jimzah/freebsd-src
1
0
Fork 0
mirror of https://github.com/freebsd/freebsd-src.git synced 2024-11-26 20:12:44 +00:00
Code Issues Actions 2 Packages Projects Releases Wiki Activity

netisr: avoid ffs(0)

Browse Source 
A rearrangement to avoid computing ffs(0) saves 128 bytes in resulting
amd64 object code.

Reviewed by:	brooks
Differential Revision:	https://reviews.freebsd.org/D41254
This commit is contained in:
Doug Moore 2024-07-26 11:51:17 -05:00
parent 1f7df75701
commit 1d897d19f3
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
sys/net/netisr.c
View File

@ -968,8 +968,8 @@ swi_net(void *arg)
nwsp->nws_flags |= NWS_RUNNING;
nwsp->nws_flags &= ~NWS_SCHEDULED;
while ((bits = nwsp->nws_pendingbits) != 0) {
while ((prot = ffs(bits)) != 0) {
prot--;
while (bits != 0) {
prot = ffs(bits) - 1;
bits &= ~(1 << prot);
(void)netisr_process_workstream_proto(nwsp, prot);
}