From: Peter Zijlstra peterz@infradead.org
[ Upstream commit 7e6f4c5d600c1c8e2a1d900e65cab319d9b6782e ]
LLVM has a warning that tags expressions like:
if (foo && non-bool-const)
This pattern triggers for CONFIG_SCHED_DEBUG=n where sched_feat() ends up being whatever bit we select. Avoid the warning with an explicit cast to bool.
Reported-by: Philipp Klocke philipp97kl@gmail.com Tested-by: Nick Desaulniers ndesaulniers@google.com Signed-off-by: Peter Zijlstra (Intel) peterz@infradead.org Cc: Linus Torvalds torvalds@linux-foundation.org Cc: Peter Zijlstra peterz@infradead.org Cc: Thomas Gleixner tglx@linutronix.de Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar mingo@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- kernel/sched/sched.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 62058fd6dcf63..94bec97bd5e28 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -1389,7 +1389,7 @@ static const_debug __maybe_unused unsigned int sysctl_sched_features = 0; #undef SCHED_FEAT
-#define sched_feat(x) (sysctl_sched_features & (1UL << __SCHED_FEAT_##x)) +#define sched_feat(x) !!(sysctl_sched_features & (1UL << __SCHED_FEAT_##x))
#endif /* SCHED_DEBUG && CONFIG_JUMP_LABEL */