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-rw-r--r--tools/perf/util/record.c11
-rw-r--r--tools/perf/util/util.c9
2 files changed, 2 insertions, 18 deletions
diff --git a/tools/perf/util/record.c b/tools/perf/util/record.c
index cf69325b985f..8acd0df88b5c 100644
--- a/tools/perf/util/record.c
+++ b/tools/perf/util/record.c
@@ -137,16 +137,7 @@ void perf_evlist__config(struct perf_evlist *evlist, struct record_opts *opts)
137 137
138static int get_max_rate(unsigned int *rate) 138static int get_max_rate(unsigned int *rate)
139{ 139{
140 char path[PATH_MAX]; 140 return sysctl__read_int("kernel/perf_event_max_sample_rate", (int *)rate);
141 const char *procfs = procfs__mountpoint();
142
143 if (!procfs)
144 return -1;
145
146 snprintf(path, PATH_MAX,
147 "%s/sys/kernel/perf_event_max_sample_rate", procfs);
148
149 return filename__read_int(path, (int *) rate);
150} 141}
151 142
152static int record_opts__config_freq(struct record_opts *opts) 143static int record_opts__config_freq(struct record_opts *opts)
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index 41125e5b011e..b86744f29eef 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -506,16 +506,9 @@ const char *get_filename_for_perf_kvm(void)
506 506
507int perf_event_paranoid(void) 507int perf_event_paranoid(void)
508{ 508{
509 char path[PATH_MAX];
510 const char *procfs = procfs__mountpoint();
511 int value; 509 int value;
512 510
513 if (!procfs) 511 if (sysctl__read_int("kernel/perf_event_paranoid", &value))
514 return INT_MAX;
515
516 scnprintf(path, PATH_MAX, "%s/sys/kernel/perf_event_paranoid", procfs);
517
518 if (filename__read_int(path, &value))
519 return INT_MAX; 512 return INT_MAX;
520 513
521 return value; 514 return value;