perf evsel: Add option to limit stack depth in callchain dumps
Option is used by upcoming timehist command. Signed-off-by: David 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.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -402,7 +402,8 @@ static void print_sample_bts(union perf_event *event,
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else
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printf("\n");
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perf_evsel__print_ip(evsel, event, sample, machine,
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output[attr->type].print_ip_opts);
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output[attr->type].print_ip_opts,
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PERF_MAX_STACK_DEPTH);
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}
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printf(" => ");
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@ -444,7 +445,8 @@ static void process_event(union perf_event *event, struct perf_sample *sample,
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printf("\n");
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perf_evsel__print_ip(evsel, event, sample, machine,
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output[attr->type].print_ip_opts);
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output[attr->type].print_ip_opts,
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PERF_MAX_STACK_DEPTH);
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}
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printf("\n");
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@ -1489,7 +1489,7 @@ struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
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void perf_evsel__print_ip(struct perf_evsel *evsel, union perf_event *event,
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struct perf_sample *sample, struct machine *machine,
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unsigned int print_opts)
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unsigned int print_opts, unsigned int stack_depth)
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{
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struct addr_location al;
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struct callchain_cursor_node *node;
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@ -1517,7 +1517,7 @@ void perf_evsel__print_ip(struct perf_evsel *evsel, union perf_event *event,
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}
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callchain_cursor_commit(&callchain_cursor);
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while (1) {
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while (stack_depth) {
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node = callchain_cursor_current(&callchain_cursor);
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if (!node)
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break;
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@ -1544,6 +1544,8 @@ void perf_evsel__print_ip(struct perf_evsel *evsel, union perf_event *event,
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printf("\n");
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callchain_cursor_advance(&callchain_cursor);
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stack_depth--;
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}
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} else {
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@ -109,7 +109,7 @@ struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
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void perf_evsel__print_ip(struct perf_evsel *evsel, union perf_event *event,
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struct perf_sample *sample, struct machine *machine,
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unsigned int print_opts);
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unsigned int print_opts, unsigned int stack_depth);
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int perf_session__cpu_bitmap(struct perf_session *session,
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const char *cpu_list, unsigned long *cpu_bitmap);
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