Commit 43cf38eb authored by Tejun Heo's avatar Tejun Heo
Browse files

percpu: add __percpu sparse annotations to core kernel subsystems 



Add __percpu sparse annotations to core subsystems.

These annotations are to make sparse consider percpu variables to be
in a different address space and warn if accessed without going
through percpu accessors.  This patch doesn't affect normal builds.

Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Reviewed-by: default avatarChristoph Lameter <cl@linux-foundation.org>
Acked-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-mm@kvack.org
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Dipankar Sarma <dipankar@in.ibm.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Eric Biederman <ebiederm@xmission.com>
parent ab386128

include/linux/blktrace_api.h

+2 −2
Original line number Diff line number Diff line
@@ -150,8 +150,8 @@ struct blk_user_trace_setup { 
struct blk_trace {

	int trace_state;

	struct rchan *rchan;

	unsigned long *sequence;

	unsigned char *msg_data;

	unsigned long __percpu *sequence;

	unsigned char __percpu *msg_data;

	u16 act_mask;

	u64 start_lba;

	u64 end_lba;

include/linux/genhd.h

+1 −1
Original line number Diff line number Diff line
@@ -101,7 +101,7 @@ struct hd_struct { 
	unsigned long stamp;

	int in_flight[2];

#ifdef	CONFIG_SMP

	struct disk_stats *dkstats;

	struct disk_stats __percpu *dkstats;

#else

	struct disk_stats dkstats;

#endif

include/linux/kexec.h

+1 −1
Original line number Diff line number Diff line
@@ -199,7 +199,7 @@ extern struct kimage *kexec_crash_image; 
 */

extern struct resource crashk_res;

typedef u32 note_buf_t[KEXEC_NOTE_BYTES/4];

extern note_buf_t *crash_notes;

extern note_buf_t __percpu *crash_notes;

extern u32 vmcoreinfo_note[VMCOREINFO_NOTE_SIZE/4];

extern size_t vmcoreinfo_size;

extern size_t vmcoreinfo_max_size;

include/linux/mmzone.h

+1 −1
Original line number Diff line number Diff line
@@ -301,7 +301,7 @@ struct zone { 
	unsigned long		min_unmapped_pages;

	unsigned long		min_slab_pages;

#endif

	struct per_cpu_pageset	*pageset;

	struct per_cpu_pageset __percpu *pageset;

	/*

	 * free areas of different sizes

	 */

include/linux/module.h

+1 −1
Original line number Diff line number Diff line
@@ -365,7 +365,7 @@ struct module 


	struct module_ref {

		int count;

	} *refptr;

	} __percpu *refptr;

#endif



#ifdef CONFIG_CONSTRUCTORS

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