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| author | Andi Kleen <ak@linux.intel.com> | 2015-07-18 08:24:49 -0700 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-08-06 16:35:30 -0300 |
| commit | 57849998e2cd24d50295076a1bbd2f029e2d7c38 (patch) | |
| tree | e9ce96783d8f441405e1cb055e523179a489c465 /tools/perf/util/hist.c | |
| parent | d4957633bf9dab70e566e7dbb2b8d0c61c3a2f1e (diff) | |
| download | lwn-57849998e2cd24d50295076a1bbd2f029e2d7c38.tar.gz lwn-57849998e2cd24d50295076a1bbd2f029e2d7c38.zip | |
perf report: Add processing for cycle histograms
Call the earlier added cycle histogram infrastructure from the perf
report hist iter callback. For this we walk the branch records.
This allows to use cycle histograms when browsing perf report annotate.
v2: Rename flag
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1437233094-12844-5-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/hist.c')
| -rw-r--r-- | tools/perf/util/hist.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index 54fc0033dd6a..a6e9ddd37913 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -1415,6 +1415,39 @@ int hists__link(struct hists *leader, struct hists *other) return 0; } +void hist__account_cycles(struct branch_stack *bs, struct addr_location *al, + struct perf_sample *sample, bool nonany_branch_mode) +{ + struct branch_info *bi; + + /* If we have branch cycles always annotate them. */ + if (bs && bs->nr && bs->entries[0].flags.cycles) { + int i; + + bi = sample__resolve_bstack(sample, al); + if (bi) { + struct addr_map_symbol *prev = NULL; + + /* + * Ignore errors, still want to process the + * other entries. + * + * For non standard branch modes always + * force no IPC (prev == NULL) + * + * Note that perf stores branches reversed from + * program order! + */ + for (i = bs->nr - 1; i >= 0; i--) { + addr_map_symbol__account_cycles(&bi[i].from, + nonany_branch_mode ? NULL : prev, + bi[i].flags.cycles); + prev = &bi[i].to; + } + free(bi); + } + } +} size_t perf_evlist__fprintf_nr_events(struct perf_evlist *evlist, FILE *fp) { |