Commit-ID: 307cbb92aa2bdc9eed7c74409ff4d5fc9135b4e2
Gitweb: http://git.kernel.org/tip/307cbb92aa2bdc9eed7c74409ff4d5fc9135b4e2
Author: David Ahern <dsahern@xxxxxxxxx>
AuthorDate: Wed, 7 Aug 2013 22:50:53 -0400
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Mon, 12 Aug 2013 10:31:08 -0300
perf evsel: Add option to limit stack depth in callchain dumps
Option is used by upcoming timehist command.
Signed-off-by: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1375930261-77273-12-git-send-email-dsahern@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/builtin-script.c | 6 ++++--
tools/perf/util/session.c | 6 ++++--
tools/perf/util/session.h | 2 +-
3 files changed, 9 insertions(+), 5 deletions(-)
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index ee5d6f8..33b2d83 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -402,7 +402,8 @@ static void print_sample_bts(union perf_event *event,
else
printf("\n");
perf_evsel__print_ip(evsel, event, sample, machine,
- output[attr->type].print_ip_opts);
+ output[attr->type].print_ip_opts,
+ PERF_MAX_STACK_DEPTH);
}
printf(" => ");
@@ -444,7 +445,8 @@ static void process_event(union perf_event *event, struct perf_sample *sample,
printf("\n");
perf_evsel__print_ip(evsel, event, sample, machine,
- output[attr->type].print_ip_opts);
+ output[attr->type].print_ip_opts,
+ PERF_MAX_STACK_DEPTH);
}
printf("\n");
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 0d895e7..5a89964 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1489,7 +1489,7 @@ struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
void perf_evsel__print_ip(struct perf_evsel *evsel, union perf_event *event,
struct perf_sample *sample, struct machine *machine,
- unsigned int print_opts)
+ unsigned int print_opts, unsigned int stack_depth)
{
struct addr_location al;
struct callchain_cursor_node *node;
@@ -1517,7 +1517,7 @@ void perf_evsel__print_ip(struct perf_evsel *evsel, union perf_event *event,
}
callchain_cursor_commit(&callchain_cursor);
- while (1) {
+ while (stack_depth) {
node = callchain_cursor_current(&callchain_cursor);
if (!node)
break;
@@ -1544,6 +1544,8 @@ void perf_evsel__print_ip(struct perf_evsel *evsel, union perf_event *event,
printf("\n");
callchain_cursor_advance(&callchain_cursor);
+
+ stack_depth--;
}
} else {
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index 7c00ccb..3aa75fb 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -109,7 +109,7 @@ struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
void perf_evsel__print_ip(struct perf_evsel *evsel, union perf_event *event,
struct perf_sample *sample, struct machine *machine,
- unsigned int print_opts);
+ unsigned int print_opts, unsigned int stack_depth);
int perf_session__cpu_bitmap(struct perf_session *session,
const char *cpu_list, unsigned long *cpu_bitmap);
--
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