| Message ID | 20210527162650.1182544-20-jason@jlekstrand.net (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/i915/gem: ioctl clean-ups (v6) | expand |
On Thu, May 27, 2021 at 11:26:40AM -0500, Jason Ekstrand wrote: > This is the VM equivalent of i915_gem_context_lookup. It's only used > once in this patch but future patches will need to duplicate this lookup > code so it's better to have it in a helper. > > Signed-off-by: Jason Ekstrand <jason@jlekstrand.net> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> > --- > drivers/gpu/drm/i915/gem/i915_gem_context.c | 6 +----- > drivers/gpu/drm/i915/i915_drv.h | 14 ++++++++++++++ > 2 files changed, 15 insertions(+), 5 deletions(-) > > diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c > index d247fb223aac7..12a148ba421b6 100644 > --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c > +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c > @@ -1346,11 +1346,7 @@ static int set_ppgtt(struct drm_i915_file_private *file_priv, > if (upper_32_bits(args->value)) > return -ENOENT; > > - rcu_read_lock(); > - vm = xa_load(&file_priv->vm_xa, args->value); > - if (vm && !kref_get_unless_zero(&vm->ref)) > - vm = NULL; > - rcu_read_unlock(); > + vm = i915_gem_vm_lookup(file_priv, args->value); > if (!vm) > return -ENOENT; > > diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h > index 48316d273af66..fee2342219da1 100644 > --- a/drivers/gpu/drm/i915/i915_drv.h > +++ b/drivers/gpu/drm/i915/i915_drv.h > @@ -1871,6 +1871,20 @@ i915_gem_context_lookup(struct drm_i915_file_private *file_priv, u32 id) > return ctx; > } > > +static inline struct i915_address_space * > +i915_gem_vm_lookup(struct drm_i915_file_private *file_priv, u32 id) > +{ > + struct i915_address_space *vm; > + > + rcu_read_lock(); > + vm = xa_load(&file_priv->vm_xa, id); > + if (vm && !kref_get_unless_zero(&vm->ref)) > + vm = NULL; > + rcu_read_unlock(); > + > + return vm; > +} > + > /* i915_gem_evict.c */ > int __must_check i915_gem_evict_something(struct i915_address_space *vm, > u64 min_size, u64 alignment, > -- > 2.31.1 >
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index d247fb223aac7..12a148ba421b6 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -1346,11 +1346,7 @@ static int set_ppgtt(struct drm_i915_file_private *file_priv, if (upper_32_bits(args->value)) return -ENOENT; - rcu_read_lock(); - vm = xa_load(&file_priv->vm_xa, args->value); - if (vm && !kref_get_unless_zero(&vm->ref)) - vm = NULL; - rcu_read_unlock(); + vm = i915_gem_vm_lookup(file_priv, args->value); if (!vm) return -ENOENT; diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 48316d273af66..fee2342219da1 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1871,6 +1871,20 @@ i915_gem_context_lookup(struct drm_i915_file_private *file_priv, u32 id) return ctx; } +static inline struct i915_address_space * +i915_gem_vm_lookup(struct drm_i915_file_private *file_priv, u32 id) +{ + struct i915_address_space *vm; + + rcu_read_lock(); + vm = xa_load(&file_priv->vm_xa, id); + if (vm && !kref_get_unless_zero(&vm->ref)) + vm = NULL; + rcu_read_unlock(); + + return vm; +} + /* i915_gem_evict.c */ int __must_check i915_gem_evict_something(struct i915_address_space *vm, u64 min_size, u64 alignment,
This is the VM equivalent of i915_gem_context_lookup. It's only used once in this patch but future patches will need to duplicate this lookup code so it's better to have it in a helper. Signed-off-by: Jason Ekstrand <jason@jlekstrand.net> --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 6 +----- drivers/gpu/drm/i915/i915_drv.h | 14 ++++++++++++++ 2 files changed, 15 insertions(+), 5 deletions(-)