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Diffstat (limited to 'kernel/trace/trace_kprobe.c')
-rw-r--r--kernel/trace/trace_kprobe.c55
1 files changed, 47 insertions, 8 deletions
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index 7ac728ded964..d6266cad6953 100644
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c
@@ -1507,28 +1507,67 @@ static int kprobe_trace_selftest_target(int a1, int a2, int a3,
static __init int kprobe_trace_self_tests_init(void)
{
- int ret;
+ int ret, warn = 0;
int (*target)(int, int, int, int, int, int);
+ struct trace_probe *tp;
target = kprobe_trace_selftest_target;
pr_info("Testing kprobe tracing: ");
ret = command_trace_probe("p:testprobe kprobe_trace_selftest_target "
- "$arg1 $arg2 $arg3 $arg4 $stack $stack0");
- if (WARN_ON_ONCE(ret))
- pr_warning("error enabling function entry\n");
+ "$stack $stack0 +0($stack)");
+ if (WARN_ON_ONCE(ret)) {
+ pr_warning("error on probing function entry.\n");
+ warn++;
+ } else {
+ /* Enable trace point */
+ tp = find_probe_event("testprobe", KPROBE_EVENT_SYSTEM);
+ if (WARN_ON_ONCE(tp == NULL)) {
+ pr_warning("error on getting new probe.\n");
+ warn++;
+ } else
+ probe_event_enable(&tp->call);
+ }
ret = command_trace_probe("r:testprobe2 kprobe_trace_selftest_target "
"$retval");
- if (WARN_ON_ONCE(ret))
- pr_warning("error enabling function return\n");
+ if (WARN_ON_ONCE(ret)) {
+ pr_warning("error on probing function return.\n");
+ warn++;
+ } else {
+ /* Enable trace point */
+ tp = find_probe_event("testprobe2", KPROBE_EVENT_SYSTEM);
+ if (WARN_ON_ONCE(tp == NULL)) {
+ pr_warning("error on getting new probe.\n");
+ warn++;
+ } else
+ probe_event_enable(&tp->call);
+ }
+
+ if (warn)
+ goto end;
ret = target(1, 2, 3, 4, 5, 6);
- cleanup_all_probes();
+ ret = command_trace_probe("-:testprobe");
+ if (WARN_ON_ONCE(ret)) {
+ pr_warning("error on deleting a probe.\n");
+ warn++;
+ }
+
+ ret = command_trace_probe("-:testprobe2");
+ if (WARN_ON_ONCE(ret)) {
+ pr_warning("error on deleting a probe.\n");
+ warn++;
+ }
- pr_cont("OK\n");
+end:
+ cleanup_all_probes();
+ if (warn)
+ pr_cont("NG: Some tests are failed. Please check them.\n");
+ else
+ pr_cont("OK\n");
return 0;
}