Kan Liang daefd0bc0b perf stat: Add support to measure SMI cost ... Implementing a new --smi-cost mode in perf stat to measure SMI cost. During the measurement, the /sys/device/cpu/freeze_on_smi will be set. The measurement can be done with one counter (unhalted core cycles), and two free running MSR counters (IA32_APERF and SMI_COUNT). In practice, the percentages of SMI core cycles should be more useful than absolute value. So the output will be the percentage of SMI core cycles and SMI#. metric_only will be set by default. SMI cycles% = (aperf - unhalted core cycles) / aperf Here is an example output. Performance counter stats for 'sudo echo ': SMI cycles% SMI# 0.1% 1 0.010858678 seconds time elapsed Users who wants to get the actual value can apply additional --no-metric-only. Signed-off-by: Kan Liang <Kan.liang@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Robert Elliott <elliott@hpe.com> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1495825538-5230-3-git-send-email-kan.liang@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>		2017-06-21 11:35:35 -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_counter tools: Move from Documentation/perf_counter/ to tools/perf/	2009-06-06 20:33:43 +02:00
Build.txt	perf build: Add build documentation	2015-02-12 17:53:00 -03:00
callchain-overhead-calculation.txt	perf tools: Document --children option in more detail	2015-04-29 10:38:06 -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 documentation about context switch events	2016-11-11 13:18:52 -03:00
itrace.txt	perf tools: Add support for skipping itrace instructions	2016-03-30 11:14:09 -03:00
jit-interface.txt	perf symbols: Add description of JIT interface	2012-08-13 14:55:02 -03:00
jitdump-specification.txt	perf jit: Add jitdump format specification document	2016-10-24 11:07:41 -03:00
Makefile	tools: Move utilities.mak from perf to tools/scripts/	2016-03-18 13:57:20 -03:00
manpage-1.72.xsl	perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/	2009-06-06 20:33:43 +02:00
manpage-base.xsl	perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/	2009-06-06 20:33:43 +02:00
manpage-bold-literal.xsl	perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/	2009-06-06 20:33:43 +02:00
manpage-normal.xsl	perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/	2009-06-06 20:33:43 +02:00
manpage-suppress-sp.xsl	perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/	2009-06-06 20:33:43 +02:00
perf-annotate.txt	perf annotate: Add -q/--quiet option	2017-02-20 11:47:18 -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 mem: Rename 'routine' to 'function'	2015-10-19 16:10:25 -03:00
perf-buildid-cache.txt	perf buildid-cache: Scan and import user SDT events to probe cache	2016-07-04 19:39:00 -03:00
perf-buildid-list.txt	perf report: Accept fifos as input file	2011-12-23 17:01:03 -02:00
perf-c2c.txt	perf tools: Fix spelling mistakes	2017-05-04 09:59:53 -03:00
perf-config.txt	perf diff: Add diff.compute config option	2017-02-13 14:29:37 -03:00
perf-data.txt	perf data ctf: Add '--all' option for 'perf data convert'	2016-06-28 10:54:57 -03:00
perf-diff.txt	perf diff: Add -q/--quiet option	2017-02-20 11:47:08 -03:00
perf-evlist.txt	perf evlist: Add --trace-fields option to show trace fields	2016-01-08 14:23:02 -03:00
perf-ftrace.txt	perf ftrace: Add -D option for depth filter	2017-06-19 22:05:54 -03:00
perf-help.txt	perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/	2009-06-06 20:33:43 +02:00
perf-inject.txt	perf inject: Add jitdump mmap injection support	2016-02-05 09:46:45 -03:00
perf-kallsyms.txt	perf kallsyms: Introduce tool to look for extended symbol information on the running kernel	2017-01-11 16:48:01 -03:00
perf-kmem.txt	perf kmem: Add option to specify time window of interest	2016-12-01 13:03:02 -03:00
perf-kvm.txt	perf tools: Configurable per thread proc map processing time out	2015-06-19 18:27:13 -03:00
perf-list.txt	perf list sdt: Show option in man page	2017-03-27 11:58:09 -03:00
perf-lock.txt	perf lock: Account for lock average wait time	2013-10-09 11:24:01 -03:00
perf-mem.txt	perf mem: Add --ldlat option	2016-06-15 10:35:27 -03:00
perf-probe.txt	perf probe: Fix examples section of documentation	2017-06-07 20:23:11 -03:00
perf-record.txt	perf tools: Fix spelling mistakes	2017-05-04 09:59:53 -03:00
perf-report.txt	perf tools: Fix spelling mistakes	2017-05-04 09:59:53 -03:00
perf-sched.txt	perf sched timehist: Add --next option	2017-03-14 15:17:38 -03:00
perf-script-perl.txt	perf script: Fix documentation errors	2017-06-07 20:27:20 -03:00
perf-script-python.txt	perf script python: Remove dups in documentation examples	2017-06-07 20:36:12 -03:00
perf-script.txt	perf script: Support -F brstackoff,dso	2017-06-19 22:05:46 -03:00
perf-stat.txt	perf stat: Add support to measure SMI cost	2017-06-21 11:35:35 -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: Add more options to IO mode	2014-07-10 00:22:54 +02:00
perf-top.txt	perf tools: Explicitly document that --children is enabled by default	2016-12-07 12:00:35 -03:00
perf-trace.txt	perf trace: Add usage of --no-syscalls in man page	2017-04-13 10:54:04 -03:00
perf.data-file-format.txt	perf tools: Fix spelling mistakes	2017-05-04 09:59:53 -03:00
perf.txt	perf tools: Handle -h and -v options	2015-10-05 16:36:18 -03:00
perfconfig.example	perf config: Show default report configuration in example and docs	2016-09-01 09:44:13 -03:00
tips.txt	perf tools: Fix spelling mistakes	2017-05-04 09:59:53 -03:00