diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/include/drm/drm_flip_work.h | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/include/drm/drm_flip_work.h')
-rw-r--r-- | kernel/include/drm/drm_flip_work.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/kernel/include/drm/drm_flip_work.h b/kernel/include/drm/drm_flip_work.h new file mode 100644 index 000000000..d387cf06a --- /dev/null +++ b/kernel/include/drm/drm_flip_work.h @@ -0,0 +1,92 @@ +/* + * Copyright (C) 2013 Red Hat + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#ifndef DRM_FLIP_WORK_H +#define DRM_FLIP_WORK_H + +#include <linux/kfifo.h> +#include <linux/spinlock.h> +#include <linux/workqueue.h> + +/** + * DOC: flip utils + * + * Util to queue up work to run from work-queue context after flip/vblank. + * Typically this can be used to defer unref of framebuffer's, cursor + * bo's, etc until after vblank. The APIs are all thread-safe. + * Moreover, drm_flip_work_queue_task and drm_flip_work_queue can be called + * in atomic context. + */ + +struct drm_flip_work; + +/* + * drm_flip_func_t - callback function + * + * @work: the flip work + * @val: value queued via drm_flip_work_queue() + * + * Callback function to be called for each of the queue'd work items after + * drm_flip_work_commit() is called. + */ +typedef void (*drm_flip_func_t)(struct drm_flip_work *work, void *val); + +/** + * struct drm_flip_task - flip work task + * @node: list entry element + * @data: data to pass to work->func + */ +struct drm_flip_task { + struct list_head node; + void *data; +}; + +/** + * struct drm_flip_work - flip work queue + * @name: debug name + * @func: callback fxn called for each committed item + * @worker: worker which calls @func + * @queued: queued tasks + * @commited: commited tasks + * @lock: lock to access queued and commited lists + */ +struct drm_flip_work { + const char *name; + drm_flip_func_t func; + struct work_struct worker; + struct list_head queued; + struct list_head commited; + spinlock_t lock; +}; + +struct drm_flip_task *drm_flip_work_allocate_task(void *data, gfp_t flags); +void drm_flip_work_queue_task(struct drm_flip_work *work, + struct drm_flip_task *task); +void drm_flip_work_queue(struct drm_flip_work *work, void *val); +void drm_flip_work_commit(struct drm_flip_work *work, + struct workqueue_struct *wq); +void drm_flip_work_init(struct drm_flip_work *work, + const char *name, drm_flip_func_t func); +void drm_flip_work_cleanup(struct drm_flip_work *work); + +#endif /* DRM_FLIP_WORK_H */ |