Commit 307cbb92 authored by David Ahern's avatar David Ahern Committed by Arnaldo Carvalho de Melo

perf evsel: Add option to limit stack depth in callchain dumps

Option is used by upcoming timehist command.
Signed-off-by: default avatarDavid Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1375930261-77273-12-git-send-email-dsahern@gmail.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent b0b35f01
......@@ -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");
......
......@@ -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 {
......
......@@ -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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