diff options
Diffstat (limited to 'tools/perf/util/rlimit.c')
| -rw-r--r-- | tools/perf/util/rlimit.c | 28 |
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; +} |