Re: [PATCH] i386 spinlocks should use the full 32 bits, not only 8bits

From: Andrew Morton
Date: Mon Oct 17 2005 - 02:13:20 EST


Eric Dumazet <dada1@xxxxxxxxxxxxx> wrote:
>
> 2) The unlock sequence is not anymore inlined. It appears twice or three times
> in the kernel.

Is that intentional though? With <randon .config> my mm/swapfile.i has an
unreferenced

static inline void __raw_spin_unlock(raw_spinlock_t *lock)
{
__asm__ __volatile__(
"movb $1,%0" :"=m" (lock->slock) : : "memory"
);
}

which either a) shouldn't be there or b) should be referenced.

Ingo, can you confirm that x86's spin_unlock is never inlined? If so,
what's my __raw_spin_unlock() doing there?

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