2009-10-29 14:02:23

by Tejun Heo

Subject: [PATCH percpu#for-next] ia64: add sparse annotation to __ia64_per_cpu_var()

ia64 has its own optimized percpu accessor - __ia64_per_cpu_var().
Add percpu sparse annotations to it.

Signed-off-by: Tejun Heo <[email protected]>
---
arch/ia64/include/asm/percpu.h | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

Index: work/arch/ia64/include/asm/percpu.h
===================================================================
--- work.orig/arch/ia64/include/asm/percpu.h
+++ work/arch/ia64/include/asm/percpu.h
@@ -39,7 +39,10 @@ extern void *per_cpu_init(void);
* On the positive side, using __ia64_per_cpu_var() instead of __get_cpu_var() is slightly
* more efficient.
*/
-#define __ia64_per_cpu_var(var) var
+#define __ia64_per_cpu_var(var) (*({ \
+ __verify_pcpu_ptr(&(var)); \
+ ((typeof(var) __kernel __force *)&(var)); \
+}))

#include <asm-generic/percpu.h>

2009-10-29 14:48:50

by Christoph Lameter

Subject: Re: [PATCH percpu#for-next] ia64: add sparse annotation to __ia64_per_cpu_var()

On Thu, 29 Oct 2009, Tejun Heo wrote:

> ia64 has its own optimized percpu accessor - __ia64_per_cpu_var().
> Add percpu sparse annotations to it.

Reviewed-by: Christoph Lameter <[email protected]>