msm: kgsl: add per-process memory info to debugfs

Add a file for each process in debugfs named, kgsl/proc/<pid>/mem
which contains information about all memory allocations the process
has made.

Change-Id: Ice3f039d92cc1b1cdb5a6192808441ddfdf8abfb
Signed-off-by: Jeremy Gebben <jgebben@codeaurora.org>
Signed-off-by: Rajeev Kulkarni <krajeev@codeaurora.org>
diff --git a/drivers/gpu/msm/kgsl_device.h b/drivers/gpu/msm/kgsl_device.h
index 2ca3a4f..24eb630 100644
--- a/drivers/gpu/msm/kgsl_device.h
+++ b/drivers/gpu/msm/kgsl_device.h
@@ -253,6 +253,7 @@
 	struct kgsl_pagetable *pagetable;
 	struct list_head list;
 	struct kobject kobj;
+	struct dentry *debug_root;
 
 	struct {
 		unsigned int cur;