Commit 96d4e231 authored Sep 03, 2013 by Linus Torvalds

percpu

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

parents a9238741 abec1a80

include/linux/percpu-defs.h

+4 −1

Original line number	Diff line number	Diff line
		@@ -22,9 +22,12 @@
		* 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)