UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/msm: Move submit bo flags update from obj lock 

The flags are only accessed (1) when submit is constructed, before
enqueuing to gpu sched (ie. when still visible to only the task calling
the submit ioctl), (2) here, where we own a reference to the submit and
are serialized on the gpu sched thread, and (3) after the submit is
retired and last reference is dropped, which is serialized on the
submit's reference count.  Hence locking is unneeded here.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/527830/
Link: https://lore.kernel.org/r/20230320144356.803762-3-robdclark@gmail.com
This commit is contained in:
Rob Clark 2023-03-20 07:43:24 -07:00
parent f94e6a51e1
commit 769fec1e4f
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/msm/msm_ringbuffer.c
View File

@ -26,8 +26,8 @@ static struct dma_fence *msm_job_run(struct drm_sched_job *job)
msm_gem_lock(obj);
msm_gem_unpin_vma_fenced(submit->bos[i].vma, fctx);
msm_gem_unpin_locked(obj);
submit->bos[i].flags &= ~(BO_VMA_PINNED | BO_OBJ_PINNED);
msm_gem_unlock(obj);
submit->bos[i].flags &= ~(BO_VMA_PINNED | BO_OBJ_PINNED);
}
/* TODO move submit path over to using a per-ring lock.. */