mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-22 00:40:03 +00:00
![Alexander Pateenok](/assets/img/avatar_default.png)
The macro is not used:
$ grep -r PER_CPU_DEF_ATTRIBUTES
include/linux/percpu-defs.h: __PCPU_ATTRS(sec) PER_CPU_DEF_ATTRIBUTES __weak \
include/linux/percpu-defs.h: __PCPU_ATTRS(sec) PER_CPU_DEF_ATTRIBUTES \
include/asm-generic/percpu.h:#ifndef PER_CPU_DEF_ATTRIBUTES
include/asm-generic/percpu.h:#define PER_CPU_DEF_ATTRIBUTES
It was added with b01e8dc343
("alpha: fix percpu build breakage") and
removed in 2009 with b01e8dc34379..6088464cf1ae.
Link: http://lkml.kernel.org/r/20180821164904.qqhcduimjznods66@K55DR.localdomain
Signed-off-by: Alexander Pateenok <pateenoc@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
444 lines
13 KiB
C
444 lines
13 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _ASM_GENERIC_PERCPU_H_
|
|
#define _ASM_GENERIC_PERCPU_H_
|
|
|
|
#include <linux/compiler.h>
|
|
#include <linux/threads.h>
|
|
#include <linux/percpu-defs.h>
|
|
|
|
#ifdef CONFIG_SMP
|
|
|
|
/*
|
|
* per_cpu_offset() is the offset that has to be added to a
|
|
* percpu variable to get to the instance for a certain processor.
|
|
*
|
|
* Most arches use the __per_cpu_offset array for those offsets but
|
|
* some arches have their own ways of determining the offset (x86_64, s390).
|
|
*/
|
|
#ifndef __per_cpu_offset
|
|
extern unsigned long __per_cpu_offset[NR_CPUS];
|
|
|
|
#define per_cpu_offset(x) (__per_cpu_offset[x])
|
|
#endif
|
|
|
|
/*
|
|
* Determine the offset for the currently active processor.
|
|
* An arch may define __my_cpu_offset to provide a more effective
|
|
* means of obtaining the offset to the per cpu variables of the
|
|
* current processor.
|
|
*/
|
|
#ifndef __my_cpu_offset
|
|
#define __my_cpu_offset per_cpu_offset(raw_smp_processor_id())
|
|
#endif
|
|
#ifdef CONFIG_DEBUG_PREEMPT
|
|
#define my_cpu_offset per_cpu_offset(smp_processor_id())
|
|
#else
|
|
#define my_cpu_offset __my_cpu_offset
|
|
#endif
|
|
|
|
/*
|
|
* Arch may define arch_raw_cpu_ptr() to provide more efficient address
|
|
* translations for raw_cpu_ptr().
|
|
*/
|
|
#ifndef arch_raw_cpu_ptr
|
|
#define arch_raw_cpu_ptr(ptr) SHIFT_PERCPU_PTR(ptr, __my_cpu_offset)
|
|
#endif
|
|
|
|
#ifdef CONFIG_HAVE_SETUP_PER_CPU_AREA
|
|
extern void setup_per_cpu_areas(void);
|
|
#endif
|
|
|
|
#endif /* SMP */
|
|
|
|
#ifndef PER_CPU_BASE_SECTION
|
|
#ifdef CONFIG_SMP
|
|
#define PER_CPU_BASE_SECTION ".data..percpu"
|
|
#else
|
|
#define PER_CPU_BASE_SECTION ".data"
|
|
#endif
|
|
#endif
|
|
|
|
#ifndef PER_CPU_ATTRIBUTES
|
|
#define PER_CPU_ATTRIBUTES
|
|
#endif
|
|
|
|
#define raw_cpu_generic_read(pcp) \
|
|
({ \
|
|
*raw_cpu_ptr(&(pcp)); \
|
|
})
|
|
|
|
#define raw_cpu_generic_to_op(pcp, val, op) \
|
|
do { \
|
|
*raw_cpu_ptr(&(pcp)) op val; \
|
|
} while (0)
|
|
|
|
#define raw_cpu_generic_add_return(pcp, val) \
|
|
({ \
|
|
typeof(&(pcp)) __p = raw_cpu_ptr(&(pcp)); \
|
|
\
|
|
*__p += val; \
|
|
*__p; \
|
|
})
|
|
|
|
#define raw_cpu_generic_xchg(pcp, nval) \
|
|
({ \
|
|
typeof(&(pcp)) __p = raw_cpu_ptr(&(pcp)); \
|
|
typeof(pcp) __ret; \
|
|
__ret = *__p; \
|
|
*__p = nval; \
|
|
__ret; \
|
|
})
|
|
|
|
#define raw_cpu_generic_cmpxchg(pcp, oval, nval) \
|
|
({ \
|
|
typeof(&(pcp)) __p = raw_cpu_ptr(&(pcp)); \
|
|
typeof(pcp) __ret; \
|
|
__ret = *__p; \
|
|
if (__ret == (oval)) \
|
|
*__p = nval; \
|
|
__ret; \
|
|
})
|
|
|
|
#define raw_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) \
|
|
({ \
|
|
typeof(&(pcp1)) __p1 = raw_cpu_ptr(&(pcp1)); \
|
|
typeof(&(pcp2)) __p2 = raw_cpu_ptr(&(pcp2)); \
|
|
int __ret = 0; \
|
|
if (*__p1 == (oval1) && *__p2 == (oval2)) { \
|
|
*__p1 = nval1; \
|
|
*__p2 = nval2; \
|
|
__ret = 1; \
|
|
} \
|
|
(__ret); \
|
|
})
|
|
|
|
#define __this_cpu_generic_read_nopreempt(pcp) \
|
|
({ \
|
|
typeof(pcp) __ret; \
|
|
preempt_disable_notrace(); \
|
|
__ret = READ_ONCE(*raw_cpu_ptr(&(pcp))); \
|
|
preempt_enable_notrace(); \
|
|
__ret; \
|
|
})
|
|
|
|
#define __this_cpu_generic_read_noirq(pcp) \
|
|
({ \
|
|
typeof(pcp) __ret; \
|
|
unsigned long __flags; \
|
|
raw_local_irq_save(__flags); \
|
|
__ret = raw_cpu_generic_read(pcp); \
|
|
raw_local_irq_restore(__flags); \
|
|
__ret; \
|
|
})
|
|
|
|
#define this_cpu_generic_read(pcp) \
|
|
({ \
|
|
typeof(pcp) __ret; \
|
|
if (__native_word(pcp)) \
|
|
__ret = __this_cpu_generic_read_nopreempt(pcp); \
|
|
else \
|
|
__ret = __this_cpu_generic_read_noirq(pcp); \
|
|
__ret; \
|
|
})
|
|
|
|
#define this_cpu_generic_to_op(pcp, val, op) \
|
|
do { \
|
|
unsigned long __flags; \
|
|
raw_local_irq_save(__flags); \
|
|
raw_cpu_generic_to_op(pcp, val, op); \
|
|
raw_local_irq_restore(__flags); \
|
|
} while (0)
|
|
|
|
|
|
#define this_cpu_generic_add_return(pcp, val) \
|
|
({ \
|
|
typeof(pcp) __ret; \
|
|
unsigned long __flags; \
|
|
raw_local_irq_save(__flags); \
|
|
__ret = raw_cpu_generic_add_return(pcp, val); \
|
|
raw_local_irq_restore(__flags); \
|
|
__ret; \
|
|
})
|
|
|
|
#define this_cpu_generic_xchg(pcp, nval) \
|
|
({ \
|
|
typeof(pcp) __ret; \
|
|
unsigned long __flags; \
|
|
raw_local_irq_save(__flags); \
|
|
__ret = raw_cpu_generic_xchg(pcp, nval); \
|
|
raw_local_irq_restore(__flags); \
|
|
__ret; \
|
|
})
|
|
|
|
#define this_cpu_generic_cmpxchg(pcp, oval, nval) \
|
|
({ \
|
|
typeof(pcp) __ret; \
|
|
unsigned long __flags; \
|
|
raw_local_irq_save(__flags); \
|
|
__ret = raw_cpu_generic_cmpxchg(pcp, oval, nval); \
|
|
raw_local_irq_restore(__flags); \
|
|
__ret; \
|
|
})
|
|
|
|
#define this_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) \
|
|
({ \
|
|
int __ret; \
|
|
unsigned long __flags; \
|
|
raw_local_irq_save(__flags); \
|
|
__ret = raw_cpu_generic_cmpxchg_double(pcp1, pcp2, \
|
|
oval1, oval2, nval1, nval2); \
|
|
raw_local_irq_restore(__flags); \
|
|
__ret; \
|
|
})
|
|
|
|
#ifndef raw_cpu_read_1
|
|
#define raw_cpu_read_1(pcp) raw_cpu_generic_read(pcp)
|
|
#endif
|
|
#ifndef raw_cpu_read_2
|
|
#define raw_cpu_read_2(pcp) raw_cpu_generic_read(pcp)
|
|
#endif
|
|
#ifndef raw_cpu_read_4
|
|
#define raw_cpu_read_4(pcp) raw_cpu_generic_read(pcp)
|
|
#endif
|
|
#ifndef raw_cpu_read_8
|
|
#define raw_cpu_read_8(pcp) raw_cpu_generic_read(pcp)
|
|
#endif
|
|
|
|
#ifndef raw_cpu_write_1
|
|
#define raw_cpu_write_1(pcp, val) raw_cpu_generic_to_op(pcp, val, =)
|
|
#endif
|
|
#ifndef raw_cpu_write_2
|
|
#define raw_cpu_write_2(pcp, val) raw_cpu_generic_to_op(pcp, val, =)
|
|
#endif
|
|
#ifndef raw_cpu_write_4
|
|
#define raw_cpu_write_4(pcp, val) raw_cpu_generic_to_op(pcp, val, =)
|
|
#endif
|
|
#ifndef raw_cpu_write_8
|
|
#define raw_cpu_write_8(pcp, val) raw_cpu_generic_to_op(pcp, val, =)
|
|
#endif
|
|
|
|
#ifndef raw_cpu_add_1
|
|
#define raw_cpu_add_1(pcp, val) raw_cpu_generic_to_op(pcp, val, +=)
|
|
#endif
|
|
#ifndef raw_cpu_add_2
|
|
#define raw_cpu_add_2(pcp, val) raw_cpu_generic_to_op(pcp, val, +=)
|
|
#endif
|
|
#ifndef raw_cpu_add_4
|
|
#define raw_cpu_add_4(pcp, val) raw_cpu_generic_to_op(pcp, val, +=)
|
|
#endif
|
|
#ifndef raw_cpu_add_8
|
|
#define raw_cpu_add_8(pcp, val) raw_cpu_generic_to_op(pcp, val, +=)
|
|
#endif
|
|
|
|
#ifndef raw_cpu_and_1
|
|
#define raw_cpu_and_1(pcp, val) raw_cpu_generic_to_op(pcp, val, &=)
|
|
#endif
|
|
#ifndef raw_cpu_and_2
|
|
#define raw_cpu_and_2(pcp, val) raw_cpu_generic_to_op(pcp, val, &=)
|
|
#endif
|
|
#ifndef raw_cpu_and_4
|
|
#define raw_cpu_and_4(pcp, val) raw_cpu_generic_to_op(pcp, val, &=)
|
|
#endif
|
|
#ifndef raw_cpu_and_8
|
|
#define raw_cpu_and_8(pcp, val) raw_cpu_generic_to_op(pcp, val, &=)
|
|
#endif
|
|
|
|
#ifndef raw_cpu_or_1
|
|
#define raw_cpu_or_1(pcp, val) raw_cpu_generic_to_op(pcp, val, |=)
|
|
#endif
|
|
#ifndef raw_cpu_or_2
|
|
#define raw_cpu_or_2(pcp, val) raw_cpu_generic_to_op(pcp, val, |=)
|
|
#endif
|
|
#ifndef raw_cpu_or_4
|
|
#define raw_cpu_or_4(pcp, val) raw_cpu_generic_to_op(pcp, val, |=)
|
|
#endif
|
|
#ifndef raw_cpu_or_8
|
|
#define raw_cpu_or_8(pcp, val) raw_cpu_generic_to_op(pcp, val, |=)
|
|
#endif
|
|
|
|
#ifndef raw_cpu_add_return_1
|
|
#define raw_cpu_add_return_1(pcp, val) raw_cpu_generic_add_return(pcp, val)
|
|
#endif
|
|
#ifndef raw_cpu_add_return_2
|
|
#define raw_cpu_add_return_2(pcp, val) raw_cpu_generic_add_return(pcp, val)
|
|
#endif
|
|
#ifndef raw_cpu_add_return_4
|
|
#define raw_cpu_add_return_4(pcp, val) raw_cpu_generic_add_return(pcp, val)
|
|
#endif
|
|
#ifndef raw_cpu_add_return_8
|
|
#define raw_cpu_add_return_8(pcp, val) raw_cpu_generic_add_return(pcp, val)
|
|
#endif
|
|
|
|
#ifndef raw_cpu_xchg_1
|
|
#define raw_cpu_xchg_1(pcp, nval) raw_cpu_generic_xchg(pcp, nval)
|
|
#endif
|
|
#ifndef raw_cpu_xchg_2
|
|
#define raw_cpu_xchg_2(pcp, nval) raw_cpu_generic_xchg(pcp, nval)
|
|
#endif
|
|
#ifndef raw_cpu_xchg_4
|
|
#define raw_cpu_xchg_4(pcp, nval) raw_cpu_generic_xchg(pcp, nval)
|
|
#endif
|
|
#ifndef raw_cpu_xchg_8
|
|
#define raw_cpu_xchg_8(pcp, nval) raw_cpu_generic_xchg(pcp, nval)
|
|
#endif
|
|
|
|
#ifndef raw_cpu_cmpxchg_1
|
|
#define raw_cpu_cmpxchg_1(pcp, oval, nval) \
|
|
raw_cpu_generic_cmpxchg(pcp, oval, nval)
|
|
#endif
|
|
#ifndef raw_cpu_cmpxchg_2
|
|
#define raw_cpu_cmpxchg_2(pcp, oval, nval) \
|
|
raw_cpu_generic_cmpxchg(pcp, oval, nval)
|
|
#endif
|
|
#ifndef raw_cpu_cmpxchg_4
|
|
#define raw_cpu_cmpxchg_4(pcp, oval, nval) \
|
|
raw_cpu_generic_cmpxchg(pcp, oval, nval)
|
|
#endif
|
|
#ifndef raw_cpu_cmpxchg_8
|
|
#define raw_cpu_cmpxchg_8(pcp, oval, nval) \
|
|
raw_cpu_generic_cmpxchg(pcp, oval, nval)
|
|
#endif
|
|
|
|
#ifndef raw_cpu_cmpxchg_double_1
|
|
#define raw_cpu_cmpxchg_double_1(pcp1, pcp2, oval1, oval2, nval1, nval2) \
|
|
raw_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2)
|
|
#endif
|
|
#ifndef raw_cpu_cmpxchg_double_2
|
|
#define raw_cpu_cmpxchg_double_2(pcp1, pcp2, oval1, oval2, nval1, nval2) \
|
|
raw_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2)
|
|
#endif
|
|
#ifndef raw_cpu_cmpxchg_double_4
|
|
#define raw_cpu_cmpxchg_double_4(pcp1, pcp2, oval1, oval2, nval1, nval2) \
|
|
raw_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2)
|
|
#endif
|
|
#ifndef raw_cpu_cmpxchg_double_8
|
|
#define raw_cpu_cmpxchg_double_8(pcp1, pcp2, oval1, oval2, nval1, nval2) \
|
|
raw_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2)
|
|
#endif
|
|
|
|
#ifndef this_cpu_read_1
|
|
#define this_cpu_read_1(pcp) this_cpu_generic_read(pcp)
|
|
#endif
|
|
#ifndef this_cpu_read_2
|
|
#define this_cpu_read_2(pcp) this_cpu_generic_read(pcp)
|
|
#endif
|
|
#ifndef this_cpu_read_4
|
|
#define this_cpu_read_4(pcp) this_cpu_generic_read(pcp)
|
|
#endif
|
|
#ifndef this_cpu_read_8
|
|
#define this_cpu_read_8(pcp) this_cpu_generic_read(pcp)
|
|
#endif
|
|
|
|
#ifndef this_cpu_write_1
|
|
#define this_cpu_write_1(pcp, val) this_cpu_generic_to_op(pcp, val, =)
|
|
#endif
|
|
#ifndef this_cpu_write_2
|
|
#define this_cpu_write_2(pcp, val) this_cpu_generic_to_op(pcp, val, =)
|
|
#endif
|
|
#ifndef this_cpu_write_4
|
|
#define this_cpu_write_4(pcp, val) this_cpu_generic_to_op(pcp, val, =)
|
|
#endif
|
|
#ifndef this_cpu_write_8
|
|
#define this_cpu_write_8(pcp, val) this_cpu_generic_to_op(pcp, val, =)
|
|
#endif
|
|
|
|
#ifndef this_cpu_add_1
|
|
#define this_cpu_add_1(pcp, val) this_cpu_generic_to_op(pcp, val, +=)
|
|
#endif
|
|
#ifndef this_cpu_add_2
|
|
#define this_cpu_add_2(pcp, val) this_cpu_generic_to_op(pcp, val, +=)
|
|
#endif
|
|
#ifndef this_cpu_add_4
|
|
#define this_cpu_add_4(pcp, val) this_cpu_generic_to_op(pcp, val, +=)
|
|
#endif
|
|
#ifndef this_cpu_add_8
|
|
#define this_cpu_add_8(pcp, val) this_cpu_generic_to_op(pcp, val, +=)
|
|
#endif
|
|
|
|
#ifndef this_cpu_and_1
|
|
#define this_cpu_and_1(pcp, val) this_cpu_generic_to_op(pcp, val, &=)
|
|
#endif
|
|
#ifndef this_cpu_and_2
|
|
#define this_cpu_and_2(pcp, val) this_cpu_generic_to_op(pcp, val, &=)
|
|
#endif
|
|
#ifndef this_cpu_and_4
|
|
#define this_cpu_and_4(pcp, val) this_cpu_generic_to_op(pcp, val, &=)
|
|
#endif
|
|
#ifndef this_cpu_and_8
|
|
#define this_cpu_and_8(pcp, val) this_cpu_generic_to_op(pcp, val, &=)
|
|
#endif
|
|
|
|
#ifndef this_cpu_or_1
|
|
#define this_cpu_or_1(pcp, val) this_cpu_generic_to_op(pcp, val, |=)
|
|
#endif
|
|
#ifndef this_cpu_or_2
|
|
#define this_cpu_or_2(pcp, val) this_cpu_generic_to_op(pcp, val, |=)
|
|
#endif
|
|
#ifndef this_cpu_or_4
|
|
#define this_cpu_or_4(pcp, val) this_cpu_generic_to_op(pcp, val, |=)
|
|
#endif
|
|
#ifndef this_cpu_or_8
|
|
#define this_cpu_or_8(pcp, val) this_cpu_generic_to_op(pcp, val, |=)
|
|
#endif
|
|
|
|
#ifndef this_cpu_add_return_1
|
|
#define this_cpu_add_return_1(pcp, val) this_cpu_generic_add_return(pcp, val)
|
|
#endif
|
|
#ifndef this_cpu_add_return_2
|
|
#define this_cpu_add_return_2(pcp, val) this_cpu_generic_add_return(pcp, val)
|
|
#endif
|
|
#ifndef this_cpu_add_return_4
|
|
#define this_cpu_add_return_4(pcp, val) this_cpu_generic_add_return(pcp, val)
|
|
#endif
|
|
#ifndef this_cpu_add_return_8
|
|
#define this_cpu_add_return_8(pcp, val) this_cpu_generic_add_return(pcp, val)
|
|
#endif
|
|
|
|
#ifndef this_cpu_xchg_1
|
|
#define this_cpu_xchg_1(pcp, nval) this_cpu_generic_xchg(pcp, nval)
|
|
#endif
|
|
#ifndef this_cpu_xchg_2
|
|
#define this_cpu_xchg_2(pcp, nval) this_cpu_generic_xchg(pcp, nval)
|
|
#endif
|
|
#ifndef this_cpu_xchg_4
|
|
#define this_cpu_xchg_4(pcp, nval) this_cpu_generic_xchg(pcp, nval)
|
|
#endif
|
|
#ifndef this_cpu_xchg_8
|
|
#define this_cpu_xchg_8(pcp, nval) this_cpu_generic_xchg(pcp, nval)
|
|
#endif
|
|
|
|
#ifndef this_cpu_cmpxchg_1
|
|
#define this_cpu_cmpxchg_1(pcp, oval, nval) \
|
|
this_cpu_generic_cmpxchg(pcp, oval, nval)
|
|
#endif
|
|
#ifndef this_cpu_cmpxchg_2
|
|
#define this_cpu_cmpxchg_2(pcp, oval, nval) \
|
|
this_cpu_generic_cmpxchg(pcp, oval, nval)
|
|
#endif
|
|
#ifndef this_cpu_cmpxchg_4
|
|
#define this_cpu_cmpxchg_4(pcp, oval, nval) \
|
|
this_cpu_generic_cmpxchg(pcp, oval, nval)
|
|
#endif
|
|
#ifndef this_cpu_cmpxchg_8
|
|
#define this_cpu_cmpxchg_8(pcp, oval, nval) \
|
|
this_cpu_generic_cmpxchg(pcp, oval, nval)
|
|
#endif
|
|
|
|
#ifndef this_cpu_cmpxchg_double_1
|
|
#define this_cpu_cmpxchg_double_1(pcp1, pcp2, oval1, oval2, nval1, nval2) \
|
|
this_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2)
|
|
#endif
|
|
#ifndef this_cpu_cmpxchg_double_2
|
|
#define this_cpu_cmpxchg_double_2(pcp1, pcp2, oval1, oval2, nval1, nval2) \
|
|
this_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2)
|
|
#endif
|
|
#ifndef this_cpu_cmpxchg_double_4
|
|
#define this_cpu_cmpxchg_double_4(pcp1, pcp2, oval1, oval2, nval1, nval2) \
|
|
this_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2)
|
|
#endif
|
|
#ifndef this_cpu_cmpxchg_double_8
|
|
#define this_cpu_cmpxchg_double_8(pcp1, pcp2, oval1, oval2, nval1, nval2) \
|
|
this_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2)
|
|
#endif
|
|
|
|
#endif /* _ASM_GENERIC_PERCPU_H_ */
|