Re: [RFC PATCH 3/3 -v2] x86,smp: auto tune spinlock backoff delayfactor

From: Rik van Riel
Date: Fri Dec 21 2012 - 22:40:56 EST


On 12/21/2012 10:29 PM, Eric Dumazet wrote:
On Fri, 2012-12-21 at 18:56 -0500, Rik van Riel wrote:
+ int *delay_ptr = &per_cpu(spinlock_delay, smp_processor_id());
+ int delay = *delay_ptr;

int delay = __this_cpu_read(spinlock_delay);

}
+ *delay_ptr = delay;

__this_cpu_write(spinlock_delay, delay);

Thanks for that cleanup. I have applied it to my code.

--
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/