diff options
| author | Davidlohr Bueso <dave@stgolabs.net> | 2021-02-26 09:50:27 -0800 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2021-03-11 19:19:17 +0100 |
| commit | a1565aa4699847febfdfd6af3bf06ca17a9e16af (patch) | |
| tree | d18132fa357e9480d4a84c52f052d975b73551a3 /kernel/futex.c | |
| parent | 9a4b99fce659c03699f1cb5003ebe7c57c084d49 (diff) | |
| download | linux-a1565aa4699847febfdfd6af3bf06ca17a9e16af.tar.gz | |
kernel/futex: Make futex_wait_requeue_pi() only call fixup_owner()
A small cleanup that allows for fixup_pi_state_owner() only to be called
from fixup_owner(), and make requeue_pi uniformly call fixup_owner()
regardless of the state in which the fixup is actually needed. Of course
this makes the caller's first pi_state->owner != current check redundant,
but that should't really matter.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210226175029.50335-2-dave@stgolabs.net
Diffstat (limited to 'kernel/futex.c')
| -rw-r--r-- | kernel/futex.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/kernel/futex.c b/kernel/futex.c index db8002dbca7a8..ee09995d707b3 100644 --- a/kernel/futex.c +++ b/kernel/futex.c @@ -3241,15 +3241,14 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags, * reference count. */ - /* Check if the requeue code acquired the second futex for us. */ + /* + * Check if the requeue code acquired the second futex for us and do + * any pertinent fixup. + */ if (!q.rt_waiter) { - /* - * Got the lock. We might not be the anticipated owner if we - * did a lock-steal - fix up the PI-state in that case. - */ if (q.pi_state && (q.pi_state->owner != current)) { spin_lock(q.lock_ptr); - ret = fixup_pi_state_owner(uaddr2, &q, current); + ret = fixup_owner(uaddr2, &q, true); /* * Drop the reference to the pi state which * the requeue_pi() code acquired for us. |