[mirror_ubuntu-bionic-kernel.git] / arch / x86 / include / asm / percpu.h

#ifndef _ASM_X86_PERCPU_H
#define _ASM_X86_PERCPU_H

#ifdef CONFIG_X86_64
#define __percpu_seg		gs
#define __percpu_mov_op		movq
#else
#define __percpu_seg		fs
#define __percpu_mov_op		movl
#endif

#ifdef __ASSEMBLY__

/*
 * PER_CPU finds an address of a per-cpu variable.
 *
 * Args:
 *    var - variable name
 *    reg - 32bit register
 *
 * The resulting address is stored in the "reg" argument.
 *
 * Example:
 *    PER_CPU(cpu_gdt_descr, %ebx)
 */
#ifdef CONFIG_SMP
#define PER_CPU(var, reg)						\
	__percpu_mov_op %__percpu_seg:per_cpu__this_cpu_off, reg;	\
	lea per_cpu__##var(reg), reg
#define PER_CPU_VAR(var)	%__percpu_seg:per_cpu__##var
#else /* ! SMP */
#define PER_CPU(var, reg)						\
	__percpu_mov_op $per_cpu__##var, reg
#define PER_CPU_VAR(var)	per_cpu__##var
#endif	/* SMP */

#ifdef CONFIG_X86_64_SMP
#define INIT_PER_CPU_VAR(var)  init_per_cpu__##var
#else
#define INIT_PER_CPU_VAR(var)  per_cpu__##var
#endif

#else /* ...!ASSEMBLY */

#include <linux/kernel.h>
#include <linux/stringify.h>

#ifdef CONFIG_SMP
#define __percpu_arg(x)		"%%"__stringify(__percpu_seg)":%P" #x
#define __my_cpu_offset		percpu_read(this_cpu_off)
#else
#define __percpu_arg(x)		"%P" #x
#endif

/*
 * Initialized pointers to per-cpu variables needed for the boot
 * processor need to use these macros to get the proper address
 * offset from __per_cpu_load on SMP.
 *
 * There also must be an entry in vmlinux_64.lds.S
 */
#define DECLARE_INIT_PER_CPU(var) \
       extern typeof(per_cpu_var(var)) init_per_cpu_var(var)

#ifdef CONFIG_X86_64_SMP
#define init_per_cpu_var(var)  init_per_cpu__##var
#else
#define init_per_cpu_var(var)  per_cpu_var(var)
#endif

/* For arch-specific code, we can use direct single-insn ops (they
 * don't give an lvalue though). */
extern void __bad_percpu_size(void);

#define percpu_to_op(op, var, val)			\
do {							\
	typedef typeof(var) pto_T__;			\
	if (0) {					\
		pto_T__ pto_tmp__;			\
		pto_tmp__ = (val);			\
	}						\
	switch (sizeof(var)) {				\
	case 1:						\
		asm(op "b %1,"__percpu_arg(0)		\
		    : "+m" (var)			\
		    : "qi" ((pto_T__)(val)));		\
		break;					\
	case 2:						\
		asm(op "w %1,"__percpu_arg(0)		\
		    : "+m" (var)			\
		    : "ri" ((pto_T__)(val)));		\
		break;					\
	case 4:						\
		asm(op "l %1,"__percpu_arg(0)		\
		    : "+m" (var)			\
		    : "ri" ((pto_T__)(val)));		\
		break;					\
	case 8:						\
		asm(op "q %1,"__percpu_arg(0)		\
		    : "+m" (var)			\
		    : "re" ((pto_T__)(val)));		\
		break;					\
	default: __bad_percpu_size();			\
	}						\
} while (0)

#define percpu_from_op(op, var, constraint)		\
({							\
	typeof(var) pfo_ret__;				\
	switch (sizeof(var)) {				\
	case 1:						\
		asm(op "b "__percpu_arg(1)",%0"		\
		    : "=q" (pfo_ret__)			\
		    : constraint);			\
		break;					\
	case 2:						\
		asm(op "w "__percpu_arg(1)",%0"		\
		    : "=r" (pfo_ret__)			\
		    : constraint);			\
		break;					\
	case 4:						\
		asm(op "l "__percpu_arg(1)",%0"		\
		    : "=r" (pfo_ret__)			\
		    : constraint);			\
		break;					\
	case 8:						\
		asm(op "q "__percpu_arg(1)",%0"		\
		    : "=r" (pfo_ret__)			\
		    : constraint);			\
		break;					\
	default: __bad_percpu_size();			\
	}						\
	pfo_ret__;					\
})

/*
 * percpu_read() makes gcc load the percpu variable every time it is
 * accessed while percpu_read_stable() allows the value to be cached.
 * percpu_read_stable() is more efficient and can be used if its value
 * is guaranteed to be valid across cpus.  The current users include
 * get_current() and get_thread_info() both of which are actually
 * per-thread variables implemented as per-cpu variables and thus
 * stable for the duration of the respective task.
 */
#define percpu_read(var)	percpu_from_op("mov", per_cpu__##var,	\
					       "m" (per_cpu__##var))
#define percpu_read_stable(var)	percpu_from_op("mov", per_cpu__##var,	\
					       "p" (&per_cpu__##var))
#define percpu_write(var, val)	percpu_to_op("mov", per_cpu__##var, val)
#define percpu_add(var, val)	percpu_to_op("add", per_cpu__##var, val)
#define percpu_sub(var, val)	percpu_to_op("sub", per_cpu__##var, val)
#define percpu_and(var, val)	percpu_to_op("and", per_cpu__##var, val)
#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)				\
({									\
	int old__;							\
	asm volatile("btr %2,"__percpu_arg(1)"\n\tsbbl %0,%0"		\
		     : "=r" (old__), "+m" (per_cpu__##var)		\
		     : "dIr" (bit));					\
	old__;								\
})

#include <asm-generic/percpu.h>

/* We can use this directly for local CPU (faster). */
DECLARE_PER_CPU(unsigned long, this_cpu_off);

#endif /* !__ASSEMBLY__ */

#ifdef CONFIG_SMP

/*
 * Define the "EARLY_PER_CPU" macros.  These are used for some per_cpu
 * variables that are initialized and accessed before there are per_cpu
 * areas allocated.
 */

#define	DEFINE_EARLY_PER_CPU(_type, _name, _initvalue)			\
	DEFINE_PER_CPU(_type, _name) = _initvalue;			\
	__typeof__(_type) _name##_early_map[NR_CPUS] __initdata =	\
				{ [0 ... NR_CPUS-1] = _initvalue };	\
	__typeof__(_type) *_name##_early_ptr __refdata = _name##_early_map

#define EXPORT_EARLY_PER_CPU_SYMBOL(_name)			\
	EXPORT_PER_CPU_SYMBOL(_name)

#define DECLARE_EARLY_PER_CPU(_type, _name)			\
	DECLARE_PER_CPU(_type, _name);				\
	extern __typeof__(_type) *_name##_early_ptr;		\
	extern __typeof__(_type)  _name##_early_map[]

#define	early_per_cpu_ptr(_name) (_name##_early_ptr)
#define	early_per_cpu_map(_name, _idx) (_name##_early_map[_idx])
#define	early_per_cpu(_name, _cpu) 				\
	*(early_per_cpu_ptr(_name) ?				\
		&early_per_cpu_ptr(_name)[_cpu] :		\
		&per_cpu(_name, _cpu))

#else	/* !CONFIG_SMP */
#define	DEFINE_EARLY_PER_CPU(_type, _name, _initvalue)		\
	DEFINE_PER_CPU(_type, _name) = _initvalue

#define EXPORT_EARLY_PER_CPU_SYMBOL(_name)			\
	EXPORT_PER_CPU_SYMBOL(_name)

#define DECLARE_EARLY_PER_CPU(_type, _name)			\
	DECLARE_PER_CPU(_type, _name)

#define	early_per_cpu(_name, _cpu) per_cpu(_name, _cpu)
#define	early_per_cpu_ptr(_name) NULL
/* no early_per_cpu_map() */

#endif	/* !CONFIG_SMP */

#endif /* _ASM_X86_PERCPU_H */
Commit	Line	Data
1965aae3 PA	1	#ifndef _ASM_X86_PERCPU_H
1965aae3 PA	2	#define _ASM_X86_PERCPU_H
3334052a	3
1a51e3a0	4	#ifdef CONFIG_X86_64
9939ddaf TH	5	#define __percpu_seg gs
9939ddaf TH	6	#define __percpu_mov_op movq
1a51e3a0	7	#else
9939ddaf TH	8	#define __percpu_seg fs
9939ddaf TH	9	#define __percpu_mov_op movl
96a388de	10	#endif
3334052a	11
	12	#ifdef __ASSEMBLY__
	13
	14	/*
	15	* PER_CPU finds an address of a per-cpu variable.
	16	*
	17	* Args:
	18	* var - variable name
	19	* reg - 32bit register
	20	*
	21	* The resulting address is stored in the "reg" argument.
	22	*
	23	* Example:
	24	* PER_CPU(cpu_gdt_descr, %ebx)
	25	*/
	26	#ifdef CONFIG_SMP
9939ddaf TH	27	#define PER_CPU(var, reg) \
9939ddaf TH	28	__percpu_mov_op %__percpu_seg:per_cpu__this_cpu_off, reg; \
3334052a	29	lea per_cpu__##var(reg), reg
9939ddaf	30	#define PER_CPU_VAR(var) %__percpu_seg:per_cpu__##var
3334052a	31	#else /* ! SMP */
9939ddaf TH	32	#define PER_CPU(var, reg) \
9939ddaf TH	33	__percpu_mov_op $per_cpu__##var, reg
3334052a	34	#define PER_CPU_VAR(var) per_cpu__##var
	35	#endif /* SMP */
	36
2add8e23 BG	37	#ifdef CONFIG_X86_64_SMP
	38	#define INIT_PER_CPU_VAR(var) init_per_cpu__##var
	39	#else
	40	#define INIT_PER_CPU_VAR(var) per_cpu__##var
	41	#endif
	42
3334052a	43	#else /* ...!ASSEMBLY */
3334052a	44
e59a1bb2	45	#include <linux/kernel.h>
9939ddaf	46	#include <linux/stringify.h>
3334052a	47
9939ddaf	48	#ifdef CONFIG_SMP
87b26406	49	#define __percpu_arg(x) "%%"__stringify(__percpu_seg)":%P" #x
6dbde353	50	#define __my_cpu_offset percpu_read(this_cpu_off)
9939ddaf	51	#else
ed8d9adf	52	#define __percpu_arg(x) "%P" #x
9939ddaf	53	#endif
3334052a	54
2add8e23 BG	55	/*
	56	* Initialized pointers to per-cpu variables needed for the boot
	57	* processor need to use these macros to get the proper address
	58	* offset from __per_cpu_load on SMP.
	59	*
	60	* There also must be an entry in vmlinux_64.lds.S
	61	*/
	62	#define DECLARE_INIT_PER_CPU(var) \
	63	extern typeof(per_cpu_var(var)) init_per_cpu_var(var)
	64
	65	#ifdef CONFIG_X86_64_SMP
	66	#define init_per_cpu_var(var) init_per_cpu__##var
	67	#else
	68	#define init_per_cpu_var(var) per_cpu_var(var)
	69	#endif
	70
3334052a	71	/* For arch-specific code, we can use direct single-insn ops (they
	72	* don't give an lvalue though). */
	73	extern void __bad_percpu_size(void);
	74
bc9e3be2 JP	75	#define percpu_to_op(op, var, val) \
bc9e3be2 JP	76	do { \
0f5e4816	77	typedef typeof(var) pto_T__; \
bc9e3be2	78	if (0) { \
0f5e4816 TH	79	pto_T__ pto_tmp__; \
0f5e4816 TH	80	pto_tmp__ = (val); \
bc9e3be2 JP	81	} \
	82	switch (sizeof(var)) { \
	83	case 1: \
87b26406	84	asm(op "b %1,"__percpu_arg(0) \
bc9e3be2	85	: "+m" (var) \
0f5e4816	86	: "qi" ((pto_T__)(val))); \
bc9e3be2 JP	87	break; \
bc9e3be2 JP	88	case 2: \
87b26406	89	asm(op "w %1,"__percpu_arg(0) \
bc9e3be2	90	: "+m" (var) \
0f5e4816	91	: "ri" ((pto_T__)(val))); \
bc9e3be2 JP	92	break; \
bc9e3be2 JP	93	case 4: \
87b26406	94	asm(op "l %1,"__percpu_arg(0) \
bc9e3be2	95	: "+m" (var) \
0f5e4816	96	: "ri" ((pto_T__)(val))); \
bc9e3be2	97	break; \
9939ddaf	98	case 8: \
87b26406	99	asm(op "q %1,"__percpu_arg(0) \
9939ddaf	100	: "+m" (var) \
0f5e4816	101	: "re" ((pto_T__)(val))); \
9939ddaf	102	break; \
bc9e3be2 JP	103	default: __bad_percpu_size(); \
	104	} \
	105	} while (0)
	106
ed8d9adf	107	#define percpu_from_op(op, var, constraint) \
bc9e3be2	108	({ \
0f5e4816	109	typeof(var) pfo_ret__; \
bc9e3be2 JP	110	switch (sizeof(var)) { \
bc9e3be2 JP	111	case 1: \
87b26406	112	asm(op "b "__percpu_arg(1)",%0" \
0f5e4816	113	: "=q" (pfo_ret__) \
ed8d9adf	114	: constraint); \
bc9e3be2 JP	115	break; \
bc9e3be2 JP	116	case 2: \
87b26406	117	asm(op "w "__percpu_arg(1)",%0" \
0f5e4816	118	: "=r" (pfo_ret__) \
ed8d9adf	119	: constraint); \
bc9e3be2 JP	120	break; \
bc9e3be2 JP	121	case 4: \
87b26406	122	asm(op "l "__percpu_arg(1)",%0" \
0f5e4816	123	: "=r" (pfo_ret__) \
ed8d9adf	124	: constraint); \
9939ddaf TH	125	break; \
9939ddaf TH	126	case 8: \
87b26406	127	asm(op "q "__percpu_arg(1)",%0" \
0f5e4816	128	: "=r" (pfo_ret__) \
ed8d9adf	129	: constraint); \
bc9e3be2 JP	130	break; \
	131	default: __bad_percpu_size(); \
	132	} \
0f5e4816	133	pfo_ret__; \
bc9e3be2	134	})
3334052a	135
ed8d9adf LT	136	/*
	137	* percpu_read() makes gcc load the percpu variable every time it is
	138	* accessed while percpu_read_stable() allows the value to be cached.
	139	* percpu_read_stable() is more efficient and can be used if its value
	140	* is guaranteed to be valid across cpus. The current users include
	141	* get_current() and get_thread_info() both of which are actually
	142	* per-thread variables implemented as per-cpu variables and thus
	143	* stable for the duration of the respective task.
	144	*/
	145	#define percpu_read(var) percpu_from_op("mov", per_cpu__##var, \
	146	"m" (per_cpu__##var))
	147	#define percpu_read_stable(var) percpu_from_op("mov", per_cpu__##var, \
	148	"p" (&per_cpu__##var))
6dbde353 IM	149	#define percpu_write(var, val) percpu_to_op("mov", per_cpu__##var, val)
	150	#define percpu_add(var, val) percpu_to_op("add", per_cpu__##var, val)
	151	#define percpu_sub(var, val) percpu_to_op("sub", per_cpu__##var, val)
	152	#define percpu_and(var, val) percpu_to_op("and", per_cpu__##var, val)
	153	#define percpu_or(var, val) percpu_to_op("or", per_cpu__##var, val)
	154	#define percpu_xor(var, val) percpu_to_op("xor", per_cpu__##var, val)
9939ddaf	155
30ed1a79 CL	156	#define __this_cpu_read_1(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
	157	#define __this_cpu_read_2(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
	158	#define __this_cpu_read_4(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
	159
	160	#define __this_cpu_write_1(pcp, val) percpu_to_op("mov", (pcp), val)
	161	#define __this_cpu_write_2(pcp, val) percpu_to_op("mov", (pcp), val)
	162	#define __this_cpu_write_4(pcp, val) percpu_to_op("mov", (pcp), val)
	163	#define __this_cpu_add_1(pcp, val) percpu_to_op("add", (pcp), val)
	164	#define __this_cpu_add_2(pcp, val) percpu_to_op("add", (pcp), val)
	165	#define __this_cpu_add_4(pcp, val) percpu_to_op("add", (pcp), val)
	166	#define __this_cpu_and_1(pcp, val) percpu_to_op("and", (pcp), val)
	167	#define __this_cpu_and_2(pcp, val) percpu_to_op("and", (pcp), val)
	168	#define __this_cpu_and_4(pcp, val) percpu_to_op("and", (pcp), val)
	169	#define __this_cpu_or_1(pcp, val) percpu_to_op("or", (pcp), val)
	170	#define __this_cpu_or_2(pcp, val) percpu_to_op("or", (pcp), val)
	171	#define __this_cpu_or_4(pcp, val) percpu_to_op("or", (pcp), val)
	172	#define __this_cpu_xor_1(pcp, val) percpu_to_op("xor", (pcp), val)
	173	#define __this_cpu_xor_2(pcp, val) percpu_to_op("xor", (pcp), val)
	174	#define __this_cpu_xor_4(pcp, val) percpu_to_op("xor", (pcp), val)
	175
	176	#define this_cpu_read_1(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
	177	#define this_cpu_read_2(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
	178	#define this_cpu_read_4(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
	179	#define this_cpu_write_1(pcp, val) percpu_to_op("mov", (pcp), val)
	180	#define this_cpu_write_2(pcp, val) percpu_to_op("mov", (pcp), val)
	181	#define this_cpu_write_4(pcp, val) percpu_to_op("mov", (pcp), val)
	182	#define this_cpu_add_1(pcp, val) percpu_to_op("add", (pcp), val)
	183	#define this_cpu_add_2(pcp, val) percpu_to_op("add", (pcp), val)
	184	#define this_cpu_add_4(pcp, val) percpu_to_op("add", (pcp), val)
	185	#define this_cpu_and_1(pcp, val) percpu_to_op("and", (pcp), val)
	186	#define this_cpu_and_2(pcp, val) percpu_to_op("and", (pcp), val)
	187	#define this_cpu_and_4(pcp, val) percpu_to_op("and", (pcp), val)
	188	#define this_cpu_or_1(pcp, val) percpu_to_op("or", (pcp), val)
	189	#define this_cpu_or_2(pcp, val) percpu_to_op("or", (pcp), val)
	190	#define this_cpu_or_4(pcp, val) percpu_to_op("or", (pcp), val)
	191	#define this_cpu_xor_1(pcp, val) percpu_to_op("xor", (pcp), val)
	192	#define this_cpu_xor_2(pcp, val) percpu_to_op("xor", (pcp), val)
	193	#define this_cpu_xor_4(pcp, val) percpu_to_op("xor", (pcp), val)
	194
	195	#define irqsafe_cpu_add_1(pcp, val) percpu_to_op("add", (pcp), val)
	196	#define irqsafe_cpu_add_2(pcp, val) percpu_to_op("add", (pcp), val)
	197	#define irqsafe_cpu_add_4(pcp, val) percpu_to_op("add", (pcp), val)
	198	#define irqsafe_cpu_and_1(pcp, val) percpu_to_op("and", (pcp), val)
	199	#define irqsafe_cpu_and_2(pcp, val) percpu_to_op("and", (pcp), val)
	200	#define irqsafe_cpu_and_4(pcp, val) percpu_to_op("and", (pcp), val)
	201	#define irqsafe_cpu_or_1(pcp, val) percpu_to_op("or", (pcp), val)
	202	#define irqsafe_cpu_or_2(pcp, val) percpu_to_op("or", (pcp), val)
	203	#define irqsafe_cpu_or_4(pcp, val) percpu_to_op("or", (pcp), val)
	204	#define irqsafe_cpu_xor_1(pcp, val) percpu_to_op("xor", (pcp), val)
	205	#define irqsafe_cpu_xor_2(pcp, val) percpu_to_op("xor", (pcp), val)
	206	#define irqsafe_cpu_xor_4(pcp, val) percpu_to_op("xor", (pcp), val)
	207
	208	/*
	209	* Per cpu atomic 64 bit operations are only available under 64 bit.
	210	* 32 bit must fall back to generic operations.
	211	*/
	212	#ifdef CONFIG_X86_64
	213	#define __this_cpu_read_8(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
	214	#define __this_cpu_write_8(pcp, val) percpu_to_op("mov", (pcp), val)
	215	#define __this_cpu_add_8(pcp, val) percpu_to_op("add", (pcp), val)
	216	#define __this_cpu_and_8(pcp, val) percpu_to_op("and", (pcp), val)
	217	#define __this_cpu_or_8(pcp, val) percpu_to_op("or", (pcp), val)
	218	#define __this_cpu_xor_8(pcp, val) percpu_to_op("xor", (pcp), val)
	219
220	#define this_cpu_read_8(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
221	#define this_cpu_write_8(pcp, val) percpu_to_op("mov", (pcp), val)
222	#define this_cpu_add_8(pcp, val) percpu_to_op("add", (pcp), val)
223	#define this_cpu_and_8(pcp, val) percpu_to_op("and", (pcp), val)
224	#define this_cpu_or_8(pcp, val) percpu_to_op("or", (pcp), val)
225	#define this_cpu_xor_8(pcp, val) percpu_to_op("xor", (pcp), val)
226
227	#define irqsafe_cpu_add_8(pcp, val) percpu_to_op("add", (pcp), val)
228	#define irqsafe_cpu_and_8(pcp, val) percpu_to_op("and", (pcp), val)
229	#define irqsafe_cpu_or_8(pcp, val) percpu_to_op("or", (pcp), val)
230	#define irqsafe_cpu_xor_8(pcp, val) percpu_to_op("xor", (pcp), val)
231
232	#endif
233
49357d19 TH	234	/* This is not atomic against other CPUs -- CPU preemption needs to be off */
	235	#define x86_test_and_clear_bit_percpu(bit, var) \
	236	({ \
	237	int old__; \
87b26406 BG	238	asm volatile("btr %2,"__percpu_arg(1)"\n\tsbbl %0,%0" \
	239	: "=r" (old__), "+m" (per_cpu__##var) \
	240	: "dIr" (bit)); \
49357d19 TH	241	old__; \
	242	})
	243
6dbde353 IM	244	#include <asm-generic/percpu.h>
	245
	246	/* We can use this directly for local CPU (faster). */
	247	DECLARE_PER_CPU(unsigned long, this_cpu_off);
	248
3334052a	249	#endif /* !__ASSEMBLY__ */
23ca4bba MT	250
	251	#ifdef CONFIG_SMP
	252
	253	/*
	254	* Define the "EARLY_PER_CPU" macros. These are used for some per_cpu
	255	* variables that are initialized and accessed before there are per_cpu
	256	* areas allocated.
	257	*/
	258
	259	#define DEFINE_EARLY_PER_CPU(_type, _name, _initvalue) \
	260	DEFINE_PER_CPU(_type, _name) = _initvalue; \
	261	__typeof__(_type) _name##_early_map[NR_CPUS] __initdata = \
	262	{ [0 ... NR_CPUS-1] = _initvalue }; \
c6a92a25	263	__typeof__(_type) *_name##_early_ptr __refdata = _name##_early_map
23ca4bba MT	264
	265	#define EXPORT_EARLY_PER_CPU_SYMBOL(_name) \
	266	EXPORT_PER_CPU_SYMBOL(_name)
	267
	268	#define DECLARE_EARLY_PER_CPU(_type, _name) \
	269	DECLARE_PER_CPU(_type, _name); \
	270	extern __typeof__(_type) *_name##_early_ptr; \
	271	extern __typeof__(_type) _name##_early_map[]
	272
	273	#define early_per_cpu_ptr(_name) (_name##_early_ptr)
	274	#define early_per_cpu_map(_name, _idx) (_name##_early_map[_idx])
	275	#define early_per_cpu(_name, _cpu) \
f10fcd47 TH	276	*(early_per_cpu_ptr(_name) ? \
	277	&early_per_cpu_ptr(_name)[_cpu] : \
	278	&per_cpu(_name, _cpu))
23ca4bba MT	279
	280	#else /* !CONFIG_SMP */
	281	#define DEFINE_EARLY_PER_CPU(_type, _name, _initvalue) \
	282	DEFINE_PER_CPU(_type, _name) = _initvalue
	283
	284	#define EXPORT_EARLY_PER_CPU_SYMBOL(_name) \
	285	EXPORT_PER_CPU_SYMBOL(_name)
	286
	287	#define DECLARE_EARLY_PER_CPU(_type, _name) \
	288	DECLARE_PER_CPU(_type, _name)
	289
	290	#define early_per_cpu(_name, _cpu) per_cpu(_name, _cpu)
	291	#define early_per_cpu_ptr(_name) NULL
	292	/* no early_per_cpu_map() */
	293
	294	#endif /* !CONFIG_SMP */
	295
1965aae3	296	#endif /* _ASM_X86_PERCPU_H */