| commit | b3226184af6c13c9d5d38f13f0ef8e03f718bbf7 | |
| author | Roland Dreier <rolandd@cisco.com> | |
| Fri, 25 Jan 2008 22:15:34 +0000 (25 14:15 -0800) | ||
| committer | Roland Dreier <rolandd@cisco.com> | |
| Fri, 25 Jan 2008 22:15:34 +0000 (25 14:15 -0800) | ||
| tree | e79a895f7c320ada2cf8a1faffb735f9fc098c8a | treesnapshot (tar.gz zip) |
| parent | e57895d38991036f9ccf193b70fc5ebd5f6e6dc9 | commitdiff |
IB/mlx4: Micro-optimize mlx4_ib_poll_one()
Rather than byte-swapping cqe->g_mlpath_rqpn each time we extract a
field from it, byte-swap it once into a temporary variable. This
results in smaller, better code -- eg, on 32-bit x86:
add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-5 (-5)
function old new delta
mlx4_ib_poll_cq 1188 1183 -5
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Rather than byte-swapping cqe->g_mlpath_rqpn each time we extract a
field from it, byte-swap it once into a temporary variable. This
results in smaller, better code -- eg, on 32-bit x86:
add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-5 (-5)
function old new delta
mlx4_ib_poll_cq 1188 1183 -5
Signed-off-by: Roland Dreier <rolandd@cisco.com>
| drivers/infiniband/hw/mlx4/cq.c | diffblobblamehistory |