Compiling a kernel with both FAIR_GROUP_SCHED=n and RT_GROUP_SCHED=n
will generate a warning using W=1,
kernel/sched/core.c: In function 'sched_init':
kernel/sched/core.c:5906:32: warning: variable 'ptr' set but not used
[-Wunused-but-set-variable]
unsigned long alloc_size = 0, ptr;
^~~
It apparently the maintainers don't like the previous fix [1] which
contains ugly idefs, so silence it by appending the __maybe_unused
attribute for it instead.
[1] https://lore.kernel.org/lkml/[email protected]/
Reviewed-by: Valentin Schneider <[email protected]>
Signed-off-by: Qian Cai <[email protected]>
---
v2: Incorporate the feedback from Valentin.
kernel/sched/core.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 874c427742a9..12b9b69c8a66 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -5903,7 +5903,8 @@ int in_sched_functions(unsigned long addr)
void __init sched_init(void)
{
int i, j;
- unsigned long alloc_size = 0, ptr;
+ unsigned long alloc_size = 0;
+ unsigned long __maybe_unused ptr;
wait_bit_init();
--
1.8.3.1
