-64 extracted syscall info
 149         * Point the x86-64 overrides to newly extracted 3.10-rc7 files
 150         * Add syscalls extracted files from a 3.10-rc7 kernel
 151         * Improve documentation of the syscall extractor script
 152         * Fix: double length of __dynamic_len array
 153         * Fix printk instrumentation
 154         * Introduce __dynamic_array_enc_ext_2() and tp_memcpy_dyn_2()
 155         * Fix: ring buffer: get_subbuf() checks should be performed on "consumed" parameter
 156         * Fix: SWITCH_FLUSH new sub-buffer checks
 157         * Fix: ring buffer: handle concurrent update in nested buffer wrap around check
 158         * Cleanup: lib_ring_buffer_switch_new_end() only calls subbuffer_set_data_size()
 159         * Revert "Cleanup: ring buffer: remove lib_ring_buffer_switch_new_end()"
 160         * Fix: handle writes of length 0
 161         * Fix: ring buffer: RING_BUFFER_FLUSH ioctl buffer corruption
 162         * Cleanup: ring buffer: remove lib_ring_buffer_switch_new_end()
 163         * print warning and return -EBUSY on double get_subbuf()
 164         * Add header to fix compilation of syscalls-extractor on 3.9 kernel
 165         * Fix: don't do 0 byte event reservation
 166         * Document that payload size need to be greater than 0
 167         * Fix build and load against linux-2.6.33.x
 168         * Fix: add missing CONFIG_COMPAT around lib_ring_buffer_compat_ioctl
 169         * Metadata cache and multiple metadata channels
 170         * fix block instrumentation probe signature mismatch for 3.9.x kernels
 171         * fix: block instrumentation: NULL pointer dereference
 172         * Update rcu instrumentation to 3.9.[0-4]
 173         * Fix CPU hotplug section mismatches
 174         * Add system calls definitions for powerpc-32
 175         * Remove bashism in lttng-syscalls-generate-headers.sh
 176         * Update ARM (32 bit) syscall tracepoints to 3.4
 177
 178 2013-05-09 LTTng modules 2.2.0-rc2
 179         * Remove useless lttng_metadata probe
 180         * Fix: warning kvm_trace_exit_reason redefined for 3.9 kernel
 181         * Fix: 3.9.0 block layer instrumentation build
 182         * Revert "Stop build if CONFIG_TRACEPOINTS is not set"
 183         * Stop build if CONFIG_TRACEPOINTS is not set
 184         * Add comments to endifs.
 185         * Fix: remove ARM set_tls system call override
 186         * Cleanup: arm sys_mmap whitespace
 187         * Clean up using global_dirty_limit wrapper for writeback probe
 188
 189 2013-03-29 LTTng modules 2.2.0-rc1
 190         * Update README
 191         * Fix: vmscan instrumentation build
 192         * writeback instrumentation: remove duplicated structures
 193         * block: update instrumentation to 3.9 rc kernel
 194         * rcu: update to 3.9 rc kernel instrumentation
 195         * workqueue instrumentation: remove duplicated structures
 196         * Rename odd event names
 197         * Introduce API to remap event names exposed by LTTng
 198         * lttng-module: sched.h: Fix compilation on 3.9 kernel
 199         * Fix Linux 3.8 btrfs probe warning
 200         * Fix Linux 3.8 ext4 probe support
 201         * Fix 3.8 kernel support: namespace lttng_is_signed_type()
 202         * Fix: don't flush-final for offset 0 if reader is on sub-buffer
 203         * instrumentation sched: add missing fork pid info
 204         * Fix check in lttng_strlen_user_inatomic
 205         * instrumentation: sync with Linux commit a1ce392
 206         * Fix: statedump: missing locking, use lttng_iterate_fd
 207         * Implement lttng_iterate_fd wrapper
 208         * Instrumentation cleanup: kmem events should print hex pointers
 209         * Fix compilation of ext4 and btrfs tracepoints on 2.6.40 kernels
 210         * Fix: statedump hang/too early completion due to logic error
 211         * Fix: statedump hang due to incorrect wait/wakeup use
 212         * put_ulong calls in lib_ring_buffer_compat_ioctl() should be compat
 213         * wrapper/perf.h: Fix kernel version condition
 214         * Add new kernel probes instrumentation
 215         * Update kernel probes to more detailed match to kernel versions
 216         * Fix possible kernel build errors with linux-patches
 217         * Add missing MIT license text to 3 files under this license
 218         * Update sites using kernel version checking macro to new range
 219         * Make upper bound of kernel version checking macro exclusive
 220         * sock instrumentation: fix fields to get referenced values
 221         * ext3 instrumentation: fix of assignment code conversion
 222         * sched instrumentation: rename "pid" fields in sched_process_exec
 223         * Remove remaining semicolons in TP_fast_assign blocks
 224         * Fix compilation for 3.0 kernels that are named 2.6.40
 225         * Fix compilation for 3.0 branch (>= 3.0.39)
 226         * Add kernel version checking macro
 227         * Remove semicolons in TP_fast_assign blocks
 228         * Add ifdefs to net probe to support Linux 2.6.39
 229         * Add kernel probes for supplementary subsystems
 230         * Check if interrupt action name is not null in statedump
 231         * Fix exec instrumentation: only for kernels 3.4.0 and higher
 232         * Add TRACE_EVENT(sched_process_exec) to sched.h
 233         * lib/ringbuffer/frontend_api.h: Include linux/prefetch.h.
 234         * Fix warning with 3.6.0 kernel
 235         * ABI with support for compat 32/64 bits
 236         * Perform calculation on bit size in 64-bit
 237         * Use uint64_t for packet header content size and packet size
 238         * Fix: compat layer only on supported architectures
 239         * Fix ring buffer 32/64 bits compat
 240         * Fix cleanup: move lttng-tracer-core.h include to lib ringbuffer config.h
 241         * Fix ring_buffer_frontend.c: missing include lttng-tracer-core.h
 242         * Fix: statedump missing check for NULL namespace
 243
 244 2012-09-10 LTTng modules 2.1.0-rc1
 245         * fix timestamps on architectures without CONFIG_KTIME_SCALAR
 246         * Support for linux kernels 2.6.32 through 2.6.37
 247         * Document limitation of vppid and ppid context wrt eventual RCU instrumentation
 248         * Cleanup: no need to hold RCU read-side lock when reading current nsproxy
 249         * Add env hostname information
 250         * Fix: lttng_statedump_process_state for each PID NS has infinite loop
 251         * lttng_statedump_process_state for each PID NS
 252         * Support the hostname context
 253         * Fix: statedump namespaced pid, tid and ppid
 254         * Fix: statedump: disable vm maps enumeration
 255         * Fix: ensure userspace accesses are done with _inatomic
 256         * Fix: vppid context should test for current nsproxy
 257         * Add MIPS system call support
 258         * Change mode of lttng-syscalls-generate-headers.sh to 755
 259         * cleanup: fix typo in syscall instrumentation header
 260         * Cleanup: remove trailing whitespace in README
 261         * trace event: introduce TP_MODULE_NOAUTOLOAD and TP_MODULE_NOINIT
 262         * LTTng: probe-statedump: add #include <linux/sched.h>
 263         * fix: signal_generate event should print utf8 for comm field
 264         * Makes write operation a parameter for tp_memcpy macro
 265         * Add coding style document
 266         * Update instrumentation/events README file
 267         * Add makefile target for preprocessor
 268         * Fix: free_event_id check should compare unsigned int with -1U
 269         * Use unsigned long type for events discarded counter
 270         * Fix: update signal instrumentation for 3.4 kernel
 271         * LTTng Modules ARM syscall instrumentation
 272         * Fix: generate header missing echo -e for escape chars
 273         * Fix: add missing uaccess.h include (for ARM)
 274         * README: Document that CONFIG_MODULES is required
 275         * Fix: README typo
 276         * Fix: document required and optional kernel config options in README
 277
 278 2012-03-29 LTTng modules 2.0.1
 279         * Fix: is_compat_task !CONFIG_COMPAT compile error on kernels >= 3.3
 280
 281 2012-03-20 LTTng modules 2.0.0
 282         * First STABLE version
 283         * Add version name
 284
 285 2012-03-20 LTTng modules 2.0.0-rc4
 286         * Update README and add version name place-holder
 287
 288 2012-03-16 LTTng modules 2.0.0-rc3
 289         * Fix clock offset 32-bit multiplication overflow
 290         * Fix : wrong assign of fd in state dump
 291         * License cleanup, ifdef namespace cleanup
 292         * Fix: ensure power of 2 check handles 64-bit size_t entirely
 293
 294 2012-03-02 LTTng modules 2.0.0-rc2
 295         * Fix: dmesg printout should not print metadata warnings
 296         * Fix: use transport name as channel name
 297         * Fix: Return -EINVAL instead of print warning if non power of 2 size/num_subbuf
 298
 299 2012-02-20 LTTng modules 2.0.0-rc1
 300         * Standardize version across toolchain
 301         * statedump: Use old macro name for kernel 2.6.38
 302
 303 2012-02-16 LTTng modules 2.0-pre15
 304         * Add timer instrumentation
 305         * fix: need to undef mainline define
 306         * fix: Include signal.h instead of irq.h for prototype match check
 307         * Add signal instrumentation
 308
 309 2012-02-16 LTTng modules 2.0-pre14
 310         * syscall tracing: sys_getcpu
 311         * Add sys_clone x86 instrumentation
 312         * statedump: fix include circular dep
 313         * Implement state dump
 314
 315 2012-02-09 LTTng modules 2.0-pre13
 316         * Update README
 317         * environment: write sysname, release, version, domain to metadata
 318         * Allow open /proc/lttng for read & write
 319
 320 2012-02-02 LTTng modules 2.0-pre12
 321         * Add x86 32/64 execve syscall instrumentation override
 322         * Remove unused defines
 323         * Add padding to ABI
 324         * Use LTTNG_KERNEL_SYM_NAME_LEN
 325         * Update version to 1.9.9
 326         * Add missing double-quotes to clock uuid
 327         * clock: read bootid as clock monotonic ID
 328         * Fix comment
 329         * Cleanup comment
 330         * clock: output clock description in metadata
 331         * Properly fix the timekeeping overflow detection
 332         * Fix init bug
 333         * rename lib-ring-buffer to lttng-lib-ring-buffer
 334         * Remove #warning
 335         * Mass rename: ltt_*/ltt-* to LTTNG_*/LTTNG-*
 336         * Update TODO
 337         * Update TODO
 338         * Remove debugfs file (keep only proc file)
 339         * Rename lttng-debugfs-abi files to lttng-abi
 340
 341 2011-12-13 LTTng modules 2.0-pre11
 342         * Fix OOPS caused by reference of config pointer
 343         * Gather detailed info from x86 64 32-bit compat syscall instrumentation
 344         * lttng lib: ring buffer move null pointer check to open
 345         * lttng lib: ring buffer remove duplicate null pointer
 346         * lttng lib: ring buffer: remove stale null-pointer
 347         * lttng wrapper: add missing include to kallsyms wrapper
 348         * lttng: cleanup one-bit signed bitfields
 349         * Add TODO file
 350         * Update symbol name length max size to 256
 351         * Fix last modifications to string_from_user operations
 352         * Document that depmod needs to be executed by hand
 353         * Fix strlen_user fault space reservation
 354         * Fix tp_copy_string_from_user handling of faults
 355         * Disable block layer tracing support for kernels < 2.6.38
 356         * lttng context: perf counter, fix 32-bit vs 64-bit field size bug
 357         * Update trace clock warning to match the current development plan
 358         * ringbuffer: make ring buffer printk less verbose
 359         * Makefile: do not run depmod manually
 360
 361 2011-09-30 LTTng modules 2.0-pre10
 362         * x86-32: override sys_mmap syscall instrumentation
 363         * Fix cast warning
 364
 365 2011-09-29 LTTng modules 2.0-pre9
 366         * x86 32 syscalls: fix !CONFIG_UID16
 367         * Use __string_from_user
 368         * Add __string_from_user
 369         * Rename "comm" context to "procname"
 370         * Fetch "type" name field for mount syscall
 371         * Create common override file for all architectures
 372         * Shrink stack size usage
 373         * Cleanup: remove unused lttng-compat-syscalls.c file
 374         * Support detailed compat syscalls on x86_64
 375         * Fix syscall table
 376         * Add disabled compat syscalls detail (work in progress)
 377         * Add config compat support for detailed x86_32 syscalls
 378         * Handle newer 3.1+ perf API
 379         * Add dummy x86-32 override headers
 380         * Bind x86-32 syscall headers
 381         * Add x86-32 syscall headers
 382         * Add check for KALLSYMS_ALL in syscall extraction script
 383         * Automate string extraction for syscalls
 384         * Automate syscall filename/pathname extraction
 385         * Add exit to ring_buffer_frontend so module is unloadable
 386         * Add sys_open filename (x86_64)
 387         * Add missing memcpy callback
 388         * copy_from_user and memset
 389         * Add missing alignment after header write
 390         * lib ring buffer: add frontend init as module_init
 391         * lib ring buffer frontend: add missing lock initialization
 392         * ARM: Set bit 0 for thumb mode in kallsyms_lookup_name returned address (missing file)
 393         * ARM: Set bit 0 for thumb mode in kallsyms_lookup_name returned address
 394         * Create override for sys_mmap
 395         * Rename syscalls -> syscall in LTTng ABI
 396         * Use different event name for compat syscalls
 397         * Allow trace syscall table override
 398         * Add dummy override files
 399         * syscall detail: add override capability
 400         * Add pointer pretty-print heuristics
 401         * Add __field_hex
 402         * Rename sys exit errno into ret
 403         * Enable detailed syscalls only for native x86_64
 404         * Use "unknown" for compat syscalls
 405         * Disable x86-64 specific detailed syscalls for now, until we deal with 32-bit compat
 406         * Fix syscall exit
 407         * Fix sys exit
 408         * Only enable detailed syscalls for x86_64 for now
 409         * Merge unknown syscall method with extended detail method
 410         * Add underscore prefix before event names
 411         * Add syscalls pointers detailed syscall tracing
 412         * Use perl for regexp
 413         * Support generation of syscall probes for those with pointers
 414         * Support detailed syscalls with 0 arguments
 415         * detailed syscall tracing (work in progress)
 416         * Expose /proc/lttng file
 417         * Implement detailed syscall event probe
 418         * Disable perf build for < 2.6.33 kernels
 419         * Syscall detail mode: generate syscall table
 420         * block instrumentation: write cmd as hex sequence
 421         * lttng-events TRACE_EVENT generator cleanup
 422         * block layer instrumentation: fix cmd field
 423         * Remove 0 args syscalls for now from type-aware syscall cb generator
 424         * Generate trace syscall table macros
 425         * Put syscall tracing without arg types back in place
 426         * Detailed system call tracing (TRACE_EVENT() generation for integer support)
 427         * lttng events probes: don't clash with "ctx" variable name
 428         * lib ring buffer must take private pointer copy before decrementing refcount
 429
 430 2011-08-16 LTTng modules 2.0-pre8
 431         * Fix metadata buffer wait/wakeup
 432
 433 2011-08-12 LTTng modules 2.0-pre7
 434         * Add missing module refcount to lttng_tracepoint_list_fops
 435         * Add license info about lib/ringbuffer/ring_buffer_mmap.c being GPLv2