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percpu,x86: relocate this_cpu_add_return() and friends

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- include/linux/percpu.h: this_cpu_add_return() and friends were
  located next to __this_cpu_add_return().  However, the overall
  organization is to first group by preemption safeness.  Relocate
  this_cpu_add_return() and friends to preemption-safe area.

- arch/x86/include/asm/percpu.h: Relocate percpu_add_return_op() after
  other more basic operations.  Relocate [__]this_cpu_add_return_8()
  so that they're first grouped by preemption safeness.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
This commit is contained in:
Tejun Heo
2010-12-17 15:47:04 +01:00
parent 8f1d97c79e
commit 403047754c
2 changed files with 65 additions and 66 deletions
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60
include/linux/percpu.h
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@ -417,6 +417,36 @@ do { \
# define this_cpu_xor(pcp, val) __pcpu_size_call(this_cpu_or_, (pcp), (val))
#endif
#define _this_cpu_generic_add_return(pcp, val) \
({ \
typeof(pcp) ret__; \
preempt_disable(); \
__this_cpu_add(pcp, val); \
ret__ = __this_cpu_read(pcp); \
preempt_enable(); \
ret__; \
})
#ifndef this_cpu_add_return
# 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
# define this_cpu_add_return(pcp, val) __pcpu_size_call_return2(this_cpu_add_return_, pcp, val)
#endif
#define this_cpu_sub_return(pcp, val) this_cpu_add_return(pcp, -(val))
#define this_cpu_inc_return(pcp) this_cpu_add_return(pcp, 1)
#define this_cpu_dec_return(pcp) this_cpu_add_return(pcp, -1)
/*
* Generic percpu operations that do not require preemption handling.
* Either we do not care about races or the caller has the
@ -544,36 +574,6 @@ do { \
# define __this_cpu_xor(pcp, val) __pcpu_size_call(__this_cpu_xor_, (pcp), (val))
#endif
#define _this_cpu_generic_add_return(pcp, val) \
({ \
typeof(pcp) ret__; \
preempt_disable(); \
__this_cpu_add(pcp, val); \
ret__ = __this_cpu_read(pcp); \
preempt_enable(); \
ret__; \
})
#ifndef this_cpu_add_return
# 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
# define this_cpu_add_return(pcp, val) __pcpu_size_call_return2(this_cpu_add_return_, pcp, val)
#endif
#define this_cpu_sub_return(pcp, val) this_cpu_add_return(pcp, -(val))
#define this_cpu_inc_return(pcp) this_cpu_add_return(pcp, 1)
#define this_cpu_dec_return(pcp) this_cpu_add_return(pcp, -1)
#define __this_cpu_generic_add_return(pcp, val) \
({ \
__this_cpu_add(pcp, val); \