[PATCH v4 01/15] drm/msm: Reorder lock vs submit alloc

[Rob Clark]

From: Rob Clark <robdcl...@chromium.org>

This lets us drop the NORETRY.

Signed-off-by: Rob Clark <robdcl...@chromium.org>
---
 drivers/gpu/drm/msm/msm_gem_submit.c | 24 ++++++++++--------------
 1 file changed, 10 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c 
b/drivers/gpu/drm/msm/msm_gem_submit.c
index c9e4aeb14f4a..b7c61a99d274 100644
--- a/drivers/gpu/drm/msm/msm_gem_submit.c
+++ b/drivers/gpu/drm/msm/msm_gem_submit.c
@@ -36,7 +36,7 @@ static struct msm_gem_submit *submit_create(struct drm_device 
*dev,
        if (sz > SIZE_MAX)
                return ERR_PTR(-ENOMEM);
 
-       submit = kzalloc(sz, GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY);
+       submit = kzalloc(sz, GFP_KERNEL);
        if (!submit)
                return ERR_PTR(-ENOMEM);
 
@@ -771,25 +771,21 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void 
*data,
        trace_msm_gpu_submit(pid_nr(pid), ring->id, submitid,
                args->nr_bos, args->nr_cmds);
 
-       ret = mutex_lock_interruptible(&queue->lock);
-       if (ret)
-               goto out_post_unlock;
-
        if (args->flags & MSM_SUBMIT_FENCE_FD_OUT) {
                out_fence_fd = get_unused_fd_flags(O_CLOEXEC);
                if (out_fence_fd < 0) {
                        ret = out_fence_fd;
-                       goto out_unlock;
+                       return ret;
                }
        }
 
-       submit = submit_create(dev, gpu, queue, args->nr_bos,
-               args->nr_cmds);
-       if (IS_ERR(submit)) {
-               ret = PTR_ERR(submit);
-               submit = NULL;
-               goto out_unlock;
-       }
+       submit = submit_create(dev, gpu, queue, args->nr_bos, args->nr_cmds);
+       if (IS_ERR(submit))
+               return PTR_ERR(submit);
+
+       ret = mutex_lock_interruptible(&queue->lock);
+       if (ret)
+               goto out_post_unlock;
 
        submit->pid = pid;
        submit->ident = submitid;
@@ -965,9 +961,9 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
        if (ret && (out_fence_fd >= 0))
                put_unused_fd(out_fence_fd);
        mutex_unlock(&queue->lock);
+out_post_unlock:
        if (submit)
                msm_gem_submit_put(submit);
-out_post_unlock:
        if (!IS_ERR_OR_NULL(post_deps)) {
                for (i = 0; i < args->nr_out_syncobjs; ++i) {
                        kfree(post_deps[i].chain);
-- 
2.36.1