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perf diff: Start moving to support matching more than two hists

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We want to match more than two hists, so that we can match more than two
perf.data files and moreover, match hist_entries (buckets) in multiple
events in a group.

So the "baseline"/"leader" will instead of a ->pair pointer, use a
list_head, that will link to the pairs and hists__match use it.

Following that perf_evlist__link will link the hists in its evsel
groups.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-2kbmzepoi544ygj9godseqpv@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
2012-10-25 14:42:45 -02:00
parent ff6f7778a6
commit b821c73253
4 changed files with 42 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
tools/perf/builtin-diff.c
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@@ -154,7 +154,7 @@ static double get_period_percent(struct hist_entry *he, u64 period)
double perf_diff__compute_delta(struct hist_entry *he)
{
struct hist_entry *pair = he->pair;
struct hist_entry *pair = hist_entry__next_pair(he);
double new_percent = get_period_percent(he, he->stat.period);
double old_percent = pair ? get_period_percent(pair, pair->stat.period) : 0.0;
@@ -165,7 +165,7 @@ double perf_diff__compute_delta(struct hist_entry *he)
double perf_diff__compute_ratio(struct hist_entry *he)
{
struct hist_entry *pair = he->pair;
struct hist_entry *pair = hist_entry__next_pair(he);
double new_period = he->stat.period;
double old_period = pair ? pair->stat.period : 0;
@@ -176,7 +176,7 @@ double perf_diff__compute_ratio(struct hist_entry *he)
s64 perf_diff__compute_wdiff(struct hist_entry *he)
{
struct hist_entry *pair = he->pair;
struct hist_entry *pair = hist_entry__next_pair(he);
u64 new_period = he->stat.period;
u64 old_period = pair ? pair->stat.period : 0;
@@ -193,7 +193,7 @@ s64 perf_diff__compute_wdiff(struct hist_entry *he)
static int formula_delta(struct hist_entry *he, char *buf, size_t size)
{
struct hist_entry *pair = he->pair;
struct hist_entry *pair = hist_entry__next_pair(he);
if (!pair)
return -1;
@@ -207,7 +207,7 @@ static int formula_delta(struct hist_entry *he, char *buf, size_t size)
static int formula_ratio(struct hist_entry *he, char *buf, size_t size)
{
struct hist_entry *pair = he->pair;
struct hist_entry *pair = hist_entry__next_pair(he);
double new_period = he->stat.period;
double old_period = pair ? pair->stat.period : 0;
@@ -219,7 +219,7 @@ static int formula_ratio(struct hist_entry *he, char *buf, size_t size)
static int formula_wdiff(struct hist_entry *he, char *buf, size_t size)
{
struct hist_entry *pair = he->pair;
struct hist_entry *pair = hist_entry__next_pair(he);
u64 new_period = he->stat.period;
u64 old_period = pair ? pair->stat.period : 0;
@@ -359,8 +359,11 @@ static void hists__match(struct hists *older, struct hists *newer)
struct rb_node *nd;
for (nd = rb_first(&newer->entries); nd; nd = rb_next(nd)) {
struct hist_entry *pos = rb_entry(nd, struct hist_entry, rb_node);
pos->pair = hists__find_entry(older, pos);
struct hist_entry *pos = rb_entry(nd, struct hist_entry, rb_node),
*pair = hists__find_entry(older, pos);
if (pair)
hist__entry_add_pair(pos, pair);
}
}
@@ -402,7 +405,7 @@ static void hists__baseline_only(struct hists *hists)
struct hist_entry *he = rb_entry(next, struct hist_entry, rb_node);
next = rb_next(&he->rb_node);
if (!he->pair) {
if (!hist_entry__next_pair(he)) {
rb_erase(&he->rb_node, &hists->entries);
hist_entry__free(he);
}