linux-kernel - [PATCH 10/11] dma-buf/sync_file: bring debug back to sync file

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Date:	Tue, 26 Jan 2016 16:30:25 -0200
From:	Gustavo Padovan <gustavo@...ovan.org>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org,
	dri-devel@...ts.freedesktop.org,
	Daniel Stone <daniels@...labora.com>,
	Arve Hjønnevåg <arve@...roid.com>,
	Riley Andrews <riandrews@...roid.com>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Rob Clark <robdclark@...il.com>,
	Greg Hackmann <ghackmann@...gle.com>,
	John Harrison <John.C.Harrison@...el.com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Gustavo Padovan <gustavo.padovan@...labora.co.uk>
Subject: [PATCH 10/11] dma-buf/sync_file: bring debug back to sync file

From: Gustavo Padovan <gustavo.padovan@...labora.co.uk>

Enable reports of sync_files through <debugfs>/sync/info

Signed-off-by: Gustavo Padovan <gustavo.padovan@...labora.co.uk>
---
 drivers/dma-buf/sync_file.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/dma-buf/sync_file.c b/drivers/dma-buf/sync_file.c
index 92474dd..aa1215d 100644
--- a/drivers/dma-buf/sync_file.c
+++ b/drivers/dma-buf/sync_file.c
@@ -29,6 +29,8 @@
 #define CREATE_TRACE_POINTS
 #include <trace/events/sync_file.h>
 
+#include "sync_debug.h"
+
 static const struct file_operations sync_file_fops;
 
 static struct sync_file *sync_file_alloc(int size, const char *name)
@@ -87,6 +89,8 @@ struct sync_file *sync_file_create(const char *name, struct fence *fence)
 			       fence_check_cb_func))
 		atomic_dec(&sync_file->status);
 
+	sync_file_debug_add(sync_file);
+
 	return sync_file;
 }
 EXPORT_SYMBOL(sync_file_create);
@@ -188,6 +192,7 @@ struct sync_file *sync_file_merge(const char *name,
 		atomic_sub(num_fences - i, &sync_file->status);
 	sync_file->num_fences = i;
 
+	sync_file_debug_add(sync_file);
 	return sync_file;
 }
 EXPORT_SYMBOL(sync_file_merge);
@@ -246,6 +251,8 @@ static int sync_file_release(struct inode *inode, struct file *file)
 {
 	struct sync_file *sync_file = file->private_data;
 
+	sync_file_debug_remove(sync_file);
+
 	kref_put(&sync_file->kref, sync_file_free);
 	return 0;
 }
-- 
2.5.0