Adrian Hunter d20aff1512 perf record: Add 'snapshot' control command ... Add 'snapshot' control command to create an AUX area tracing snapshot the same as if sending SIGUSR2. The advantage of the FIFO is that access is governed by access to the FIFO. Example: $ mkfifo perf.control $ mkfifo perf.ack $ cat perf.ack & [1] 15235 $ sudo ~/bin/perf record --control fifo:perf.control,perf.ack -S -e intel_pt//u -- sleep 60 & [2] 15243 $ ps -e | grep perf 15244 pts/1 00:00:00 perf $ kill -USR2 15244 bash: kill: (15244) - Operation not permitted $ echo snapshot > perf.control ack $ Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20200901093758.32293-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>		2020-09-04 14:38:15 -03:00
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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-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	perf tools: Document --children option in more detail	2015-04-29 10:38:06 -03:00
db-export.txt	perf db-export: Add brief documentation	2019-06-05 09:47:57 -03:00
examples.txt	perf record: Remove -f/--force option	2013-07-08 17:37:25 -03:00
intel-bts.txt	perf tools: Add Intel BTS support	2015-08-21 11:34:10 -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 'q' option for quicker, less detailed decoding	2020-08-06 08:24:03 -03:00
jit-interface.txt
jitdump-specification.txt	perf docs: Correct and clarify jitdump spec	2019-09-30 17:29:51 -03:00
Makefile	perf doc: allow ASCIIDOC_EXTRA to be an argument	2020-04-18 09:05:00 -03:00
manpage-1.72.xsl
manpage-base.xsl
manpage-bold-literal.xsl
manpage-normal.xsl
manpage-suppress-sp.xsl
perf-annotate.txt	perf tools: Support --prefix/--prefix-strip	2020-01-14 12:02:19 -03:00
perf-archive.txt	perf archive: Remove duplicated 'runs' in man page	2013-12-09 15:21:45 -03:00
perf-bench.txt	perf bench: Add basic syscall benchmark	2020-07-28 08:50:48 -03:00
perf-buildid-cache.txt	perf buildid-cache: Support --purge-all option	2018-04-26 09:30:26 -03:00
perf-buildid-list.txt
perf-c2c.txt	perf c2c: Fix 'perf c2c record -e list' to show the default events used	2020-05-28 10:03:25 -03:00
perf-config.txt	perf ftrace: Select function/function_graph tracer automatically	2020-08-14 08:36:31 -03:00
perf-data.txt	perf data: Add support to store time of day in CTF data conversion	2020-08-06 09:43:37 -03:00
perf-diff.txt	perf diff: Report noisy for cycles diff	2019-10-11 10:57:00 -03:00
perf-evlist.txt	perf evlist: Document missing --force option	2017-11-16 14:50:07 -03:00
perf-ftrace.txt	perf ftrace: Add option --tid to filter by thread id	2020-08-14 09:34:52 -03:00
perf-help.txt
perf-inject.txt	perf intel-pt: Add Intel PT man page references	2020-03-11 11:00:09 -03:00
perf-intel-pt.txt	perf intel-pt: Add support for decoding PSB+ only	2020-08-06 09:02:43 -03:00
perf-kallsyms.txt	perf tools: Correct title markers for asciidoctor	2018-03-07 10:26:32 -03:00
perf-kmem.txt	perf kmem: Document a missing option & an argument	2018-02-16 14:55:42 -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 tools: Allow r0x<HEX> event syntax	2020-07-30 07:01:48 -03:00
perf-lock.txt	perf lock: Document missing options	2017-11-16 14:50:04 -03:00
perf-mem.txt	perf mem/c2c: Fix perf_mem_events to support powerpc	2019-02-04 11:32:14 -03:00
perf-probe.txt	perf-probe: Add user memory access attribute support	2019-05-25 23:04:42 -04:00
perf-record.txt	perf record: Add 'snapshot' control command	2020-09-04 14:38:15 -03:00
perf-report.txt	perf report: Add option to enable the LBR stitching approach	2020-04-18 09:05:01 -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 tools: Correct title markers for asciidoctor	2018-03-07 10:26:32 -03:00
perf-script-python.txt	perf script python: Add dict fields introduction to Documentation	2018-06-06 15:40:10 -03:00
perf-script.txt	perf script: Add option --show-text-poke-events	2020-07-10 08:31:45 -03:00
perf-stat.txt	perf tools: Add FIFO file names as alternative options to --control	2020-09-04 14:38:15 -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 tools: Add optional support for libpfm4	2020-05-29 16:51:38 -03:00
perf-trace.txt	perf trace: Introduce --errno-summary	2019-10-15 13:03:49 -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 header: Store clock references for -k/--clockid option	2020-08-06 09:35:06 -03:00
perf.txt	perf tool: Provide an option to print perf_event_open args and return value	2019-11-12 08:32:27 -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