mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-25 22:45:23 +07:00
99f8284367
Up until recently sync_file were create to export a single dma-fence to userspace, and so we could canabalise a bit insie dma-fence to mark whether or not we had enable polling for the sync_file itself. However, with the advent of syncobj, we do allow userspace to create multiple sync_files for a single dma-fence. (Similarly, that the sw-sync validation framework also started returning multiple sync-files wrapping a single dma-fence for a syncpt also triggering the problem.) This patch reverts my suggestion in commite241655373("dma-buf/sync_file: only enable fence signalling on poll()") to use a single bit in the shared dma-fence and restores the sync_file->flags for tracking the bits individually. Reported-by: Gustavo Padovan <gustavo.padovan@collabora.com> Fixes:f1e8c67123("dma-buf/sw-sync: Use an rbtree to sort fences in the timeline") Fixes:e9083420bb("drm: introduce sync objects (v4)") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Sean Paul <seanpaul@chromium.org> Cc: Gustavo Padovan <gustavo@padovan.org> Cc: dri-devel@lists.freedesktop.org Cc: <drm-intel-fixes@lists.freedesktop.org> # v4.13-rc1+ Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170728212951.7818-1-chris@chris-wilson.co.uk (cherry picked from commitdb1fc97ca0)
59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/*
|
|
* include/linux/sync_file.h
|
|
*
|
|
* 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_FILE_H
|
|
#define _LINUX_SYNC_FILE_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/ktime.h>
|
|
#include <linux/list.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/dma-fence.h>
|
|
#include <linux/dma-fence-array.h>
|
|
|
|
/**
|
|
* struct sync_file - sync file to export to the userspace
|
|
* @file: file representing this fence
|
|
* @sync_file_list: membership in global file list
|
|
* @wq: wait queue for fence signaling
|
|
* @fence: fence with the fences in the sync_file
|
|
* @cb: fence callback information
|
|
*/
|
|
struct sync_file {
|
|
struct file *file;
|
|
/**
|
|
* @user_name:
|
|
*
|
|
* Name of the sync file provided by userspace, for merged fences.
|
|
* Otherwise generated through driver callbacks (in which case the
|
|
* entire array is 0).
|
|
*/
|
|
char user_name[32];
|
|
#ifdef CONFIG_DEBUG_FS
|
|
struct list_head sync_file_list;
|
|
#endif
|
|
|
|
wait_queue_head_t wq;
|
|
unsigned long flags;
|
|
|
|
struct dma_fence *fence;
|
|
struct dma_fence_cb cb;
|
|
};
|
|
|
|
#define POLL_ENABLED 0
|
|
|
|
struct sync_file *sync_file_create(struct dma_fence *fence);
|
|
struct dma_fence *sync_file_get_fence(int fd);
|
|
char *sync_file_get_name(struct sync_file *sync_file, char *buf, int len);
|
|
|
|
#endif /* _LINUX_SYNC_H */
|