Commit 18cb2aef authored by Namhyung Kim's avatar Namhyung Kim Committed by Tejun Heo
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percpu: handle __percpu notations in UP accessors 



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: default avatarNamhyung Kim <namhyung@gmail.com>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent 4a386c3e

include/asm-generic/percpu.h

+10 −5
Original line number Diff line number Diff line
@@ -70,9 +70,14 @@ 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 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)

include/linux/percpu.h

+1 −1
Original line number Diff line number Diff line
@@ -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)