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Date: Tue, 30 Apr 2024 11:17:21 +0200
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 -tip 2/5] x86/percpu: Move some percpu macros around
Move some percpu macros around to make a follow-up
patch more readable.
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 | 63 +++++++++++++++++++----------------
1 file changed, 34 insertions(+), 29 deletions(-)
diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h
index cc40d8d9c272..08113a2e5377 100644
--- a/arch/x86/include/asm/percpu.h
+++ b/arch/x86/include/asm/percpu.h
@@ -144,6 +144,29 @@
#define __pcpu_reg_imm_4(x) "ri" (x)
#define __pcpu_reg_imm_8(x) "re" (x)
+#ifdef CONFIG_USE_X86_SEG_SUPPORT
+
+#define __raw_cpu_read(qual, pcp) \
+({ \
+ *(qual __my_cpu_type(pcp) *)__my_cpu_ptr(&(pcp)); \
+})
+
+#define __raw_cpu_write(qual, pcp, val) \
+do { \
+ *(qual __my_cpu_type(pcp) *)__my_cpu_ptr(&(pcp)) = (val); \
+} while (0)
+
+#else /* CONFIG_USE_X86_SEG_SUPPORT */
+
+#define percpu_from_op(size, qual, op, _var) \
+({ \
+ __pcpu_type_##size pfo_val__; \
+ asm qual (__pcpu_op2_##size(op, __percpu_arg([var]), "%[val]") \
+ : [val] __pcpu_reg_##size("=", pfo_val__) \
+ : [var] "m" (__my_cpu_var(_var))); \
+ (typeof(_var))(unsigned long) pfo_val__; \
+})
+
#define percpu_to_op(size, qual, op, _var, _val) \
do { \
__pcpu_type_##size pto_val__ = __pcpu_cast_##size(_val); \
@@ -157,6 +180,17 @@ do { \
: [val] __pcpu_reg_imm_##size(pto_val__)); \
} while (0)
+#endif /* CONFIG_USE_X86_SEG_SUPPORT */
+
+#define percpu_stable_op(size, op, _var) \
+({ \
+ __pcpu_type_##size pfo_val__; \
+ asm(__pcpu_op2_##size(op, __force_percpu_arg(a[var]), "%[val]") \
+ : [val] __pcpu_reg_##size("=", pfo_val__) \
+ : [var] "i" (&(_var))); \
+ (typeof(_var))(unsigned long) pfo_val__; \
+})
+
#define percpu_unary_op(size, qual, op, _var) \
({ \
asm qual (__pcpu_op1_##size(op, __percpu_arg([var])) \
@@ -198,24 +232,6 @@ do { \
percpu_binary_op(size, qual, "add", var, val); \
} while (0)
-#define percpu_from_op(size, qual, op, _var) \
-({ \
- __pcpu_type_##size pfo_val__; \
- asm qual (__pcpu_op2_##size(op, __percpu_arg([var]), "%[val]") \
- : [val] __pcpu_reg_##size("=", pfo_val__) \
- : [var] "m" (__my_cpu_var(_var))); \
- (typeof(_var))(unsigned long) pfo_val__; \
-})
-
-#define percpu_stable_op(size, op, _var) \
-({ \
- __pcpu_type_##size pfo_val__; \
- asm(__pcpu_op2_##size(op, __force_percpu_arg(a[var]), "%[val]") \
- : [val] __pcpu_reg_##size("=", pfo_val__) \
- : [var] "i" (&(_var))); \
- (typeof(_var))(unsigned long) pfo_val__; \
-})
-
/*
* Add return operation
*/
@@ -433,17 +449,6 @@ do { \
#define this_cpu_read_stable(pcp) __pcpu_size_call_return(this_cpu_read_stable_, pcp)
#ifdef CONFIG_USE_X86_SEG_SUPPORT
-
-#define __raw_cpu_read(qual, pcp) \
-({ \
- *(qual __my_cpu_type(pcp) *)__my_cpu_ptr(&(pcp)); \
-})
-
-#define __raw_cpu_write(qual, pcp, val) \
-do { \
- *(qual __my_cpu_type(pcp) *)__my_cpu_ptr(&(pcp)) = (val); \
-} while (0)
-
#define raw_cpu_read_1(pcp) __raw_cpu_read(, pcp)
#define raw_cpu_read_2(pcp) __raw_cpu_read(, pcp)
#define raw_cpu_read_4(pcp) __raw_cpu_read(, pcp)
--
2.44.0
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