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perf diff: Switching the base hists to be pairs head

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Making the baseline hists to act as a pairs head.

So far we don't care which hists act as a pairs head, because we have
only 2 files to deal with and any of them is suitable to do the job.

But if we want to process more files, we need to pick up one hists to
act as pairs head, and the baseline hists is the most suitable.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
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/n/tip-cklmt2o4j87i9viz900245ae@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2012-12-01 21:15:40 +01:00 • committed by Arnaldo Carvalho de Melo
parent ec308426ea
commit 9af303e22a
2 changed files with 35 additions and 50 deletions
Download patch file Download diff file Expand all files Collapse all files

60
tools/perf/builtin-diff.c
View file

@ -167,34 +167,34 @@ double perf_diff__period_percent(struct hist_entry *he, u64 period)
double perf_diff__compute_delta(struct hist_entry *he, struct hist_entry *pair)
{
double new_percent = perf_diff__period_percent(he, he->stat.period);
double old_percent = perf_diff__period_percent(pair, pair->stat.period);
double old_percent = perf_diff__period_percent(he, he->stat.period);
double new_percent = perf_diff__period_percent(pair, pair->stat.period);
he->diff.period_ratio_delta = new_percent - old_percent;
he->diff.computed = true;
return he->diff.period_ratio_delta;
pair->diff.period_ratio_delta = new_percent - old_percent;
pair->diff.computed = true;
return pair->diff.period_ratio_delta;
}
double perf_diff__compute_ratio(struct hist_entry *he, struct hist_entry *pair)
{
double new_period = he->stat.period;
double old_period = pair->stat.period;
double old_period = he->stat.period ?: 1;
double new_period = pair->stat.period;
he->diff.computed = true;
he->diff.period_ratio = new_period / old_period;
return he->diff.period_ratio;
pair->diff.computed = true;
pair->diff.period_ratio = new_period / old_period;
return pair->diff.period_ratio;
}
s64 perf_diff__compute_wdiff(struct hist_entry *he, struct hist_entry *pair)
{
u64 new_period = he->stat.period;
u64 old_period = pair->stat.period;
u64 old_period = he->stat.period;
u64 new_period = pair->stat.period;
he->diff.computed = true;
he->diff.wdiff = new_period * compute_wdiff_w2 -
old_period * compute_wdiff_w1;
pair->diff.computed = true;
pair->diff.wdiff = new_period * compute_wdiff_w2 -
old_period * compute_wdiff_w1;
return he->diff.wdiff;
return pair->diff.wdiff;
}
static int formula_delta(struct hist_entry *he, struct hist_entry *pair,
@ -203,15 +203,15 @@ static int formula_delta(struct hist_entry *he, struct hist_entry *pair,
return scnprintf(buf, size,
"(%" PRIu64 " * 100 / %" PRIu64 ") - "
"(%" PRIu64 " * 100 / %" PRIu64 ")",
he->stat.period, he->hists->stats.total_period,
pair->stat.period, pair->hists->stats.total_period);
pair->stat.period, pair->hists->stats.total_period,
he->stat.period, he->hists->stats.total_period);
}
static int formula_ratio(struct hist_entry *he, struct hist_entry *pair,
char *buf, size_t size)
{
double new_period = he->stat.period;
double old_period = pair->stat.period;
double old_period = he->stat.period;
double new_period = pair->stat.period;
return scnprintf(buf, size, "%.0F / %.0F", new_period, old_period);
}
@ -219,8 +219,8 @@ static int formula_ratio(struct hist_entry *he, struct hist_entry *pair,
static int formula_wdiff(struct hist_entry *he, struct hist_entry *pair,
char *buf, size_t size)
{
u64 new_period = he->stat.period;
u64 old_period = pair->stat.period;
u64 old_period = he->stat.period;
u64 new_period = pair->stat.period;
return scnprintf(buf, size,
"(%" PRIu64 " * " "%" PRId64 ") - (%" PRIu64 " * " "%" PRId64 ")",
@ -462,23 +462,23 @@ static void hists__compute_resort(struct hists *hists)
}
}
static void hists__process(struct hists *old, struct hists *new)
static void hists__process(struct hists *base, struct hists *new)
{
hists__match(new, old);
hists__match(base, new);
if (show_baseline_only)
hists__baseline_only(new);
hists__baseline_only(base);
else
hists__link(new, old);
hists__link(base, new);
if (sort_compute) {
hists__precompute(new);
hists__compute_resort(new);
hists__precompute(base);
hists__compute_resort(base);
} else {
hists__output_resort(new);
hists__output_resort(base);
}
hists__fprintf(new, true, 0, 0, 0, stdout);
hists__fprintf(base, true, 0, 0, 0, stdout);
}
static void data_process(void)