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Date: Fri, 14 Nov 2008 00:54:37 -0800 (PST) From: David Miller <davem@...emloft.net> To: dada1@...mosbay.com Cc: netdev@...r.kernel.org, shemminger@...tta.com Subject: Re: [PATCH] net: speedup dst_release() From: Eric Dumazet <dada1@...mosbay.com> Date: Fri, 14 Nov 2008 09:09:31 +0100 > During tbench/oprofile sessions, I found that dst_release() was in third position. ... > Instead of first checking the refcount value, then decrement it, > we use atomic_dec_return() to help CPU to make the right memory transaction > (ie getting the cache line in exclusive mode) ... > Signed-off-by: Eric Dumazet <dada1@...mosbay.com> This looks great, applied, thanks Eric. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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