Release 4.18 drivers/staging/android/ion/ion.c

// SPDX-License-Identifier: GPL-2.0
/*
 * drivers/staging/android/ion/ion.c
 *
 * Copyright (C) 2011 Google, Inc.
 */

#include <linux/anon_inodes.h>
#include <linux/debugfs.h>
#include <linux/device.h>
#include <linux/dma-buf.h>
#include <linux/err.h>
#include <linux/export.h>
#include <linux/file.h>
#include <linux/freezer.h>
#include <linux/fs.h>
#include <linux/idr.h>
#include <linux/kthread.h>
#include <linux/list.h>
#include <linux/memblock.h>
#include <linux/miscdevice.h>
#include <linux/mm.h>
#include <linux/mm_types.h>
#include <linux/rbtree.h>
#include <linux/sched/task.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/vmalloc.h>

#include "ion.h"


static struct ion_device *internal_dev;

static int heap_id;

/* this function should only be called while dev->lock is held */


static void ion_buffer_add(struct ion_device *dev,
			   struct ion_buffer *buffer)
{
	struct rb_node **p = &dev->buffers.rb_node;
	struct rb_node *parent = NULL;
	struct ion_buffer *entry;

	while (*p) {
		parent = *p;
		entry = rb_entry(parent, struct ion_buffer, node);

		if (buffer < entry) {
			p = &(*p)->rb_left;
		} else if (buffer > entry) {
			p = &(*p)->rb_right;
		} else {
			pr_err("%s: buffer already found.", __func__);
			BUG();
		}
	}

	rb_link_node(&buffer->node, parent, p);
	rb_insert_color(&buffer->node, &dev->buffers);
}

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/* this function should only be called while dev->lock is held */


static struct ion_buffer *ion_buffer_create(struct ion_heap *heap,
					    struct ion_device *dev,
					    unsigned long len,
					    unsigned long flags)
{
	struct ion_buffer *buffer;
	int ret;

	buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
	if (!buffer)
		return ERR_PTR(-ENOMEM);

	buffer->heap = heap;
	buffer->flags = flags;
	buffer->dev = dev;
	buffer->size = len;

	ret = heap->ops->allocate(heap, buffer, len, flags);

	if (ret) {
		if (!(heap->flags & ION_HEAP_FLAG_DEFER_FREE))
			goto err2;

		ion_heap_freelist_drain(heap, 0);
		ret = heap->ops->allocate(heap, buffer, len, flags);
		if (ret)
			goto err2;
	}

	if (!buffer->sg_table) {
		WARN_ONCE(1, "This heap needs to set the sgtable");
		ret = -EINVAL;
		goto err1;
	}

	INIT_LIST_HEAD(&buffer->attachments);
	mutex_init(&buffer->lock);
	mutex_lock(&dev->buffer_lock);
	ion_buffer_add(dev, buffer);
	mutex_unlock(&dev->buffer_lock);
	return buffer;

err1:
	heap->ops->free(buffer);
err2:
	kfree(buffer);
	return ERR_PTR(ret);
}

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Rebecca Schultz Zavin
203
84.23%
9
56.25%
Todd Android Poynor
12
4.98%
1
6.25%
Laura Abbott
10
4.15%
2
12.50%
Rohit kumar
9
3.73%
1
6.25%
Colin Cross
4
1.66%
1
6.25%
Ben Marsh
2
0.83%
1
6.25%
Quytelda Kahja
1
0.41%
1
6.25%
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241
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16
100.00%



void ion_buffer_destroy(struct ion_buffer *buffer)
{
	if (buffer->kmap_cnt > 0) {
		pr_warn_once("%s: buffer still mapped in the kernel\n",
			     __func__);
		buffer->heap->ops->unmap_kernel(buffer->heap, buffer);
	}
	buffer->heap->ops->free(buffer);
	kfree(buffer);
}

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Cho KyongHo
29
50.00%
1
20.00%
Rebecca Schultz Zavin
20
34.48%
3
60.00%
Laura Abbott
9
15.52%
1
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58
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static void _ion_buffer_destroy(struct ion_buffer *buffer)
{
	struct ion_heap *heap = buffer->heap;
	struct ion_device *dev = buffer->dev;

	mutex_lock(&dev->buffer_lock);
	rb_erase(&buffer->node, &dev->buffers);
	mutex_unlock(&dev->buffer_lock);

	if (heap->flags & ION_HEAP_FLAG_DEFER_FREE)
		ion_heap_freelist_add(heap, buffer);
	else
		ion_buffer_destroy(buffer);
}

Contributors
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Rebecca Schultz Zavin
77
97.47%
5
83.33%
Laura Abbott
2
2.53%
1
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79
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6
100.00%



static void *ion_buffer_kmap_get(struct ion_buffer *buffer)
{
	void *vaddr;

	if (buffer->kmap_cnt) {
		buffer->kmap_cnt++;
		return buffer->vaddr;
	}
	vaddr = buffer->heap->ops->map_kernel(buffer->heap, buffer);
	if (WARN_ONCE(!vaddr,
		      "heap->ops->map_kernel should return ERR_PTR on error"))
		return ERR_PTR(-EINVAL);
	if (IS_ERR(vaddr))
		return vaddr;
	buffer->vaddr = vaddr;
	buffer->kmap_cnt++;
	return vaddr;
}

Contributors
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Laura Abbott
61
66.30%
1
25.00%
Rebecca Schultz Zavin
30
32.61%
2
50.00%
Quytelda Kahja
1
1.09%
1
25.00%
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92
100.00%
4
100.00%



static void ion_buffer_kmap_put(struct ion_buffer *buffer)
{
	buffer->kmap_cnt--;
	if (!buffer->kmap_cnt) {
		buffer->heap->ops->unmap_kernel(buffer->heap, buffer);
		buffer->vaddr = NULL;
	}
}

Contributors
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Rebecca Schultz Zavin
33
71.74%
1
50.00%
Laura Abbott
13
28.26%
1
50.00%
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46
100.00%
2
100.00%



static struct sg_table *dup_sg_table(struct sg_table *table)
{
	struct sg_table *new_table;
	int ret, i;
	struct scatterlist *sg, *new_sg;

	new_table = kzalloc(sizeof(*new_table), GFP_KERNEL);
	if (!new_table)
		return ERR_PTR(-ENOMEM);

	ret = sg_alloc_table(new_table, table->nents, GFP_KERNEL);
	if (ret) {
		kfree(new_table);
		return ERR_PTR(-ENOMEM);
	}

	new_sg = new_table->sgl;
	for_each_sg(table->sgl, sg, table->nents, i) {
		memcpy(new_sg, sg, sizeof(*sg));
		new_sg->dma_address = 0;
		new_sg = sg_next(new_sg);
	}

	return new_table;
}

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Laura Abbott
80
59.70%
1
20.00%
Rebecca Schultz Zavin
52
38.81%
2
40.00%
Ben Marsh
1
0.75%
1
20.00%
Liam Mark
1
0.75%
1
20.00%
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134
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static void free_duped_table(struct sg_table *table)
{
	sg_free_table(table);
	kfree(table);
}

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Laura Abbott
15
71.43%
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Rebecca Schultz Zavin
6
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1
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21
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struct ion_dma_buf_attachment {
	
struct device *dev;
	
struct sg_table *table;
	
struct list_head list;
};



static int ion_dma_buf_attach(struct dma_buf *dmabuf, struct device *dev,
			      struct dma_buf_attachment *attachment)
{
	struct ion_dma_buf_attachment *a;
	struct sg_table *table;
	struct ion_buffer *buffer = dmabuf->priv;

	a = kzalloc(sizeof(*a), GFP_KERNEL);
	if (!a)
		return -ENOMEM;

	table = dup_sg_table(buffer->sg_table);
	if (IS_ERR(table)) {
		kfree(a);
		return -ENOMEM;
	}

	a->table = table;
	a->dev = dev;
	INIT_LIST_HEAD(&a->list);

	attachment->priv = a;

	mutex_lock(&buffer->lock);
	list_add(&a->list, &buffer->attachments);
	mutex_unlock(&buffer->lock);

	return 0;
}

Contributors
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Laura Abbott
94
63.95%
1
20.00%
Rebecca Schultz Zavin
48
32.65%
3
60.00%
Colin Cross
5
3.40%
1
20.00%
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147
100.00%
5
100.00%



static void ion_dma_buf_detatch(struct dma_buf *dmabuf,
				struct dma_buf_attachment *attachment)
{
	struct ion_dma_buf_attachment *a = attachment->priv;
	struct ion_buffer *buffer = dmabuf->priv;

	free_duped_table(a->table);
	mutex_lock(&buffer->lock);
	list_del(&a->list);
	mutex_unlock(&buffer->lock);

	kfree(a);
}

Contributors
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CommitProp
Laura Abbott
36
51.43%
1
25.00%
Colin Cross
20
28.57%
1
25.00%
Rebecca Schultz Zavin
10
14.29%
1
25.00%
EunTaik Lee
4
5.71%
1
25.00%
Total
70
100.00%
4
100.00%



static struct sg_table *ion_map_dma_buf(struct dma_buf_attachment *attachment,
					enum dma_data_direction direction)
{
	struct ion_dma_buf_attachment *a = attachment->priv;
	struct sg_table *table;

	table = a->table;

	if (!dma_map_sg(attachment->dev, table->sgl, table->nents,
			direction))
		return ERR_PTR(-ENOMEM);

	return table;
}

Contributors
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Laura Abbott
28
41.79%
1
14.29%
Colin Cross
15
22.39%
3
42.86%
Rebecca Schultz Zavin
15
22.39%
1
14.29%
Archit Taneja
5
7.46%
1
14.29%
EunTaik Lee
4
5.97%
1
14.29%
Total
67
100.00%
7
100.00%



static void ion_unmap_dma_buf(struct dma_buf_attachment *attachment,
			      struct sg_table *table,
			      enum dma_data_direction direction)
{
	dma_unmap_sg(attachment->dev, table->sgl, table->nents, direction);
}

Contributors
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Laura Abbott
18
48.65%
1
20.00%
Rebecca Schultz Zavin
12
32.43%
1
20.00%
Colin Cross
4
10.81%
2
40.00%
EunTaik Lee
3
8.11%
1
20.00%
Total
37
100.00%
5
100.00%



static int ion_mmap(struct dma_buf *dmabuf, struct vm_area_struct *vma)
{
	struct ion_buffer *buffer = dmabuf->priv;
	int ret = 0;

	if (!buffer->heap->ops->map_user) {
		pr_err("%s: this heap does not define a method for mapping to userspace\n",
		       __func__);
		return -EINVAL;
	}

	if (!(buffer->flags & ION_FLAG_CACHED))
		vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);

	mutex_lock(&buffer->lock);
	/* now map it to userspace */
	ret = buffer->heap->ops->map_user(buffer->heap, buffer, vma);
	mutex_unlock(&buffer->lock);

	if (ret)
		pr_err("%s: failure mapping buffer to userspace\n",
		       __func__);

	return ret;
}

Contributors
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Laura Abbott
66
52.38%
1
16.67%
Rebecca Schultz Zavin
43
34.13%
1
16.67%
Colin Cross
17
13.49%
4
66.67%
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126
100.00%
6
100.00%



static void ion_dma_buf_release(struct dma_buf *dmabuf)
{
	struct ion_buffer *buffer = dmabuf->priv;

	_ion_buffer_destroy(buffer);
}

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Rebecca Schultz Zavin
15
60.00%
1
33.33%
Laura Abbott
9
36.00%
1
33.33%
Colin Cross
1
4.00%
1
33.33%
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25
100.00%
3
100.00%



static void *ion_dma_buf_kmap(struct dma_buf *dmabuf, unsigned long offset)
{
	struct ion_buffer *buffer = dmabuf->priv;

	return buffer->vaddr + offset * PAGE_SIZE;
}

Contributors
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Rebecca Schultz Zavin
17
50.00%
2
40.00%
Laura Abbott
15
44.12%
1
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Colin Cross
1
2.94%
1
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Cho KyongHo
1
2.94%
1
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34
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5
100.00%



static void ion_dma_buf_kunmap(struct dma_buf *dmabuf, unsigned long offset,
			       void *ptr)
{
}

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Laura Abbott
9
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1
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Rebecca Schultz Zavin
8
44.44%
3
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EunTaik Lee
1
5.56%
1
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18
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static int ion_dma_buf_begin_cpu_access(struct dma_buf *dmabuf,
					enum dma_data_direction direction)
{
	struct ion_buffer *buffer = dmabuf->priv;
	void *vaddr;
	struct ion_dma_buf_attachment *a;
	int ret = 0;

	/*
         * TODO: Move this elsewhere because we don't always need a vaddr
         */
	if (buffer->heap->ops->map_kernel) {
		mutex_lock(&buffer->lock);
		vaddr = ion_buffer_kmap_get(buffer);
		if (IS_ERR(vaddr)) {
			ret = PTR_ERR(vaddr);
			goto unlock;
		}
		mutex_unlock(&buffer->lock);
	}

	mutex_lock(&buffer->lock);
	list_for_each_entry(a, &buffer->attachments, list) {
		dma_sync_sg_for_cpu(a->dev, a->table->sgl, a->table->nents,
				    direction);
	}

unlock:
	mutex_unlock(&buffer->lock);
	return ret;
}

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Laura Abbott
67
46.21%
1
11.11%
Rebecca Schultz Zavin
40
27.59%
3
33.33%
Nathan Chancellor
27
18.62%
1
11.11%
Colin Cross
6
4.14%
2
22.22%
Cho KyongHo
4
2.76%
1
11.11%
Sushmita Susheelendra
1
0.69%
1
11.11%
Total
145
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9
100.00%



static int ion_dma_buf_end_cpu_access(struct dma_buf *dmabuf,
				      enum dma_data_direction direction)
{
	struct ion_buffer *buffer = dmabuf->priv;
	struct ion_dma_buf_attachment *a;

	if (buffer->heap->ops->map_kernel) {
		mutex_lock(&buffer->lock);
		ion_buffer_kmap_put(buffer);
		mutex_unlock(&buffer->lock);
	}

	mutex_lock(&buffer->lock);
	list_for_each_entry(a, &buffer->attachments, list) {
		dma_sync_sg_for_device(a->dev, a->table->sgl, a->table->nents,
				       direction);
	}
	mutex_unlock(&buffer->lock);

	return 0;
}

Contributors
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Laura Abbott
56
50.00%
2
33.33%
Rebecca Schultz Zavin
46
41.07%
1
16.67%
Colin Cross
7
6.25%
1
16.67%
Cho KyongHo
2
1.79%
1
16.67%
Sushmita Susheelendra
1
0.89%
1
16.67%
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6
100.00%


static const struct dma_buf_ops dma_buf_ops = {
	.map_dma_buf = ion_map_dma_buf,
	.unmap_dma_buf = ion_unmap_dma_buf,
	.mmap = ion_mmap,
	.release = ion_dma_buf_release,
	.attach = ion_dma_buf_attach,
	.detach = ion_dma_buf_detatch,
	.begin_cpu_access = ion_dma_buf_begin_cpu_access,
	.end_cpu_access = ion_dma_buf_end_cpu_access,
	.map_atomic = ion_dma_buf_kmap,
	.unmap_atomic = ion_dma_buf_kunmap,
	.map = ion_dma_buf_kmap,
	.unmap = ion_dma_buf_kunmap,
};



int ion_alloc(size_t len, unsigned int heap_id_mask, unsigned int flags)
{
	struct ion_device *dev = internal_dev;
	struct ion_buffer *buffer = NULL;
	struct ion_heap *heap;
	DEFINE_DMA_BUF_EXPORT_INFO(exp_info);
	int fd;
	struct dma_buf *dmabuf;

	pr_debug("%s: len %zu heap_id_mask %u flags %x\n", __func__,
		 len, heap_id_mask, flags);
	/*
         * traverse the list of heaps available in this system in priority
         * order.  If the heap type is supported by the client, and matches the
         * request of the caller allocate from it.  Repeat until allocate has
         * succeeded or all heaps have been tried
         */
	len = PAGE_ALIGN(len);

	if (!len)
		return -EINVAL;

	down_read(&dev->lock);
	plist_for_each_entry(heap, &dev->heaps, node) {
		/* if the caller didn't specify this heap id */
		if (!((1 << heap->id) & heap_id_mask))
			continue;
		buffer = ion_buffer_create(heap, dev, len, flags);
		if (!IS_ERR(buffer))
			break;
	}
	up_read(&dev->lock);

	if (!buffer)
		return -ENODEV;

	if (IS_ERR(buffer))
		return PTR_ERR(buffer);

	exp_info.ops = &dma_buf_ops;
	exp_info.size = buffer->size;
	exp_info.flags = O_RDWR;
	exp_info.priv = buffer;

	dmabuf = dma_buf_export(&exp_info);
	if (IS_ERR(dmabuf)) {
		_ion_buffer_destroy(buffer);
		return PTR_ERR(dmabuf);
	}

	fd = dma_buf_fd(dmabuf, O_CLOEXEC);
	if (fd < 0)
		dma_buf_put(dmabuf);

	return fd;
}

Contributors
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Laura Abbott
130
53.50%
2
22.22%
Rebecca Schultz Zavin
110
45.27%
4
44.44%
Colin Cross
1
0.41%
1
11.11%
Rom Lemarchand
1
0.41%
1
11.11%
Quytelda Kahja
1
0.41%
1
11.11%
Total
243
100.00%
9
100.00%



int ion_query_heaps(struct ion_heap_query *query)
{
	struct ion_device *dev = internal_dev;
	struct ion_heap_data __user *buffer = u64_to_user_ptr(query->heaps);
	int ret = -EINVAL, cnt = 0, max_cnt;
	struct ion_heap *heap;
	struct ion_heap_data hdata;

	memset(&hdata, 0, sizeof(hdata));

	down_read(&dev->lock);
	if (!buffer) {
		query->cnt = dev->heap_cnt;
		ret = 0;
		goto out;
	}

	if (query->cnt <= 0)
		goto out;

	max_cnt = query->cnt;

	plist_for_each_entry(heap, &dev->heaps, node) {
		strncpy(hdata.name, heap->name, MAX_HEAP_NAME);
		hdata.name[sizeof(hdata.name) - 1] = '\0';
		hdata.type = heap->type;
		hdata.heap_id = heap->id;

		if (copy_to_user(&buffer[cnt], &hdata, sizeof(hdata))) {
			ret = -EFAULT;
			goto out;
		}

		cnt++;
		if (cnt >= max_cnt)
			break;
	}

	query->cnt = cnt;
	ret = 0;
out:
	up_read(&dev->lock);
	return ret;
}

Contributors
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Laura Abbott
128
56.14%
2
22.22%
Rebecca Schultz Zavin
94
41.23%
5
55.56%
Benjamin Gaignard
3
1.32%
1
11.11%
Colin Cross
3
1.32%
1
11.11%
Total
228
100.00%
9
100.00%


static const struct file_operations ion_fops = {
	.owner          = THIS_MODULE,
	.unlocked_ioctl = ion_ioctl,
#ifdef CONFIG_COMPAT
	.compat_ioctl	= ion_ioctl,
#endif
};



static int debug_shrink_set(void *data, u64 val)
{
	struct ion_heap *heap = data;
	struct shrink_control sc;
	int objs;

	sc.gfp_mask = GFP_HIGHUSER;
	sc.nr_to_scan = val;

	if (!val) {
		objs = heap->shrinker.count_objects(&heap->shrinker, &sc);
		sc.nr_to_scan = objs;
	}

	heap->shrinker.scan_objects(&heap->shrinker, &sc);
	return 0;
}

Contributors
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Rebecca Schultz Zavin
81
93.10%
2
50.00%
Gioh Kim
5
5.75%
1
25.00%
Derek Yerger
1
1.15%
1
25.00%
Total
87
100.00%
4
100.00%



static int debug_shrink_get(void *data, u64 *val)
{
	struct ion_heap *heap = data;
	struct shrink_control sc;
	int objs;

	sc.gfp_mask = GFP_HIGHUSER;
	sc.nr_to_scan = 0;

	objs = heap->shrinker.count_objects(&heap->shrinker, &sc);
	*val = objs;
	return 0;
}

Contributors
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Rebecca Schultz Zavin
63
96.92%
2
50.00%
Derek Yerger
1
1.54%
1
25.00%
Gioh Kim
1
1.54%
1
25.00%
Total
65
100.00%
4
100.00%

DEFINE_SIMPLE_ATTRIBUTE(debug_shrink_fops, debug_shrink_get,
			debug_shrink_set, "%llu\n");



void ion_device_add_heap(struct ion_heap *heap)
{
	struct ion_device *dev = internal_dev;
	int ret;

	if (!heap->ops->allocate || !heap->ops->free)
		pr_err("%s: can not add heap with invalid ops struct.\n",
		       __func__);

	spin_lock_init(&heap->free_lock);
	heap->free_list_size = 0;

	if (heap->flags & ION_HEAP_FLAG_DEFER_FREE)
		ion_heap_init_deferred_free(heap);

	if ((heap->flags & ION_HEAP_FLAG_DEFER_FREE) || heap->ops->shrink) {
		ret = ion_heap_init_shrinker(heap);
		if (ret)
			pr_err("%s: Failed to register shrinker\n", __func__);
	}

	heap->dev = dev;
	down_write(&dev->lock);
	heap->id = heap_id++;
	/*
         * use negative heap->id to reverse the priority -- when traversing
         * the list later attempt higher id numbers first
         */
	plist_node_init(&heap->node, -heap->id);
	plist_add(&heap->node, &dev->heaps);

	if (heap->shrinker.count_objects && heap->shrinker.scan_objects) {
		char debug_name[64];

		snprintf(debug_name, 64, "%s_shrink", heap->name);
		debugfs_create_file(debug_name, 0644, dev->debug_root,
				    heap, &debug_shrink_fops);
	}

	dev->heap_cnt++;
	up_write(&dev->lock);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Rebecca Schultz Zavin
136
62.39%
6
40.00%
Colin Cross
21
9.63%
1
6.67%
Laura Abbott
19
8.72%
3
20.00%
Xiongwei Song
18
8.26%
1
6.67%
Mitchel Humpherys
16
7.34%
2
13.33%
Gioh Kim
7
3.21%
1
6.67%
Sriram Raghunathan
1
0.46%
1
6.67%
Total
218
100.00%
15
100.00%

EXPORT_SYMBOL(ion_device_add_heap);



static int ion_device_create(void)
{
	struct ion_device *idev;
	int ret;

	idev = kzalloc(sizeof(*idev), GFP_KERNEL);
	if (!idev)
		return -ENOMEM;

	idev->dev.minor = MISC_DYNAMIC_MINOR;
	idev->dev.name = "ion";
	idev->dev.fops = &ion_fops;
	idev->dev.parent = NULL;
	ret = misc_register(&idev->dev);
	if (ret) {
		pr_err("ion: failed to register misc device.\n");
		kfree(idev);
		return ret;
	}

	idev->debug_root = debugfs_create_dir("ion", NULL);
	idev->buffers = RB_ROOT;
	mutex_init(&idev->buffer_lock);
	init_rwsem(&idev->lock);
	plist_head_init(&idev->heaps);
	internal_dev = idev;
	return 0;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Rebecca Schultz Zavin
133
89.86%
3
33.33%
Shailendra Verma
5
3.38%
1
11.11%
Laura Abbott
4
2.70%
2
22.22%
Neil Zhang
3
2.03%
1
11.11%
Ben Marsh
2
1.35%
1
11.11%
Paolo Cretaro
1
0.68%
1
11.11%
Total
148
100.00%
9
100.00%

subsys_initcall(ion_device_create);
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Rebecca Schultz Zavin
1513
54.02%
17
26.15%
Laura Abbott
959
34.24%
10
15.38%
Colin Cross
107
3.82%
8
12.31%
Cho KyongHo
36
1.29%
1
1.54%
Nathan Chancellor
27
0.96%
1
1.54%
Benjamin Gaignard
25
0.89%
2
3.08%
Xiongwei Song
18
0.64%
1
1.54%
Mitchel Humpherys
16
0.57%
2
3.08%
Gioh Kim
13
0.46%
1
1.54%
EunTaik Lee
12
0.43%
1
1.54%
Todd Android Poynor
12
0.43%
1
1.54%
Paul Gortmaker
9
0.32%
1
1.54%
Rohit kumar
9
0.32%
1
1.54%
Shailendra Verma
5
0.18%
1
1.54%
Archit Taneja
5
0.18%
1
1.54%
Ben Marsh
5
0.18%
1
1.54%
Linus Torvalds
4
0.14%
1
1.54%
Rom Lemarchand
4
0.14%
1
1.54%
Neil Zhang
3
0.11%
1
1.54%
Quytelda Kahja
3
0.11%
1
1.54%
Sushmita Susheelendra
2
0.07%
1
1.54%
Greg Kroah-Hartman
2
0.07%
2
3.08%
Derek Yerger
2
0.07%
1
1.54%
Ingo Molnar
2
0.07%
1
1.54%
JP Abgrall
2
0.07%
1
1.54%
Sachin Kamat
2
0.07%
1
1.54%
Liam Mark
1
0.04%
1
1.54%
Paolo Cretaro
1
0.04%
1
1.54%
Dan Carpenter
1
0.04%
1
1.54%
Sriram Raghunathan
1
0.04%
1
1.54%
Total
2801
100.00%
65
100.00%
Directory: drivers/staging/android/ion

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