From: Eric Dumazet <[EMAIL PROTECTED]> Date: Thu, 22 Feb 2007 15:50:15 +0100
> sk_backlog is a critical field of struct sock. (known famous words) > > It is (ab)used in hot paths, in particular in release_sock(), tcp_recvmsg(), > tcp_v4_rcv(), sk_receive_skb(). > > It really makes sense to place it next to sk_lock, because sk_backlog is only > used after sk_lock locked (and thus memory cache line in L1 cache). This > should reduce cache misses and sk_lock acquisition time. > > (In theory, we could only move the head pointer near sk_lock, and leaving > tail > far away, because 'tail' is normally not so hot, but keep it simple :) ) > > Signed-off-by: Eric Dumazet <[EMAIL PROTECTED]> Applied, thanks a lot Eric. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
