Re: [PATCH 4/4, v2] x86: enlightenment for ticket spin locks -improve yield behavior on Xen

[Peter Zijlstra]

On Tue, 2010-06-29 at 15:35 +0100, Jan Beulich wrote:
> 
> The (only) additional overhead this introduces for native execution is
> the writing of the owning CPU in the lock acquire paths. 

Uhm, and growing the size of spinlock_t to 6 (or 8 bytes when aligned)
bytes when NR_CPUS>256.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/