perf script: Set up output options for in-stream attributes (7ea95727) · Commits · 戴 / test

Attributes (struct perf_event_attr) are recorded separately in the perf.data file. perf script uses them to set up output options. However attributes can also be in the event stream, for example when the input is a pipe (i.e. live mode). This patch makes perf script process in-stream attributes in the same way as on-file attributes. Here is an example: Before this patch: $ perf record uname | perf script Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.015 MB (null) (~655 samples) ] :4220 4220 [-01] 2933367.838906: cycles: :4220 4220 [-01] 2933367.838910: cycles: :4220 4220 [-01] 2933367.838912: cycles: :4220 4220 [-01] 2933367.838914: cycles: :4220 4220 [-01] 2933367.838916: cycles: :4220 4220 [-01] 2933367.838918: cycles: uname 4220 [-01] 2933367.838938: cycles: uname 4220 [-01] 2933367.839207: cycles: After this patch: $ perf record uname | perf script Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.015 MB (null) (~655 samples) ] :4582 4582 2933425.707724: cycles: ffffffff81043ffa native_write_msr_safe ([kernel.kallsyms]) :4582 4582 2933425.707728: cycles: ffffffff81043ffa native_write_msr_safe ([kernel.kallsyms]) :4582 4582 2933425.707730: cycles: ffffffff81043ffa native_write_msr_safe ([kernel.kallsyms]) :4582 4582 2933425.707732: cycles: ffffffff81043ffa native_write_msr_safe ([kernel.kallsyms]) :4582 4582 2933425.707734: cycles: ffffffff81043ffa native_write_msr_safe ([kernel.kallsyms]) :4582 4582 2933425.707736: cycles: ffffffff81309a24 memcpy ([kernel.kallsyms]) uname 4582 2933425.707760: cycles: ffffffff8109c1c7 enqueue_task_fair ([kernel.kallsyms]) uname 4582 2933425.707978: cycles: ffffffff81308457 clear_page_c ([kernel.kallsyms]) Signed-off-by:

Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1383313899-15987-3-git-send-email-adrian.hunter@intel.com Signed-off-by:

Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-script.c

+48 −16

Original line number	Diff line number	Diff line
		@@ -229,6 +229,24 @@ static int perf_evsel__check_attr(struct perf_evsel *evsel,
		return 0;
		}

		static void set_print_ip_opts(struct perf_event_attr *attr)
		{
		unsigned int type = attr->type;

		output[type].print_ip_opts = 0;
		if (PRINT_FIELD(IP))
		output[type].print_ip_opts \|= PRINT_IP_OPT_IP;

		if (PRINT_FIELD(SYM))
		output[type].print_ip_opts \|= PRINT_IP_OPT_SYM;

		if (PRINT_FIELD(DSO))
		output[type].print_ip_opts \|= PRINT_IP_OPT_DSO;

		if (PRINT_FIELD(SYMOFFSET))
		output[type].print_ip_opts \|= PRINT_IP_OPT_SYMOFFSET;
		}

		/*
		* verify all user requested events exist and the samples
		* have the expected data
		@@ -237,7 +255,6 @@ static int perf_session__check_output_opt(struct perf_session *session)
		{
		int j;
		struct perf_evsel *evsel;
		struct perf_event_attr *attr;

		for (j = 0; j < PERF_TYPE_MAX; ++j) {
		evsel = perf_session__find_first_evtype(session, j);
		@@ -260,20 +277,7 @@ static int perf_session__check_output_opt(struct perf_session *session)
		if (evsel == NULL)
		continue;

		attr = &evsel->attr;

		output[j].print_ip_opts = 0;
		if (PRINT_FIELD(IP))
		output[j].print_ip_opts \|= PRINT_IP_OPT_IP;

		if (PRINT_FIELD(SYM))
		output[j].print_ip_opts \|= PRINT_IP_OPT_SYM;

		if (PRINT_FIELD(DSO))
		output[j].print_ip_opts \|= PRINT_IP_OPT_DSO;

		if (PRINT_FIELD(SYMOFFSET))
		output[j].print_ip_opts \|= PRINT_IP_OPT_SYMOFFSET;
		set_print_ip_opts(&evsel->attr);
		}

		return 0;
		@@ -547,6 +551,34 @@ struct perf_script {
		struct perf_session *session;
		};

		static int process_attr(struct perf_tool tool, union perf_event event,
		struct perf_evlist **pevlist)
		{
		struct perf_script *scr = container_of(tool, struct perf_script, tool);
		struct perf_evlist *evlist;
		struct perf_evsel evsel, pos;
		int err;

		err = perf_event__process_attr(tool, event, pevlist);
		if (err)
		return err;

		evlist = *pevlist;
		evsel = perf_evlist__last(*pevlist);

		if (evsel->attr.type >= PERF_TYPE_MAX)
		return 0;

		list_for_each_entry(pos, &evlist->entries, node) {
		if (pos->attr.type == evsel->attr.type && pos != evsel)
		return 0;
		}

		set_print_ip_opts(&evsel->attr);

		return perf_evsel__check_attr(evsel, scr->session);
		}

		static void sig_handler(int sig __maybe_unused)
		{
		session_done = 1;
		@@ -1272,7 +1304,7 @@ int cmd_script(int argc, const char *argv, const char prefix __maybe_unused)
		.comm = perf_event__process_comm,
		.exit = perf_event__process_exit,
		.fork = perf_event__process_fork,
		.attr = perf_event__process_attr,
		.attr = process_attr,
		.tracing_data = perf_event__process_tracing_data,
		.build_id = perf_event__process_build_id,
		.ordered_samples = true,

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