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| author | Eric Dumazet <dada1@cosmosbay.com> | 2007-03-06 20:23:10 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-04-25 22:23:49 -0700 |
| commit | 243bbcaa09e8482aa28065cbc2eb99f0ca2fc8d6 (patch) | |
| tree | e542a4ed151de034779fa311f8d89a55ac90f685 /net/ipv6/udp.c | |
| parent | 43e683926f808cec9802466c27cee7499eda3d11 (diff) | |
| download | lwn-243bbcaa09e8482aa28065cbc2eb99f0ca2fc8d6.tar.gz lwn-243bbcaa09e8482aa28065cbc2eb99f0ca2fc8d6.zip | |
[IPV4]: Optimize inet_getpeer()
1) Some sysctl vars are declared __read_mostly
2) We can avoid updating stack[] when doing an AVL lookup only.
lookup() macro is extended to receive a second parameter, that may be NULL
in case of a pure lookup (no need to save the AVL path). This removes
unnecessary instructions, because compiler knows if this _stack parameter is
NULL or not.
text size of net/ipv4/inetpeer.o is 2063 bytes instead of 2107 on x86_64
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/udp.c')
0 files changed, 0 insertions, 0 deletions