diff options
| author | Waiman Long <[email protected]> | 2019-02-24 20:14:13 -0500 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2019-02-28 07:55:38 +0100 |
| commit | 733000c7ffd9d9c8c4fdfd82f0d41956c8cf0537 (patch) | |
| tree | 6e38cfcfeba4e5e5539a5822ef6fe04a5bc7e929 | |
| parent | 02e525b2aff1d665f6466e1d123ee4cb69f1d4b0 (diff) | |
locking/qspinlock: Remove unnecessary BUG_ON() call
With the > 4 nesting levels case handled by the commit:
d682b596d993 ("locking/qspinlock: Handle > 4 slowpath nesting levels")
the BUG_ON() call in encode_tail() will never actually be triggered.
Remove it.
Signed-off-by: Waiman Long <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Acked-by: Will Deacon <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
| -rw-r--r-- | kernel/locking/qspinlock.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/kernel/locking/qspinlock.c b/kernel/locking/qspinlock.c index 21ee51b47961..5e9247dc2515 100644 --- a/kernel/locking/qspinlock.c +++ b/kernel/locking/qspinlock.c @@ -124,9 +124,6 @@ static inline __pure u32 encode_tail(int cpu, int idx) { u32 tail; -#ifdef CONFIG_DEBUG_SPINLOCK - BUG_ON(idx > 3); -#endif tail = (cpu + 1) << _Q_TAIL_CPU_OFFSET; tail |= idx << _Q_TAIL_IDX_OFFSET; /* assume < 4 */ |