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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/perf/util/rlimit.c | |
parent | Initial commit. (diff) | |
download | linux-430c2fc249ea5c0536abd21c23382884005c9093.tar.xz linux-430c2fc249ea5c0536abd21c23382884005c9093.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/perf/util/rlimit.c')
-rw-r--r-- | tools/perf/util/rlimit.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/tools/perf/util/rlimit.c b/tools/perf/util/rlimit.c new file mode 100644 index 000000000..13521d392 --- /dev/null +++ b/tools/perf/util/rlimit.c @@ -0,0 +1,29 @@ +/* SPDX-License-Identifier: LGPL-2.1 */ + +#include "util/debug.h" +#include "util/rlimit.h" +#include <sys/time.h> +#include <sys/resource.h> + +/* + * Bump the memlock so that we can get bpf maps of a reasonable size, + * like the ones used with 'perf trace' and with 'perf test bpf', + * improve this to some specific request if needed. + */ +void rlimit__bump_memlock(void) +{ + struct rlimit rlim; + + if (getrlimit(RLIMIT_MEMLOCK, &rlim) == 0) { + rlim.rlim_cur *= 4; + rlim.rlim_max *= 4; + + if (setrlimit(RLIMIT_MEMLOCK, &rlim) < 0) { + rlim.rlim_cur /= 2; + rlim.rlim_max /= 2; + + if (setrlimit(RLIMIT_MEMLOCK, &rlim) < 0) + pr_debug("Couldn't bump rlimit(MEMLOCK), failures may take place when creating BPF maps, etc\n"); + } + } +} |