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perf hists: Add support for accumulated stat of hist entry

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Maintain accumulated stat information in hist_entry->stat_acc if
symbol_conf.cumulate_callchain is set.  Fields in ->stat_acc have same
vaules initially, and will be updated as callchain is processed later.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arun Sharma <asharma@fb.com>
Tested-by: Rodrigo Campos <rodrigo@sdfg.com.ar>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/1401335910-16832-4-git-send-email-namhyung@kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
This commit is contained in:
Namhyung Kim 2012-09-11 13:15:07 +09:00 committed by Jiri Olsa
parent 69bcb019fc
commit f8be1c8c48
3 changed files with 28 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
tools/perf/util/hist.c
View File

@ -232,6 +232,8 @@ static bool hists__decay_entry(struct hists *hists, struct hist_entry *he)
return true;
he_stat__decay(&he->stat);
if (symbol_conf.cumulate_callchain)
he_stat__decay(he->stat_acc);
diff = prev_period - he->stat.period;
@ -279,12 +281,26 @@ void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel)
static struct hist_entry *hist_entry__new(struct hist_entry *template)
{
size_t callchain_size = symbol_conf.use_callchain ? sizeof(struct callchain_root) : 0;
struct hist_entry *he = zalloc(sizeof(*he) + callchain_size);
size_t callchain_size = 0;
struct hist_entry *he;
if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain)
callchain_size = sizeof(struct callchain_root);
he = zalloc(sizeof(*he) + callchain_size);
if (he != NULL) {
*he = *template;
if (symbol_conf.cumulate_callchain) {
he->stat_acc = malloc(sizeof(he->stat));
if (he->stat_acc == NULL) {
free(he);
return NULL;
}
memcpy(he->stat_acc, &he->stat, sizeof(he->stat));
}
if (he->ms.map)
he->ms.map->referenced = true;
@ -296,6 +312,7 @@ static struct hist_entry *hist_entry__new(struct hist_entry *template)
*/
he->branch_info = malloc(sizeof(*he->branch_info));
if (he->branch_info == NULL) {
free(he->stat_acc);
free(he);
return NULL;
}
@ -359,6 +376,8 @@ static struct hist_entry *add_hist_entry(struct hists *hists,
if (!cmp) {
he_stat__add_period(&he->stat, period, weight);
if (symbol_conf.cumulate_callchain)
he_stat__add_period(he->stat_acc, period, weight);
/*
* This mem info was allocated from sample__resolve_mem
@ -394,6 +413,8 @@ static struct hist_entry *add_hist_entry(struct hists *hists,
rb_insert_color(&he->rb_node_in, hists->entries_in);
out:
he_stat__add_cpumode_period(&he->stat, al->cpumode, period);
if (symbol_conf.cumulate_callchain)
he_stat__add_cpumode_period(he->stat_acc, al->cpumode, period);
return he;
}
@ -768,6 +789,7 @@ void hist_entry__free(struct hist_entry *he)
{
zfree(&he->branch_info);
zfree(&he->mem_info);
zfree(&he->stat_acc);
free_srcline(he->srcline);
free(he);
}
@ -793,6 +815,8 @@ static bool hists__collapse_insert_entry(struct hists *hists __maybe_unused,
if (!cmp) {
he_stat__add_stat(&iter->stat, &he->stat);
if (symbol_conf.cumulate_callchain)
he_stat__add_stat(iter->stat_acc, he->stat_acc);
if (symbol_conf.use_callchain) {
callchain_cursor_reset(&callchain_cursor);

1
tools/perf/util/sort.h
View File

@ -82,6 +82,7 @@ struct hist_entry {
struct list_head head;
} pairs;
struct he_stat stat;
struct he_stat *stat_acc;
struct map_symbol ms;
struct thread *thread;
struct comm *comm;

1
tools/perf/util/symbol.h
View File

@ -109,6 +109,7 @@ struct symbol_conf {
show_nr_samples,
show_total_period,
use_callchain,
cumulate_callchain,
exclude_other,
show_cpu_utilization,
initialized,