git: 42c2cd1ffbdf - main - amd64: Annotate an unlikely condition in smp_targeted_tlb_shootdown()

From: Mark Johnston <markj_at_FreeBSD.org>
Date: Mon, 15 Nov 2021 18:03:02 UTC
The branch main has been updated by markj:

URL: https://cgit.FreeBSD.org/src/commit/?id=42c2cd1ffbdfa706764362eca1b7bf5eeeee2aef

commit 42c2cd1ffbdfa706764362eca1b7bf5eeeee2aef
Author:     Mark Johnston <markj@FreeBSD.org>
AuthorDate: 2021-11-15 17:40:00 +0000
Commit:     Mark Johnston <markj@FreeBSD.org>
CommitDate: 2021-11-15 18:01:30 +0000

    amd64: Annotate an unlikely condition in smp_targeted_tlb_shootdown()
    
    Reviewed by:    alc, kib
    MFC after:      1 week
    Sponsored by:   The FreeBSD Foundation
---
 sys/amd64/amd64/mp_machdep.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/amd64/amd64/mp_machdep.c b/sys/amd64/amd64/mp_machdep.c
index e954e8cebbb9..fb8c2af271ed 100644
--- a/sys/amd64/amd64/mp_machdep.c
+++ b/sys/amd64/amd64/mp_machdep.c
@@ -625,7 +625,7 @@ smp_targeted_tlb_shootdown(cpuset_t mask, pmap_t pmap, vm_offset_t addr1,
 	 * It is not necessary to signal other CPUs while booting or
 	 * when in the debugger.
 	 */
-	if (kdb_active || KERNEL_PANICKED() || !smp_started)
+	if (__predict_false(kdb_active || KERNEL_PANICKED() || !smp_started))
 		goto local_cb;
 
 	KASSERT(curthread->td_pinned > 0, ("curthread not pinned"));