[v2,33/34] drm/msm: rd dumping support for sparse

Commit Message

Rob Clark March 19, 2025, 2:52 p.m. UTC

From: Rob Clark <[e-mail]>

As with devcoredump, we need to iterate the VMAs to figure out what to
dump.

Signed-off-by: Rob Clark <[e-mail]>
---
 drivers/gpu/drm/msm/msm_rd.c | 48 +++++++++++++++++++++++++-----------
 1 file changed, 33 insertions(+), 15 deletions(-)

Patch

diff --git a/drivers/gpu/drm/msm/msm_rd.c b/drivers/gpu/drm/msm/msm_rd.c
index edbcb93410a9..1876b789c924 100644
--- a/drivers/gpu/drm/msm/msm_rd.c
+++ b/drivers/gpu/drm/msm/msm_rd.c
@@ -372,25 +372,43 @@  void msm_rd_dump_submit(struct msm_rd_state *rd, struct msm_gem_submit *submit,
 
 	rd_write_section(rd, RD_CMD, msg, ALIGN(n, 4));
 
-	for (i = 0; i < submit->nr_bos; i++) {
-		struct drm_gem_object *obj = submit->bos[i].obj;
-		bool dump = rd_full || (submit->bos[i].flags & MSM_SUBMIT_BO_DUMP);
+	if (msm_context_is_vmbind(submit->queue->ctx)) {
+		struct drm_gpuva *vma;
 
-		snapshot_buf(rd, obj, submit->bos[i].iova, dump, 0, obj->size);
-	}
+		mutex_lock(&to_msm_vm(submit->vm)->vm_lock);
+		drm_gpuvm_for_each_va (vma, submit->vm) {
+			bool dump = rd_full || (vma->flags & MSM_VMA_DUMP);
 
-	for (i = 0; i < submit->nr_cmds; i++) {
-		uint32_t szd  = submit->cmd[i].size; /* in dwords */
-		int idx = submit->cmd[i].idx;
-		bool dump = rd_full || (submit->bos[idx].flags & MSM_SUBMIT_BO_DUMP);
+			/* Skip MAP_NULL/PRR VMAs: */
+			if (!vma->gem.obj)
+				continue;
+
+			snapshot_buf(rd, vma->gem.obj, vma->va.addr, dump,
+				     vma->gem.offset, vma->va.range);
+		}
+		mutex_unlock(&to_msm_vm(submit->vm)->vm_lock);
+
+	} else {
+		for (i = 0; i < submit->nr_bos; i++) {
+			struct drm_gem_object *obj = submit->bos[i].obj;
+			bool dump = rd_full || (submit->bos[i].flags & MSM_SUBMIT_BO_DUMP);
+
+			snapshot_buf(rd, obj, submit->bos[i].iova, dump, 0, obj->size);
+		}
+
+		for (i = 0; i < submit->nr_cmds; i++) {
+			uint32_t szd  = submit->cmd[i].size; /* in dwords */
+			int idx = submit->cmd[i].idx;
+			bool dump = rd_full || (submit->bos[idx].flags & MSM_SUBMIT_BO_DUMP);
 
-		/* snapshot cmdstream bo's (if we haven't already): */
-		if (!dump) {
-			struct drm_gem_object *obj = submit->bos[idx].obj;
-			size_t offset = submit->cmd[i].iova - submit->bos[idx].iova;
+			/* snapshot cmdstream bo's (if we haven't already): */
+			if (!dump) {
+				struct drm_gem_object *obj = submit->bos[idx].obj;
+				size_t offset = submit->cmd[i].iova - submit->bos[idx].iova;
 
-			snapshot_buf(rd, obj, submit->cmd[i].iova, true,
-				     offset, szd * 4);
+				snapshot_buf(rd, obj, submit->cmd[i].iova, true,
+					offset, szd * 4);
+			}
 		}
 	}