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[bpf-next,31/35] bpf: runqslower: don't touch RLIMIT_MEMLOCK

Message ID 20200725000410.3566700-32-guro@fb.com
State Changes Requested
Delegated to: BPF Maintainers
Headers show
Series bpf: switch to memcg-based memory accounting | expand

Commit Message

Roman Gushchin July 25, 2020, 12:04 a.m. UTC 
Since bpf is not using memlock rlimit for memory accounting,
there are no more reasons to bump the limit.

Signed-off-by: Roman Gushchin <guro@fb.com>
---
 tools/bpf/runqslower/runqslower.c | 16 ----------------
 1 file changed, 16 deletions(-)
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Patch

diff --git a/tools/bpf/runqslower/runqslower.c b/tools/bpf/runqslower/runqslower.c
index d89715844952..a3380b53ce0c 100644
--- a/tools/bpf/runqslower/runqslower.c
+++ b/tools/bpf/runqslower/runqslower.c
@@ -88,16 +88,6 @@  int libbpf_print_fn(enum libbpf_print_level level,
 	return vfprintf(stderr, format, args);
 }
 
-static int bump_memlock_rlimit(void)
-{
-	struct rlimit rlim_new = {
-		.rlim_cur	= RLIM_INFINITY,
-		.rlim_max	= RLIM_INFINITY,
-	};
-
-	return setrlimit(RLIMIT_MEMLOCK, &rlim_new);
-}
-
 void handle_event(void *ctx, int cpu, void *data, __u32 data_sz)
 {
 	const struct event *e = data;
@@ -134,12 +124,6 @@  int main(int argc, char **argv)
 
 	libbpf_set_print(libbpf_print_fn);
 
-	err = bump_memlock_rlimit();
-	if (err) {
-		fprintf(stderr, "failed to increase rlimit: %d", err);
-		return 1;
-	}
-
 	obj = runqslower_bpf__open();
 	if (!obj) {
 		fprintf(stderr, "failed to open and/or load BPF object\n");