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Filename Latest commit message Latest commit date
Adrian Hunter 56b2b649a5 perf intel-pt: Fix "context_switch event has no tid" error 
[ Upstream commit 7d537a8d2e76bc4fc71e34545ceaa463ac2cd928 ]

A context_switch event can have no tid because pids can be detached from
a task while the task is still running (in do_exit()). Note this won't
happen with per-task contexts because then tracing stops at
perf_event_exit_task()

If a task with no tid gets preempted, or a dying task gets preempted and
its parent releases it, when it subsequently gets switched back in,
Intel PT will not be able to determine what task is running and prints
an error "context_switch event has no tid". However, it is not really an
error because the task is in kernel space and the decoder can continue
to decode successfully. Fix by changing the error to be only a logged
message, and make allowance for tid == -1.

Example:

  Using 5.9-rc4 with Preemptible Kernel (Low-Latency Desktop) e.g.
  $ uname -r
  5.9.0-rc4
  $ grep PREEMPT .config
  # CONFIG_PREEMPT_NONE is not set
  # CONFIG_PREEMPT_VOLUNTARY is not set
  CONFIG_PREEMPT=y
  CONFIG_PREEMPT_COUNT=y
  CONFIG_PREEMPTION=y
  CONFIG_PREEMPT_RCU=y
  CONFIG_PREEMPT_NOTIFIERS=y
  CONFIG_DRM_I915_PREEMPT_TIMEOUT=640
  CONFIG_DEBUG_PREEMPT=y
  # CONFIG_PREEMPT_TRACER is not set
  # CONFIG_PREEMPTIRQ_DELAY_TEST is not set

Before:

  $ cat forkit.c

  #include <sys/types.h>
  #include <unistd.h>
  #include <sys/wait.h>

  int main()
  {
          pid_t child;
          int status = 0;

          child = fork();
          if (child == 0)
                  return 123;
          wait(&status);
          return 0;
  }

  $ gcc -o forkit forkit.c
  $ sudo ~/bin/perf record --kcore -a -m,64M -e intel_pt/cyc/k &
  [1] 11016
  $ taskset 2 ./forkit
  $ sudo pkill perf
  $ [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 17.262 MB perf.data ]

  [1]+  Terminated              sudo ~/bin/perf record --kcore -a -m,64M -e intel_pt/cyc/k
  $ sudo ~/bin/perf script --show-task-events --show-switch-events --itrace=iqqe-o -C 1 --ns | grep -C 2 forkit
  context_switch event has no tid
           taskset 11019 [001] 66663.270045029:          1 instructions:k:  ffffffffb1d9f844 strnlen_user+0xb4 ([kernel.kallsyms])
           taskset 11019 [001] 66663.270201816:          1 instructions:k:  ffffffffb1a83121 unmap_page_range+0x561 ([kernel.kallsyms])
            forkit 11019 [001] 66663.270327553: PERF_RECORD_COMM exec: forkit:11019/11019
            forkit 11019 [001] 66663.270420028:          1 instructions:k:  ffffffffb1db9537 __clear_user+0x27 ([kernel.kallsyms])
            forkit 11019 [001] 66663.270648704:          1 instructions:k:  ffffffffb18829e6 do_user_addr_fault+0xf6 ([kernel.kallsyms])
            forkit 11019 [001] 66663.270833163:          1 instructions:k:  ffffffffb230a825 irqentry_exit_to_user_mode+0x15 ([kernel.kallsyms])
            forkit 11019 [001] 66663.271092359:          1 instructions:k:  ffffffffb1aea3d9 lock_page_memcg+0x9 ([kernel.kallsyms])
            forkit 11019 [001] 66663.271207092: PERF_RECORD_FORK(11020:11020):(11019:11019)
            forkit 11019 [001] 66663.271234775: PERF_RECORD_SWITCH_CPU_WIDE OUT          next pid/tid: 11020/11020
            forkit 11020 [001] 66663.271238407: PERF_RECORD_SWITCH_CPU_WIDE IN           prev pid/tid: 11019/11019
            forkit 11020 [001] 66663.271312066:          1 instructions:k:  ffffffffb1a88140 handle_mm_fault+0x10 ([kernel.kallsyms])
            forkit 11020 [001] 66663.271476225: PERF_RECORD_EXIT(11020:11020):(11019:11019)
            forkit 11020 [001] 66663.271497488: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt  next pid/tid: 11019/11019
            forkit 11019 [001] 66663.271500523: PERF_RECORD_SWITCH_CPU_WIDE IN           prev pid/tid: 11020/11020
            forkit 11019 [001] 66663.271517241:          1 instructions:k:  ffffffffb24012cd error_entry+0x6d ([kernel.kallsyms])
            forkit 11019 [001] 66663.271664080: PERF_RECORD_EXIT(11019:11019):(1386:1386)

After:

  $ sudo ~/bin/perf script --show-task-events --show-switch-events --itrace=iqqe-o -C 1 --ns | grep -C 2 forkit
           taskset 11019 [001] 66663.270045029:          1 instructions:k:  ffffffffb1d9f844 strnlen_user+0xb4 ([kernel.kallsyms])
           taskset 11019 [001] 66663.270201816:          1 instructions:k:  ffffffffb1a83121 unmap_page_range+0x561 ([kernel.kallsyms])
            forkit 11019 [001] 66663.270327553: PERF_RECORD_COMM exec: forkit:11019/11019
            forkit 11019 [001] 66663.270420028:          1 instructions:k:  ffffffffb1db9537 __clear_user+0x27 ([kernel.kallsyms])
            forkit 11019 [001] 66663.270648704:          1 instructions:k:  ffffffffb18829e6 do_user_addr_fault+0xf6 ([kernel.kallsyms])
            forkit 11019 [001] 66663.270833163:          1 instructions:k:  ffffffffb230a825 irqentry_exit_to_user_mode+0x15 ([kernel.kallsyms])
            forkit 11019 [001] 66663.271092359:          1 instructions:k:  ffffffffb1aea3d9 lock_page_memcg+0x9 ([kernel.kallsyms])
            forkit 11019 [001] 66663.271207092: PERF_RECORD_FORK(11020:11020):(11019:11019)
            forkit 11019 [001] 66663.271234775: PERF_RECORD_SWITCH_CPU_WIDE OUT          next pid/tid: 11020/11020
            forkit 11020 [001] 66663.271238407: PERF_RECORD_SWITCH_CPU_WIDE IN           prev pid/tid: 11019/11019
            forkit 11020 [001] 66663.271312066:          1 instructions:k:  ffffffffb1a88140 handle_mm_fault+0x10 ([kernel.kallsyms])
            forkit 11020 [001] 66663.271476225: PERF_RECORD_EXIT(11020:11020):(11019:11019)
            forkit 11020 [001] 66663.271497488: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt  next pid/tid: 11019/11019
            forkit 11019 [001] 66663.271500523: PERF_RECORD_SWITCH_CPU_WIDE IN           prev pid/tid: 11020/11020
            forkit 11019 [001] 66663.271517241:          1 instructions:k:  ffffffffb24012cd error_entry+0x6d ([kernel.kallsyms])
            forkit 11019 [001] 66663.271664080: PERF_RECORD_EXIT(11019:11019):(1386:1386)
            forkit 11019 [001] 66663.271688752: PERF_RECORD_SWITCH_CPU_WIDE OUT          next pid/tid:    -1/-1
               :-1    -1 [001] 66663.271692086: PERF_RECORD_SWITCH_CPU_WIDE IN           prev pid/tid: 11019/11019
                :-1    -1 [001] 66663.271707466:          1 instructions:k:  ffffffffb18eb096 update_load_avg+0x306 ([kernel.kallsyms])

Fixes: 86c2786994 ("perf intel-pt: Add support for PERF_RECORD_SWITCH")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Link: http://lore.kernel.org/lkml/20200909084923.9096-3-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-10-29 09:05:38 +01:00
..
include perf probe: Support probing on offline cross-arch binary 2016-09-01 12:41:09 -03:00
intel-pt-decoder perf intel-pt: Fix sample timestamp wrt non-taken branches 2019-05-25 18:26:50 +02:00
libunwind perf unwind: Fix wrongly used regs for aarch64 unwind 2016-06-23 10:30:31 -03:00
scripting-engines perf scripting perl: Fix compile error with some perl5 versions 2017-07-15 12:16:14 +02:00
alias.c perf tools: Remove needless includes from cache.h 2016-07-12 15:19:58 -03:00
annotate.c perf annotate: Use asprintf when formatting objdump command line 2020-07-31 16:44:07 +02:00
annotate.h perf annotate: Pass the symbol's map/dso to the instruction parsers 2016-09-20 12:28:29 -03:00
auxtrace.c perf auxtrace: Define auxtrace record alignment 2019-03-23 13:19:53 +01:00
auxtrace.h perf auxtrace: Define auxtrace record alignment 2019-03-23 13:19:53 +01:00
block-range.c perf annotate: Add branch stack / basic block 2016-09-08 13:44:03 -03:00
block-range.h perf annotate: Add branch stack / basic block 2016-09-08 13:44:03 -03:00
bpf-loader.c perf bpf: Fix typo: "ehough" -> "enough" 2016-08-23 17:06:39 -03:00
bpf-loader.h perf bpf: Rename bpf__foreach_tev() to bpf__foreach_event() 2016-07-13 23:09:03 -03:00
bpf-prologue.c
bpf-prologue.h
Build perf jit: Enable jitdump support without dwarf 2017-01-26 08:24:36 +01:00
build-id.c perf build-id: Fix memory leak in print_sdt_events() 2019-04-20 09:07:48 +02:00
build-id.h perf probe: Support @BUILDID or @FILE suffix for SDT events 2016-07-13 23:09:08 -03:00
cache.h perf tools: Remove needless includes from cache.h 2016-07-12 15:19:58 -03:00
call-path.c perf tools: Refactor code to move call path handling out of thread-stack 2016-05-06 13:00:43 -03:00
call-path.h perf tools: Refactor code to move call path handling out of thread-stack 2016-05-06 13:00:43 -03:00
callchain.c perf callchain: Reference count maps 2017-03-12 06:41:47 +01:00
callchain.h perf callchain: Reference count maps 2017-03-12 06:41:47 +01:00
cgroup.c perf tools: Fix snprint warnings for gcc 8 2020-07-31 16:44:07 +02:00
cgroup.h perf tools: Remove needless 'extern' from function prototypes 2016-03-23 15:06:35 -03:00
cloexec.c perf tools: Introduce weak alternative to sched_getcpu() 2016-07-12 15:20:34 -03:00
cloexec.h perf tools: Remove needless 'extern' from function prototypes 2016-03-23 15:06:35 -03:00
color.c perf tools: Uninline scnprintf() and vscnprint() 2016-07-12 15:20:24 -03:00
color.h
comm.c
comm.h
config.c perf config: Fix a memory leak in collect_config() 2019-04-20 09:07:48 +02:00
config.h perf config: Introduce new init() and exit() 2016-06-23 17:20:04 -03:00
counts.c
counts.h
cpumap.c perf tools: Handle TOPOLOGY headers with no CPU 2019-03-13 14:04:55 -07:00
cpumap.h perf cpu_map: Add more helpers 2016-07-18 19:42:47 -03:00
cs-etm.h perf tools: Add coresight etm PMU record capabilities 2016-09-22 12:19:40 -03:00
ctype.c perf ui/stdio: Align column header for hierarchy output 2016-02-24 20:21:12 -03:00
data-convert-bt.c perf data: Fix 'strncat may truncate' build failure with recent gcc 2019-06-22 08:17:23 +02:00
data-convert-bt.h perf data ctf: Pass convert options through opts structure 2016-06-28 10:54:55 -03:00
data-convert.h perf data ctf: Add 'all' option 2016-06-28 10:54:56 -03:00
data.c tools: Introduce str_error_r() 2016-07-12 15:19:47 -03:00
data.h perf data: Add perf_data_file__switch() helper 2016-04-14 08:57:54 -03:00
db-export.c perf thread: Adopt get_main_thread from db-export.c 2016-05-30 12:41:43 -03:00
db-export.h perf script: Add call path id to exported sample in db export 2016-05-06 13:00:53 -03:00
debug.c tools: Introduce tools/include/linux/time64.h for *SEC_PER_*SEC macros 2016-08-23 15:37:33 -03:00
debug.h tools: Introduce str_error_r() 2016-07-12 15:19:47 -03:00
demangle-java.c perf symbols: add Java demangling support 2016-02-05 09:46:45 -03:00
demangle-java.h perf symbols: add Java demangling support 2016-02-05 09:46:45 -03:00
demangle-rust.c perf symbols: Add Rust demangling 2016-07-12 16:12:38 -03:00
demangle-rust.h perf symbols: Add Rust demangling 2016-07-12 16:12:38 -03:00
drv_configs.c perf pmu: Push configuration down to PMU driver 2016-09-22 12:19:41 -03:00
drv_configs.h perf pmu: Push configuration down to PMU driver 2016-09-22 12:19:41 -03:00
dso.c perf symbols: Fix debuginfo search for Ubuntu 2020-06-20 10:24:22 +02:00
dso.h perf symbols: Fix debuginfo search for Ubuntu 2020-06-20 10:24:22 +02:00
dwarf-aux.c perf probe: Fix to show function entry line as probe-able 2020-01-04 13:40:28 +01:00
dwarf-aux.h perf probe: Fix to show function entry line as probe-able 2020-01-04 13:40:28 +01:00
dwarf-regs.c perf probe: Support probing on offline cross-arch binary 2016-09-01 12:41:09 -03:00
env.c perf header: Transform nodes string info to struct 2016-07-04 19:39:01 -03:00
env.h perf header: Transform nodes string info to struct 2016-07-04 19:39:01 -03:00
event.c perf cpu_map: Align cpu map synthesized events properly. 2018-11-13 11:16:48 -08:00
event.h Revert "perf tools: event.h needs asm/perf_regs.h" 2016-07-25 11:58:56 -03:00
evlist.c perf tools: Experiment with cppcheck 2016-10-03 11:24:13 -03:00
evlist.h perf evlist: Make {pause,resume} internal helpers 2016-07-15 17:27:50 -03:00
evsel.c perf evsel: Make perf_evsel__name() accept a NULL argument 2019-08-04 09:33:20 +02:00
evsel.h perf evsel: Add support for address filters 2016-09-29 11:16:59 -03:00
evsel_fprintf.c perf script: Fix vanished idle symbols 2016-09-29 11:17:00 -03:00
find-vdso-map.c
genelf.c perf jit: Enable jitdump support without dwarf 2017-01-26 08:24:36 +01:00
genelf.h perf jit: Enable jitdump support without dwarf 2017-01-26 08:24:36 +01:00
genelf_debug.c perf jit: add source line info support 2016-02-05 12:33:09 -03:00
generate-cmdlist.sh perf tools: Do not show trace command if it's not compiled in 2016-01-08 12:46:17 -03:00
group.h perf stat: Basic support for TopDown in perf stat 2016-06-06 17:04:15 -03:00
header.c perf tools: Fix segfault in cpu_cache_level__read() 2019-10-17 13:42:15 -07:00
header.h perf pmu: Use pmu_events table to create aliases 2016-10-03 19:58:00 -03:00
help-unknown-cmd.c perf tools: Uninline scnprintf() and vscnprint() 2016-07-12 15:20:24 -03:00
help-unknown-cmd.h perf tools: Move help_unknown_cmd() to its own file 2015-12-14 12:30:37 -03:00
hist.c perf tools: Fix time sorting 2019-11-12 19:15:43 +01:00
hist.h perf hists: Fix variable name's inconsistency in hists__for_each() macro 2020-01-23 08:19:40 +01:00
intel-bts.c perf symbols: Remove symbol_filter_t machinery 2016-09-05 11:14:50 -03:00
intel-bts.h
intel-pt.c perf intel-pt: Fix "context_switch event has no tid" error 2020-10-29 09:05:38 +01:00
intel-pt.h perf intel-pt: Record address filter in AUXTRACE_INFO event 2016-09-29 11:17:05 -03:00
intlist.c
intlist.h perf intlist: Rename for_each() macros to for_each_entry() 2016-06-23 11:39:19 -03:00
jit.h perf tools: Remove needless 'extern' from function prototypes 2016-03-23 15:06:35 -03:00
jitdump.c perf inject jit: Fix JIT_CODE_MOVE filename 2019-10-17 13:42:43 -07:00
jitdump.h perf jit: Add support for using TSC as a timestamp 2016-04-01 18:42:55 -03:00
kvm-stat.h perf kvm/powerpc: Port perf kvm stat to powerpc 2016-01-29 17:49:54 -03:00
levenshtein.c perf tools: Remove needless includes from cache.h 2016-07-12 15:19:58 -03:00
levenshtein.h
llvm-utils.c perf llvm: Don't access out-of-scope array 2019-10-17 13:42:42 -07:00
llvm-utils.h perf llvm: Allow dump llvm output object file using llvm.dump-obj 2016-06-21 13:18:34 -03:00
lzma.c perf tools: Fix error handling of lzma decompression 2016-08-24 11:20:58 -03:00
machine.c perf record: Fix module size on s390 2019-08-25 10:51:21 +02:00
machine.h perf record: Fix module size on s390 2019-08-25 10:51:21 +02:00
map.c perf map: Fix off by one in strncpy() size argument 2020-04-02 17:20:41 +02:00
map.h perf symbols: Remove symbol_filter_t machinery 2016-09-05 11:14:50 -03:00
mem-events.c perf mem: Add --ldlat option 2016-06-15 10:35:27 -03:00
mem-events.h perf mem: Add --ldlat option 2016-06-15 10:35:27 -03:00
ordered-events.c perf inject: Copy events when reordering events in pipe mode 2018-03-22 09:17:51 +01:00
ordered-events.h perf ordered_events: Introduce reinit() 2016-04-14 08:57:54 -03:00
parse-branch-options.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
parse-branch-options.h
parse-events.c perf tools: Fix snprint warnings for gcc 8 2020-07-31 16:44:07 +02:00
parse-events.h perf list: Support long jevents descriptions 2016-10-03 21:35:47 -03:00
parse-events.l perf jevents: Handle events including .c and .o 2016-10-17 11:24:18 -03:00
parse-events.y perf tools: Fix pmu events parsing rule 2018-08-03 07:55:13 +02:00
parse-regs-options.c perf subcmd: Create subcmd library 2015-12-17 14:27:14 -03:00
parse-regs-options.h
path.c perf tools: Remove needless includes from cache.h 2016-07-12 15:19:58 -03:00
PERF-VERSION-GEN
perf_regs.c perf tools: Fix perf regs mask generation 2016-05-11 21:54:06 +10:00
perf_regs.h perf regs: Make perf_reg_name() return "unknown" instead of NULL 2020-01-04 13:41:02 +01:00
pmu.c perf test: Free formats for perf pmu parse test 2020-09-23 08:46:15 +02:00
pmu.h perf test: Free formats for perf pmu parse test 2020-09-23 08:46:15 +02:00
pmu.l
pmu.y
probe-event.c perf probe: Fix to check blacklist address correctly 2020-07-31 16:44:07 +02:00
probe-event.h perf probe: Add helper function to check if probe with variable 2016-09-01 12:42:25 -03:00
probe-file.c perf probe: Fix unchecked usage of strncpy() 2019-02-12 19:44:55 +01:00
probe-file.h perf probe: Add supported for type casting by the running kernel 2016-08-23 17:03:31 -03:00
probe-finder.c perf probe: Fix memory leakage when the probe point is not found 2020-08-26 10:29:03 +02:00
probe-finder.h perf probe: Fix to probe on gcc generated functions in modules 2017-07-05 14:40:27 +02:00
pstack.c
pstack.h
python-ext-sources tools lib api: Add str_error_c to libapi 2016-07-27 17:16:43 -03:00
python.c perf tools: Make is_printable_array global 2016-07-18 19:49:47 -03:00
quote.c perf quote: Disentangle headers 2016-07-12 15:19:55 -03:00
quote.h perf quote: Disentangle headers 2016-07-12 15:19:55 -03:00
rb_resort.h perf rb_resort: Rename for_each() macros to for_each_entry() 2016-06-23 11:35:07 -03:00
rblist.c
rblist.h
record.c perf evlist: Rename for_each() macros to for_each_entry() 2016-06-23 11:26:15 -03:00
session.c perf session: Don't rely on evlist in pipe mode 2018-03-22 09:17:51 +01:00
session.h perf evsel: Move some methods from session.[ch] to evsel.[ch] 2016-04-13 10:11:52 -03:00
setup.py perf tools: Fix python extension build 2016-02-29 11:18:25 -03:00
sort.c perf util: Fix memory leak of prefix_if_not_in 2020-10-01 20:40:14 +02:00
sort.h perf tools: Make several sorting functions global 2016-09-22 13:08:57 -03:00
srcline.c perf: Make perf able to build with latest libbfd 2020-07-31 16:44:07 +02:00
stat-shadow.c perf stat: Add computation of TopDown formulas 2016-06-06 17:04:16 -03:00
stat.c perf stat: Zero all the 'ena' and 'run' array slot stats for interval mode 2020-07-22 09:10:51 +02:00
stat.h perf stat: Reset previous counts on repeat with interval 2019-10-17 13:42:17 -07:00
strbuf.c perf strbuf: Remove redundant va_end() in strbuf_addv() 2020-01-04 13:41:05 +01:00
strbuf.h perf tools: Experiment with cppcheck 2016-10-03 11:24:13 -03:00
strfilter.c tools strfilter: Use __fallthrough 2017-07-15 12:16:12 +02:00
strfilter.h
string.c tools string: Use __fallthrough in perf_atoll() 2017-07-15 12:16:12 +02:00
strlist.c perf tools: Add file_only config option to strlist 2016-01-12 12:42:07 -03:00
strlist.h perf tools: Rename strlist_for_each() macros to for_each_entry() 2016-06-23 11:35:01 -03:00
svghelper.c perf svghelper: Fix unchecked usage of strncpy() 2019-01-26 09:38:34 +01:00
svghelper.h perf tools: Remove needless 'extern' from function prototypes 2016-03-23 15:06:35 -03:00
symbol-elf.c perf kcore_copy: Fix module map when there are no modules loaded 2020-10-01 20:40:14 +02:00
symbol-minimal.c perf symbols: Remove symbol_filter_t machinery 2016-09-05 11:14:50 -03:00
symbol.c perf symbols: Fix debuginfo search for Ubuntu 2020-06-20 10:24:22 +02:00
symbol.h perf record: Fix wrong size in perf_record_mmap for last kernel module 2019-08-25 10:51:20 +02:00
symbol_fprintf.c perf symbols: Move fprintf routines to separate object file 2016-04-14 19:46:53 -03:00
syscalltbl.c perf tools: Build syscall table .c header from kernel's syscall_64.tbl 2016-04-08 09:58:14 -03:00
syscalltbl.h perf tools: Allow generating per-arch syscall table arrays 2016-04-08 09:58:14 -03:00
target.c perf target: str_error_r() always returns the buffer it receives 2016-07-29 11:54:35 -03:00
target.h
term.c perf tools: Move term functions out of util.c 2015-12-09 13:42:02 -03:00
term.h perf tools: Move term functions out of util.c 2015-12-09 13:42:02 -03:00
thread-stack.c perf script: Add callindent option 2016-06-23 17:04:26 -03:00
thread-stack.h perf script: Add callindent option 2016-06-23 17:04:26 -03:00
thread.c perf db-export: Fix thread__exec_comm() 2019-08-25 10:51:20 +02:00
thread.h perf unwind: Move unwind__prepare_access from thread_new into thread__insert_map 2016-06-07 12:08:52 -03:00
thread_map.c perf thread_map: Correctly size buffer used with dirent->dt_name 2017-07-15 12:16:13 +02:00
thread_map.h perf thread_map: Make new_by_tid_str constructor public 2016-04-13 10:11:51 -03:00
tool.h perf tools: Add time conversion event 2016-03-31 10:52:24 -03:00
top.c
top.h perf top: Use machine->kptr_restrict_warned 2016-05-20 11:43:55 -03:00
trace-event-info.c perf tools: Cleanup trace-event-info 'tdata' leak 2018-11-13 11:16:49 -08:00
trace-event-parse.c irq_poll: make blk-iopoll available outside the block layer 2015-12-11 11:52:24 -08:00
trace-event-read.c perf tools: Free temporary 'sys' string in read_event_files() 2018-11-13 11:16:49 -08:00
trace-event-scripting.c perf scripting: Avoid leaking the scripting_context variable 2017-01-26 08:24:36 +01:00
trace-event.c perf tools: Introduce trace_event__tp_format_id() 2016-07-12 16:14:52 -03:00
trace-event.h perf tools: Introduce trace_event__tp_format_id() 2016-07-12 16:14:52 -03:00
trigger.h perf tools: Fix trigger class trigger_on() 2018-03-18 11:18:50 +01:00
tsc.c perf tools: Use 64-bit shifts with (TSC) time conversion 2016-03-08 10:11:18 +01:00
tsc.h perf jit: Add support for using TSC as a timestamp 2016-04-01 18:42:55 -03:00
unwind-libdw.c perf report: Include partial stacks unwound with libdw 2019-02-20 10:18:30 +01:00
unwind-libdw.h
unwind-libunwind-local.c perf report: Fix off-by-one for non-activation frames 2018-04-13 19:48:05 +02:00
unwind-libunwind.c perf unwind: Add initialized arg into unwind__prepare_access 2016-07-04 20:27:12 -03:00
unwind.h perf unwind: Add initialized arg into unwind__prepare_access 2016-07-04 20:27:12 -03:00
usage.c perf tools: Simplify die() mechanism 2016-03-23 12:32:31 -03:00
util.c perf tools: Fix copyfile_offset update of output offset 2018-04-13 19:48:31 +02:00
util.h perf tools: No need to include bitops.h in util.h 2019-05-31 06:48:13 -07:00
values.c
values.h
vdso.c perf tools: Find right DSO taking into account if binary is 32 or 64-bit 2016-06-23 10:25:58 -03:00
vdso.h
xyarray.c
xyarray.h
zlib.c