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0d435bf8c3
linux/tools/perf/Documentation
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Namhyung Kim 0d435bf8c3 perf lock: Add -c/--combine-locks option 
The -c or --combine-locks option is to merge lock instances in the
same class into a single entry.  It compares the name of the locks
and marks duplicated entries using lock_stat->combined.

 # perf lock report
                Name   acquired  contended   avg wait (ns) total wait (ns)   max wait (ns)   min wait (ns)

       rcu_read_lock     251225          0               0               0               0               0
 &(ei->i_block_re...       8731          0               0               0               0               0
 &sb->s_type->i_l...       8731          0               0               0               0               0
  hrtimer_bases.lock       5261          0               0               0               0               0
  hrtimer_bases.lock       2626          0               0               0               0               0
  hrtimer_bases.lock       1953          0               0               0               0               0
  hrtimer_bases.lock       1382          0               0               0               0               0
    cpu_hotplug_lock       1350          0               0               0               0               0
  hrtimer_bases.lock       1273          0               0               0               0               0
  hrtimer_bases.lock       1269          0               0               0               0               0

 # perf lock report -c
                Name   acquired  contended   avg wait (ns) total wait (ns)   max wait (ns)   min wait (ns)

       rcu_read_lock     251225          0               0               0               0               0
  hrtimer_bases.lock      39450          0               0               0               0               0
 &sb->s_type->i_l...      10301          1             662             662             662             662
    ptlock_ptr(page)      10173          2             701            1402             760             642
 &(ei->i_block_re...       8732          0               0               0               0               0
        &xa->xa_lock       8088          0               0               0               0               0
         &base->lock       6705          0               0               0               0               0
         &p->pi_lock       5549          0               0               0               0               0
 &dentry->d_lockr...       5010          4            1274            5097            1844             789
           &ep->lock       3958          0               0               0               0               0

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220127000050.3011493-6-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-02-10 15:41:27 -03:00
..
android.txt perf tools: Update android build documentation 2016-07-04 20:27:27 -03:00
asciidoc.conf perf docs: Allow man page date to be specified 2019-09-27 09:26:14 -03:00
asciidoctor-extensions.rb perf Documentation: Support for asciidoctor 2018-04-26 13:47:10 -03:00
build-docdep.perl perf doc: Fix doc.dep 2021-08-02 09:56:17 -03:00
build-xed.txt perf script: Add --insn-trace for instruction decoding 2018-10-24 15:29:50 -03:00
Build.txt perf tools: Add doc about how to build perf with Asan and UBSan 2019-03-19 16:52:04 -03:00
callchain-overhead-calculation.txt
cat-texi.perl perf doc: Fix perfman.info build 2021-08-02 09:56:17 -03:00
db-export.txt perf db-export: Add brief documentation 2019-06-05 09:47:57 -03:00
examples.txt perf tools: Replace lkml.org links with lore 2021-02-11 12:54:27 -03:00
intel-bts.txt perf tools: Add Intel BTS support 2015-08-21 11:34:10 -03:00
intel-hybrid.txt perf docs: Fix accidental em-dashes 2021-08-10 11:05:21 -03:00
intel-pt.txt perf intel-pt: Update intel-pt.txt file with new location of the documentation 2020-03-11 11:00:33 -03:00
itrace.txt perf auxtrace: Add itrace d+o option to direct debug log to stdout 2021-10-27 16:20:45 -03:00
jit-interface.txt
jitdump-specification.txt perf doc: Fix typos all over the place 2021-09-27 09:32:28 -03:00
Makefile perf doc: Reorganize ARTICLES variables. 2021-08-02 09:56:18 -03:00
manpage-1.72.xsl
manpage-base.xsl
manpage-bold-literal.xsl
manpage-normal.xsl
manpage-suppress-sp.xsl
perf-annotate.txt perf annotate: Add itrace options support 2021-06-16 15:07:42 -03:00
perf-archive.txt
perf-bench.txt perf bench: Add basic syscall benchmark 2020-07-28 08:50:48 -03:00
perf-buildid-cache.txt perf record: Disable debuginfod by default 2022-01-15 17:41:25 -03:00
perf-buildid-list.txt
perf-c2c.txt perf doc: Fix typos all over the place 2021-09-27 09:32:28 -03:00
perf-config.txt perf record: Disable debuginfod by default 2022-01-15 17:41:25 -03:00
perf-daemon.txt perf daemon: Add examples to man page 2021-02-11 10:19:52 -03:00
perf-data.txt perf data: Add JSON export 2021-04-29 10:30:58 -03:00
perf-diff.txt perf diff: Support hot streams comparison 2020-10-14 13:34:48 -03:00
perf-dlfilter.txt perf dlfilter: Amend documentation wrt library dependencies 2021-08-11 09:34:31 -03:00
perf-evlist.txt perf tools: Fix documentation of verbose options 2021-03-06 16:54:26 -03:00
perf-ftrace.txt perf tools: Fix documentation of verbose options 2021-03-06 16:54:26 -03:00
perf-help.txt
perf-inject.txt perf inject: Add vmlinux and ignore-vmlinux arguments 2021-11-07 12:27:38 -03:00
perf-intel-pt.txt perf intel-pt: Support itrace d+o option to direct debug log to stdout 2021-10-27 16:21:01 -03:00
perf-iostat.txt perf docs: Fix accidental em-dashes 2021-08-10 11:05:21 -03:00
perf-kallsyms.txt perf tools: Fix documentation of verbose options 2021-03-06 16:54:26 -03:00
perf-kmem.txt perf kmem: Improve man page for record options 2021-10-08 16:10:02 -03:00
perf-kvm.txt perf kvm: Clarify the 'perf kvm' -i and -o command line options 2019-12-02 15:38:59 -03:00
perf-list.txt perf docs: Update link to AMD documentation 2021-12-07 22:18:24 -03:00
perf-lock.txt perf lock: Add -c/--combine-locks option 2022-02-10 15:41:27 -03:00
perf-mem.txt perf mem: Support data page size 2021-01-20 14:34:20 -03:00
perf-probe.txt perf probe: Add permission and sysctl notice to man page 2021-06-04 10:24:38 -03:00
perf-record.txt perf record: Disable debuginfod by default 2022-01-15 17:41:25 -03:00
perf-report.txt perf report: Add --skip-empty option to suppress 0 event stat 2021-04-29 10:30:59 -03:00
perf-sched.txt perf sched timehist: Add support for filtering on CPU 2020-01-06 11:46:09 -03:00
perf-script-perl.txt perf doc: Fix typos all over the place 2021-09-27 09:32:28 -03:00
perf-script-python.txt perf doc: Fix typos all over the place 2021-09-27 09:32:28 -03:00
perf-script.txt perf script: Support instruction latency 2021-10-28 09:28:03 -03:00
perf-stat.txt perf stat: Support --cputype option for hybrid events 2021-12-07 22:18:25 -03:00
perf-test.txt perf test: Add -F/--dont-fork option 2016-06-30 18:27:45 -03:00
perf-timechart.txt perf timechart: Document missing --force option 2017-11-16 14:50:06 -03:00
perf-top.txt perf docs: Add info on AMD raw event encoding 2021-12-07 22:18:24 -03:00
perf-trace.txt perf tools: Fix documentation of verbose options 2021-03-06 16:54:26 -03:00
perf-version.txt perf version: Add man page 2018-04-02 13:52:23 -03:00
perf.data-directory-format.txt perf record: Put a copy of kcore into the perf.data directory 2019-11-06 15:43:05 -03:00
perf.data-file-format.txt perf bpf: Pull in bpf_program__get_prog_info_linear() 2021-11-01 18:16:40 -03:00
perf.txt perf docs: Add man pages to see also 2021-03-02 09:37:38 -03:00
perfconfig.example perf config: Show default report configuration in example and docs 2016-09-01 09:44:13 -03:00
security.txt perf docs: Introduce security.txt file to document related issues 2020-05-28 10:03:26 -03:00
tips.txt perf tools: Fix typos / broken sentences 2019-07-02 16:08:16 -03:00
topdown.txt perf doc: Fix typos all over the place 2021-09-27 09:32:28 -03:00