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Date:	Mon,  7 May 2012 14:09:03 +0900
From:	Namhyung Kim <namhyung.kim@....com>
To:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Namhyung Kim <namhyung@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>
Subject: [PATCH 6/7] perf target: Consolidate target task/cpu checking

There are places that check whether target task/cpu is given or not
and some of them didn't check newly introduced uid or cpu list. Add
and use three of helper functions to treat them properly.

Reviewed-by: David Ahern <dsahern@...il.com>
Signed-off-by: Namhyung Kim <namhyung.kim@....com>
---
 tools/perf/builtin-record.c |    4 +---
 tools/perf/builtin-stat.c   |   12 ++++++------
 tools/perf/builtin-top.c    |    2 +-
 tools/perf/util/evlist.c    |   10 ++++------
 tools/perf/util/evsel.c     |    8 ++++----
 tools/perf/util/target.h    |   15 +++++++++++++++
 6 files changed, 31 insertions(+), 20 deletions(-)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 211d28f01eff..fa1774413224 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -843,9 +843,7 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
 
 	argc = parse_options(argc, argv, record_options, record_usage,
 			    PARSE_OPT_STOP_AT_NON_OPTION);
-	if (!argc && !rec->opts.target.pid && !rec->opts.target.tid &&
-	    !rec->opts.target.system_wide && !rec->opts.target.cpu_list &&
-	    !rec->opts.target.uid_str)
+	if (!argc && perf_target__none(&rec->opts.target))
 		usage_with_options(record_usage, record_options);
 
 	if (rec->force && rec->append_file) {
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index bb7723221c0d..d9ff24637eeb 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -290,10 +290,10 @@ static int create_perf_stat_counter(struct perf_evsel *evsel,
 
 	attr->inherit = !no_inherit;
 
-	if (target.system_wide)
+	if (!perf_target__no_cpu(&target))
 		return perf_evsel__open_per_cpu(evsel, evsel_list->cpus,
 						group, group_fd);
-	if (!target.pid && !target.tid && (!group || evsel == first)) {
+	if (perf_target__no_task(&target) && (!group || evsel == first)) {
 		attr->disabled = 1;
 		attr->enable_on_exec = 1;
 	}
@@ -443,7 +443,7 @@ static int run_perf_stat(int argc __used, const char **argv)
 			exit(-1);
 		}
 
-		if (!target.tid && !target.pid && !target.system_wide)
+		if (perf_target__none(&target))
 			evsel_list->threads->map[0] = child_pid;
 
 		/*
@@ -965,7 +965,7 @@ static void print_stat(int argc, const char **argv)
 	if (!csv_output) {
 		fprintf(output, "\n");
 		fprintf(output, " Performance counter stats for ");
-		if (!target.pid && !target.tid) {
+		if (perf_target__no_task(&target)) {
 			fprintf(output, "\'%s", argv[0]);
 			for (i = 1; i < argc; i++)
 				fprintf(output, " %s", argv[i]);
@@ -1187,13 +1187,13 @@ int cmd_stat(int argc, const char **argv, const char *prefix __used)
 	} else if (big_num_opt == 0) /* User passed --no-big-num */
 		big_num = false;
 
-	if (!argc && !target.pid && !target.tid)
+	if (!argc && perf_target__no_task(&target))
 		usage_with_options(stat_usage, options);
 	if (run_count <= 0)
 		usage_with_options(stat_usage, options);
 
 	/* no_aggr, cgroup are for system-wide only */
-	if ((no_aggr || nr_cgroups) && !target.system_wide) {
+	if ((no_aggr || nr_cgroups) && perf_target__no_cpu(&target)) {
 		fprintf(stderr, "both cgroup and no-aggregation "
 			"modes only available in system-wide mode\n");
 
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index a2518fc0626a..52e75e76686c 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1016,7 +1016,7 @@ static int __cmd_top(struct perf_top *top)
 	if (ret)
 		goto out_delete;
 
-	if (top->target.tid || top->target.uid != UINT_MAX)
+	if (!perf_target__no_task(&top->target))
 		perf_event__synthesize_thread_map(&top->tool, top->evlist->threads,
 						  perf_event__process,
 						  &top->session->host_machine);
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 183b199b0d09..1201daf71719 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -609,12 +609,10 @@ int perf_evlist__create_maps(struct perf_evlist *evlist,
 	if (evlist->threads == NULL)
 		return -1;
 
-	if (target->uid != UINT_MAX || target->tid)
-		evlist->cpus = cpu_map__dummy_new();
-	else if (!target->system_wide && target->cpu_list == NULL)
-		evlist->cpus = cpu_map__dummy_new();
-	else
+	if (!perf_target__no_cpu(target))
 		evlist->cpus = cpu_map__new(target->cpu_list);
+	else
+		evlist->cpus = cpu_map__dummy_new();
 
 	if (evlist->cpus == NULL)
 		goto out_delete_threads;
@@ -831,7 +829,7 @@ int perf_evlist__prepare_workload(struct perf_evlist *evlist,
 		exit(-1);
 	}
 
-	if (!opts->target.system_wide && !opts->target.tid && !opts->target.pid)
+	if (perf_target__none(&opts->target))
 		evlist->threads->map[0] = evlist->workload.pid;
 
 	close(child_ready_pipe[1]);
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index bb785a098ced..21eaab240396 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -114,8 +114,8 @@ void perf_evsel__config(struct perf_evsel *evsel, struct perf_record_opts *opts,
 		attr->sample_type	|= PERF_SAMPLE_PERIOD;
 
 	if (!opts->sample_id_all_missing &&
-	    (opts->sample_time || opts->target.system_wide ||
-	     !opts->no_inherit || opts->target.cpu_list))
+	    (opts->sample_time || !opts->no_inherit ||
+	     !perf_target__no_cpu(&opts->target)))
 		attr->sample_type	|= PERF_SAMPLE_TIME;
 
 	if (opts->raw_samples) {
@@ -136,8 +136,8 @@ void perf_evsel__config(struct perf_evsel *evsel, struct perf_record_opts *opts,
 	attr->mmap = track;
 	attr->comm = track;
 
-	if (!opts->target.pid && !opts->target.tid &&
-	    !opts->target.system_wide && (!opts->group || evsel == first)) {
+	if (perf_target__none(&opts->target) &&
+	    (!opts->group || evsel == first)) {
 		attr->disabled = 1;
 		attr->enable_on_exec = 1;
 	}
diff --git a/tools/perf/util/target.h b/tools/perf/util/target.h
index 6fcd01c440a9..127cff3f8ced 100644
--- a/tools/perf/util/target.h
+++ b/tools/perf/util/target.h
@@ -46,4 +46,19 @@ enum perf_target_errno perf_target__parse_uid(struct perf_target *target);
 int perf_target__strerror(struct perf_target *target, int errnum, char *buf,
 			  size_t buflen);
 
+static inline bool perf_target__no_task(struct perf_target *target)
+{
+	return !target->pid && !target->tid && !target->uid_str;
+}
+
+static inline bool perf_target__no_cpu(struct perf_target *target)
+{
+	return !target->system_wide && !target->cpu_list;
+}
+
+static inline bool perf_target__none(struct perf_target *target)
+{
+	return perf_target__no_task(target) && perf_target__no_cpu(target);
+}
+
 #endif /* _PERF_TARGET_H */
-- 
1.7.10.1

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