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Commit d8f41e97 authored by Prakash Gupta's avatar Prakash Gupta Committed by Gerrit - the friendly Code Review server
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ion: add additional debug info in dmabuf exp_info 



Add heap name, tgid and comm info to dmabuf export info. This will help
aggregate allocations based of above parameters for debug purpose.

Change-Id: I5d3022ef18f22ec29a87a84d97d64964615b5856
Signed-off-by: default avatarPrakash Gupta <guptap@codeaurora.org>
parent b6072a3c

drivers/staging/android/ion/ion.c

+9 −1
Original line number Diff line number Diff line
@@ -505,6 +505,7 @@ static void ion_dma_buf_release(struct dma_buf *dmabuf) 
	struct ion_buffer *buffer = dmabuf->priv;



	_ion_buffer_destroy(buffer);

	kfree(dmabuf->exp_name);

}



static void *ion_dma_buf_kmap(struct dma_buf *dmabuf, unsigned long offset)
@@ -1047,6 +1048,7 @@ struct dma_buf *ion_alloc_dmabuf(size_t len, unsigned int heap_id_mask, 
	struct ion_heap *heap;

	DEFINE_DMA_BUF_EXPORT_INFO(exp_info);

	struct dma_buf *dmabuf;

	char task_comm[TASK_COMM_LEN];



	pr_debug("%s: len %zu heap_id_mask %u flags %x\n", __func__,

		 len, heap_id_mask, flags);
@@ -1078,14 +1080,20 @@ struct dma_buf *ion_alloc_dmabuf(size_t len, unsigned int heap_id_mask, 
	if (IS_ERR(buffer))

		return ERR_CAST(buffer);



	get_task_comm(task_comm, current->group_leader);



	exp_info.ops = &dma_buf_ops;

	exp_info.size = buffer->size;

	exp_info.flags = O_RDWR;

	exp_info.priv = buffer;

	exp_info.exp_name = kasprintf(GFP_KERNEL, "%s-%s-%d-%s", KBUILD_MODNAME,

				      heap->name, current->tgid, task_comm);



	dmabuf = dma_buf_export(&exp_info);

	if (IS_ERR(dmabuf))

	if (IS_ERR(dmabuf)) {

		_ion_buffer_destroy(buffer);

		kfree(dmabuf->exp_name);

	}



	return dmabuf;

}