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perf diff: Change formula methods to work with pair directly

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Changing formula methods to operate over hist entry and its pair
directly. This makes the code more obvious and readable, instead of all
time checking for pair being != NULL.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Namhyung Kim <namhyung@kernel.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/1354110769-2998-7-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2012-11-28 14:52:41 +01:00 committed by Arnaldo Carvalho de Melo
parent 05472daa4d
commit f4c8bae192
3 changed files with 19 additions and 24 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

35
tools/perf/builtin-diff.c
View file

@ -184,13 +184,9 @@ s64 perf_diff__compute_wdiff(struct hist_entry *he, struct hist_entry *pair)
return he->diff.wdiff;
}
static int formula_delta(struct hist_entry *he, char *buf, size_t size)
static int formula_delta(struct hist_entry *he, struct hist_entry *pair,
char *buf, size_t size)
{
struct hist_entry *pair = hist_entry__next_pair(he);
if (!pair)
return -1;
return scnprintf(buf, size,
"(%" PRIu64 " * 100 / %" PRIu64 ") - "
"(%" PRIu64 " * 100 / %" PRIu64 ")",
@ -198,41 +194,36 @@ static int formula_delta(struct hist_entry *he, char *buf, size_t size)
pair->stat.period, pair->hists->stats.total_period);
}
static int formula_ratio(struct hist_entry *he, char *buf, size_t size)
static int formula_ratio(struct hist_entry *he, struct hist_entry *pair,
char *buf, size_t size)
{
struct hist_entry *pair = hist_entry__next_pair(he);
double new_period = he->stat.period;
double old_period = pair ? pair->stat.period : 0;
if (!pair)
return -1;
double old_period = pair->stat.period;
return scnprintf(buf, size, "%.0F / %.0F", new_period, old_period);
}
static int formula_wdiff(struct hist_entry *he, char *buf, size_t size)
static int formula_wdiff(struct hist_entry *he, struct hist_entry *pair,
char *buf, size_t size)
{
struct hist_entry *pair = hist_entry__next_pair(he);
u64 new_period = he->stat.period;
u64 old_period = pair ? pair->stat.period : 0;
if (!pair)
return -1;
u64 old_period = pair->stat.period;
return scnprintf(buf, size,
"(%" PRIu64 " * " "%" PRId64 ") - (%" PRIu64 " * " "%" PRId64 ")",
new_period, compute_wdiff_w2, old_period, compute_wdiff_w1);
}
int perf_diff__formula(char *buf, size_t size, struct hist_entry *he)
int perf_diff__formula(struct hist_entry *he, struct hist_entry *pair,
char *buf, size_t size)
{
switch (compute) {
case COMPUTE_DELTA:
return formula_delta(he, buf, size);
return formula_delta(he, pair, buf, size);
case COMPUTE_RATIO:
return formula_ratio(he, buf, size);
return formula_ratio(he, pair, buf, size);
case COMPUTE_WEIGHTED_DIFF:
return formula_wdiff(he, buf, size);
return formula_wdiff(he, pair, buf, size);
default:
BUG_ON(1);
}

5
tools/perf/ui/hist.c
View file

@ -389,10 +389,13 @@ static int hpp__width_formula(struct perf_hpp *hpp __maybe_unused)
static int hpp__entry_formula(struct perf_hpp *hpp, struct hist_entry *he)
{
struct hist_entry *pair = hist_entry__next_pair(he);
const char *fmt = symbol_conf.field_sep ? "%s" : "%-70s";
char buf[96] = " ";
perf_diff__formula(buf, sizeof(buf), he);
if (pair)
perf_diff__formula(he, pair, buf, sizeof(buf));
return scnprintf(hpp->buf, hpp->size, fmt, buf);
}

3
tools/perf/util/hist.h
View file

@ -229,6 +229,7 @@ unsigned int hists__sort_list_width(struct hists *self);
double perf_diff__compute_delta(struct hist_entry *he, struct hist_entry *pair);
double perf_diff__compute_ratio(struct hist_entry *he, struct hist_entry *pair);
s64 perf_diff__compute_wdiff(struct hist_entry *he, struct hist_entry *pair);
int perf_diff__formula(char *buf, size_t size, struct hist_entry *he);
int perf_diff__formula(struct hist_entry *he, struct hist_entry *pair,
char *buf, size_t size);
double perf_diff__period_percent(struct hist_entry *he, u64 period);
#endif /* __PERF_HIST_H */