From fcf4edac049a8bca41658970292e2dfdbc9d5f62 Mon Sep 17 00:00:00 2001
From: Andrey Ryabinin <aryabinin@virtuozzo.com>
Date: Fri, 17 Nov 2017 15:30:42 -0800
Subject: [PATCH] kcov: remove pointless current != NULL check
__sanitizer_cov_trace_pc() is a hot code, so it's worth to remove
pointless '!current' check. Current is never NULL.
Link: http://lkml.kernel.org/r/20170929162221.32500-1-aryabinin@virtuozzo.com
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
kernel/kcov.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/kcov.c b/kernel/kcov.c
index fc6af9e1308b7..d9f9fa9cacc62 100644
--- a/kernel/kcov.c
+++ b/kernel/kcov.c
@@ -62,7 +62,7 @@ void notrace __sanitizer_cov_trace_pc(void)
* We are interested in code coverage as a function of a syscall inputs,
* so we ignore code executed in interrupts.
*/
- if (!t || !in_task())
+ if (!in_task())
return;
mode = READ_ONCE(t->kcov_mode);
if (mode == KCOV_MODE_TRACE) {
--
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