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-rw-r--r--tools/testing/selftests/bpf/bpf_rlimit.h28
1 files changed, 28 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/bpf_rlimit.h b/tools/testing/selftests/bpf/bpf_rlimit.h
new file mode 100644
index 000000000..9dac9b30f
--- /dev/null
+++ b/tools/testing/selftests/bpf/bpf_rlimit.h
@@ -0,0 +1,28 @@
+#include <sys/resource.h>
+#include <stdio.h>
+
+static __attribute__((constructor)) void bpf_rlimit_ctor(void)
+{
+ struct rlimit rlim_old, rlim_new = {
+ .rlim_cur = RLIM_INFINITY,
+ .rlim_max = RLIM_INFINITY,
+ };
+
+ getrlimit(RLIMIT_MEMLOCK, &rlim_old);
+ /* For the sake of running the test cases, we temporarily
+ * set rlimit to infinity in order for kernel to focus on
+ * errors from actual test cases and not getting noise
+ * from hitting memlock limits. The limit is on per-process
+ * basis and not a global one, hence destructor not really
+ * needed here.
+ */
+ if (setrlimit(RLIMIT_MEMLOCK, &rlim_new) < 0) {
+ perror("Unable to lift memlock rlimit");
+ /* Trying out lower limit, but expect potential test
+ * case failures from this!
+ */
+ rlim_new.rlim_cur = rlim_old.rlim_cur + (1UL << 20);
+ rlim_new.rlim_max = rlim_old.rlim_max + (1UL << 20);
+ setrlimit(RLIMIT_MEMLOCK, &rlim_new);
+ }
+}