cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

drm_vblank_work.h (1956B)

      1/* SPDX-License-Identifier: MIT */
      2
      3#ifndef _DRM_VBLANK_WORK_H_
      4#define _DRM_VBLANK_WORK_H_
      5
      6#include <linux/kthread.h>
      7
      8struct drm_crtc;
      9
     10/**
     11 * struct drm_vblank_work - A delayed work item which delays until a target
     12 * vblank passes, and then executes at realtime priority outside of IRQ
     13 * context.
     14 *
     15 * See also:
     16 * drm_vblank_work_schedule()
     17 * drm_vblank_work_init()
     18 * drm_vblank_work_cancel_sync()
     19 * drm_vblank_work_flush()
     20 */
     21struct drm_vblank_work {
     22	/**
     23	 * @base: The base &kthread_work item which will be executed by
     24	 * &drm_vblank_crtc.worker. Drivers should not interact with this
     25	 * directly, and instead rely on drm_vblank_work_init() to initialize
     26	 * this.
     27	 */
     28	struct kthread_work base;
     29
     30	/**
     31	 * @vblank: A pointer to &drm_vblank_crtc this work item belongs to.
     32	 */
     33	struct drm_vblank_crtc *vblank;
     34
     35	/**
     36	 * @count: The target vblank this work will execute on. Drivers should
     37	 * not modify this value directly, and instead use
     38	 * drm_vblank_work_schedule()
     39	 */
     40	u64 count;
     41
     42	/**
     43	 * @cancelling: The number of drm_vblank_work_cancel_sync() calls that
     44	 * are currently running. A work item cannot be rescheduled until all
     45	 * calls have finished.
     46	 */
     47	int cancelling;
     48
     49	/**
     50	 * @node: The position of this work item in
     51	 * &drm_vblank_crtc.pending_work.
     52	 */
     53	struct list_head node;
     54};
     55
     56/**
     57 * to_drm_vblank_work - Retrieve the respective &drm_vblank_work item from a
     58 * &kthread_work
     59 * @_work: The &kthread_work embedded inside a &drm_vblank_work
     60 */
     61#define to_drm_vblank_work(_work) \
     62	container_of((_work), struct drm_vblank_work, base)
     63
     64int drm_vblank_work_schedule(struct drm_vblank_work *work,
     65			     u64 count, bool nextonmiss);
     66void drm_vblank_work_init(struct drm_vblank_work *work, struct drm_crtc *crtc,
     67			  void (*func)(struct kthread_work *work));
     68bool drm_vblank_work_cancel_sync(struct drm_vblank_work *work);
     69void drm_vblank_work_flush(struct drm_vblank_work *work);
     70
     71#endif /* !_DRM_VBLANK_WORK_H_ */