mirror of
git://nv-tegra.nvidia.com/linux-nvgpu.git
synced 2025-12-23 09:57:08 +03:00
52753b51f1
Currently, we create sync_fence (from nvhost_sync_create_fence()) for every submit But not all submits request for a sync_fence. Also, nvhost_sync_create_fence() API takes about 1/3rd of the total submit path. Hence to optimize, we can allocate sync_fence only when user explicitly asks for it using (NVGPU_SUBMIT_GPFIFO_FLAGS_FENCE_GET && NVGPU_SUBMIT_GPFIFO_FLAGS_SYNC_FENCE) Also, in CDE path from gk20a_prepare_compressible_read(), we reuse existing fence stored in "state" and that can result into not returning sync_fence_fd when user asked for it Hence, force allocation of sync_fence when job submission comes from CDE path Bug 200141116 Change-Id: Ia921701bf0e2432d6b8a5e8b7d91160e7f52db1e Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: http://git-master/r/812845 (cherry picked from commit 5fd47015eeed00352cc8473eff969a66c94fee98) Reviewed-on: http://git-master/r/837662 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Sachin Nikam <snikam@nvidia.com>
70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
/*
|
|
* drivers/video/tegra/host/gk20a/fence_gk20a.h
|
|
*
|
|
* GK20A Fences
|
|
*
|
|
* Copyright (c) 2014-2015, NVIDIA CORPORATION. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope 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 _GK20A_FENCE_H_
|
|
#define _GK20A_FENCE_H_
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/kref.h>
|
|
#include <linux/wait.h>
|
|
|
|
struct platform_device;
|
|
struct sync_timeline;
|
|
struct sync_fence;
|
|
struct gk20a_semaphore;
|
|
struct channel_gk20a;
|
|
|
|
struct gk20a_fence_ops;
|
|
|
|
struct gk20a_fence {
|
|
/* Valid for all fence types: */
|
|
struct kref ref;
|
|
bool wfi;
|
|
struct sync_fence *sync_fence;
|
|
const struct gk20a_fence_ops *ops;
|
|
|
|
/* Valid for fences created from semaphores: */
|
|
struct gk20a_semaphore *semaphore;
|
|
wait_queue_head_t *semaphore_wq;
|
|
|
|
/* Valid for fences created from syncpoints: */
|
|
struct platform_device *host1x_pdev;
|
|
u32 syncpt_id;
|
|
u32 syncpt_value;
|
|
};
|
|
|
|
/* Fences can be created from semaphores or syncpoint (id, value) pairs */
|
|
struct gk20a_fence *gk20a_fence_from_semaphore(
|
|
struct sync_timeline *timeline,
|
|
struct gk20a_semaphore *semaphore,
|
|
wait_queue_head_t *semaphore_wq,
|
|
struct sync_fence *dependency,
|
|
bool wfi);
|
|
|
|
struct gk20a_fence *gk20a_fence_from_syncpt(
|
|
struct platform_device *host1x_pdev,
|
|
u32 id, u32 value, bool wfi,
|
|
bool need_sync_fence);
|
|
|
|
/* Fence operations */
|
|
void gk20a_fence_put(struct gk20a_fence *f);
|
|
struct gk20a_fence *gk20a_fence_get(struct gk20a_fence *f);
|
|
int gk20a_fence_wait(struct gk20a_fence *f, int timeout);
|
|
bool gk20a_fence_is_expired(struct gk20a_fence *f);
|
|
int gk20a_fence_install_fd(struct gk20a_fence *f);
|
|
|
|
#endif
|