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Message-ID: <20250224071648.15913-1-ubizjak@gmail.com>
Date: Mon, 24 Feb 2025 08:16:34 +0100
From: Uros Bizjak <ubizjak@...il.com>
To: x86@...nel.org,
linux-kernel@...r.kernel.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 RESEND] x86/percpu: Unify __pcpu_op{1,2}_N() macros to __pcpu_op_N()
Unify __pcpu_op1_N() and __pcpu_op2_N() macros to __pcpu_op_N()
by applying the macro only to asm mnemonic, not to the mnemonic
plus its arguments.
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 | 38 +++++++++++++++++------------------
1 file changed, 18 insertions(+), 20 deletions(-)
diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h
index 0522a710e004..c456e54adb73 100644
--- a/arch/x86/include/asm/percpu.h
+++ b/arch/x86/include/asm/percpu.h
@@ -106,15 +106,10 @@
#define __pcpu_cast_4(val) ((u32)(((unsigned long) val) & 0xffffffff))
#define __pcpu_cast_8(val) ((u64)(val))
-#define __pcpu_op1_1(op, dst) op "b " dst
-#define __pcpu_op1_2(op, dst) op "w " dst
-#define __pcpu_op1_4(op, dst) op "l " dst
-#define __pcpu_op1_8(op, dst) op "q " dst
-
-#define __pcpu_op2_1(op, src, dst) op "b " src ", " dst
-#define __pcpu_op2_2(op, src, dst) op "w " src ", " dst
-#define __pcpu_op2_4(op, src, dst) op "l " src ", " dst
-#define __pcpu_op2_8(op, src, dst) op "q " src ", " dst
+#define __pcpu_op_1(op) op "b "
+#define __pcpu_op_2(op) op "w "
+#define __pcpu_op_4(op) op "l "
+#define __pcpu_op_8(op) op "q "
#define __pcpu_reg_1(mod, x) mod "q" (x)
#define __pcpu_reg_2(mod, x) mod "r" (x)
@@ -146,7 +141,8 @@ do { \
({ \
__pcpu_type_##size pfo_val__; \
\
- asm qual (__pcpu_op2_##size("mov", __percpu_arg([var]), "%[val]") \
+ asm qual (__pcpu_op_##size("mov") \
+ __percpu_arg([var]) ", %[val]" \
: [val] __pcpu_reg_##size("=", pfo_val__) \
: [var] "m" (__my_cpu_var(_var))); \
\
@@ -162,7 +158,8 @@ do { \
pto_tmp__ = (_val); \
(void)pto_tmp__; \
} \
- asm qual(__pcpu_op2_##size("mov", "%[val]", __percpu_arg([var])) \
+ asm qual (__pcpu_op_##size("mov") "%[val], " \
+ __percpu_arg([var]) \
: [var] "=m" (__my_cpu_var(_var)) \
: [val] __pcpu_reg_imm_##size(pto_val__)); \
} while (0)
@@ -179,7 +176,8 @@ do { \
({ \
__pcpu_type_##size pfo_val__; \
\
- asm(__pcpu_op2_##size("mov", __force_percpu_arg(a[var]), "%[val]") \
+ asm(__pcpu_op_##size("mov") \
+ __force_percpu_arg(a[var]) ", %[val]" \
: [val] __pcpu_reg_##size("=", pfo_val__) \
: [var] "i" (&(_var))); \
\
@@ -188,7 +186,7 @@ do { \
#define percpu_unary_op(size, qual, op, _var) \
({ \
- asm qual (__pcpu_op1_##size(op, __percpu_arg([var])) \
+ asm qual (__pcpu_op_##size(op) __percpu_arg([var]) \
: [var] "+m" (__my_cpu_var(_var))); \
})
@@ -201,7 +199,7 @@ do { \
pto_tmp__ = (_val); \
(void)pto_tmp__; \
} \
- asm qual(__pcpu_op2_##size(op, "%[val]", __percpu_arg([var])) \
+ asm qual (__pcpu_op_##size(op) "%[val], " __percpu_arg([var]) \
: [var] "+m" (__my_cpu_var(_var)) \
: [val] __pcpu_reg_imm_##size(pto_val__)); \
} while (0)
@@ -237,8 +235,8 @@ do { \
({ \
__pcpu_type_##size paro_tmp__ = __pcpu_cast_##size(_val); \
\
- asm qual (__pcpu_op2_##size("xadd", "%[tmp]", \
- __percpu_arg([var])) \
+ asm qual (__pcpu_op_##size("xadd") "%[tmp], " \
+ __percpu_arg([var]) \
: [tmp] __pcpu_reg_##size("+", paro_tmp__), \
[var] "+m" (__my_cpu_var(_var)) \
: : "memory"); \
@@ -281,8 +279,8 @@ do { \
__pcpu_type_##size pco_old__ = __pcpu_cast_##size(_oval); \
__pcpu_type_##size pco_new__ = __pcpu_cast_##size(_nval); \
\
- asm qual (__pcpu_op2_##size("cmpxchg", "%[nval]", \
- __percpu_arg([var])) \
+ asm qual (__pcpu_op_##size("cmpxchg") "%[nval], " \
+ __percpu_arg([var]) \
: [oval] "+a" (pco_old__), \
[var] "+m" (__my_cpu_var(_var)) \
: [nval] __pcpu_reg_##size(, pco_new__) \
@@ -298,8 +296,8 @@ do { \
__pcpu_type_##size pco_old__ = *pco_oval__; \
__pcpu_type_##size pco_new__ = __pcpu_cast_##size(_nval); \
\
- asm qual (__pcpu_op2_##size("cmpxchg", "%[nval]", \
- __percpu_arg([var])) \
+ asm qual (__pcpu_op_##size("cmpxchg") "%[nval], " \
+ __percpu_arg([var]) \
CC_SET(z) \
: CC_OUT(z) (success), \
[oval] "+a" (pco_old__), \
--
2.48.1
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