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| author |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-03-08 11:54:14 +0100 |
|---|---|---|
| committer |   Christian Borntraeger <borntraeger@de.ibm.com> | 2016-06-20 09:46:49 +0200 |
| commit | 8ecb1a59d6c6674bc98e4eee0c2482490748e21a (patch) | |
| tree | c39abe49adf4ef52fd94342b459c7c011cbd6da2 /arch/s390/include/asm/gmap.h | |
| parent | s390/kvm: page table invalidation notifier (diff) | |
| download | linux-dev-8ecb1a59d6c6674bc98e4eee0c2482490748e21a.tar.xz linux-dev-8ecb1a59d6c6674bc98e4eee0c2482490748e21a.zip | |
s390/mm: use RCU for gmap notifier list and the per-mm gmap list
The gmap notifier list and the gmap list in the mm_struct change rarely.
Use RCU to optimize the reader of these lists.
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/gmap.h')
| -rw-r--r-- | arch/s390/include/asm/gmap.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/include/asm/gmap.h b/arch/s390/include/asm/gmap.h index bc0eadf9ed8e..2cf49624af99 100644 --- a/arch/s390/include/asm/gmap.h +++ b/arch/s390/include/asm/gmap.h @@ -39,6 +39,7 @@ struct gmap { */ struct gmap_notifier { struct list_head list; + struct rcu_head rcu; void (*notifier_call)(struct gmap *gmap, unsigned long start, unsigned long end); }; |