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Stephane Eranian d99c22eabe perf record: Add num-synthesize-threads option 
To control degree of parallelism of the synthesize_mmap() code which
is scanning /proc/PID/task/PID/maps and can be time consuming.
Mimic perf top way of handling the option.
If not specified will default to 1 thread, i.e. default behavior before
this option.

On a desktop computer the processing of /proc/PID/task/PID/maps isn't
slow enough to warrant parallel processing and the thread creation has
some cost - hence the default of 1. On a loaded server with
>100 cores it is possible to see synthesis times in the order of
seconds and in this case having the option is desirable.

As the processing is a synchronization point, it is legitimate to worry if
Amdahl's law will apply to this patch. Profiling with this patch in
place:
https://lore.kernel.org/lkml/20200415054050.31645-4-irogers@google.com/
shows:
...
      - 32.59% __perf_event__synthesize_threads
         - 32.54% __event__synthesize_thread
            + 22.13% perf_event__synthesize_mmap_events
            + 6.68% perf_event__get_comm_ids.constprop.0
            + 1.49% process_synthesized_event
            + 1.29% __GI___readdir64
            + 0.60% __opendir
...
That is the processing is 1.49% of execution time and there is plenty to
make parallel. This is shown in the benchmark in this patch:

https://lore.kernel.org/lkml/20200415054050.31645-2-irogers@google.com/

  Computing performance of multi threaded perf event synthesis by
  synthesizing events on CPU 0:
   Number of synthesis threads: 1
     Average synthesis took: 127729.000 usec (+- 3372.880 usec)
     Average num. events: 21548.600 (+- 0.306)
     Average time per event 5.927 usec
   Number of synthesis threads: 2
     Average synthesis took: 88863.500 usec (+- 385.168 usec)
     Average num. events: 21552.800 (+- 0.327)
     Average time per event 4.123 usec
   Number of synthesis threads: 3
     Average synthesis took: 83257.400 usec (+- 348.617 usec)
     Average num. events: 21553.200 (+- 0.327)
     Average time per event 3.863 usec
   Number of synthesis threads: 4
     Average synthesis took: 75093.000 usec (+- 422.978 usec)
     Average num. events: 21554.200 (+- 0.200)
     Average time per event 3.484 usec
   Number of synthesis threads: 5
     Average synthesis took: 64896.600 usec (+- 353.348 usec)
     Average num. events: 21558.000 (+- 0.000)
     Average time per event 3.010 usec
   Number of synthesis threads: 6
     Average synthesis took: 59210.200 usec (+- 342.890 usec)
     Average num. events: 21560.000 (+- 0.000)
     Average time per event 2.746 usec
   Number of synthesis threads: 7
     Average synthesis took: 54093.900 usec (+- 306.247 usec)
     Average num. events: 21562.000 (+- 0.000)
     Average time per event 2.509 usec
   Number of synthesis threads: 8
     Average synthesis took: 48938.700 usec (+- 341.732 usec)
     Average num. events: 21564.000 (+- 0.000)
     Average time per event 2.269 usec

Where average time per synthesized event goes from 5.927 usec with 1
thread to 2.269 usec with 8. This isn't a linear speed up as not all of
synthesize code has been made parallel. If the synthesis time was about
10 seconds then using 8 threads may bring this down to less than 4.

Signed-off-by: Stephane Eranian <eranian@google.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tony Jones <tonyj@suse.de>
Cc: yuzhoujian <yuzhoujian@didichuxing.com>
Link: http://lore.kernel.org/lkml/20200422155038.9380-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-23 11:10:41 -03:00
..
c++ perf clang: Fix build with Clang 9 2020-01-14 12:02:19 -03:00
cs-etm-decoder perf tools: Remove util.h from where it is not needed 2019-09-20 09:19:20 -03:00
include perf bench: Update the copies of x86's mem{cpy,set}_64.S 2019-12-02 11:40:57 -03:00
intel-pt-decoder perf intel-pt: Use shared x86 insn decoder 2019-08-31 22:27:52 -03:00
libunwind perf tools: Remove debug.h from places where it is not needed 2019-09-20 09:19:20 -03:00
scripting-engines perf script report: Fix SEGFAULT when using DWARF mode 2020-04-03 09:39:53 -03:00
affinity.c perf affinity: Add infrastructure to save/restore affinity 2019-11-28 08:08:38 -03:00
affinity.h perf affinity: Add infrastructure to save/restore affinity 2019-11-28 08:08:38 -03:00
annotate.c perf annotate: Add basic support for bpf_image 2020-04-16 12:19:06 -03:00
annotate.h perf report: Support interactive annotation of code without symbols 2020-03-24 09:36:33 -03:00
archinsn.h perf script: Support insn output for normal samples 2019-03-11 11:56:02 -03:00
arm-spe-pkt-decoder.c
arm-spe-pkt-decoder.h
arm-spe.c perf arm-spe: Implement ->evsel_is_auxtrace() callback 2020-04-16 12:19:15 -03:00
arm-spe.h
auxtrace.c perf evsel: Move and globalize perf_evsel__find_pmu() and perf_evsel__is_aux_event() 2020-04-18 09:04:32 -03:00
auxtrace.h perf auxtrace: Add an option to synthesize callchains for regular events 2020-04-16 12:19:15 -03:00
block-info.c perf block-info: Support color ops to print block percents in color 2020-03-09 21:43:25 -03:00
block-info.h perf block-info: Allow selecting which columns to report and its order 2020-03-09 21:43:25 -03:00
block-range.c
block-range.h
bpf-event.c perf tools: Synthesize bpf_trampoline/dispatcher ksymbol event 2020-04-16 12:19:06 -03:00
bpf-event.h perf tools: Move event synthesizing routines to separate header 2019-09-20 09:19:22 -03:00
bpf-loader.c libperf: Add perf_evlist__first()/last() functions 2019-09-25 09:51:48 -03:00
bpf-loader.h perf evlist: Rename struct perf_evlist to struct evlist 2019-07-29 18:34:42 -03:00
bpf-prologue.c perf debug: Remove needless include directives from debug.h 2019-08-31 19:10:19 -03:00
bpf-prologue.h
bpf_map.c
bpf_map.h
branch.c perf tools: Remove util.h from where it is not needed 2019-09-20 09:19:20 -03:00
branch.h perf callchain: Stitch LBR call stack 2020-04-18 09:05:01 -03:00
Build perf expr: Move expr lexer to flex 2020-03-09 21:43:24 -03:00
build-id.c perf copyfile: Move copyfile routines to separate files 2019-09-25 09:51:49 -03:00
build-id.h perf evsel: Rename struct perf_evsel to struct evsel 2019-07-29 18:34:42 -03:00
cache.h
cacheline.c perf tools: Remove perf.h from source files not needing it 2019-08-29 17:38:32 -03:00
cacheline.h perf cacheline: Move cacheline related routines to separate files 2019-08-26 11:58:29 -03:00
call-path.c perf tools: Use list_del_init() more thorougly 2019-07-09 10:13:27 -03:00
call-path.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288 2019-06-05 17:36:37 +02:00
callchain.c perf map_symbol: Rename ms->mg to ms->maps 2019-11-26 11:07:46 -03:00
callchain.h perf callchain: Stitch LBR call stack 2020-04-18 09:05:01 -03:00
cap.c perf tools: Add helpers to use capabilities if present 2019-08-14 10:48:39 -03:00
cap.h perf tools: Support CAP_PERFMON capability 2020-04-16 12:19:08 -03:00
cgroup.c perf cgroup: Avoid needless closing of unopened fd 2020-04-22 10:01:33 -03:00
cgroup.h perf cgroup: Maintain cgroup hierarchy 2020-04-03 09:37:55 -03:00
cloexec.c perf tools: Remove util.h from where it is not needed 2019-09-20 09:19:20 -03:00
cloexec.h
color.c perf tools: Remove needless evlist.h include directives 2019-08-31 22:24:10 -03:00
color.h
color_config.c perf tools: Remove needless evlist.h include directives 2019-08-31 22:24:10 -03:00
comm.c tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
comm.h
compress.h perf report: Implement perf.data record decompression 2019-05-15 16:36:49 -03:00
config.c perf config: Introduce perf_config_u8() 2020-02-27 10:44:54 -03:00
config.h perf config: Introduce perf_config_u8() 2020-02-27 10:44:54 -03:00
copyfile.c perf tools: Fix mode setting in copyfile_mode_ns() 2019-10-15 12:05:18 -03:00
copyfile.h perf copyfile: Move copyfile routines to separate files 2019-09-25 09:51:49 -03:00
counts.c perf evsel: Rename struct perf_evsel to struct evsel 2019-07-29 18:34:42 -03:00
counts.h perf counts: Add missing headers needed for types used 2019-08-22 17:16:56 -03:00
cpu-set-sched.h
cpumap.c perf cpumap: Fix snprintf overflow check 2020-03-24 10:36:00 -03:00
cpumap.h perf evsel: Add iterator to iterate over events ordered by CPU 2019-11-29 12:20:45 -03:00
cputopo.c perf cpumap: Remove needless includes from cpumap.h 2019-08-22 17:16:57 -03:00
cputopo.h perf env: Remove env.h from other headers where just a fwd decl is needed 2019-08-31 19:10:40 -03:00
cs-etm.c perf cs-etm: Implement ->evsel_is_auxtrace() callback 2020-04-16 12:19:15 -03:00
cs-etm.h perf auxtrace: Uninline functions that touch perf_session 2019-08-31 22:24:10 -03:00
data-convert-bt.c perf session: Return error code for perf_session__new() function on failure 2019-09-20 15:58:11 -03:00
data-convert-bt.h
data-convert.h
data.c perf record: Put a copy of kcore into the perf.data directory 2019-11-06 15:43:05 -03:00
data.h perf record: Put a copy of kcore into the perf.data directory 2019-11-06 15:43:05 -03:00
db-export.c perf addr_location: Rename al->mg to al->maps 2019-11-26 11:07:46 -03:00
db-export.h perf evsel: Rename struct perf_evsel to struct evsel 2019-07-29 18:34:42 -03:00
debug.c perf tool: Provide an option to print perf_event_open args and return value 2019-11-12 08:32:27 -03:00
debug.h perf tool: Provide an option to print perf_event_open args and return value 2019-11-12 08:32:27 -03:00
demangle-java.c perf tools: Remove debug.h from places where it is not needed 2019-09-20 09:19:20 -03:00
demangle-java.h
demangle-rust.c perf tools: Remove util.h from where it is not needed 2019-09-20 09:19:20 -03:00
demangle-rust.h
dso.c perf annotate: Add basic support for bpf_image 2020-04-16 12:19:06 -03:00
dso.h perf annotate: Add basic support for bpf_image 2020-04-16 12:19:06 -03:00
dsos.c perf dso: Fix dso comparison 2020-03-24 10:57:38 -03:00
dsos.h perf dso: Move dso_id from 'struct map' to 'struct dso' 2019-11-19 19:12:26 -03:00
dump-insn.c
dump-insn.h
dwarf-aux.c perf probe: Show correct statement line number by perf probe -l 2019-11-18 18:56:27 -03:00
dwarf-aux.h perf probe: Fix to show function entry line as probe-able 2019-11-06 15:43:06 -03:00
dwarf-regs.c perf tools: Remove util.h from where it is not needed 2019-09-20 09:19:20 -03:00
env.c perf cgroup: Maintain cgroup hierarchy 2020-04-03 09:37:55 -03:00
env.h perf header: Support CPU PMU capabilities 2020-04-18 09:05:00 -03:00
event.c perf script: Avoid NULL dereference on symbol 2020-04-22 10:59:02 -03:00
event.h perf tools: Basic support for CGROUP event 2020-04-03 09:37:55 -03:00
events_stats.h perf tools: Move 'struct events_stats' and prototypes to separate header 2019-08-31 22:24:10 -03:00
evlist.c perf evlist: Allow multiple read formats 2020-04-18 09:05:00 -03:00
evlist.h perf stat: Use affinity for opening events 2019-11-29 12:20:45 -03:00
evsel.c perf stat: Force error in fallback on :k events 2020-04-18 09:05:00 -03:00
evsel.h perf evsel: Move and globalize perf_evsel__find_pmu() and perf_evsel__is_aux_event() 2020-04-18 09:04:32 -03:00
evsel_config.h perf parse: Copy string to perf_evsel_config_term 2020-01-30 11:55:02 +01:00
evsel_fprintf.c perf callchain: Use 'struct map_symbol' in 'struct callchain_cursor_node' 2019-11-12 08:20:53 -03:00
evsel_fprintf.h perf evsel: Introduce evsel_fprintf.h 2019-09-25 16:26:34 -03:00
evswitch.c perf evswitch: Add hint when not finding specified on/off events 2019-08-15 12:26:13 -03:00
evswitch.h perf evswitch: Introduce init() method to set the on/off evsels from the command line 2019-08-15 12:25:55 -03:00
expr.c perf expr: Add expr_scanner_ctx object 2020-04-16 12:19:13 -03:00
expr.h perf expr: Add expr_scanner_ctx object 2020-04-16 12:19:13 -03:00
expr.l perf expr: Add expr_scanner_ctx object 2020-04-16 12:19:13 -03:00
expr.y perf expr: Add expr_ prefix for parse_ctx and parse_id 2020-04-16 12:19:13 -03:00
find-map.c
fncache.c perf pmu: Use file system cache to optimize sysfs access 2019-11-28 08:08:38 -03:00
fncache.h perf pmu: Use file system cache to optimize sysfs access 2019-11-28 08:08:38 -03:00
genelf.c perf jit: Move test functionality in to a test 2019-11-29 12:20:45 -03:00
genelf.h perf jvmti: Include JVMTI support for s390 2019-09-25 16:26:41 -03:00
genelf_debug.c perf tools: Remove perf.h from source files not needing it 2019-08-29 17:38:32 -03:00
generate-cmdlist.sh
get_current_dir_name.c perf tools: Remove duplicate headers 2019-08-26 11:58:29 -03:00
get_current_dir_name.h perf tools: Move get_current_dir_name() cond prototype out of util.h 2019-07-09 10:13:26 -03:00
group.h
header.c perf header: Support CPU PMU capabilities 2020-04-18 09:05:00 -03:00
header.h perf header: Support CPU PMU capabilities 2020-04-18 09:05:00 -03:00
help-unknown-cmd.c tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
help-unknown-cmd.h
hist.c perf hist: Add fast path for duplicate entries check 2020-04-18 09:05:01 -03:00
hist.h perf report: Add 'cgroup' sort key 2020-04-03 09:37:55 -03:00
intel-bts.c perf intel-bts: Implement ->evsel_is_auxtrace() callback 2020-04-16 12:19:15 -03:00
intel-bts.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288 2019-06-05 17:36:37 +02:00
intel-pt.c perf callchain: Stitch LBR call stack 2020-04-18 09:05:01 -03:00
intel-pt.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288 2019-06-05 17:36:37 +02:00
intlist.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 305 2019-06-05 17:37:04 +02:00
intlist.h
jit.h
jitdump.c perf inject jit: Fix JIT_CODE_MOVE filename 2019-09-30 17:29:49 -03:00
jitdump.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 480 2019-06-19 17:09:51 +02:00
kvm-stat.h perf kvm: Add arch neutral function to choose event for perf kvm record 2019-09-20 10:28:26 -03:00
levenshtein.c
levenshtein.h
llvm-utils.c perf llvm: Add debug hint message about missing kernel-devel package 2020-03-04 10:34:10 -03:00
llvm-utils.h perf tools: Remove debug.h from header files not needing it 2019-08-29 17:38:32 -03:00
lzma.c perf tools: Remove util.h from where it is not needed 2019-09-20 09:19:20 -03:00
machine.c perf callchain: Stitch LBR call stack 2020-04-18 09:05:01 -03:00
machine.h perf tools: Basic support for CGROUP event 2020-04-03 09:37:55 -03:00
map.c perf map: Use strstarts() to look for Android libraries 2020-03-11 10:48:44 -03:00
map.h perf maps: Merge 'struct maps' with 'struct map_groups' 2019-11-26 11:07:46 -03:00
map_symbol.h perf map_symbol: Rename ms->mg to ms->maps 2019-11-26 11:07:46 -03:00
maps.h perf maps: Rename map_groups.h to maps.h 2019-11-26 11:07:46 -03:00
mem-events.c pref tools: Make 'struct addr_map_symbol' contain 'struct map_symbol' 2019-11-12 08:20:53 -03:00
mem-events.h perf symbols: Move mem_info and branch_info out of symbol.h 2019-08-31 22:27:48 -03:00
mem2node.c perf env: Remove env.h from other headers where just a fwd decl is needed 2019-08-31 19:10:40 -03:00
mem2node.h perf env: Remove env.h from other headers where just a fwd decl is needed 2019-08-31 19:10:40 -03:00
memswap.c
memswap.h perf memswap: Adopt 'struct u64_swap' from evsel.h 2019-09-20 09:19:22 -03:00
metricgroup.c perf metrictroup: Split the metricgroup__add_metric function 2020-04-16 12:19:13 -03:00
metricgroup.h perf metricgroup: Scale the metric result 2019-08-31 22:27:52 -03:00
mmap.c perf record: Fix binding of AIO user space buffers to nodes 2020-03-12 11:32:46 -03:00
mmap.h perf record: Adapt affinity to machines with #CPUs > 1K 2020-01-06 11:46:09 -03:00
namespaces.c perf tools: Move event synthesizing routines to separate .c file 2019-09-20 10:28:21 -03:00
namespaces.h perf tools: Move event synthesizing routines to separate .c file 2019-09-20 10:28:21 -03:00
ordered-events.c perf debug: Remove needless include directives from debug.h 2019-08-31 19:10:19 -03:00
ordered-events.h
parse-branch-options.c perf debug: Remove needless include directives from debug.h 2019-08-31 19:10:19 -03:00
parse-branch-options.h
parse-events.c perf parse-events: Fix 3 use after frees found with clang ASAN 2020-03-23 11:08:29 -03:00
parse-events.h perf record: Add aux-sample-size config term 2019-11-22 10:48:13 -03:00
parse-events.l perf parser: Add support to specify rXXX event with pmu 2020-04-18 09:05:00 -03:00
parse-events.y perf parser: Add support to specify rXXX event with pmu 2020-04-18 09:05:00 -03:00
parse-regs-options.c perf tools: Avoid 'sample_reg_masks' being const + weak 2019-10-10 09:29:33 -03:00
parse-regs-options.h perf parse-regs: Split parse_regs 2019-05-15 16:36:49 -03:00
path.c perf tools: Remove needless evlist.h include directives 2019-08-31 22:24:10 -03:00
path.h perf tools: Remove needless evlist.h include directives 2019-08-31 22:24:10 -03:00
perf-hooks-list.h
perf-hooks.c perf tools: Remove util.h from where it is not needed 2019-09-20 09:19:20 -03:00
perf-hooks.h
PERF-VERSION-GEN perf version: Append 12 git SHA chars to the version string 2019-05-28 18:37:44 -03:00
perf_event_attr_fprintf.c perf tools: Basic support for CGROUP event 2020-04-03 09:37:55 -03:00
perf_regs.c perf tools: Avoid 'sample_reg_masks' being const + weak 2019-10-10 09:29:33 -03:00
perf_regs.h perf regs: Make perf_reg_name() return "unknown" instead of NULL 2019-11-28 08:08:38 -03:00
pmu.c perf pmu: Add support for PMU capabilities 2020-04-18 09:05:00 -03:00
pmu.h perf pmu: Add support for PMU capabilities 2020-04-18 09:05:00 -03:00
pmu.l
pmu.y
print_binary.c tools perf: Move from sane_ctype.h obtained from git to the Linux's original 2019-06-25 21:02:47 -03:00
print_binary.h
probe-event.c perf maps: Rename map_groups.h to maps.h 2019-11-26 11:07:46 -03:00
probe-event.h perf probe: Trace a magic number if variable is not found 2019-11-18 19:09:23 -03:00
probe-file.c perf probe: Fix to delete multiple probe event 2020-03-09 10:41:14 -03:00
probe-file.h perf probe: Support DW_AT_const_value constant value 2019-11-18 19:08:02 -03:00
probe-finder.c perf probe: Do not depend on dwfl_module_addrsym() 2020-03-09 10:43:53 -03:00
probe-finder.h perf probe: Trace a magic number if variable is not found 2019-11-18 19:09:23 -03:00
pstack.c perf debug: Remove needless include directives from debug.h 2019-08-31 19:10:19 -03:00
pstack.h
python-ext-sources perf python: Include rwsem.c in the pythong biding 2020-04-03 09:37:55 -03:00
python.c perf tool: Provide an option to print perf_event_open args and return value 2019-11-12 08:32:27 -03:00
rb_resort.h
rblist.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 305 2019-06-05 17:37:04 +02:00
rblist.h
record.c perf tools: Add support for leader-sampling with AUX area events 2020-04-18 09:05:00 -03:00
record.h perf record: Add num-synthesize-threads option 2020-04-23 11:10:41 -03:00
rlimit.c perf tools: Introduce rlimit__bump_memlock() helper 2019-07-09 14:59:11 -03:00
rlimit.h perf tools: Introduce rlimit__bump_memlock() helper 2019-07-09 14:59:11 -03:00
rwsem.c perf tools: Remove util.h from where it is not needed 2019-09-20 09:19:20 -03:00
rwsem.h
s390-cpumcf-kernel.h perf s390-cpumsf: Implement ->evsel_is_auxtrace() callback 2020-04-16 12:19:15 -03:00
s390-cpumsf-kernel.h
s390-cpumsf.c perf auxtrace: Add an option to synthesize callchains for regular events 2020-04-16 12:19:15 -03:00
s390-cpumsf.h
s390-sample-raw.c perf tools: Remove util.h from where it is not needed 2019-09-20 09:19:20 -03:00
sample-raw.c perf evlist: Rename struct perf_evlist to struct evlist 2019-07-29 18:34:42 -03:00
sample-raw.h perf evlist: Rename struct perf_evlist to struct evlist 2019-07-29 18:34:42 -03:00
session.c perf tools: Basic support for CGROUP event 2020-04-03 09:37:55 -03:00
session.h perf session: Add facility to peek at all events 2019-11-22 10:48:13 -03:00
setns.c perf namespaces: Move the conditional setns() prototype to namespaces.h 2019-07-09 10:13:26 -03:00
setup.py perf python: Check if clang supports -fno-semantic-interposition 2020-04-14 08:43:18 -03:00
smt.c perf tools: Apply new CPU topology sysfs attributes 2019-06-10 16:20:11 -03:00
smt.h
sort.c perf hist: Add fast path for duplicate entries check 2020-04-18 09:05:01 -03:00
sort.h perf hist: Add fast path for duplicate entries check 2020-04-18 09:05:01 -03:00
spark.c perf diff: Report noisy for cycles diff 2019-10-11 10:57:00 -03:00
spark.h perf diff: Report noisy for cycles diff 2019-10-11 10:57:00 -03:00
srccode.c perf pmu: Use file system cache to optimize sysfs access 2019-11-28 08:08:38 -03:00
srccode.h
srcline.c perf: Make perf able to build with latest libbfd 2020-01-30 11:55:26 +01:00
srcline.h
stat-display.c perf stat: Align the output for interval aggregation mode 2020-03-24 09:37:27 -03:00
stat-shadow.c perf expr: Add expr_ prefix for parse_ctx and parse_id 2020-04-16 12:19:13 -03:00
stat.c perf stat: Zero all the 'ena' and 'run' array slot stats for interval mode 2020-04-22 15:51:01 -03:00
stat.h perf stat: Show percore counts in per CPU output 2020-03-04 10:34:09 -03:00
strbuf.c perf debug: Remove needless include directives from debug.h 2019-08-31 19:10:19 -03:00
strbuf.h
strfilter.c tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
strfilter.h
string.c tools lib: Move argv_{split,free} from tools/perf/util/ 2019-07-01 22:50:40 -03:00
string2.h perf string: Export asprintf__tp_filter_pids() 2019-10-15 13:03:57 -03:00
strlist.c tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
strlist.h
svghelper.c perf env: Remove needless cpumap.h header 2019-09-20 09:19:21 -03:00
svghelper.h perf timechart: Refactor svg_build_topology_map() 2019-08-29 17:38:31 -03:00
symbol-elf.c perf symbols: Consolidate symbol fixup issue 2020-03-23 11:08:29 -03:00
symbol-minimal.c perf tools: Remove util.h from where it is not needed 2019-09-20 09:19:20 -03:00
symbol.c perf annotate: Add basic support for bpf_image 2020-04-16 12:19:06 -03:00
symbol.h perf maps: Rename 'mg' variables to 'maps' 2019-11-26 11:07:46 -03:00
symbol_conf.h perf report: Allow specifying event to be used as sort key in --group output 2020-03-24 09:37:27 -03:00
symbol_fprintf.c perf symbols: Move symsrc prototypes to a separate header 2019-08-31 22:24:05 -03:00
symsrc.h perf symbols: Move symsrc prototypes to a separate header 2019-08-31 22:24:05 -03:00
synthetic-events.c perf synthetic-events: save 4kb from 2 stack frames 2020-04-16 12:19:13 -03:00
synthetic-events.h perf record: Support synthesizing cgroup events 2020-04-03 09:37:55 -03:00
syscalltbl.c perf trace: Preallocate the syscall table 2019-07-29 18:34:42 -03:00
syscalltbl.h perf trace: Preallocate the syscall table 2019-07-29 18:34:42 -03:00
target.c perf tools: Remove util.h from where it is not needed 2019-09-20 09:19:20 -03:00
target.h
term.c
term.h
thread-stack.c perf thread-stack: Add thread_stack__sample_late() 2020-04-16 12:19:15 -03:00
thread-stack.h perf thread-stack: Add thread_stack__sample_late() 2020-04-16 12:19:15 -03:00
thread.c perf callchain: Stitch LBR call stack 2020-04-18 09:05:01 -03:00
thread.h perf callchain: Stitch LBR call stack 2020-04-18 09:05:01 -03:00
thread_map.c libperf: Rename the PERF_RECORD_ structs to have a "perf" prefix 2019-08-29 08:36:12 -03:00
thread_map.h libperf: Rename the PERF_RECORD_ structs to have a "perf" prefix 2019-08-29 08:36:12 -03:00
time-utils.c perf script: Fix --reltime with --time 2019-10-15 08:36:22 -03:00
time-utils.h perf script: Fix --reltime with --time 2019-10-15 08:36:22 -03:00
tool.h perf record: Support synthesizing cgroup events 2020-04-03 09:37:55 -03:00
top.c libperf: Add perf_evlist__first()/last() functions 2019-09-25 09:51:48 -03:00
top.h perf top: Add option to enable the LBR stitching approach 2020-04-18 09:05:01 -03:00
trace-event-info.c libperf: Move 'page_size' global variable to libperf 2019-09-25 09:51:48 -03:00
trace-event-parse.c perf tools: Remove unused trace_find_next_event() 2019-11-05 08:39:27 -03:00
trace-event-read.c perf tools: Remove util.h from where it is not needed 2019-09-20 09:19:20 -03:00
trace-event-scripting.c perf tools: Remove perf.h from source files not needing it 2019-08-29 17:38:32 -03:00
trace-event.c perf tools: Remove util.h from where it is not needed 2019-09-20 09:19:20 -03:00
trace-event.h perf tools: Remove unused trace_find_next_event() 2019-11-05 08:39:27 -03:00
trigger.h perf tools: Remove debug.h from header files not needing it 2019-08-29 17:38:32 -03:00
tsc.c
tsc.h perf tools: Move event synthesizing routines to separate header 2019-09-20 09:19:22 -03:00
units.c
units.h
unwind-libdw.c perf map_symbol: Rename ms->mg to ms->maps 2019-11-26 11:07:46 -03:00
unwind-libdw.h
unwind-libunwind-local.c perf maps: Rename 'mg' variables to 'maps' 2019-11-26 11:07:46 -03:00
unwind-libunwind.c perf maps: Rename 'mg' variables to 'maps' 2019-11-26 11:07:46 -03:00
unwind.h perf maps: Merge 'struct maps' with 'struct map_groups' 2019-11-26 11:07:46 -03:00
usage.c perf tools: Remove debug.h from places where it is not needed 2019-09-20 09:19:20 -03:00
util.c perf tools: Support CAP_PERFMON capability 2020-04-16 12:19:08 -03:00
util.h perf util: Factor out sysctl__nmi_watchdog_enabled() 2020-03-10 14:46:19 -03:00
values.c perf debug: Remove needless include directives from debug.h 2019-08-31 19:10:19 -03:00
values.h
vdso.c perf thread: Rename thread->mg to thread->maps 2019-11-26 11:07:46 -03:00
vdso.h
xyarray.c tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
zlib.c perf tools: Remove util.h from where it is not needed 2019-09-20 09:19:20 -03:00
zstd.c perf session: Fix loading of compressed data split across adjacent records 2019-07-23 09:04:03 -03:00