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authorPavankumar Kondeti <quic_pkondeti@quicinc.com>2023-04-13 13:08:59 +0300
committerAndrew Morton <akpm@linux-foundation.org>2023-04-19 02:30:11 +0300
commit1f6ab566cb3be9e8292e34b89e8be83d75aa232e (patch)
treef0f348378c1092072792aca8366697d4fc6608fd /mm/kasan
parentc7b23b68e2aa93f86a206222d23ccd9a21f5982a (diff)
downloadlinux-1f6ab566cb3be9e8292e34b89e8be83d75aa232e.tar.xz
printk: export console trace point for kcsan/kasan/kfence/kmsan
The console tracepoint is used by kcsan/kasan/kfence/kmsan test modules. Since this tracepoint is not exported, these modules iterate over all available tracepoints to find the console trace point. Export the trace point so that it can be directly used. Link: https://lkml.kernel.org/r/20230413100859.1492323-1-quic_pkondeti@quicinc.com Signed-off-by: Pavankumar Kondeti <quic_pkondeti@quicinc.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: John Ogness <john.ogness@linutronix.de> Cc: Marco Elver <elver@google.com> Cc: Petr Mladek <pmladek@suse.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/kasan')
-rw-r--r--mm/kasan/kasan_test.c22
1 files changed, 2 insertions, 20 deletions
diff --git a/mm/kasan/kasan_test.c b/mm/kasan/kasan_test.c
index a375776f9896..b61cc6a42541 100644
--- a/mm/kasan/kasan_test.c
+++ b/mm/kasan/kasan_test.c
@@ -56,19 +56,6 @@ static void probe_console(void *ignore, const char *buf, size_t len)
WRITE_ONCE(test_status.async_fault, true);
}
-static void register_tracepoints(struct tracepoint *tp, void *ignore)
-{
- check_trace_callback_type_console(probe_console);
- if (!strcmp(tp->name, "console"))
- WARN_ON(tracepoint_probe_register(tp, probe_console, NULL));
-}
-
-static void unregister_tracepoints(struct tracepoint *tp, void *ignore)
-{
- if (!strcmp(tp->name, "console"))
- tracepoint_probe_unregister(tp, probe_console, NULL);
-}
-
static int kasan_suite_init(struct kunit_suite *suite)
{
if (!kasan_enabled()) {
@@ -86,12 +73,7 @@ static int kasan_suite_init(struct kunit_suite *suite)
*/
multishot = kasan_save_enable_multi_shot();
- /*
- * Because we want to be able to build the test as a module, we need to
- * iterate through all known tracepoints, since the static registration
- * won't work here.
- */
- for_each_kernel_tracepoint(register_tracepoints, NULL);
+ register_trace_console(probe_console, NULL);
return 0;
}
@@ -99,7 +81,7 @@ static void kasan_suite_exit(struct kunit_suite *suite)
{
kasan_kunit_test_suite_end();
kasan_restore_multi_shot(multishot);
- for_each_kernel_tracepoint(unregister_tracepoints, NULL);
+ unregister_trace_console(probe_console, NULL);
tracepoint_synchronize_unregister();
}