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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-10-03 17:07:24 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-10-03 17:24:13 +0300 |
| commit | 18ef15c675a5d5d97f844ebcf340a2a6c7cf3142 (patch) | |
| tree | 08616a05632dbbea3281e040069f5cbdca9878d8 /tools/perf/util/evlist.c | |
| parent | ead1a57457c0324a167f3f9e3a70e26c2d75fb12 (diff) | |
| download | linux-18ef15c675a5d5d97f844ebcf340a2a6c7cf3142.tar.xz | |
perf tools: Experiment with cppcheck
Experimenting a bit using cppcheck[1], a static checker brought to my
attention by Colin, reducing the scope of some variables, reducing the
line of source code lines in the process:
$ cppcheck --enable=style tools/perf/util/thread.c
Checking tools/perf/util/thread.c...
[tools/perf/util/thread.c:17]: (style) The scope of the variable 'leader' can be reduced.
[tools/perf/util/thread.c:133]: (style) The scope of the variable 'err' can be reduced.
[tools/perf/util/thread.c:273]: (style) The scope of the variable 'err' can be reduced.
Will continue later, but these are already useful, keep them.
1: https://sourceforge.net/p/cppcheck/wiki/Home/
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Colin Ian King <colin.king@canonical.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-ixws7lbycihhpmq9cc949ti6@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/evlist.c')
| -rw-r--r-- | tools/perf/util/evlist.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index ea34c5a32c11..d92e02006fb8 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -384,15 +384,14 @@ void perf_evlist__toggle_enable(struct perf_evlist *evlist) static int perf_evlist__enable_event_cpu(struct perf_evlist *evlist, struct perf_evsel *evsel, int cpu) { - int thread, err; + int thread; int nr_threads = perf_evlist__nr_threads(evlist, evsel); if (!evsel->fd) return -EINVAL; for (thread = 0; thread < nr_threads; thread++) { - err = ioctl(FD(evsel, cpu, thread), - PERF_EVENT_IOC_ENABLE, 0); + int err = ioctl(FD(evsel, cpu, thread), PERF_EVENT_IOC_ENABLE, 0); if (err) return err; } @@ -403,14 +402,14 @@ static int perf_evlist__enable_event_thread(struct perf_evlist *evlist, struct perf_evsel *evsel, int thread) { - int cpu, err; + int cpu; int nr_cpus = cpu_map__nr(evlist->cpus); if (!evsel->fd) return -EINVAL; for (cpu = 0; cpu < nr_cpus; cpu++) { - err = ioctl(FD(evsel, cpu, thread), PERF_EVENT_IOC_ENABLE, 0); + int err = ioctl(FD(evsel, cpu, thread), PERF_EVENT_IOC_ENABLE, 0); if (err) return err; } @@ -1606,10 +1605,9 @@ void perf_evlist__close(struct perf_evlist *evlist) struct perf_evsel *evsel; int ncpus = cpu_map__nr(evlist->cpus); int nthreads = thread_map__nr(evlist->threads); - int n; evlist__for_each_entry_reverse(evlist, evsel) { - n = evsel->cpus ? evsel->cpus->nr : ncpus; + int n = evsel->cpus ? evsel->cpus->nr : ncpus; perf_evsel__close(evsel, n, nthreads); } } |