Arnaldo Carvalho de Melo 44621819dd perf trace: Exclude the kernel part of the callchain leading to a syscall ...

The kernel parts are not that useful:

  # trace -m 512 -e nanosleep --call dwarf  usleep 1
     0.065 ( 0.065 ms): usleep/18732 nanosleep(rqtp: 0x7ffc4ee4e200) = 0
                                       syscall_slow_exit_work ([kernel.kallsyms])
                                       do_syscall_64 ([kernel.kallsyms])
                                       return_from_SYSCALL_64 ([kernel.kallsyms])
                                       __nanosleep (/usr/lib64/libc-2.22.so)
                                       usleep (/usr/lib64/libc-2.22.so)
                                       main (/usr/bin/usleep)
                                       __libc_start_main (/usr/lib64/libc-2.22.so)
                                       _start (/usr/bin/usleep)
  #

So lets just use perf_event_attr.exclude_callchain_kernel to avoid
collecting it in the ring buffer:

  # trace -m 512 -e nanosleep --call dwarf  usleep 1
     0.063 ( 0.063 ms): usleep/19212 nanosleep(rqtp: 0x7ffc3df10fb0) = 0
                                       __nanosleep (/usr/lib64/libc-2.22.so)
                                       usleep (/usr/lib64/libc-2.22.so)
                                       main (/usr/bin/usleep)
                                       __libc_start_main (/usr/lib64/libc-2.22.so)
                                       _start (/usr/bin/usleep)
  #

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-qctu3gqhpim0dfbcp9d86c91@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

2016-04-11 22:18:19 -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

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 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

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 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: Add --all-user/--all-kernel options

2016-02-18 10:48:44 -03:00

perf-report.txt

perf tools: Make -f/--force option documentation consistent across tools

2016-03-30 11:14:08 -03:00

perf-sched.txt

perf report: Accept fifos as input file

2011-12-23 17:01:03 -02:00

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: Make -f/--force option documentation consistent across tools

2016-03-30 11:14:08 -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 top: Add --hierarchy option

2016-02-24 20:21:15 -03:00

perf-trace.txt

perf trace: Exclude the kernel part of the callchain leading to a syscall

2016-04-11 22:18:19 -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