[PATCH 4/6] drm/msm: Clean up and enhance the output of the 'gem' debugfs node

[Jordan Crouse <jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>]

Add headers for the 'gem' debugfs file to make it easier to remember
what all the values mean and move the list of virtual address regions
to the next line and add the name and map status to make it clearer
what we are looking at.

Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
---
 drivers/gpu/drm/msm/msm_gem.c | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c
index 189d7f0f1aad..805a300f8663 100644
--- a/drivers/gpu/drm/msm/msm_gem.c
+++ b/drivers/gpu/drm/msm/msm_gem.c
@@ -763,16 +763,23 @@ void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m)
 		break;
 	}
 
-	seq_printf(m, "%08x: %c %2d (%2d) %08llx %p\t",
+	seq_printf(m, "%08x: %c %2d (%2d) %08llx %p",
 			msm_obj->flags, is_active(msm_obj) ? 'A' : 'I',
 			obj->name, kref_read(&obj->refcount),
 			off, msm_obj->vaddr);
 
-	/* FIXME: we need to print the address space here too */
-	list_for_each_entry(vma, &msm_obj->vmas, list)
-		seq_printf(m, " %08llx", vma->iova);
+	seq_printf(m, " %08zu%9s\n", obj->size, madv);
 
-	seq_printf(m, " %zu%s\n", obj->size, madv);
+	if (!list_empty(&msm_obj->vmas)) {
+
+		seq_puts(m, "   vmas:");
+
+		list_for_each_entry(vma, &msm_obj->vmas, list)
+			seq_printf(m, " [%s: %08llx,%s]", vma->aspace->name,
+				vma->iova, vma->mapped ? "mapped" : "unmapped");
+
+		seq_puts(m, "\n");
+	}
 
 	rcu_read_lock();
 	fobj = rcu_dereference(robj->fence);
@@ -799,9 +806,10 @@ void msm_gem_describe_objects(struct list_head *list, struct seq_file *m)
 	int count = 0;
 	size_t size = 0;
 
+	seq_puts(m, "   flags       id ref offset   kaddr           size    madv\n");
 	list_for_each_entry(msm_obj, list, mm_list) {
 		struct drm_gem_object *obj = &msm_obj->base;
-		seq_printf(m, "   ");
+		seq_puts(m, "   ");
 		msm_gem_describe(obj, m);
 		count++;
 		size += obj->size;
-- 
2.18.0

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