[PATCH 2/3] tracing/kprobe: Remove unneeded WARN_ON_ONCE() in selftests

[Masami Hiramatsu (Google)]

From: Masami Hiramatsu (Google) <mhira...@kernel.org>

Since the kprobe-events selftest shows OK or NG with the reason, the
WARN_ON_ONCE()s for each place are redundant. Let's remove it.

Signed-off-by: Masami Hiramatsu (Google) <mhira...@kernel.org>
---
 kernel/trace/trace_kprobe.c |   26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index 16383247bdbf..4abed36544d0 100644
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c
@@ -2023,18 +2023,18 @@ static __init int kprobe_trace_self_tests_init(void)
        pr_info("Testing kprobe tracing: ");
 
        ret = create_or_delete_trace_kprobe("p:testprobe 
kprobe_trace_selftest_target $stack $stack0 +0($stack)");
-       if (WARN_ON_ONCE(ret)) {
+       if (ret) {
                pr_warn("error on probing function entry.\n");
                warn++;
        } else {
                /* Enable trace point */
                tk = find_trace_kprobe("testprobe", KPROBE_EVENT_SYSTEM);
-               if (WARN_ON_ONCE(tk == NULL)) {
+               if (tk == NULL) {
                        pr_warn("error on getting new probe.\n");
                        warn++;
                } else {
                        file = find_trace_probe_file(tk, top_trace_array());
-                       if (WARN_ON_ONCE(file == NULL)) {
+                       if (file == NULL) {
                                pr_warn("error on getting probe file.\n");
                                warn++;
                        } else
@@ -2044,18 +2044,18 @@ static __init int kprobe_trace_self_tests_init(void)
        }
 
        ret = create_or_delete_trace_kprobe("r:testprobe2 
kprobe_trace_selftest_target $retval");
-       if (WARN_ON_ONCE(ret)) {
+       if (ret) {
                pr_warn("error on probing function return.\n");
                warn++;
        } else {
                /* Enable trace point */
                tk = find_trace_kprobe("testprobe2", KPROBE_EVENT_SYSTEM);
-               if (WARN_ON_ONCE(tk == NULL)) {
+               if (tk == NULL) {
                        pr_warn("error on getting 2nd new probe.\n");
                        warn++;
                } else {
                        file = find_trace_probe_file(tk, top_trace_array());
-                       if (WARN_ON_ONCE(file == NULL)) {
+                       if (file == NULL) {
                                pr_warn("error on getting probe file.\n");
                                warn++;
                        } else
@@ -2079,7 +2079,7 @@ static __init int kprobe_trace_self_tests_init(void)
 
        /* Disable trace points before removing it */
        tk = find_trace_kprobe("testprobe", KPROBE_EVENT_SYSTEM);
-       if (WARN_ON_ONCE(tk == NULL)) {
+       if (tk == NULL) {
                pr_warn("error on getting test probe.\n");
                warn++;
        } else {
@@ -2089,7 +2089,7 @@ static __init int kprobe_trace_self_tests_init(void)
                }
 
                file = find_trace_probe_file(tk, top_trace_array());
-               if (WARN_ON_ONCE(file == NULL)) {
+               if (file == NULL) {
                        pr_warn("error on getting probe file.\n");
                        warn++;
                } else
@@ -2098,7 +2098,7 @@ static __init int kprobe_trace_self_tests_init(void)
        }
 
        tk = find_trace_kprobe("testprobe2", KPROBE_EVENT_SYSTEM);
-       if (WARN_ON_ONCE(tk == NULL)) {
+       if (tk == NULL) {
                pr_warn("error on getting 2nd test probe.\n");
                warn++;
        } else {
@@ -2108,7 +2108,7 @@ static __init int kprobe_trace_self_tests_init(void)
                }
 
                file = find_trace_probe_file(tk, top_trace_array());
-               if (WARN_ON_ONCE(file == NULL)) {
+               if (file == NULL) {
                        pr_warn("error on getting probe file.\n");
                        warn++;
                } else
@@ -2117,20 +2117,20 @@ static __init int kprobe_trace_self_tests_init(void)
        }
 
        ret = create_or_delete_trace_kprobe("-:testprobe");
-       if (WARN_ON_ONCE(ret)) {
+       if (ret) {
                pr_warn("error on deleting a probe.\n");
                warn++;
        }
 
        ret = create_or_delete_trace_kprobe("-:testprobe2");
-       if (WARN_ON_ONCE(ret)) {
+       if (ret) {
                pr_warn("error on deleting a probe.\n");
                warn++;
        }
 
 end:
        ret = dyn_events_release_all(&trace_kprobe_ops);
-       if (WARN_ON_ONCE(ret)) {
+       if (ret) {
                pr_warn("error on cleaning up probes.\n");
                warn++;
        }