From: CMY <cmy@rock-chips.com>
Date: Mon, 30 Jun 2014 06:52:36 +0000 (+0800)
Subject: rk: ion: add caller info in snapshot if alloc failed
X-Git-Tag: firefly_0821_release~5022
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=87c0f56f9680fc403d60038647123185e4be1ae3;p=firefly-linux-kernel-4.4.55.git

rk: ion: add caller info in snapshot if alloc failed
---

diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
index 8fa98adc5175..556a3e80cdc6 100755
--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -122,7 +122,7 @@ static void ion_iommu_force_unmap(struct ion_buffer *buffer);
 #ifdef CONFIG_ION_ROCKCHIP_SNAPSHOT
 extern char *rockchip_ion_snapshot_get(unsigned *size);
 extern int rockchip_ion_snapshot_debugfs(struct dentry* root);
-static int ion_snapshot_save(struct ion_device *idev);
+static int ion_snapshot_save(struct ion_device *idev, size_t len);
 #endif
 
 bool ion_buffer_fault_user_mappings(struct ion_buffer *buffer)
@@ -522,7 +522,7 @@ struct ion_handle *ion_alloc(struct ion_client *client, size_t len,
 
 	if (IS_ERR(buffer)) {
 #ifdef CONFIG_ION_ROCKCHIP_SNAPSHOT
-		ion_snapshot_save(client->dev);
+		ion_snapshot_save(client->dev, len);
 #endif
 		return ERR_PTR(PTR_ERR(buffer));
 	}
@@ -2029,7 +2029,7 @@ static unsigned long ion_find_max_zero_area(unsigned long *map, unsigned long si
 	return max_zero_sz;
 }
 
-static int ion_snapshot_save(struct ion_device *idev)
+static int ion_snapshot_save(struct ion_device *idev, size_t len)
 {
 	static struct seq_file seqf;
 	struct ion_heap *heap;
@@ -2044,6 +2044,9 @@ static int ion_snapshot_save(struct ion_device *idev)
 	pr_debug("%s: save snapshot 0x%x@0x%lx\n", __func__, seqf.size,
 		__pa(seqf.buf));
 
+	seq_printf(&seqf, "call by comm: %s pid: %d, alloc: %uKB\n",
+		current->comm, current->pid, len>>10);
+
 	down_read(&idev->lock);
 
 	plist_for_each_entry(heap, &idev->heaps, node) {