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percpu: handle __percpu notations in UP accessors

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UP accessors didn't take care of __percpu notations leading to a lot
of spurious sparse warnings on UP configurations.  Fix it.

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Namhyung Kim 2010-08-07 03:26:23 +09:00 committed by Tejun Heo
parent 4a386c3e17
commit 18cb2aef91
2 changed files with 11 additions and 6 deletions
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15
include/asm-generic/percpu.h
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@ -70,11 +70,16 @@ extern void setup_per_cpu_areas(void);
#else /* ! SMP */
#define per_cpu(var, cpu) (*((void)(cpu), &(var)))
#define __get_cpu_var(var) (var)
#define __raw_get_cpu_var(var) (var)
#define this_cpu_ptr(ptr) per_cpu_ptr(ptr, 0)
#define __this_cpu_ptr(ptr) this_cpu_ptr(ptr)
#define VERIFY_PERCPU_PTR(__p) ({ \
__verify_pcpu_ptr((__p)); \
(typeof(*(__p)) __kernel __force *)(__p); \
})
#define per_cpu(var, cpu) (*((void)(cpu), VERIFY_PERCPU_PTR(&(var))))
#define __get_cpu_var(var) (*VERIFY_PERCPU_PTR(&(var)))
#define __raw_get_cpu_var(var) (*VERIFY_PERCPU_PTR(&(var)))
#define this_cpu_ptr(ptr) per_cpu_ptr(ptr, 0)
#define __this_cpu_ptr(ptr) this_cpu_ptr(ptr)
#endif /* SMP */

2
include/linux/percpu.h
View file

@ -149,7 +149,7 @@ extern void __init percpu_init_late(void);
#else /* CONFIG_SMP */
#define per_cpu_ptr(ptr, cpu) ({ (void)(cpu); (ptr); })
#define per_cpu_ptr(ptr, cpu) ({ (void)(cpu); VERIFY_PERCPU_PTR((ptr)); })
/* can't distinguish from other static vars, always false */
static inline bool is_kernel_percpu_address(unsigned long addr)