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perf tools: Add support for weight v7 (modified)

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perf record has a new option -W that enables weightened sampling.

Add sorting support in top/report for the average weight per sample and the
total weight sum. This allows to both compare relative cost per event
and the total cost over the measurement period.

Add the necessary glue to perf report, record and the library.

v2: Merge with new hist refactoring.
v3: Fix manpage. Remove value check.
Rename global_weight to weight and weight to local_weight.
v4: Readd sort keys to manpage
v5: Move weight to end
v6: Move weight to template
v7: Rename weight key.

Original patch from Andi modified by Stephane Eranian <eranian@google.com>
to include ONLY the weight supporting code and apply to pristine 3.8.0-rc4.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359040242-8269-6-git-send-email-eranian@google.com
[ committer note: changed to cope with fc5871ed and the hists_link perf test entry ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Andi Kleen 2013-01-24 16:10:29 +01:00 • committed by Arnaldo Carvalho de Melo
parent 2fe85427e3
commit 05484298cb
17 changed files with 110 additions and 22 deletions
Download patch file Download diff file Expand all files Collapse all files

7
tools/perf/builtin-diff.c
View file

@ -231,9 +231,10 @@ int perf_diff__formula(struct hist_entry *he, struct hist_entry *pair,
}
static int hists__add_entry(struct hists *self,
struct addr_location *al, u64 period)
struct addr_location *al, u64 period,
u64 weight)
{
if (__hists__add_entry(self, al, NULL, period) != NULL)
if (__hists__add_entry(self, al, NULL, period, weight) != NULL)
return 0;
return -ENOMEM;
}
@ -255,7 +256,7 @@ static int diff__process_sample_event(struct perf_tool *tool __maybe_unused,
if (al.filtered)
return 0;
if (hists__add_entry(&evsel->hists, &al, sample->period)) {
if (hists__add_entry(&evsel->hists, &al, sample->period, sample->weight)) {
pr_warning("problem incrementing symbol period, skipping event\n");
return -1;
}