git: 542e14a59bca - stable/14 - queue(3): Wrap QMD_ASSERT()'s guard with __predict_false()

From: Olivier Certner <olce_at_FreeBSD.org>
Date: Thu, 01 May 2025 19:51:51 UTC
The branch stable/14 has been updated by olce:

URL: https://cgit.FreeBSD.org/src/commit/?id=542e14a59bcaf97d7faed9f8d3fc5fed20625e3a

commit 542e14a59bcaf97d7faed9f8d3fc5fed20625e3a
Author:     Olivier Certner <olce@FreeBSD.org>
AuthorDate: 2025-04-22 14:26:22 +0000
Commit:     Olivier Certner <olce@FreeBSD.org>
CommitDate: 2025-05-01 19:46:38 +0000

    queue(3): Wrap QMD_ASSERT()'s guard with __predict_false()
    
    Such a guard is bound to be almost always false (obviously).
    
    Reviewed by:    emaste (older version)
    MFC after:      3 days
    Sponsored by:   The FreeBSD Foundation
    Differential Revision:  https://reviews.freebsd.org/D49974
    
    (cherry picked from commit 613d66b5e17d92e5304fdc9abe4c62ba015ebf31)
---
 sys/sys/queue.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/sys/queue.h b/sys/sys/queue.h
index e88e3ad69ca3..5dabb1a241c2 100644
--- a/sys/sys/queue.h
+++ b/sys/sys/queue.h
@@ -210,7 +210,7 @@ struct qm_trace {
 
 #ifndef QMD_ASSERT
 #define QMD_ASSERT(expression, fmt, ...) do {				\
-	if (!(expression))						\
+	if (__predict_false(!(expression)))				\
 		QMD_PANIC("%s:%u: %s: " fmt,				\
 		    __FILE__, __LINE__, __func__,  ##__VA_ARGS__);	\
 } while (0)