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Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/user_ringbuf.c')
-rw-r--r--tools/testing/selftests/bpf/prog_tests/user_ringbuf.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/user_ringbuf.c b/tools/testing/selftests/bpf/prog_tests/user_ringbuf.c
index d424e7ecbd12..9fd3ae987321 100644
--- a/tools/testing/selftests/bpf/prog_tests/user_ringbuf.c
+++ b/tools/testing/selftests/bpf/prog_tests/user_ringbuf.c
@@ -21,8 +21,7 @@
#include "../progs/test_user_ringbuf.h"
static const long c_sample_size = sizeof(struct sample) + BPF_RINGBUF_HDR_SZ;
-static const long c_ringbuf_size = 1 << 12; /* 1 small page */
-static const long c_max_entries = c_ringbuf_size / c_sample_size;
+static long c_ringbuf_size, c_max_entries;
static void drain_current_samples(void)
{
@@ -424,7 +423,9 @@ static void test_user_ringbuf_loop(void)
uint32_t remaining_samples = total_samples;
int err;
- BUILD_BUG_ON(total_samples <= c_max_entries);
+ if (!ASSERT_LT(c_max_entries, total_samples, "compare_c_max_entries"))
+ return;
+
err = load_skel_create_user_ringbuf(&skel, &ringbuf);
if (err)
return;
@@ -686,6 +687,9 @@ void test_user_ringbuf(void)
{
int i;
+ c_ringbuf_size = getpagesize(); /* 1 page */
+ c_max_entries = c_ringbuf_size / c_sample_size;
+
for (i = 0; i < ARRAY_SIZE(success_tests); i++) {
if (!test__start_subtest(success_tests[i].test_name))
continue;