diff options
| author | Yang Jihong <yangjihong1@huawei.com> | 2023-10-23 03:31:44 +0000 |
|---|---|---|
| committer | Namhyung Kim <namhyung@kernel.org> | 2023-10-25 10:02:11 -0700 |
| commit | e093a222d7cba1eb6c36887e58ce8a4ff249f1c6 (patch) | |
| tree | e5f841d46f7c6384e393085e204e02a0ba16f5c9 /tools/perf/util/rlimit.c | |
| parent | 79a3371bdf453bedb9d2c80df5adc201dddc11b5 (diff) | |
perf evsel: Rename evsel__increase_rlimit to rlimit__increase_nofile
evsel__increase_rlimit() helper does nothing with evsel, and description
of the functionality is inaccurate, rename it and move to util/rlimit.c.
By the way, fix a checkppatch warning about misplaced license tag:
WARNING: Misplaced SPDX-License-Identifier tag - use line 1 instead
#160: FILE: tools/perf/util/rlimit.h:3:
/* SPDX-License-Identifier: LGPL-2.1 */
No functional change.
Signed-off-by: Yang Jihong <yangjihong1@huawei.com>
Link: https://lore.kernel.org/r/20231023033144.1011896-1-yangjihong1@huawei.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
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; +} |