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percpu: add __percpu for sparse.

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We have to make __kernel "__attribute__((address_space(0)))" so we can
cast to it.

tj: * put_cpu_var() update.

    * Annotations added to dynamic allocator interface.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Rusty Russell
2009-10-29 22:34:15 +09:00
committed by Tejun Heo
parent f7b64fe806
commit e0fdb0e050
4 changed files with 18 additions and 10 deletions
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4
include/asm-generic/percpu.h
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@@ -41,7 +41,9 @@ extern unsigned long __per_cpu_offset[NR_CPUS];
* Only S390 provides its own means of moving the pointer.
*/
#ifndef SHIFT_PERCPU_PTR
#define SHIFT_PERCPU_PTR(__p, __offset) RELOC_HIDE((__p), (__offset))
/* Weird cast keeps both GCC and sparse happy. */
#define SHIFT_PERCPU_PTR(__p, __offset) \
RELOC_HIDE((typeof(*(__p)) __kernel __force *)(__p), (__offset))
#endif
/*