perf tools: Add callback function to hist_entry_iter
The new ->add_entry_cb() will be called after an entry was added to
the histogram. It's used for code sharing between perf report and
perf top. Note that ops->add_*_entry() should set iter->he properly
in order to call the ->add_entry_cb.
Also pass @arg to the callback function. It'll be used by perf top
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/87k393g999.fsf@sejong.aot.lge.com
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index c6f5f52..5a0a4b2 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -517,27 +517,16 @@
}
static int
-iter_finish_mem_entry(struct hist_entry_iter *iter, struct addr_location *al)
+iter_finish_mem_entry(struct hist_entry_iter *iter,
+ struct addr_location *al __maybe_unused)
{
struct perf_evsel *evsel = iter->evsel;
struct hist_entry *he = iter->he;
- struct mem_info *mx;
int err = -EINVAL;
if (he == NULL)
goto out;
- if (ui__has_annotation()) {
- err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
- if (err)
- goto out;
-
- mx = he->mem_info;
- err = addr_map_symbol__inc_samples(&mx->daddr, evsel->idx);
- if (err)
- goto out;
- }
-
hists__inc_nr_samples(&evsel->hists, he->filtered);
err = hist_entry__append_callchain(he, iter->sample);
@@ -575,6 +564,9 @@
iter_add_single_branch_entry(struct hist_entry_iter *iter __maybe_unused,
struct addr_location *al __maybe_unused)
{
+ /* to avoid calling callback function */
+ iter->he = NULL;
+
return 0;
}
@@ -599,7 +591,7 @@
static int
iter_add_next_branch_entry(struct hist_entry_iter *iter, struct addr_location *al)
{
- struct branch_info *bi, *bx;
+ struct branch_info *bi;
struct perf_evsel *evsel = iter->evsel;
struct hist_entry *he = NULL;
int i = iter->curr;
@@ -619,17 +611,6 @@
if (he == NULL)
return -ENOMEM;
- if (ui__has_annotation()) {
- bx = he->branch_info;
- err = addr_map_symbol__inc_samples(&bx->from, evsel->idx);
- if (err)
- goto out;
-
- err = addr_map_symbol__inc_samples(&bx->to, evsel->idx);
- if (err)
- goto out;
- }
-
hists__inc_nr_samples(&evsel->hists, he->filtered);
out:
@@ -673,9 +654,9 @@
}
static int
-iter_finish_normal_entry(struct hist_entry_iter *iter, struct addr_location *al)
+iter_finish_normal_entry(struct hist_entry_iter *iter,
+ struct addr_location *al __maybe_unused)
{
- int err;
struct hist_entry *he = iter->he;
struct perf_evsel *evsel = iter->evsel;
struct perf_sample *sample = iter->sample;
@@ -685,12 +666,6 @@
iter->he = NULL;
- if (ui__has_annotation()) {
- err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
- if (err)
- return err;
- }
-
hists__inc_nr_samples(&evsel->hists, he->filtered);
return hist_entry__append_callchain(he, sample);
@@ -746,13 +721,6 @@
*/
callchain_cursor_commit(&callchain_cursor);
- /*
- * The iter->he will be over-written after ->add_next_entry()
- * called so inc stats for the original entry now.
- */
- if (ui__has_annotation())
- err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
-
hists__inc_nr_samples(&evsel->hists, he->filtered);
return err;
@@ -802,8 +770,11 @@
* It's possible that it has cycles or recursive calls.
*/
for (i = 0; i < iter->curr; i++) {
- if (hist_entry__cmp(he_cache[i], &he_tmp) == 0)
+ if (hist_entry__cmp(he_cache[i], &he_tmp) == 0) {
+ /* to avoid calling callback function */
+ iter->he = NULL;
return 0;
+ }
}
he = __hists__add_entry(&evsel->hists, al, iter->parent, NULL, NULL,
@@ -863,7 +834,7 @@
int hist_entry_iter__add(struct hist_entry_iter *iter, struct addr_location *al,
struct perf_evsel *evsel, struct perf_sample *sample,
- int max_stack_depth)
+ int max_stack_depth, void *arg)
{
int err, err2;
@@ -883,10 +854,22 @@
if (err)
goto out;
+ if (iter->he && iter->add_entry_cb) {
+ err = iter->add_entry_cb(iter, al, true, arg);
+ if (err)
+ goto out;
+ }
+
while (iter->ops->next_entry(iter, al)) {
err = iter->ops->add_next_entry(iter, al);
if (err)
break;
+
+ if (iter->he && iter->add_entry_cb) {
+ err = iter->add_entry_cb(iter, al, false, arg);
+ if (err)
+ goto out;
+ }
}
out: