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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/mmu_context.h | |
| parent | 414d3b07496604a4372466a6b474ca24291a143c (diff) | |
| download | talos-obmc-linux-8ecb1a59d6c6674bc98e4eee0c2482490748e21a.tar.gz talos-obmc-linux-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/mmu_context.h')
| -rw-r--r-- | arch/s390/include/asm/mmu_context.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h index c837b79b455d..3ce3854b7a41 100644 --- a/arch/s390/include/asm/mmu_context.h +++ b/arch/s390/include/asm/mmu_context.h @@ -15,8 +15,9 @@ static inline int init_new_context(struct task_struct *tsk, struct mm_struct *mm) { - spin_lock_init(&mm->context.list_lock); + spin_lock_init(&mm->context.pgtable_lock); INIT_LIST_HEAD(&mm->context.pgtable_list); + spin_lock_init(&mm->context.gmap_lock); INIT_LIST_HEAD(&mm->context.gmap_list); cpumask_clear(&mm->context.cpu_attach_mask); atomic_set(&mm->context.attach_count, 0); |
