From: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx> Subject: 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@xxxxxxxxxxxxx Signed-off-by: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx> Acked-by: Dmitry Vyukov <dvyukov@xxxxxxxxxx> Acked-by: Mark Rutland <mark.rutland@xxxxxxx> Cc: Andrey Konovalov <andreyknvl@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- kernel/kcov.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -puN kernel/kcov.c~kcov-remove-pointless-current-=-null-check kernel/kcov.c --- a/kernel/kcov.c~kcov-remove-pointless-current-=-null-check +++ a/kernel/kcov.c @@ -62,7 +62,7 @@ void notrace __sanitizer_cov_trace_pc(vo * 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) { _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
