forked from mirrors/linux
f54d186700
I plan to usurp the short name of struct fence for a core kernel struct, and so I need to rename the specialised fence/timeline for DMA operations to make room. A consensus was reached in https://lists.freedesktop.org/archives/dri-devel/2016-July/113083.html that making clear this fence applies to DMA operations was a good thing. Since then the patch has grown a bit as usage increases, so hopefully it remains a good thing! (v2...: rebase, rerun spatch) v3: Compile on msm, spotted a manual fixup that I broke. v4: Try again for msm, sorry Daniel coccinelle script: @@ @@ - struct fence + struct dma_fence @@ @@ - struct fence_ops + struct dma_fence_ops @@ @@ - struct fence_cb + struct dma_fence_cb @@ @@ - struct fence_array + struct dma_fence_array @@ @@ - enum fence_flag_bits + enum dma_fence_flag_bits @@ @@ ( - fence_init + dma_fence_init | - fence_release + dma_fence_release | - fence_free + dma_fence_free | - fence_get + dma_fence_get | - fence_get_rcu + dma_fence_get_rcu | - fence_put + dma_fence_put | - fence_signal + dma_fence_signal | - fence_signal_locked + dma_fence_signal_locked | - fence_default_wait + dma_fence_default_wait | - fence_add_callback + dma_fence_add_callback | - fence_remove_callback + dma_fence_remove_callback | - fence_enable_sw_signaling + dma_fence_enable_sw_signaling | - fence_is_signaled_locked + dma_fence_is_signaled_locked | - fence_is_signaled + dma_fence_is_signaled | - fence_is_later + dma_fence_is_later | - fence_later + dma_fence_later | - fence_wait_timeout + dma_fence_wait_timeout | - fence_wait_any_timeout + dma_fence_wait_any_timeout | - fence_wait + dma_fence_wait | - fence_context_alloc + dma_fence_context_alloc | - fence_array_create + dma_fence_array_create | - to_fence_array + to_dma_fence_array | - fence_is_array + dma_fence_is_array | - trace_fence_emit + trace_dma_fence_emit | - FENCE_TRACE + DMA_FENCE_TRACE | - FENCE_WARN + DMA_FENCE_WARN | - FENCE_ERR + DMA_FENCE_ERR ) ( ... ) Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Acked-by: Sumit Semwal <sumit.semwal@linaro.org> Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20161025120045.28839-1-chris@chris-wilson.co.uk
83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
/*
|
|
* Sync File validation framework and debug infomation
|
|
*
|
|
* Copyright (C) 2012 Google, Inc.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
*/
|
|
|
|
#ifndef _LINUX_SYNC_H
|
|
#define _LINUX_SYNC_H
|
|
|
|
#include <linux/list.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/dma-fence.h>
|
|
|
|
#include <linux/sync_file.h>
|
|
#include <uapi/linux/sync_file.h>
|
|
|
|
/**
|
|
* struct sync_timeline - sync object
|
|
* @kref: reference count on fence.
|
|
* @name: name of the sync_timeline. Useful for debugging
|
|
* @child_list_head: list of children sync_pts for this sync_timeline
|
|
* @child_list_lock: lock protecting @child_list_head and fence.status
|
|
* @active_list_head: list of active (unsignaled/errored) sync_pts
|
|
* @sync_timeline_list: membership in global sync_timeline_list
|
|
*/
|
|
struct sync_timeline {
|
|
struct kref kref;
|
|
char name[32];
|
|
|
|
/* protected by child_list_lock */
|
|
u64 context;
|
|
int value;
|
|
|
|
struct list_head child_list_head;
|
|
spinlock_t child_list_lock;
|
|
|
|
struct list_head active_list_head;
|
|
|
|
struct list_head sync_timeline_list;
|
|
};
|
|
|
|
static inline struct sync_timeline *dma_fence_parent(struct dma_fence *fence)
|
|
{
|
|
return container_of(fence->lock, struct sync_timeline, child_list_lock);
|
|
}
|
|
|
|
/**
|
|
* struct sync_pt - sync_pt object
|
|
* @base: base fence object
|
|
* @child_list: sync timeline child's list
|
|
* @active_list: sync timeline active child's list
|
|
*/
|
|
struct sync_pt {
|
|
struct dma_fence base;
|
|
struct list_head child_list;
|
|
struct list_head active_list;
|
|
};
|
|
|
|
#ifdef CONFIG_SW_SYNC
|
|
|
|
extern const struct file_operations sw_sync_debugfs_fops;
|
|
|
|
void sync_timeline_debug_add(struct sync_timeline *obj);
|
|
void sync_timeline_debug_remove(struct sync_timeline *obj);
|
|
void sync_file_debug_add(struct sync_file *fence);
|
|
void sync_file_debug_remove(struct sync_file *fence);
|
|
void sync_dump(void);
|
|
|
|
#else
|
|
# define sync_timeline_debug_add(obj)
|
|
# define sync_timeline_debug_remove(obj)
|
|
# define sync_file_debug_add(fence)
|
|
# define sync_file_debug_remove(fence)
|
|
# define sync_dump()
|
|
#endif
|
|
|
|
#endif /* _LINUX_SYNC_H */
|