From: Gustavo Padovan gustavo.padovan@collabora.co.uk
Add helper to check if fence is array.
v2: Comments from Chris Wilson - remove ternary if from ops comparison - add EXPORT_SYMBOL(fence_array_ops)
Cc: Chris Wilson chris@chris-wilson.co.uk Cc: Christian König christian.koenig@amd.com Signed-off-by: Gustavo Padovan gustavo.padovan@collabora.co.uk Reviewed-by: Chris Wilson chris@chris-wilson.co.uk Reviewed-by: Christian König christian.koenig@amd.com --- drivers/dma-buf/fence-array.c | 1 + include/linux/fence-array.h | 10 ++++++++++ 2 files changed, 11 insertions(+)
diff --git a/drivers/dma-buf/fence-array.c b/drivers/dma-buf/fence-array.c index a8731c8..ee50022 100644 --- a/drivers/dma-buf/fence-array.c +++ b/drivers/dma-buf/fence-array.c @@ -99,6 +99,7 @@ const struct fence_ops fence_array_ops = { .wait = fence_default_wait, .release = fence_array_release, }; +EXPORT_SYMBOL(fence_array_ops);
/** * fence_array_create - Create a custom fence array diff --git a/include/linux/fence-array.h b/include/linux/fence-array.h index 86baaa4..a44794e 100644 --- a/include/linux/fence-array.h +++ b/include/linux/fence-array.h @@ -52,6 +52,16 @@ struct fence_array { extern const struct fence_ops fence_array_ops;
/** + * fence_is_array - check if a fence is from the array subsclass + * + * Return true if it is a fence_array and false otherwise. + */ +static inline bool fence_is_array(struct fence *fence) +{ + return fence->ops == &fence_array_ops; +} + +/** * to_fence_array - cast a fence to a fence_array * @fence: fence to cast to a fence_array *