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Commit d1cb9fce authored by Namhyung Kim's avatar Namhyung Kim Committed by Arnaldo Carvalho de Melo
Browse files

perf target: Add uses_mmap field 



If perf doesn't mmap on event (like perf stat), it should not create
per-task-per-cpu events. So just use a dummy cpu map to create a
per-task event for this case.

Signed-off-by: default avatarNamhyung Kim <namhyung.kim@lge.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1337161549-9870-3-git-send-email-namhyung.kim@lge.com


[ committer note: renamed .need_mmap to .uses_mmap ]
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 879d77d0

tools/perf/builtin-record.c

+3 −0
Original line number Diff line number Diff line
@@ -754,6 +754,9 @@ static struct perf_record record = { 
		.user_freq	     = UINT_MAX,

		.user_interval	     = ULLONG_MAX,

		.freq		     = 1000,

		.target		     = {

			.uses_mmap   = true,

		},

	},

	.write_mode = WRITE_FORCE,

	.file_new   = true,

tools/perf/builtin-test.c

+1 −0
Original line number Diff line number Diff line
@@ -1167,6 +1167,7 @@ static int test__PERF_RECORD(void) 
	struct perf_record_opts opts = {

		.target = {

			.uid = UINT_MAX,

			.uses_mmap = true,

		},

		.no_delay   = true,

		.freq	    = 10,

tools/perf/builtin-top.c

+3 −0
Original line number Diff line number Diff line
@@ -1162,6 +1162,9 @@ int cmd_top(int argc, const char **argv, const char *prefix __used) 
		.freq		     = 1000, /* 1 KHz */

		.mmap_pages	     = 128,

		.sym_pcnt_filter     = 5,

		.target		     = {

			.uses_mmap   = true,

		},

	};

	char callchain_default_opt[] = "fractal,0.5,callee";

	const struct option options[] = {

tools/perf/util/evlist.c

+2 −0
Original line number Diff line number Diff line
@@ -611,6 +611,8 @@ int perf_evlist__create_maps(struct perf_evlist *evlist, 


	if (perf_target__has_task(target))

		evlist->cpus = cpu_map__dummy_new();

	else if (!perf_target__has_cpu(target) && !target->uses_mmap)

		evlist->cpus = cpu_map__dummy_new();

	else

		evlist->cpus = cpu_map__new(target->cpu_list);

tools/perf/util/target.h

+1 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ struct perf_target { 
	const char   *uid_str;

	uid_t	     uid;

	bool	     system_wide;

	bool	     uses_mmap;

};



enum perf_target_errno {