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authorTejun Heo <tj@kernel.org>2010-02-02 08:38:57 +0300
committerTejun Heo <tj@kernel.org>2010-02-17 05:17:38 +0300
commit43cf38eb5cea91245502df3fcee4dbfc1c74dd1c (patch)
treea58ea87af1f07b8aed4941db074f44103f321f6e /include/linux
parentab386128f20c44c458a90039ab1bdc265ac474c9 (diff)
downloadlinux-43cf38eb5cea91245502df3fcee4dbfc1c74dd1c.tar.xz
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: Tejun Heo <tj@kernel.org> Reviewed-by: Christoph Lameter <cl@linux-foundation.org> Acked-by: Paul 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>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/blktrace_api.h4
-rw-r--r--include/linux/genhd.h2
-rw-r--r--include/linux/kexec.h2
-rw-r--r--include/linux/mmzone.h2
-rw-r--r--include/linux/module.h2
-rw-r--r--include/linux/percpu_counter.h2
-rw-r--r--include/linux/srcu.h2
7 files changed, 8 insertions, 8 deletions
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index 3b73b9992b26..416bf62d6d46 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -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;
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 9717081c75ad..56b50514ab25 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -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
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index c356b6914ffd..03e8e8dbc577 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -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;
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 7874201a3556..41acd4bf7664 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -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
*/
diff --git a/include/linux/module.h b/include/linux/module.h
index 7e74ae0051cc..dd618eb026aa 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -365,7 +365,7 @@ struct module
struct module_ref {
int count;
- } *refptr;
+ } __percpu *refptr;
#endif
#ifdef CONFIG_CONSTRUCTORS
diff --git a/include/linux/percpu_counter.h b/include/linux/percpu_counter.h
index a7684a513994..9bd103c844ee 100644
--- a/include/linux/percpu_counter.h
+++ b/include/linux/percpu_counter.h
@@ -21,7 +21,7 @@ struct percpu_counter {
#ifdef CONFIG_HOTPLUG_CPU
struct list_head list; /* All percpu_counters are on a list */
#endif
- s32 *counters;
+ s32 __percpu *counters;
};
extern int percpu_counter_batch;
diff --git a/include/linux/srcu.h b/include/linux/srcu.h
index 4765d97dcafb..41eedccc962c 100644
--- a/include/linux/srcu.h
+++ b/include/linux/srcu.h
@@ -33,7 +33,7 @@ struct srcu_struct_array {
struct srcu_struct {
int completed;
- struct srcu_struct_array *per_cpu_ref;
+ struct srcu_struct_array __percpu *per_cpu_ref;
struct mutex mutex;
};