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linux-sg2042/tools/perf/Documentation
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Andi Kleen 508be0dfe6 perf report: Add srcline_from/to branch sort keys 
Add "srcline_from" and "srcline_to" branch sort keys that allow to show
the source lines of a branch.

That makes it much easier to track down where particular branches happen
in the program, for example to examine branch mispredictions, or to
associate it with cycle counts:

  % perf record -b -e cycles:p ./tcall
  % perf report --sort srcline_from,srcline_to,mispredict
  ...
    15.10%  tcall.c:18       tcall.c:10       N
    14.83%  tcall.c:11       tcall.c:5        N
    14.12%  tcall.c:7        tcall.c:12       N
    14.04%  tcall.c:12       tcall.c:5        N
    12.42%  tcall.c:17       tcall.c:18       N
    12.39%  tcall.c:7        tcall.c:13       N
    12.27%  tcall.c:13       tcall.c:17       N
  ...

  % perf report --sort srcline_from,srcline_to,cycles
  ...
    17.12%  tcall.c:18       tcall.c:11       1
    17.01%  tcall.c:12       tcall.c:6        1
    16.98%  tcall.c:11       tcall.c:6        1
    15.91%  tcall.c:17       tcall.c:18       1
     6.38%  tcall.c:7        tcall.c:17       7
     4.80%  tcall.c:7        tcall.c:12       8
     4.21%  tcall.c:7        tcall.c:17       8
     2.67%  tcall.c:7        tcall.c:12       7
     2.62%  tcall.c:7        tcall.c:12       10
     2.10%  tcall.c:7        tcall.c:17       9
     1.58%  tcall.c:7        tcall.c:12       6
     1.44%  tcall.c:7        tcall.c:12       5
     1.38%  tcall.c:7        tcall.c:12       9
     1.06%  tcall.c:7        tcall.c:17       13
     1.05%  tcall.c:7        tcall.c:12       4
     1.01%  tcall.c:7        tcall.c:17       6

Open issues:

- Some kernel symbols get misresolved.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lkml.kernel.org/r/1463775308-32748-1-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 		2016-05-23 11:25:16 -03:00
..
Build.txt perf build: Add build documentation 2015-02-12 17:53:00 -03:00
Makefile tools: Move utilities.mak from perf to tools/scripts/ 2016-03-18 13:57:20 -03:00
android.txt perf tools: Add info about cross compiling for Android ARM 2012-10-31 12:17:49 -02:00
asciidoc.conf perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +02:00
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 tools: Add support for skipping itrace instructions 2016-03-30 11:14:09 -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
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 tools: Make -f/--force option documentation consistent across tools 2016-03-30 11:14:08 -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: Add --purge FILE to remove all caches of FILE 2015-02-27 15:52:33 -03:00
perf-buildid-list.txt perf report: Accept fifos as input file 2011-12-23 17:01:03 -02:00
perf-config.txt perf config: Add '--system' and '--user' options to select which config file is used 2016-02-12 10:54:46 -03:00
perf-data.txt perf data: Add perf data to CTF conversion support 2015-02-25 16:13:12 -03:00
perf-diff.txt perf tools: Make -f/--force option documentation consistent across tools 2016-03-30 11:14:08 -03:00
perf-evlist.txt perf evlist: Add --trace-fields option to show trace fields 2016-01-08 14:23:02 -03:00
perf-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-kmem.txt perf kmem: Add --live option for current allocation stat 2015-05-04 13:34:47 -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: Document event specifications better 2016-04-06 11:19:18 -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 -U/-K (--all-user/--all-kernel) options 2016-03-30 11:14:07 -03:00
perf-probe.txt perf probe: Add --no-inlines option to avoid searching inline functions 2015-05-08 16:26:44 -03:00
perf-record.txt perf record: Disable buildid cache options by default in switch output mode 2016-04-28 09:58:59 -03:00
perf-report.txt perf report: Add srcline_from/to branch sort keys 2016-05-23 11:25:16 -03:00
perf-sched.txt perf sched map: Display only given cpus 2016-04-13 10:11:52 -03:00
perf-script-perl.txt perf Documentation: Fix typos in perf/Documentation 2014-10-15 17:39:02 -03:00
perf-script-python.txt perf Documentation: Fix typos in perf/Documentation 2014-10-15 17:39:02 -03:00
perf-script.txt perf tools: Fix usage of max_stack sysctl 2016-05-20 11:43:56 -03:00
perf-stat.txt perf stat: Add --metric-only support for -A 2016-03-10 16:50:47 -03:00
perf-test.txt perf Documentation: Fix typos in perf/Documentation 2014-10-15 17:39:02 -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: Set the maximum allowed stack from /proc/sys/kernel/perf_event_max_stack 2016-04-27 10:29:07 -03:00
perf-trace.txt perf tools: Fix usage of max_stack sysctl 2016-05-20 11:43:56 -03:00
perf.txt perf tools: Handle -h and -v options 2015-10-05 16:36:18 -03:00
perfconfig.example perf annotate: Rename 'colors.code' to 'colors.jump_arrows' 2016-01-26 11:52:46 -03:00
tips.txt perf report: Add --hierarchy option 2016-02-24 20:21:15 -03:00