ChangeLog

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