linux-kernel - [tip: x86/cleanups] x86/percpu: Use BIT_WORD() and BIT

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Message-ID: <176277415642.498.10303464175048641694.tip-bot2@tip-bot2>
Date: Mon, 10 Nov 2025 11:29:16 -0000
From: "tip-bot2 for Uros Bizjak" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Uros Bizjak <ubizjak@...il.com>, "Borislav Petkov (AMD)" <bp@...en8.de>,
 x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [tip: x86/cleanups] x86/percpu: Use BIT_WORD() and BIT_MASK() macros

The following commit has been merged into the x86/cleanups branch of tip:

Commit-ID:     fd4e0255269bca311c90f0d0c1d5bd53c8846a59
Gitweb:        https://git.kernel.org/tip/fd4e0255269bca311c90f0d0c1d5bd53c8846a59
Author:        Uros Bizjak <ubizjak@...il.com>
AuthorDate:    Sun, 07 Sep 2025 20:48:46 +02:00
Committer:     Borislav Petkov (AMD) <bp@...en8.de>
CommitterDate: Mon, 10 Nov 2025 11:55:54 +01:00

x86/percpu: Use BIT_WORD() and BIT_MASK() macros

Use BIT_WORD() and BIT_MASK() macros from <linux/bits.h>
in <arch/x86/include/asm/percpu.h> instead of open-coding them.

No functional change intended.

Signed-off-by: Uros Bizjak <ubizjak@...il.com>
Signed-off-by: Borislav Petkov (AMD) <bp@...en8.de>
Link: https://patch.msgid.link/20250907184915.78041-1-ubizjak@gmail.com
---
 arch/x86/include/asm/percpu.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h
index 332428c..725d0ef 100644
--- a/arch/x86/include/asm/percpu.h
+++ b/arch/x86/include/asm/percpu.h
@@ -23,6 +23,7 @@
 #else /* !__ASSEMBLY__: */
 
 #include <linux/args.h>
+#include <linux/bits.h>
 #include <linux/build_bug.h>
 #include <linux/stringify.h>
 #include <asm/asm.h>
@@ -572,9 +573,9 @@ do {									\
 #define x86_this_cpu_constant_test_bit(_nr, _var)			\
 ({									\
 	unsigned long __percpu *addr__ =				\
-		(unsigned long __percpu *)&(_var) + ((_nr) / BITS_PER_LONG); \
+		(unsigned long __percpu *)&(_var) + BIT_WORD(_nr);	\
 									\
-	!!((1UL << ((_nr) % BITS_PER_LONG)) & raw_cpu_read(*addr__));	\
+	!!(BIT_MASK(_nr) & raw_cpu_read(*addr__));			\
 })
 
 #define x86_this_cpu_variable_test_bit(_nr, _var)			\