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percpu: add __percpu for sparse

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This is to make the annotation of percpu variables during the next merge
window less painfull.

Extracted from a patch by Rusty Russell.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Stephen Rothwell
2010-02-05 16:09:11 +11:00
committed by Linus Torvalds
parent cbee4751f6
commit 2938429501
1 changed files with 2 additions and 0 deletions
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2
include/linux/compiler.h
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@@ -15,6 +15,7 @@
# define __acquire(x) __context__(x,1) # define __acquire(x) __context__(x,1)
# define __release(x) __context__(x,-1) # define __release(x) __context__(x,-1)
# define __cond_lock(x,c) ((c) ? ({ __acquire(x); 1; }) : 0) # define __cond_lock(x,c) ((c) ? ({ __acquire(x); 1; }) : 0)
# define __percpu __attribute__((noderef, address_space(3)))
extern void __chk_user_ptr(const volatile void __user *); extern void __chk_user_ptr(const volatile void __user *);
extern void __chk_io_ptr(const volatile void __iomem *); extern void __chk_io_ptr(const volatile void __iomem *);
#else #else
@@ -32,6 +33,7 @@ extern void __chk_io_ptr(const volatile void __iomem *);
# define __acquire(x) (void)0 # define __acquire(x) (void)0
# define __release(x) (void)0 # define __release(x) (void)0
# define __cond_lock(x,c) (c) # define __cond_lock(x,c) (c)
# define __percpu
#endif #endif
#ifdef __KERNEL__ #ifdef __KERNEL__