linux-kernel - [PATCH v3 02/15] drm/msm: Small submit cleanup

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Date:   Tue, 26 Jul 2022 10:50:26 -0700
From:   Rob Clark <robdclark@...il.com>
To:     dri-devel@...ts.freedesktop.org
Cc:     freedreno@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        Rob Clark <robdclark@...omium.org>,
        Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v3 02/15] drm/msm: Small submit cleanup

From: Rob Clark <robdclark@...omium.org>

Move more initialization into submit_create().

Signed-off-by: Rob Clark <robdclark@...omium.org>
---
 drivers/gpu/drm/msm/msm_gem_submit.c | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c
index b7c61a99d274..c7819781879c 100644
--- a/drivers/gpu/drm/msm/msm_gem_submit.c
+++ b/drivers/gpu/drm/msm/msm_gem_submit.c
@@ -26,6 +26,7 @@ static struct msm_gem_submit *submit_create(struct drm_device *dev,
 		struct msm_gpu_submitqueue *queue, uint32_t nr_bos,
 		uint32_t nr_cmds)
 {
+	static atomic_t ident = ATOMIC_INIT(0);
 	struct msm_gem_submit *submit;
 	uint64_t sz;
 	int ret;
@@ -52,9 +53,13 @@ static struct msm_gem_submit *submit_create(struct drm_device *dev,
 	submit->gpu = gpu;
 	submit->cmd = (void *)&submit->bos[nr_bos];
 	submit->queue = queue;
+	submit->pid = get_pid(task_pid(current));
 	submit->ring = gpu->rb[queue->ring_nr];
 	submit->fault_dumped = false;
 
+	/* Get a unique identifier for the submission for logging purposes */
+	submit->ident = atomic_inc_return(&ident) - 1;
+
 	INIT_LIST_HEAD(&submit->node);
 
 	return submit;
@@ -718,7 +723,6 @@ static void msm_process_post_deps(struct msm_submit_post_dep *post_deps,
 int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
 		struct drm_file *file)
 {
-	static atomic_t ident = ATOMIC_INIT(0);
 	struct msm_drm_private *priv = dev->dev_private;
 	struct drm_msm_gem_submit *args = data;
 	struct msm_file_private *ctx = file->driver_priv;
@@ -729,10 +733,9 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
 	struct msm_submit_post_dep *post_deps = NULL;
 	struct drm_syncobj **syncobjs_to_reset = NULL;
 	int out_fence_fd = -1;
-	struct pid *pid = get_pid(task_pid(current));
 	bool has_ww_ticket = false;
 	unsigned i;
-	int ret, submitid;
+	int ret;
 
 	if (!gpu)
 		return -ENXIO;
@@ -764,12 +767,7 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
 	if (!queue)
 		return -ENOENT;
 
-	/* Get a unique identifier for the submission for logging purposes */
-	submitid = atomic_inc_return(&ident) - 1;
-
 	ring = gpu->rb[queue->ring_nr];
-	trace_msm_gpu_submit(pid_nr(pid), ring->id, submitid,
-		args->nr_bos, args->nr_cmds);
 
 	if (args->flags & MSM_SUBMIT_FENCE_FD_OUT) {
 		out_fence_fd = get_unused_fd_flags(O_CLOEXEC);
@@ -783,13 +781,13 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
 	if (IS_ERR(submit))
 		return PTR_ERR(submit);
 
+	trace_msm_gpu_submit(pid_nr(submit->pid), ring->id, submit->ident,
+		args->nr_bos, args->nr_cmds);
+
 	ret = mutex_lock_interruptible(&queue->lock);
 	if (ret)
 		goto out_post_unlock;
 
-	submit->pid = pid;
-	submit->ident = submitid;
-
 	if (args->flags & MSM_SUBMIT_SUDO)
 		submit->in_rb = true;
 
-- 
2.36.1