Patch "drm/xe/oa: Add input fence dependencies" has been added to the 6.12-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    drm/xe/oa: Add input fence dependencies

to the 6.12-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-xe-oa-add-input-fence-dependencies.patch
and it can be found in the queue-6.12 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 1cbfdf7ff79d7d72299f37f928d319e8b081e99b
Author: Ashutosh Dixit <ashutosh.dixit@xxxxxxxxx>
Date:   Tue Oct 22 13:03:48 2024 -0700

    drm/xe/oa: Add input fence dependencies
    
    [ Upstream commit 2fb4350a283af03a5ee34ba765783a941f942b82 ]
    
    Add input fence dependencies which will make OA configuration wait till
    these dependencies are met (till input fences signal).
    
    v2: Change add_deps arg to xe_oa_submit_bb from bool to enum (Matt Brost)
    
    Reviewed-by: Jonathan Cavitt <jonathan.cavitt@xxxxxxxxx>
    Signed-off-by: Ashutosh Dixit <ashutosh.dixit@xxxxxxxxx>
    Link: https://patchwork.freedesktop.org/patch/msgid/20241022200352.1192560-4-ashutosh.dixit@xxxxxxxxx
    Stable-dep-of: f0ed39830e60 ("xe/oa: Fix query mode of operation for OAR/OAC")
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/gpu/drm/xe/xe_oa.c b/drivers/gpu/drm/xe/xe_oa.c
index 94c558d949e1..fd14d62bfb54 100644
--- a/drivers/gpu/drm/xe/xe_oa.c
+++ b/drivers/gpu/drm/xe/xe_oa.c
@@ -42,6 +42,11 @@
 #define DEFAULT_POLL_PERIOD_NS (NSEC_PER_SEC / DEFAULT_POLL_FREQUENCY_HZ)
 #define XE_OA_UNIT_INVALID U32_MAX
 
+enum xe_oa_submit_deps {
+	XE_OA_SUBMIT_NO_DEPS,
+	XE_OA_SUBMIT_ADD_DEPS,
+};
+
 struct xe_oa_reg {
 	struct xe_reg addr;
 	u32 value;
@@ -572,7 +577,8 @@ static __poll_t xe_oa_poll(struct file *file, poll_table *wait)
 	return ret;
 }
 
-static struct dma_fence *xe_oa_submit_bb(struct xe_oa_stream *stream, struct xe_bb *bb)
+static struct dma_fence *xe_oa_submit_bb(struct xe_oa_stream *stream, enum xe_oa_submit_deps deps,
+					 struct xe_bb *bb)
 {
 	struct xe_sched_job *job;
 	struct dma_fence *fence;
@@ -585,11 +591,22 @@ static struct dma_fence *xe_oa_submit_bb(struct xe_oa_stream *stream, struct xe_
 		goto exit;
 	}
 
+	if (deps == XE_OA_SUBMIT_ADD_DEPS) {
+		for (int i = 0; i < stream->num_syncs && !err; i++)
+			err = xe_sync_entry_add_deps(&stream->syncs[i], job);
+		if (err) {
+			drm_dbg(&stream->oa->xe->drm, "xe_sync_entry_add_deps err %d\n", err);
+			goto err_put_job;
+		}
+	}
+
 	xe_sched_job_arm(job);
 	fence = dma_fence_get(&job->drm.s_fence->finished);
 	xe_sched_job_push(job);
 
 	return fence;
+err_put_job:
+	xe_sched_job_put(job);
 exit:
 	return ERR_PTR(err);
 }
@@ -667,7 +684,7 @@ static int xe_oa_modify_ctx_image(struct xe_oa_stream *stream, struct xe_lrc *lr
 
 	xe_oa_store_flex(stream, lrc, bb, flex, count);
 
-	fence = xe_oa_submit_bb(stream, bb);
+	fence = xe_oa_submit_bb(stream, XE_OA_SUBMIT_NO_DEPS, bb);
 	if (IS_ERR(fence)) {
 		err = PTR_ERR(fence);
 		goto free_bb;
@@ -696,7 +713,7 @@ static int xe_oa_load_with_lri(struct xe_oa_stream *stream, struct xe_oa_reg *re
 
 	write_cs_mi_lri(bb, reg_lri, 1);
 
-	fence = xe_oa_submit_bb(stream, bb);
+	fence = xe_oa_submit_bb(stream, XE_OA_SUBMIT_NO_DEPS, bb);
 	if (IS_ERR(fence)) {
 		err = PTR_ERR(fence);
 		goto free_bb;
@@ -944,7 +961,7 @@ static int xe_oa_emit_oa_config(struct xe_oa_stream *stream, struct xe_oa_config
 		goto exit;
 	}
 
-	fence = xe_oa_submit_bb(stream, oa_bo->bb);
+	fence = xe_oa_submit_bb(stream, XE_OA_SUBMIT_ADD_DEPS, oa_bo->bb);
 	if (IS_ERR(fence)) {
 		err = PTR_ERR(fence);
 		goto exit;