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locking/qspinlock: Merge 'struct __qspinlock' into 'struct qspinlock'

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'struct __qspinlock' provides a handy union of fields so that
subcomponents of the lockword can be accessed by name, without having to
manage shifts and masks explicitly and take endianness into account.

This is useful in qspinlock.h and also potentially in arch headers, so
move the 'struct __qspinlock' into 'struct qspinlock' and kill the extra
definition.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Waiman Long <longman@redhat.com>
Acked-by: Boqun Feng <boqun.feng@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-arm-kernel@lists.infradead.org
Cc: paulmck@linux.vnet.ibm.com
Link: http://lkml.kernel.org/r/1524738868-31318-3-git-send-email-will.deacon@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Will Deacon
2018-04-26 11:34:16 +01:00
committed by Ingo Molnar
parent fcfdfe30e3
commit 625e88be1f
5 changed files with 46 additions and 71 deletions
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2
arch/x86/include/asm/qspinlock.h
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@@ -16,7 +16,7 @@
*/
static inline void native_queued_spin_unlock(struct qspinlock *lock)
{
smp_store_release((u8 *)lock, 0);
smp_store_release(&lock->locked, 0);
}
#ifdef CONFIG_PARAVIRT_SPINLOCKS