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[tip:perf/core] perf target: Consolidate target task/cpu checking

 

 

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namhyung.kim at lge

May 10, 2012, 11:42 PM

Post #1 of 1 (73 views)
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[tip:perf/core] perf target: Consolidate target task/cpu checking

Commit-ID: d67356e7f80f5c2ef487bedc11a91d5fe18c5a15
Gitweb: http://git.kernel.org/tip/d67356e7f80f5c2ef487bedc11a91d5fe18c5a15
Author: Namhyung Kim <namhyung.kim [at] lge>
AuthorDate: Mon, 7 May 2012 14:09:03 +0900
Committer: Arnaldo Carvalho de Melo <acme [at] redhat>
CommitDate: Mon, 7 May 2012 17:52:05 -0300

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.

Signed-off-by: Namhyung Kim <namhyung.kim [at] lge>
Reviewed-by: David Ahern <dsahern [at] gmail>
Cc: David Ahern <dsahern [at] gmail>
Cc: Ingo Molnar <mingo [at] redhat>
Cc: Namhyung Kim <namhyung [at] gmail>
Cc: Paul Mackerras <paulus [at] samba>
Cc: Peter Zijlstra <a.p.zijlstra [at] chello>
Link: http://lkml.kernel.org/r/1336367344-28071-7-git-send-email-namhyung.kim [at] lge
Signed-off-by: Arnaldo Carvalho de Melo <acme [at] redhat>
---
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 c8bf6ea..42e2414 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 bb77232..d9ff246 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 7ba0f03..e4ca827 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 183b199..1201daf 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 bb785a0..21eaab2 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 6fcd01c..127cff3 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 */
--
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