Commit 96c14451 authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo
Browse files

perf trace: Sort summary output by number of events 



  # trace -a -s sleep 1 |& grep events | tail
   gmain (1733), 34 events, 1.0%, 0.000 msec
   hexchat (9765), 46 events, 1.4%, 0.000 msec
   ssh (11109), 80 events, 2.4%, 0.000 msec
   sleep (32631), 81 events, 2.4%, 0.000 msec
   qemu-system-x86 (10021), 272 events, 8.2%, 0.000 msec
   Xorg (1965), 322 events, 9.7%, 0.000 msec
   SoftwareVsyncTh (10922), 366 events, 11.1%, 0.000 msec
   gnome-shell (2231), 446 events, 13.5%, 0.000 msec
   qemu-system-x86 (9931), 468 events, 14.1%, 0.000 msec
   firefox (10871), 1098 events, 33.2%, 0.000 msec
  [root@jouet ~]#

Suggested-by: default avatarMilian Wolff <milian.wolff@kdab.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-ye4cnprhfeiq32ar4lt60dqs@git.kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent f58c2535

tools/perf/builtin-trace.c

+28 −21
Original line number Diff line number Diff line
@@ -36,6 +36,7 @@ 
#include "util/bpf-loader.h"

#include "callchain.h"

#include "syscalltbl.h"

#include "rb_resort.h"



#include <libaudit.h> /* FIXME: Still needed for audit_errno_to_name */

#include <stdlib.h>
@@ -2829,19 +2830,9 @@ static size_t thread__dump_stats(struct thread_trace *ttrace, 
	return printed;

}



/* struct used to pass data to per-thread function */

struct summary_data {

	FILE *fp;

	struct trace *trace;

	size_t printed;

};



static int trace__fprintf_one_thread(struct thread *thread, void *priv)

static size_t trace__fprintf_thread(FILE *fp, struct thread *thread, struct trace *trace)

{

	struct summary_data *data = priv;

	FILE *fp = data->fp;

	size_t printed = data->printed;

	struct trace *trace = data->trace;

	size_t printed = 0;

	struct thread_trace *ttrace = thread__priv(thread);

	double ratio;
@@ -2860,22 +2851,38 @@ static int trace__fprintf_one_thread(struct thread *thread, void *priv) 
	printed += fprintf(fp, ", %.3f msec\n", ttrace->runtime_ms);

	printed += thread__dump_stats(ttrace, trace, fp);



	data->printed += printed;

	return printed;

}



	return 0;

static unsigned long thread__nr_events(struct thread_trace *ttrace)

{

	return ttrace ? ttrace->nr_events : 0;

}



DEFINE_RESORT_RB(threads, (thread__nr_events(a->thread->priv) < thread__nr_events(b->thread->priv)),

	struct thread *thread;

)

{

	entry->thread = rb_entry(nd, struct thread, rb_node);

}



static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp)

{

	struct summary_data data = {

		.fp = fp,

		.trace = trace

	};

	data.printed = trace__fprintf_threads_header(fp);

	DECLARE_RESORT_RB_MACHINE_THREADS(threads, trace->host);

	size_t printed = trace__fprintf_threads_header(fp);

	struct rb_node *nd;



	machine__for_each_thread(trace->host, trace__fprintf_one_thread, &data);

	if (threads == NULL) {

		fprintf(fp, "%s", "Error sorting output by nr_events!\n");

		return 0;

	}



	resort_rb__for_each(nd, threads)

		printed += trace__fprintf_thread(fp, threads_entry->thread, trace);



	return data.printed;

	resort_rb__delete(threads);



	return printed;

}



static int trace__set_duration(const struct option *opt, const char *str,

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