CVS commit: src/sys/kern

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Sun Apr  9 08:17:36 UTC 2023

Modified Files:
        src/sys/kern: kern_lock.c

Log Message:
ASSERT_SLEEPABLE(9): Micro-optimize this a little bit.

This convinces gcc to do less -- make a smaller stack frame, compute
fewer conditional moves in favour of predicted-not-taken branches --
in the fast path where we are sleepable as the caller expects.

Wasn't able to convince it to do the ncsw loop with a
predicted-not-taken branch, but let's leave the __predict_false in
there anyway because it's still a good prediction.


To generate a diff of this commit:
cvs rdiff -u -r1.183 -r1.184 src/sys/kern/kern_lock.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.