hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

perf hists: Resort hist entries using group members for output 

When event group is enabled, sorting hist entries on periods for output
should consider groups members' period also.  To do that, build period
table using link/pair information and compare the table.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1358845787-1350-6-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2013-01-22 18:09:33 +09:00 committed by Arnaldo Carvalho de Melo
parent 6e1f601a10
commit 29d720ed5f
2 changed files with 60 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
tools/perf/util/evsel.h
View File

@ -79,6 +79,8 @@ struct perf_evsel {
char *group_name;
};
#define hists_to_evsel(h) container_of(h, struct perf_evsel, hists)
struct cpu_map;
struct thread_map;
struct perf_evlist;

59
tools/perf/util/hist.c
View File

@ -4,6 +4,7 @@
#include "hist.h"
#include "session.h"
#include "sort.h"
#include "evsel.h"
#include <math.h>
static bool hists__filter_entry_by_dso(struct hists *hists,
@ -540,6 +541,62 @@ void hists__collapse_resort_threaded(struct hists *hists)
* reverse the map, sort on period.
*/
static int period_cmp(u64 period_a, u64 period_b)
{
if (period_a > period_b)
return 1;
if (period_a < period_b)
return -1;
return 0;
}
static int hist_entry__sort_on_period(struct hist_entry *a,
struct hist_entry *b)
{
int ret;
int i, nr_members;
struct perf_evsel *evsel;
struct hist_entry *pair;
u64 *periods_a, *periods_b;
ret = period_cmp(a->stat.period, b->stat.period);
if (ret || !symbol_conf.event_group)
return ret;
evsel = hists_to_evsel(a->hists);
nr_members = evsel->nr_members;
if (nr_members <= 1)
return ret;
periods_a = zalloc(sizeof(periods_a) * nr_members);
periods_b = zalloc(sizeof(periods_b) * nr_members);
if (!periods_a || !periods_b)
goto out;
list_for_each_entry(pair, &a->pairs.head, pairs.node) {
evsel = hists_to_evsel(pair->hists);
periods_a[perf_evsel__group_idx(evsel)] = pair->stat.period;
}
list_for_each_entry(pair, &b->pairs.head, pairs.node) {
evsel = hists_to_evsel(pair->hists);
periods_b[perf_evsel__group_idx(evsel)] = pair->stat.period;
}
for (i = 1; i < nr_members; i++) {
ret = period_cmp(periods_a[i], periods_b[i]);
if (ret)
break;
}
out:
free(periods_a);
free(periods_b);
return ret;
}
static void __hists__insert_output_entry(struct rb_root *entries,
struct hist_entry *he,
u64 min_callchain_hits)
@ -556,7 +613,7 @@ static void __hists__insert_output_entry(struct rb_root *entries,
parent = *p;
iter = rb_entry(parent, struct hist_entry, rb_node);
if (he->stat.period > iter->stat.period)
if (hist_entry__sort_on_period(he, iter) > 0)
p = &(*p)->rb_left;
else
p = &(*p)->rb_right;