Pull single percpu update from Tejun Heo:
"Just a single patch to update type verification macro for percpu
accessors.
Christoph is trying to replace __get_cpu_var() with this_cpu accessors
which needs this update. There are still some issues to be resolved
but eventually the conversion patches are likely to be routed through
different trees, so I think it'd be convenient to merge this commit
early"
* 'for-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
percpu: Make __verify_pcu_ptr handle per cpu pointers to arrays
* Macro which verifies @ptr is a percpu pointer without evaluating
* @ptr. This is to be used in percpu accessors to verify that the
* input parameter is a percpu pointer.
+ *
+ * + 0 is required in order to convert the pointer type from a
+ * potential array type to a pointer to a single item of the array.
*/
#define __verify_pcpu_ptr(ptr) do { \
- const void __percpu *__vpp_verify = (typeof(ptr))NULL; \
+ const void __percpu *__vpp_verify = (typeof((ptr) + 0))NULL; \
(void)__vpp_verify; \
} while (0)