IB/mlx4: Micro-optimize mlx4_ib_post_send()
authorRoland Dreier <rolandd@cisco.com>
Thu, 17 Apr 2008 04:09:28 +0000 (21:09 -0700)
committerRoland Dreier <rolandd@cisco.com>
Thu, 17 Apr 2008 04:09:28 +0000 (21:09 -0700)
commitb4ec6b74184e663d253500f6a83d0ab1581b7af6
treea838a17ddabf53c01c1115f33b3ab0c0c8ed1d75
parent90d76602de2984b7994f356d73010c071c690931
IB/mlx4: Micro-optimize mlx4_ib_post_send()

Rather than have build_mlx_header() return a negative value on failure
and the length of the segments it builds on success, add a pointer
parameter to return the length and return 0 on success.  This matches
the calling convention used for build_lso_seg() and generates slightly
smaller code -- eg, on 64-bit x86:

add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-22 (-22)
function                                     old     new   delta
mlx4_ib_post_send                           2023    2001     -22

Signed-off-by: Roland Dreier <rolandd@cisco.com>
drivers/infiniband/hw/mlx4/qp.c