diff options
| author | Waiman Long <[email protected]> | 2024-02-22 10:05:37 -0500 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2024-02-28 13:08:37 +0100 |
| commit | ca4bc2e07b716509fd279d2b449bb42f4263a9c8 (patch) | |
| tree | 63123ffe5039b9a0800bd965ba040a9e0775dafc | |
| parent | 6dfee110c6cc7a6c3c1f45a07428c15820b87c1d (diff) | |
locking/qspinlock: Fix 'wait_early' set but not used warning
When CONFIG_LOCK_EVENT_COUNTS is off, the wait_early variable will be
set but not used. This is expected. Recent compilers will not generate
wait_early code in this case.
Add the __maybe_unused attribute to wait_early for suppressing this
W=1 warning.
Reported-by: kernel test robot <[email protected]>
Signed-off-by: Waiman Long <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Reviewed-by: Boqun Feng <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
| -rw-r--r-- | kernel/locking/qspinlock_paravirt.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/locking/qspinlock_paravirt.h b/kernel/locking/qspinlock_paravirt.h index 6a0184e9c234..ae2b12f68b90 100644 --- a/kernel/locking/qspinlock_paravirt.h +++ b/kernel/locking/qspinlock_paravirt.h @@ -294,8 +294,8 @@ static void pv_wait_node(struct mcs_spinlock *node, struct mcs_spinlock *prev) { struct pv_node *pn = (struct pv_node *)node; struct pv_node *pp = (struct pv_node *)prev; + bool __maybe_unused wait_early; int loop; - bool wait_early; for (;;) { for (wait_early = false, loop = SPIN_THRESHOLD; loop; loop--) { |