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-rw-r--r--tools/perf/util/rlimit.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/tools/perf/util/rlimit.c b/tools/perf/util/rlimit.c
index 13521d392a22..f857405fe1aa 100644
--- a/tools/perf/util/rlimit.c
+++ b/tools/perf/util/rlimit.c
@@ -1,5 +1,6 @@
/* SPDX-License-Identifier: LGPL-2.1 */
+#include <errno.h>
#include "util/debug.h"
#include "util/rlimit.h"
#include <sys/time.h>
@@ -27,3 +28,30 @@ void rlimit__bump_memlock(void)
}
}
}
+
+bool rlimit__increase_nofile(enum rlimit_action *set_rlimit)
+{
+ int old_errno;
+ struct rlimit l;
+
+ if (*set_rlimit < INCREASED_MAX) {
+ old_errno = errno;
+
+ if (getrlimit(RLIMIT_NOFILE, &l) == 0) {
+ if (*set_rlimit == NO_CHANGE) {
+ l.rlim_cur = l.rlim_max;
+ } else {
+ l.rlim_cur = l.rlim_max + 1000;
+ l.rlim_max = l.rlim_cur;
+ }
+ if (setrlimit(RLIMIT_NOFILE, &l) == 0) {
+ (*set_rlimit) += 1;
+ errno = old_errno;
+ return true;
+ }
+ }
+ errno = old_errno;
+ }
+
+ return false;
+}