xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

perf diff: Add option to sort entries based on diff computation

Browse Source 
Adding support to sort hist entries based on the outcome of selected
computation. It's now possible to specify '+' as a first character of
'-c' option value to make such sort.

Example:

  $ perf diff -c ratio -b
  # Event 'cache-misses'
  #
  #   Baseline           Ratio      Shared Object                            Symbol
  #   ........  ..............  .................  ................................
  #
        19.64%            0.69  [kernel.kallsyms]  [k] clear_page
         0.30%            0.17  [kernel.kallsyms]  [k] mm_alloc
         0.04%            0.20  [kernel.kallsyms]  [k] kmem_cache_alloc

  $ perf diff -c +ratio -b
  # Event 'cache-misses'
  #
  #   Baseline           Ratio      Shared Object                            Symbol
  #   ........  ..............  .................  ................................
  #
        19.64%            0.69  [kernel.kallsyms]  [k] clear_page
         0.04%            0.20  [kernel.kallsyms]  [k] kmem_cache_alloc
         0.30%            0.17  [kernel.kallsyms]  [k] mm_alloc

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1349448287-18919-4-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa
2012-10-05 16:44:42 +02:00
committed by Arnaldo Carvalho de Melo
parent 7aaf6b3551
commit 96c47f1984
5 changed files with 167 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
tools/perf/util/hist.h
View File

@@ -205,4 +205,6 @@ int perf_evlist__gtk_browse_hists(struct perf_evlist *evlist __maybe_unused,
unsigned int hists__sort_list_width(struct hists *self);
double perf_diff__compute_delta(struct hist_entry *he);
double perf_diff__compute_ratio(struct hist_entry *he);
#endif /* __PERF_HIST_H */

15
tools/perf/util/sort.h
View File

@@ -52,6 +52,19 @@ struct he_stat {
u32 nr_events;
};
struct hist_entry_diff {
bool computed;
/* PERF_HPP__DISPL */
int displacement;
/* PERF_HPP__DELTA */
double period_ratio_delta;
/* PERF_HPP__RATIO */
double period_ratio;
};
/**
* struct hist_entry - histogram entry
*
@@ -67,6 +80,8 @@ struct hist_entry {
u64 ip;
s32 cpu;
struct hist_entry_diff diff;
/* XXX These two should move to some tree widget lib */
u16 row_offset;
u16 nr_rows;