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Diffstat (limited to 'tools/perf/util/hist.c')
-rw-r--r--tools/perf/util/hist.c54
1 files changed, 53 insertions, 1 deletions
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index f9eb95bf3938..7ace7a10054d 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -19,6 +19,7 @@
#include <math.h>
#include <inttypes.h>
#include <sys/param.h>
+#include <linux/time64.h>
static bool hists__filter_entry_by_dso(struct hists *hists,
struct hist_entry *he);
@@ -192,6 +193,7 @@ void hists__calc_col_len(struct hists *hists, struct hist_entry *h)
hists__new_col_len(hists, HISTC_MEM_LVL, 21 + 3);
hists__new_col_len(hists, HISTC_LOCAL_WEIGHT, 12);
hists__new_col_len(hists, HISTC_GLOBAL_WEIGHT, 12);
+ hists__new_col_len(hists, HISTC_TIME, 12);
if (h->srcline) {
len = MAX(strlen(h->srcline), strlen(sort_srcline.se_header));
@@ -246,6 +248,14 @@ static void he_stat__add_cpumode_period(struct he_stat *he_stat,
}
}
+static long hist_time(unsigned long htime)
+{
+ unsigned long time_quantum = symbol_conf.time_quantum;
+ if (time_quantum)
+ return (htime / time_quantum) * time_quantum;
+ return htime;
+}
+
static void he_stat__add_period(struct he_stat *he_stat, u64 period,
u64 weight)
{
@@ -426,6 +436,13 @@ static int hist_entry__init(struct hist_entry *he,
goto err_rawdata;
}
+ if (symbol_conf.res_sample) {
+ he->res_samples = calloc(sizeof(struct res_sample),
+ symbol_conf.res_sample);
+ if (!he->res_samples)
+ goto err_srcline;
+ }
+
INIT_LIST_HEAD(&he->pairs.node);
thread__get(he->thread);
he->hroot_in = RB_ROOT_CACHED;
@@ -436,6 +453,9 @@ static int hist_entry__init(struct hist_entry *he,
return 0;
+err_srcline:
+ free(he->srcline);
+
err_rawdata:
free(he->raw_data);
@@ -593,6 +613,32 @@ out:
return he;
}
+static unsigned random_max(unsigned high)
+{
+ unsigned thresh = -high % high;
+ for (;;) {
+ unsigned r = random();
+ if (r >= thresh)
+ return r % high;
+ }
+}
+
+static void hists__res_sample(struct hist_entry *he, struct perf_sample *sample)
+{
+ struct res_sample *r;
+ int j;
+
+ if (he->num_res < symbol_conf.res_sample) {
+ j = he->num_res++;
+ } else {
+ j = random_max(symbol_conf.res_sample);
+ }
+ r = &he->res_samples[j];
+ r->time = sample->time;
+ r->cpu = sample->cpu;
+ r->tid = sample->tid;
+}
+
static struct hist_entry*
__hists__add_entry(struct hists *hists,
struct addr_location *al,
@@ -635,10 +681,13 @@ __hists__add_entry(struct hists *hists,
.raw_data = sample->raw_data,
.raw_size = sample->raw_size,
.ops = ops,
+ .time = hist_time(sample->time),
}, *he = hists__findnew_entry(hists, &entry, al, sample_self);
if (!hists->has_callchains && he && he->callchain_size != 0)
hists->has_callchains = true;
+ if (he && symbol_conf.res_sample)
+ hists__res_sample(he, sample);
return he;
}
@@ -1062,8 +1111,10 @@ int hist_entry_iter__add(struct hist_entry_iter *iter, struct addr_location *al,
err = sample__resolve_callchain(iter->sample, &callchain_cursor, &iter->parent,
iter->evsel, al, max_stack_depth);
- if (err)
+ if (err) {
+ map__put(alm);
return err;
+ }
err = iter->ops->prepare_entry(iter, al);
if (err)
@@ -1162,6 +1213,7 @@ void hist_entry__delete(struct hist_entry *he)
mem_info__zput(he->mem_info);
}
+ zfree(&he->res_samples);
zfree(&he->stat_acc);
free_srcline(he->srcline);
if (he->srcfile && he->srcfile[0])