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kcov: remove pointless current != NULL check

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__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>
This commit is contained in:
Andrey Ryabinin
2017-11-17 15:30:42 -08:00
committed by Linus Torvalds
parent 4efb442cc1
commit fcf4edac04
1 changed files with 1 additions and 1 deletions
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kernel/kcov.c
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@@ -62,7 +62,7 @@ void notrace __sanitizer_cov_trace_pc(void)
* We are interested in code coverage as a function of a syscall inputs, * We are interested in code coverage as a function of a syscall inputs,
* so we ignore code executed in interrupts. * so we ignore code executed in interrupts.
*/ */
if (!t || !in_task()) if (!in_task())
return; return;
mode = READ_ONCE(t->kcov_mode); mode = READ_ONCE(t->kcov_mode);
if (mode == KCOV_MODE_TRACE) { if (mode == KCOV_MODE_TRACE) {