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authorArnaldo Carvalho de Melo <acme@redhat.com>2010-05-09 20:02:23 +0400
committerArnaldo Carvalho de Melo <acme@redhat.com>2010-05-09 20:10:39 +0400
commit28e2a106d16046ca792722795f809e3f80a5af80 (patch)
treec84149ddf45d02044187fe4511cead93d009b6ee /tools
parent39d1e1b1e26dc84d40bf2792287d0d61e44b57df (diff)
downloadlinux-28e2a106d16046ca792722795f809e3f80a5af80.tar.xz
perf hist: Simplify the insertion of new hist_entry instances
And with that fix at least one bug: The first hit for an entry, the one that calls malloc to create a new instance in __perf_session__add_hist_entry, wasn't adding the count to the per cpumode (PERF_RECORD_MISC_USER, etc) total variable. Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/builtin-annotate.c9
-rw-r--r--tools/perf/builtin-diff.c14
-rw-r--r--tools/perf/builtin-report.c12
-rw-r--r--tools/perf/util/hist.c36
-rw-r--r--tools/perf/util/hist.h5
5 files changed, 32 insertions, 44 deletions
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index ee154b58772b..c7ac45a59ed5 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -72,8 +72,6 @@ static int annotate__hist_hit(struct hist_entry *he, u64 ip)
struct sym_priv *priv;
struct sym_hist *h;
- he->count++;
-
if (!sym || !he->ms.map)
return 0;
@@ -99,9 +97,8 @@ static int annotate__hist_hit(struct hist_entry *he, u64 ip)
}
static int perf_session__add_hist_entry(struct perf_session *self,
- struct addr_location *al, u64 count)
+ struct addr_location *al)
{
- bool hit;
struct hist_entry *he;
if (sym_hist_filter != NULL &&
@@ -115,7 +112,7 @@ static int perf_session__add_hist_entry(struct perf_session *self,
return 0;
}
- he = __perf_session__add_hist_entry(&self->hists, al, NULL, count, &hit);
+ he = __perf_session__add_hist_entry(&self->hists, al, NULL, 1);
if (he == NULL)
return -ENOMEM;
@@ -135,7 +132,7 @@ static int process_sample_event(event_t *event, struct perf_session *session)
return -1;
}
- if (!al.filtered && perf_session__add_hist_entry(session, &al, 1)) {
+ if (!al.filtered && perf_session__add_hist_entry(session, &al)) {
pr_warning("problem incrementing symbol count, "
"skipping event\n");
return -1;
diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 4cce68f23686..613a5c4f6d83 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -25,17 +25,9 @@ static bool show_displacement;
static int perf_session__add_hist_entry(struct perf_session *self,
struct addr_location *al, u64 count)
{
- bool hit;
- struct hist_entry *he = __perf_session__add_hist_entry(&self->hists,
- al, NULL,
- count, &hit);
- if (he == NULL)
- return -ENOMEM;
-
- if (hit)
- __perf_session__add_count(he, al, count);
-
- return 0;
+ if (__perf_session__add_hist_entry(&self->hists, al, NULL, count) != NULL)
+ return 0;
+ return -ENOMEM;
}
static int diff__process_sample_event(event_t *event, struct perf_session *session)
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 3a70c5807c04..5e2f47f88ec6 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -82,7 +82,6 @@ static int perf_session__add_hist_entry(struct perf_session *self,
{
struct map_symbol *syms = NULL;
struct symbol *parent = NULL;
- bool hit;
int err = -ENOMEM;
struct hist_entry *he;
struct event_stat_id *stats;
@@ -103,19 +102,12 @@ static int perf_session__add_hist_entry(struct perf_session *self,
if (stats == NULL)
goto out_free_syms;
he = __perf_session__add_hist_entry(&stats->hists, al, parent,
- data->period, &hit);
+ data->period);
if (he == NULL)
goto out_free_syms;
-
- if (hit)
- __perf_session__add_count(he, al, data->period);
-
err = 0;
- if (symbol_conf.use_callchain) {
- if (!hit)
- callchain_init(he->callchain);
+ if (symbol_conf.use_callchain)
err = append_chain(he->callchain, data->callchain, syms);
- }
out_free_syms:
free(syms);
return err;
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index ad6b22dde27f..e0c8a722e11f 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -8,13 +8,10 @@ struct callchain_param callchain_param = {
.min_percent = 0.5
};
-void __perf_session__add_count(struct hist_entry *he,
- struct addr_location *al,
- u64 count)
+static void perf_session__add_cpumode_count(struct hist_entry *he,
+ unsigned int cpumode, u64 count)
{
- he->count += count;
-
- switch (al->cpumode) {
+ switch (cpumode) {
case PERF_RECORD_MISC_KERNEL:
he->count_sys += count;
break;
@@ -36,10 +33,24 @@ void __perf_session__add_count(struct hist_entry *he,
* histogram, sorted on item, collects counts
*/
+static struct hist_entry *hist_entry__new(struct hist_entry *template)
+{
+ size_t callchain_size = symbol_conf.use_callchain ? sizeof(struct callchain_node) : 0;
+ struct hist_entry *self = malloc(sizeof(*self) + callchain_size);
+
+ if (self != NULL) {
+ *self = *template;
+ if (symbol_conf.use_callchain)
+ callchain_init(self->callchain);
+ }
+
+ return self;
+}
+
struct hist_entry *__perf_session__add_hist_entry(struct rb_root *hists,
struct addr_location *al,
struct symbol *sym_parent,
- u64 count, bool *hit)
+ u64 count)
{
struct rb_node **p = &hists->rb_node;
struct rb_node *parent = NULL;
@@ -64,8 +75,8 @@ struct hist_entry *__perf_session__add_hist_entry(struct rb_root *hists,
cmp = hist_entry__cmp(&entry, he);
if (!cmp) {
- *hit = true;
- return he;
+ he->count += count;
+ goto out;
}
if (cmp < 0)
@@ -74,14 +85,13 @@ struct hist_entry *__perf_session__add_hist_entry(struct rb_root *hists,
p = &(*p)->rb_right;
}
- he = malloc(sizeof(*he) + (symbol_conf.use_callchain ?
- sizeof(struct callchain_node) : 0));
+ he = hist_entry__new(&entry);
if (!he)
return NULL;
- *he = entry;
rb_link_node(&he->rb_node, parent, p);
rb_insert_color(&he->rb_node, hists);
- *hit = false;
+out:
+ perf_session__add_cpumode_count(he, al->cpumode, count);
return he;
}
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 9df1c340ec92..b49013adb34b 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -12,13 +12,10 @@ struct addr_location;
struct symbol;
struct rb_root;
-void __perf_session__add_count(struct hist_entry *he,
- struct addr_location *al,
- u64 count);
struct hist_entry *__perf_session__add_hist_entry(struct rb_root *hists,
struct addr_location *al,
struct symbol *parent,
- u64 count, bool *hit);
+ u64 count);
extern int64_t hist_entry__cmp(struct hist_entry *, struct hist_entry *);
extern int64_t hist_entry__collapse(struct hist_entry *, struct hist_entry *);
int hist_entry__fprintf(struct hist_entry *self,