Author: mjg
Date: Thu Jul 2 12:58:07 2020
New Revision: 362890
URL: https://svnweb.freebsd.org/changeset/base/362890
Log:
cred: add a prediction to crfree for td->td_realucred == cr
This matches crhold and eliminates an assembly maze in the common case.
Modified:
head/sys/kern/kern_prot.c
Modified: head/sys/kern/kern_prot.c
==============================================================================
--- head/sys/kern/kern_prot.c Thu Jul 2 12:56:20 2020 (r362889)
+++ head/sys/kern/kern_prot.c Thu Jul 2 12:58:07 2020 (r362890)
@@ -1985,7 +1985,7 @@ crfree(struct ucred *cr)
struct thread *td;
td = curthread;
- if (td->td_realucred == cr) {
+ if (__predict_true(td->td_realucred == cr)) {
KASSERT(cr->cr_users > 0, ("%s: users %d not > 0 on cred %p",
__func__, cr->cr_users, cr));
td->td_ucredref--;
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