ChangeLog

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