linux_dsm_epyc7002/tools/perf/ui
Namhyung Kim 26e779245d perf report: Support folded callchain mode on --stdio
Add new call chain option (-g) 'folded' to print callchains in a line.
The callchains are separated by semicolons, and preceded by (absolute)
percent values and a space.

For example, the following 20 lines can be printed in 3 lines with the
folded output mode:

  $ perf report -g flat --no-children | grep -v ^# | head -20
      60.48%  swapper  [kernel.vmlinux]  [k] intel_idle
              54.60%
                 intel_idle
                 cpuidle_enter_state
                 cpuidle_enter
                 call_cpuidle
                 cpu_startup_entry
                 start_secondary

              5.88%
                 intel_idle
                 cpuidle_enter_state
                 cpuidle_enter
                 call_cpuidle
                 cpu_startup_entry
                 rest_init
                 start_kernel
                 x86_64_start_reservations
                 x86_64_start_kernel

  $ perf report -g folded --no-children | grep -v ^# | head -3
      60.48%  swapper  [kernel.vmlinux]  [k] intel_idle
  54.60% intel_idle;cpuidle_enter_state;cpuidle_enter;call_cpuidle;cpu_startup_entry;start_secondary
  5.88% intel_idle;cpuidle_enter_state;cpuidle_enter;call_cpuidle;cpu_startup_entry;rest_init;start_kernel;x86_64_start_reservations;x86_64_start_kernel

This mode is supported only for --stdio now and intended to be used by
some scripts like in FlameGraphs[1].  Support for other UI might be
added later.

[1] http://www.brendangregg.com/FlameGraphs/cpuflamegraphs.html

Requested-and-Tested-by: Brendan Gregg <brendan.d.gregg@gmail.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1447047946-1691-2-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-19 13:19:22 -03:00
..
browsers perf hists browser: The dso can be obtained from popup_action->ms.map->dso 2015-11-12 18:58:18 -03:00
gtk perf build: Add gtk objects building 2015-02-12 11:49:12 -03:00
stdio perf report: Support folded callchain mode on --stdio 2015-11-19 13:19:22 -03:00
tui perf ui tui: Register the error callbacks before initializing the widgets 2015-10-22 16:44:17 -03:00
browser.c perf ui browser: Optional horizontal scrolling key binding 2015-10-05 17:59:49 -03:00
browser.h perf ui browser: Optional horizontal scrolling key binding 2015-10-05 17:59:49 -03:00
Build perf build: Add slang objects building 2015-02-12 11:48:13 -03:00
helpline.c perf ui/helpline: Introduce ui_helpline__vshow() 2012-12-09 08:46:04 -03:00
helpline.h perf ui/helpline: Introduce ui_helpline__vshow() 2012-12-09 08:46:04 -03:00
hist.c perf tools: Use hpp_dimension__add_output to register hpp columns 2015-10-06 18:04:59 -03:00
keysyms.h perf hists browser: Add option for runtime switching perf data file 2013-02-06 18:09:24 -03:00
libslang.h perf ui browser: Introduce ui_browser__printf() 2015-08-12 10:27:05 -03:00
progress.c perf ui progress: Per progress bar state 2013-10-23 15:40:38 -03:00
progress.h perf tools: Remove EOL whitespaces 2015-01-21 13:24:31 -03:00
setup.c perf tools: Call perf_hpp__init() before setting up GUI browsers 2014-05-21 11:45:35 +02:00
ui.h perf tools: Separate out GTK codes to libperf-gtk.so 2013-10-09 15:55:25 -03:00
util.c perf evsel: Introduce perf_evsel__open_strerror method 2013-01-24 16:40:09 -03:00
util.h perf ui: Introduce struct perf_error_ops 2012-06-19 13:06:18 -03:00