linux-kernel - [PATCH 1/2] x86/percpu: Rename percpu_stable_op() to __raw_cpu_read

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Date: Mon, 20 May 2024 10:09:24 +0200
From: Uros Bizjak <ubizjak@...il.com>
To: linux-kernel@...r.kernel.org,
	x86@...nel.org
Cc: Uros Bizjak <ubizjak@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...nel.org>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: [PATCH 1/2] x86/percpu: Rename percpu_stable_op() to __raw_cpu_read_stable()

Rename percpu_stable_op() to __raw_cpu_read_stable() to be
in line with other read/write percpu accessors.

No functional change intended.

Signed-off-by: Uros Bizjak <ubizjak@...il.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Dave Hansen <dave.hansen@...ux.intel.com>
Cc: "H. Peter Anvin" <hpa@...or.com>
---
 arch/x86/include/asm/percpu.h | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h
index c77393cd0273..39762fcfe328 100644
--- a/arch/x86/include/asm/percpu.h
+++ b/arch/x86/include/asm/percpu.h
@@ -190,10 +190,10 @@ do {									\
 
 #endif /* CONFIG_USE_X86_SEG_SUPPORT */
 
-#define percpu_stable_op(size, op, _var)				\
+#define __raw_cpu_read_stable(size, _var)				\
 ({									\
 	__pcpu_type_##size pfo_val__;					\
-	asm(__pcpu_op2_##size(op, __force_percpu_arg(a[var]), "%[val]")	\
+	asm(__pcpu_op2_##size("mov", __force_percpu_arg(a[var]), "%[val]") \
 	    : [val] __pcpu_reg_##size("=", pfo_val__)			\
 	    : [var] "i" (&(_var)));					\
 	(typeof(_var))(unsigned long) pfo_val__;			\
@@ -480,9 +480,9 @@ do {									\
 
 #define this_cpu_read_const(pcp)	__raw_cpu_read_const(pcp)
 
-#define this_cpu_read_stable_1(pcp)	percpu_stable_op(1, "mov", pcp)
-#define this_cpu_read_stable_2(pcp)	percpu_stable_op(2, "mov", pcp)
-#define this_cpu_read_stable_4(pcp)	percpu_stable_op(4, "mov", pcp)
+#define this_cpu_read_stable_1(pcp)	__raw_cpu_read_stable(1, pcp)
+#define this_cpu_read_stable_2(pcp)	__raw_cpu_read_stable(2, pcp)
+#define this_cpu_read_stable_4(pcp)	__raw_cpu_read_stable(4, pcp)
 
 #define raw_cpu_add_1(pcp, val)		percpu_add_op(1, , (pcp), val)
 #define raw_cpu_add_2(pcp, val)		percpu_add_op(2, , (pcp), val)
@@ -535,7 +535,7 @@ do {									\
  * 32 bit must fall back to generic operations.
  */
 #ifdef CONFIG_X86_64
-#define this_cpu_read_stable_8(pcp)	percpu_stable_op(8, "mov", pcp)
+#define this_cpu_read_stable_8(pcp)	__raw_cpu_read_stable(8, pcp)
 
 #define raw_cpu_add_8(pcp, val)			percpu_add_op(8, , (pcp), val)
 #define raw_cpu_and_8(pcp, val)			percpu_binary_op(8, , "and", (pcp), val)
-- 
2.45.1