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-rw-r--r--arch/x86/include/asm/percpu.h104
1 files changed, 91 insertions, 13 deletions
diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h
index b65a36defeb..0c44196b78a 100644
--- a/arch/x86/include/asm/percpu.h
+++ b/arch/x86/include/asm/percpu.h
@@ -74,31 +74,31 @@ extern void __bad_percpu_size(void);
#define percpu_to_op(op, var, val) \
do { \
- typedef typeof(var) T__; \
+ typedef typeof(var) pto_T__; \
if (0) { \
- T__ tmp__; \
- tmp__ = (val); \
+ pto_T__ pto_tmp__; \
+ pto_tmp__ = (val); \
} \
switch (sizeof(var)) { \
case 1: \
asm(op "b %1,"__percpu_arg(0) \
: "+m" (var) \
- : "qi" ((T__)(val))); \
+ : "qi" ((pto_T__)(val))); \
break; \
case 2: \
asm(op "w %1,"__percpu_arg(0) \
: "+m" (var) \
- : "ri" ((T__)(val))); \
+ : "ri" ((pto_T__)(val))); \
break; \
case 4: \
asm(op "l %1,"__percpu_arg(0) \
: "+m" (var) \
- : "ri" ((T__)(val))); \
+ : "ri" ((pto_T__)(val))); \
break; \
case 8: \
asm(op "q %1,"__percpu_arg(0) \
: "+m" (var) \
- : "re" ((T__)(val))); \
+ : "re" ((pto_T__)(val))); \
break; \
default: __bad_percpu_size(); \
} \
@@ -106,31 +106,31 @@ do { \
#define percpu_from_op(op, var, constraint) \
({ \
- typeof(var) ret__; \
+ typeof(var) pfo_ret__; \
switch (sizeof(var)) { \
case 1: \
asm(op "b "__percpu_arg(1)",%0" \
- : "=q" (ret__) \
+ : "=q" (pfo_ret__) \
: constraint); \
break; \
case 2: \
asm(op "w "__percpu_arg(1)",%0" \
- : "=r" (ret__) \
+ : "=r" (pfo_ret__) \
: constraint); \
break; \
case 4: \
asm(op "l "__percpu_arg(1)",%0" \
- : "=r" (ret__) \
+ : "=r" (pfo_ret__) \
: constraint); \
break; \
case 8: \
asm(op "q "__percpu_arg(1)",%0" \
- : "=r" (ret__) \
+ : "=r" (pfo_ret__) \
: constraint); \
break; \
default: __bad_percpu_size(); \
} \
- ret__; \
+ pfo_ret__; \
})
/*
@@ -153,6 +153,84 @@ do { \
#define percpu_or(var, val) percpu_to_op("or", per_cpu__##var, val)
#define percpu_xor(var, val) percpu_to_op("xor", per_cpu__##var, val)
+#define __this_cpu_read_1(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
+#define __this_cpu_read_2(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
+#define __this_cpu_read_4(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
+
+#define __this_cpu_write_1(pcp, val) percpu_to_op("mov", (pcp), val)
+#define __this_cpu_write_2(pcp, val) percpu_to_op("mov", (pcp), val)
+#define __this_cpu_write_4(pcp, val) percpu_to_op("mov", (pcp), val)
+#define __this_cpu_add_1(pcp, val) percpu_to_op("add", (pcp), val)
+#define __this_cpu_add_2(pcp, val) percpu_to_op("add", (pcp), val)
+#define __this_cpu_add_4(pcp, val) percpu_to_op("add", (pcp), val)
+#define __this_cpu_and_1(pcp, val) percpu_to_op("and", (pcp), val)
+#define __this_cpu_and_2(pcp, val) percpu_to_op("and", (pcp), val)
+#define __this_cpu_and_4(pcp, val) percpu_to_op("and", (pcp), val)
+#define __this_cpu_or_1(pcp, val) percpu_to_op("or", (pcp), val)
+#define __this_cpu_or_2(pcp, val) percpu_to_op("or", (pcp), val)
+#define __this_cpu_or_4(pcp, val) percpu_to_op("or", (pcp), val)
+#define __this_cpu_xor_1(pcp, val) percpu_to_op("xor", (pcp), val)
+#define __this_cpu_xor_2(pcp, val) percpu_to_op("xor", (pcp), val)
+#define __this_cpu_xor_4(pcp, val) percpu_to_op("xor", (pcp), val)
+
+#define this_cpu_read_1(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
+#define this_cpu_read_2(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
+#define this_cpu_read_4(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
+#define this_cpu_write_1(pcp, val) percpu_to_op("mov", (pcp), val)
+#define this_cpu_write_2(pcp, val) percpu_to_op("mov", (pcp), val)
+#define this_cpu_write_4(pcp, val) percpu_to_op("mov", (pcp), val)
+#define this_cpu_add_1(pcp, val) percpu_to_op("add", (pcp), val)
+#define this_cpu_add_2(pcp, val) percpu_to_op("add", (pcp), val)
+#define this_cpu_add_4(pcp, val) percpu_to_op("add", (pcp), val)
+#define this_cpu_and_1(pcp, val) percpu_to_op("and", (pcp), val)
+#define this_cpu_and_2(pcp, val) percpu_to_op("and", (pcp), val)
+#define this_cpu_and_4(pcp, val) percpu_to_op("and", (pcp), val)
+#define this_cpu_or_1(pcp, val) percpu_to_op("or", (pcp), val)
+#define this_cpu_or_2(pcp, val) percpu_to_op("or", (pcp), val)
+#define this_cpu_or_4(pcp, val) percpu_to_op("or", (pcp), val)
+#define this_cpu_xor_1(pcp, val) percpu_to_op("xor", (pcp), val)
+#define this_cpu_xor_2(pcp, val) percpu_to_op("xor", (pcp), val)
+#define this_cpu_xor_4(pcp, val) percpu_to_op("xor", (pcp), val)
+
+#define irqsafe_cpu_add_1(pcp, val) percpu_to_op("add", (pcp), val)
+#define irqsafe_cpu_add_2(pcp, val) percpu_to_op("add", (pcp), val)
+#define irqsafe_cpu_add_4(pcp, val) percpu_to_op("add", (pcp), val)
+#define irqsafe_cpu_and_1(pcp, val) percpu_to_op("and", (pcp), val)
+#define irqsafe_cpu_and_2(pcp, val) percpu_to_op("and", (pcp), val)
+#define irqsafe_cpu_and_4(pcp, val) percpu_to_op("and", (pcp), val)
+#define irqsafe_cpu_or_1(pcp, val) percpu_to_op("or", (pcp), val)
+#define irqsafe_cpu_or_2(pcp, val) percpu_to_op("or", (pcp), val)
+#define irqsafe_cpu_or_4(pcp, val) percpu_to_op("or", (pcp), val)
+#define irqsafe_cpu_xor_1(pcp, val) percpu_to_op("xor", (pcp), val)
+#define irqsafe_cpu_xor_2(pcp, val) percpu_to_op("xor", (pcp), val)
+#define irqsafe_cpu_xor_4(pcp, val) percpu_to_op("xor", (pcp), val)
+
+/*
+ * Per cpu atomic 64 bit operations are only available under 64 bit.
+ * 32 bit must fall back to generic operations.
+ */
+#ifdef CONFIG_X86_64
+#define __this_cpu_read_8(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
+#define __this_cpu_write_8(pcp, val) percpu_to_op("mov", (pcp), val)
+#define __this_cpu_add_8(pcp, val) percpu_to_op("add", (pcp), val)
+#define __this_cpu_and_8(pcp, val) percpu_to_op("and", (pcp), val)
+#define __this_cpu_or_8(pcp, val) percpu_to_op("or", (pcp), val)
+#define __this_cpu_xor_8(pcp, val) percpu_to_op("xor", (pcp), val)
+
+#define this_cpu_read_8(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
+#define this_cpu_write_8(pcp, val) percpu_to_op("mov", (pcp), val)
+#define this_cpu_add_8(pcp, val) percpu_to_op("add", (pcp), val)
+#define this_cpu_and_8(pcp, val) percpu_to_op("and", (pcp), val)
+#define this_cpu_or_8(pcp, val) percpu_to_op("or", (pcp), val)
+#define this_cpu_xor_8(pcp, val) percpu_to_op("xor", (pcp), val)
+
+#define irqsafe_cpu_add_8(pcp, val) percpu_to_op("add", (pcp), val)
+#define irqsafe_cpu_and_8(pcp, val) percpu_to_op("and", (pcp), val)
+#define irqsafe_cpu_or_8(pcp, val) percpu_to_op("or", (pcp), val)
+#define irqsafe_cpu_xor_8(pcp, val) percpu_to_op("xor", (pcp), val)
+
+#endif
+
/* This is not atomic against other CPUs -- CPU preemption needs to be off */
#define x86_test_and_clear_bit_percpu(bit, var) \
({ \
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-29 18:08:24 +0000