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| author | Rasmus Villemoes <[email protected]> | 2015-01-16 14:39:55 +0000 |
|---|---|---|
| committer | Roland Dreier <[email protected]> | 2015-02-18 16:31:05 +0000 |
| commit | ba64fdca63af5a1bdda8e33d9cc8496089631dde (patch) | |
| tree | 1accd20f3b25c252a04949b693e321aa3cdcfd56 /lib/debugobjects.c | |
| parent | RDMA/ocrdma: Update the ocrdma module version string (diff) | |
| download | kernel-ba64fdca63af5a1bdda8e33d9cc8496089631dde.tar.gz kernel-ba64fdca63af5a1bdda8e33d9cc8496089631dde.zip | |
RDMA/ocrdma: Help gcc generate better code for ocrdma_srq_toggle_bit
gcc emits a surprising amount of code in order to flip a bit. One
would think that a single instruction is enough.
$ scripts/bloat-o-meter /tmp/ocrdma_verbs.o drivers/infiniband/hw/ocrdma/ocrdma_verbs.o
add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-142 (-142)
function old new delta
ocrdma_post_srq_recv 498 460 -38
ocrdma_poll_cq 2010 1962 -48
ocrdma_discard_cqes 495 439 -56
All three calls of ocrdma_srq_toggle_bit happen within spinlocks, so
saving a few useless instructions might be worthwhile.
Signed-off-by: Rasmus Villemoes <[email protected]>
Acked-by: Selvin Xavier <[email protected]>
Signed-off-by: Roland Dreier <[email protected]>
Diffstat (limited to 'lib/debugobjects.c')
0 files changed, 0 insertions, 0 deletions