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mm/mmu_notifier: convert user range->blockable to helper function

Browse Source 
Use the mmu_notifier_range_blockable() helper function instead of directly
dereferencing the range->blockable field.  This is done to make it easier
to change the mmu_notifier range field.

This patch is the outcome of the following coccinelle patch:

%<-------------------------------------------------------------------
@@
identifier I1, FN;
@@
FN(..., struct mmu_notifier_range *I1, ...) {
<...
-I1->blockable
+mmu_notifier_range_blockable(I1)
...>
}
------------------------------------------------------------------->%

spatch --in-place --sp-file blockable.spatch --dir .

Link: http://lkml.kernel.org/r/20190326164747.24405-3-jglisse@redhat.com
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Reviewed-by: Ralph Campbell <rcampbell@nvidia.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Felix Kuehling <Felix.Kuehling@amd.com>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Cc: Ross Zwisler <zwisler@kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krcmar <rkrcmar@redhat.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Christian Koenig <christian.koenig@amd.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jérôme Glisse 2019-05-13 17:20:38 -07:00 committed by Linus Torvalds
parent 4a83bfe916
commit dfcd66604c
8 changed files with 19 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c
View File

@ -256,14 +256,14 @@ static int amdgpu_mn_invalidate_range_start_gfx(struct mmu_notifier *mn,
/* TODO we should be able to split locking for interval tree and
* amdgpu_mn_invalidate_node
*/
if (amdgpu_mn_read_lock(amn, range->blockable))
if (amdgpu_mn_read_lock(amn, mmu_notifier_range_blockable(range)))
return -EAGAIN;
it = interval_tree_iter_first(&amn->objects, range->start, end);
while (it) {
struct amdgpu_mn_node *node;
if (!range->blockable) {
if (!mmu_notifier_range_blockable(range)) {
amdgpu_mn_read_unlock(amn);
return -EAGAIN;
}
@ -299,7 +299,7 @@ static int amdgpu_mn_invalidate_range_start_hsa(struct mmu_notifier *mn,
/* notification is exclusive, but interval is inclusive */
end = range->end - 1;
if (amdgpu_mn_read_lock(amn, range->blockable))
if (amdgpu_mn_read_lock(amn, mmu_notifier_range_blockable(range)))
return -EAGAIN;
it = interval_tree_iter_first(&amn->objects, range->start, end);
@ -307,7 +307,7 @@ static int amdgpu_mn_invalidate_range_start_hsa(struct mmu_notifier *mn,
struct amdgpu_mn_node *node;
struct amdgpu_bo *bo;
if (!range->blockable) {
if (!mmu_notifier_range_blockable(range)) {
amdgpu_mn_read_unlock(amn);
return -EAGAIN;
}

2
drivers/gpu/drm/i915/i915_gem_userptr.c
View File

@ -122,7 +122,7 @@ userptr_mn_invalidate_range_start(struct mmu_notifier *_mn,
while (it) {
struct drm_i915_gem_object *obj;
if (!range->blockable) {
if (!mmu_notifier_range_blockable(range)) {
ret = -EAGAIN;
break;
}

4
drivers/gpu/drm/radeon/radeon_mn.c
View File

@ -133,7 +133,7 @@ static int radeon_mn_invalidate_range_start(struct mmu_notifier *mn,
/* TODO we should be able to split locking for interval tree and
* the tear down.
*/
if (range->blockable)
if (mmu_notifier_range_blockable(range))
mutex_lock(&rmn->lock);
else if (!mutex_trylock(&rmn->lock))
return -EAGAIN;
@ -144,7 +144,7 @@ static int radeon_mn_invalidate_range_start(struct mmu_notifier *mn,
struct radeon_bo *bo;
long r;
if (!range->blockable) {
if (!mmu_notifier_range_blockable(range)) {
ret = -EAGAIN;
goto out_unlock;
}

5
drivers/infiniband/core/umem_odp.c
View File

@ -152,7 +152,7 @@ static int ib_umem_notifier_invalidate_range_start(struct mmu_notifier *mn,
struct ib_ucontext_per_mm *per_mm =
container_of(mn, struct ib_ucontext_per_mm, mn);
if (range->blockable)
if (mmu_notifier_range_blockable(range))
down_read(&per_mm->umem_rwsem);
else if (!down_read_trylock(&per_mm->umem_rwsem))
return -EAGAIN;
@ -170,7 +170,8 @@ static int ib_umem_notifier_invalidate_range_start(struct mmu_notifier *mn,
return rbt_ib_umem_for_each_in_range(&per_mm->umem_tree, range->start,
range->end,
invalidate_range_start_trampoline,
range->blockable, NULL);
mmu_notifier_range_blockable(range),
NULL);
}
static int invalidate_range_end_trampoline(struct ib_umem_odp *item, u64 start,

6
drivers/xen/gntdev.c
View File

@ -526,20 +526,20 @@ static int mn_invl_range_start(struct mmu_notifier *mn,
struct gntdev_grant_map *map;
int ret = 0;
if (range->blockable)
if (mmu_notifier_range_blockable(range))
mutex_lock(&priv->lock);
else if (!mutex_trylock(&priv->lock))
return -EAGAIN;
list_for_each_entry(map, &priv->maps, next) {
ret = unmap_if_in_range(map, range->start, range->end,
range->blockable);
mmu_notifier_range_blockable(range));
if (ret)
goto out_unlock;
}
list_for_each_entry(map, &priv->freeable_maps, next) {
ret = unmap_if_in_range(map, range->start, range->end,
range->blockable);
mmu_notifier_range_blockable(range));
if (ret)
goto out_unlock;
}

6
mm/hmm.c
View File

@ -205,9 +205,9 @@ static int hmm_invalidate_range_start(struct mmu_notifier *mn,
update.start = nrange->start;
update.end = nrange->end;
update.event = HMM_UPDATE_INVALIDATE;
update.blockable = nrange->blockable;
update.blockable = mmu_notifier_range_blockable(nrange);
if (nrange->blockable)
if (mmu_notifier_range_blockable(nrange))
mutex_lock(&hmm->lock);
else if (!mutex_trylock(&hmm->lock)) {
ret = -EAGAIN;
@ -222,7 +222,7 @@ static int hmm_invalidate_range_start(struct mmu_notifier *mn,
}
mutex_unlock(&hmm->lock);
if (nrange->blockable)
if (mmu_notifier_range_blockable(nrange))
down_read(&hmm->mirrors_sem);
else if (!down_read_trylock(&hmm->mirrors_sem)) {
ret = -EAGAIN;

2
mm/mmu_notifier.c
View File

@ -180,7 +180,7 @@ int __mmu_notifier_invalidate_range_start(struct mmu_notifier_range *range)
if (_ret) {
pr_info("%pS callback failed with %d in %sblockable context.\n",
mn->ops->invalidate_range_start, _ret,
!range->blockable ? "non-" : "");
!mmu_notifier_range_blockable(range) ? "non-" : "");
ret = _ret;
}
}

3
virt/kvm/kvm_main.c
View File

@ -391,7 +391,8 @@ static int kvm_mmu_notifier_invalidate_range_start(struct mmu_notifier *mn,
spin_unlock(&kvm->mmu_lock);
ret = kvm_arch_mmu_notifier_invalidate_range(kvm, range->start,
range->end, range->blockable);
range->end,
mmu_notifier_range_blockable(range));
srcu_read_unlock(&kvm->srcu, idx);