Enable type annotation when the 'type' sort key is used.
It shows type of variables the samples access at the moment.
Users can see which types are accessed frequently.
$ perf report -s dso,type --stdio
...
# Overhead Shared Object Data Type
# ........ ................. .........
#
35.47% [kernel.kallsyms] (unknown)
1.62% [kernel.kallsyms] struct sched_entry
1.23% [kernel.kallsyms] struct cfs_rq
0.83% [kernel.kallsyms] struct task_struct
0.34% [kernel.kallsyms] struct list_head
0.30% [kernel.kallsyms] struct mem_cgroup
...
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
---
tools/perf/builtin-report.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 17fb171e898b..ed76152c8db8 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -96,6 +96,7 @@ struct report {
bool stitch_lbr;
bool disable_order;
bool skip_empty;
+ bool data_type;
int max_stack;
struct perf_read_values show_threads_values;
const char *pretty_printing_style;
@@ -170,7 +171,7 @@ static int hist_iter__report_callback(struct hist_entry_iter *iter,
struct mem_info *mi;
struct branch_info *bi;
- if (!ui__has_annotation() && !rep->symbol_ipc)
+ if (!ui__has_annotation() && !rep->symbol_ipc && !rep->data_type)
return 0;
if (sort__mode == SORT_MODE__BRANCH) {
@@ -1619,6 +1620,16 @@ int cmd_report(int argc, const char **argv)
sort_order = NULL;
}
+ if (sort_order && strstr(sort_order, "type")) {
+ report.data_type = true;
+ annotate_opts.annotate_src = false;
+
+#ifndef HAVE_DWARF_GETLOCATIONS_SUPPORT
+ pr_err("Error: Data type profiling is disabled due to missing DWARF support\n");
+ goto error;
+#endif
+ }
+
if (strcmp(input_name, "-") != 0)
setup_browser(true);
else
@@ -1677,7 +1688,7 @@ int cmd_report(int argc, const char **argv)
* so don't allocate extra space that won't be used in the stdio
* implementation.
*/
- if (ui__has_annotation() || report.symbol_ipc ||
+ if (ui__has_annotation() || report.symbol_ipc || report.data_type ||
report.total_cycles_mode) {
ret = symbol__annotation_init();
if (ret < 0)
--
2.43.0.472.g3155946c3a-goog
|