perf tools: Use sysctl__read_int instead of ad-hoc copies (ce27309f) · Commits · 戴 / test

Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-pt2u7a3b50oddggecx7rwq2n@git.kernel.org Signed-off-by:

Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/record.c

+1 −10

Original line number	Diff line number	Diff line
		@@ -137,16 +137,7 @@ void perf_evlist__config(struct perf_evlist evlist, struct record_opts opts)

		static int get_max_rate(unsigned int *rate)
		{
		char path[PATH_MAX];
		const char *procfs = procfs__mountpoint();

		if (!procfs)
		return -1;

		snprintf(path, PATH_MAX,
		"%s/sys/kernel/perf_event_max_sample_rate", procfs);

		return filename__read_int(path, (int *) rate);
		return sysctl__read_int("kernel/perf_event_max_sample_rate", (int *)rate);
		}

		static int record_opts__config_freq(struct record_opts *opts)

tools/perf/util/util.c

+1 −8

Original line number	Diff line number	Diff line
		@@ -506,16 +506,9 @@ const char *get_filename_for_perf_kvm(void)

		int perf_event_paranoid(void)
		{
		char path[PATH_MAX];
		const char *procfs = procfs__mountpoint();
		int value;

		if (!procfs)
		return INT_MAX;

		scnprintf(path, PATH_MAX, "%s/sys/kernel/perf_event_paranoid", procfs);

		if (filename__read_int(path, &value))
		if (sysctl__read_int("kernel/perf_event_paranoid", &value))
		return INT_MAX;

		return value;

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