Commit 37b47298 authored by Peter Zijlstra's avatar Peter Zijlstra
Browse files

sched: Disable -Wunused-but-set-variable 



The compilers can't deal with obvious DCE vs that warning, resulting
in code like:

	if (0) {
		sched sched_statistics *stats;

		stats = __schedstats_from_se(se);

		...
	}

triggering the warning. Kill the warning to make the robots stop
reporting this.

Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: default avatarNathan Chancellor <nathan@kernel.org>
Link: https://lkml.kernel.org/r/YWWPLnaZGybHsTkv@hirez.programming.kicks-ass.net
parent 42a20f86

kernel/sched/Makefile

+4 −0
Original line number Diff line number Diff line
@@ -3,6 +3,10 @@ ifdef CONFIG_FUNCTION_TRACER 
CFLAGS_REMOVE_clock.o = $(CC_FLAGS_FTRACE)

endif



# The compilers are complaining about unused variables inside an if(0) scope

# block. This is daft, shut them up.

ccflags-y += $(call cc-disable-warning, unused-but-set-variable)



# These files are disabled because they produce non-interesting flaky coverage

# that is not a function of syscall inputs. E.g. involuntary context switches.

KCOV_INSTRUMENT := n