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authorMaarten Lankhorst <maarten.lankhorst@canonical.com>2014-07-01 12:57:08 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-07-08 10:51:06 -0700
commit35fac7e305dc5e0bd1e52f2505944674337de57c (patch)
treec29dd4051f7d557bc812cf459108412c7174974a /drivers/base
parent650f81d40957cf5bc07de1210591339c6242a361 (diff)
dma-buf: move to drivers/dma-buf
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Acked-by: Sumit Semwal <sumit.semwal@linaro.org> Acked-by: Daniel Vetter <daniel@ffwll.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/Makefile1
-rw-r--r--drivers/base/dma-buf.c743
-rw-r--r--drivers/base/reservation.c39
3 files changed, 0 insertions, 783 deletions
diff --git a/drivers/base/Makefile b/drivers/base/Makefile
index 04b314e0fa51..4aab26ec0292 100644
--- a/drivers/base/Makefile
+++ b/drivers/base/Makefile
@@ -10,7 +10,6 @@ obj-$(CONFIG_DMA_CMA) += dma-contiguous.o
obj-y += power/
obj-$(CONFIG_HAS_DMA) += dma-mapping.o
obj-$(CONFIG_HAVE_GENERIC_DMA_COHERENT) += dma-coherent.o
-obj-$(CONFIG_DMA_SHARED_BUFFER) += dma-buf.o reservation.o
obj-$(CONFIG_ISA) += isa.o
obj-$(CONFIG_FW_LOADER) += firmware_class.o
obj-$(CONFIG_NUMA) += node.o
diff --git a/drivers/base/dma-buf.c b/drivers/base/dma-buf.c
deleted file mode 100644
index 840c7fa80983..000000000000
--- a/drivers/base/dma-buf.c
+++ /dev/null
@@ -1,743 +0,0 @@
-/*
- * Framework for buffer objects that can be shared across devices/subsystems.
- *
- * Copyright(C) 2011 Linaro Limited. All rights reserved.
- * Author: Sumit Semwal <sumit.semwal@ti.com>
- *
- * Many thanks to linaro-mm-sig list, and specially
- * Arnd Bergmann <arnd@arndb.de>, Rob Clark <rob@ti.com> and
- * Daniel Vetter <daniel@ffwll.ch> for their support in creation and
- * refining of this idea.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <linux/fs.h>
-#include <linux/slab.h>
-#include <linux/dma-buf.h>
-#include <linux/anon_inodes.h>
-#include <linux/export.h>
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
-
-static inline int is_dma_buf_file(struct file *);
-
-struct dma_buf_list {
- struct list_head head;
- struct mutex lock;
-};
-
-static struct dma_buf_list db_list;
-
-static int dma_buf_release(struct inode *inode, struct file *file)
-{
- struct dma_buf *dmabuf;
-
- if (!is_dma_buf_file(file))
- return -EINVAL;
-
- dmabuf = file->private_data;
-
- BUG_ON(dmabuf->vmapping_counter);
-
- dmabuf->ops->release(dmabuf);
-
- mutex_lock(&db_list.lock);
- list_del(&dmabuf->list_node);
- mutex_unlock(&db_list.lock);
-
- kfree(dmabuf);
- return 0;
-}
-
-static int dma_buf_mmap_internal(struct file *file, struct vm_area_struct *vma)
-{
- struct dma_buf *dmabuf;
-
- if (!is_dma_buf_file(file))
- return -EINVAL;
-
- dmabuf = file->private_data;
-
- /* check for overflowing the buffer's size */
- if (vma->vm_pgoff + ((vma->vm_end - vma->vm_start) >> PAGE_SHIFT) >
- dmabuf->size >> PAGE_SHIFT)
- return -EINVAL;
-
- return dmabuf->ops->mmap(dmabuf, vma);
-}
-
-static loff_t dma_buf_llseek(struct file *file, loff_t offset, int whence)
-{
- struct dma_buf *dmabuf;
- loff_t base;
-
- if (!is_dma_buf_file(file))
- return -EBADF;
-
- dmabuf = file->private_data;
-
- /* only support discovering the end of the buffer,
- but also allow SEEK_SET to maintain the idiomatic
- SEEK_END(0), SEEK_CUR(0) pattern */
- if (whence == SEEK_END)
- base = dmabuf->size;
- else if (whence == SEEK_SET)
- base = 0;
- else
- return -EINVAL;
-
- if (offset != 0)
- return -EINVAL;
-
- return base + offset;
-}
-
-static const struct file_operations dma_buf_fops = {
- .release = dma_buf_release,
- .mmap = dma_buf_mmap_internal,
- .llseek = dma_buf_llseek,
-};
-
-/*
- * is_dma_buf_file - Check if struct file* is associated with dma_buf
- */
-static inline int is_dma_buf_file(struct file *file)
-{
- return file->f_op == &dma_buf_fops;
-}
-
-/**
- * dma_buf_export_named - Creates a new dma_buf, and associates an anon file
- * with this buffer, so it can be exported.
- * Also connect the allocator specific data and ops to the buffer.
- * Additionally, provide a name string for exporter; useful in debugging.
- *
- * @priv: [in] Attach private data of allocator to this buffer
- * @ops: [in] Attach allocator-defined dma buf ops to the new buffer.
- * @size: [in] Size of the buffer
- * @flags: [in] mode flags for the file.
- * @exp_name: [in] name of the exporting module - useful for debugging.
- *
- * Returns, on success, a newly created dma_buf object, which wraps the
- * supplied private data and operations for dma_buf_ops. On either missing
- * ops, or error in allocating struct dma_buf, will return negative error.
- *
- */
-struct dma_buf *dma_buf_export_named(void *priv, const struct dma_buf_ops *ops,
- size_t size, int flags, const char *exp_name)
-{
- struct dma_buf *dmabuf;
- struct file *file;
-
- if (WARN_ON(!priv || !ops
- || !ops->map_dma_buf
- || !ops->unmap_dma_buf
- || !ops->release
- || !ops->kmap_atomic
- || !ops->kmap
- || !ops->mmap)) {
- return ERR_PTR(-EINVAL);
- }
-
- dmabuf = kzalloc(sizeof(struct dma_buf), GFP_KERNEL);
- if (dmabuf == NULL)
- return ERR_PTR(-ENOMEM);
-
- dmabuf->priv = priv;
- dmabuf->ops = ops;
- dmabuf->size = size;
- dmabuf->exp_name = exp_name;
-
- file = anon_inode_getfile("dmabuf", &dma_buf_fops, dmabuf, flags);
- if (IS_ERR(file)) {
- kfree(dmabuf);
- return ERR_CAST(file);
- }
-
- file->f_mode |= FMODE_LSEEK;
- dmabuf->file = file;
-
- mutex_init(&dmabuf->lock);
- INIT_LIST_HEAD(&dmabuf->attachments);
-
- mutex_lock(&db_list.lock);
- list_add(&dmabuf->list_node, &db_list.head);
- mutex_unlock(&db_list.lock);
-
- return dmabuf;
-}
-EXPORT_SYMBOL_GPL(dma_buf_export_named);
-
-
-/**
- * dma_buf_fd - returns a file descriptor for the given dma_buf
- * @dmabuf: [in] pointer to dma_buf for which fd is required.
- * @flags: [in] flags to give to fd
- *
- * On success, returns an associated 'fd'. Else, returns error.
- */
-int dma_buf_fd(struct dma_buf *dmabuf, int flags)
-{
- int fd;
-
- if (!dmabuf || !dmabuf->file)
- return -EINVAL;
-
- fd = get_unused_fd_flags(flags);
- if (fd < 0)
- return fd;
-
- fd_install(fd, dmabuf->file);
-
- return fd;
-}
-EXPORT_SYMBOL_GPL(dma_buf_fd);
-
-/**
- * dma_buf_get - returns the dma_buf structure related to an fd
- * @fd: [in] fd associated with the dma_buf to be returned
- *
- * On success, returns the dma_buf structure associated with an fd; uses
- * file's refcounting done by fget to increase refcount. returns ERR_PTR
- * otherwise.
- */
-struct dma_buf *dma_buf_get(int fd)
-{
- struct file *file;
-
- file = fget(fd);
-
- if (!file)
- return ERR_PTR(-EBADF);
-
- if (!is_dma_buf_file(file)) {
- fput(file);
- return ERR_PTR(-EINVAL);
- }
-
- return file->private_data;
-}
-EXPORT_SYMBOL_GPL(dma_buf_get);
-
-/**
- * dma_buf_put - decreases refcount of the buffer
- * @dmabuf: [in] buffer to reduce refcount of
- *
- * Uses file's refcounting done implicitly by fput()
- */
-void dma_buf_put(struct dma_buf *dmabuf)
-{
- if (WARN_ON(!dmabuf || !dmabuf->file))
- return;
-
- fput(dmabuf->file);
-}
-EXPORT_SYMBOL_GPL(dma_buf_put);
-
-/**
- * dma_buf_attach - Add the device to dma_buf's attachments list; optionally,
- * calls attach() of dma_buf_ops to allow device-specific attach functionality
- * @dmabuf: [in] buffer to attach device to.
- * @dev: [in] device to be attached.
- *
- * Returns struct dma_buf_attachment * for this attachment; returns ERR_PTR on
- * error.
- */
-struct dma_buf_attachment *dma_buf_attach(struct dma_buf *dmabuf,
- struct device *dev)
-{
- struct dma_buf_attachment *attach;
- int ret;
-
- if (WARN_ON(!dmabuf || !dev))
- return ERR_PTR(-EINVAL);
-
- attach = kzalloc(sizeof(struct dma_buf_attachment), GFP_KERNEL);
- if (attach == NULL)
- return ERR_PTR(-ENOMEM);
-
- attach->dev = dev;
- attach->dmabuf = dmabuf;
-
- mutex_lock(&dmabuf->lock);
-
- if (dmabuf->ops->attach) {
- ret = dmabuf->ops->attach(dmabuf, dev, attach);
- if (ret)
- goto err_attach;
- }
- list_add(&attach->node, &dmabuf->attachments);
-
- mutex_unlock(&dmabuf->lock);
- return attach;
-
-err_attach:
- kfree(attach);
- mutex_unlock(&dmabuf->lock);
- return ERR_PTR(ret);
-}
-EXPORT_SYMBOL_GPL(dma_buf_attach);
-
-/**
- * dma_buf_detach - Remove the given attachment from dmabuf's attachments list;
- * optionally calls detach() of dma_buf_ops for device-specific detach
- * @dmabuf: [in] buffer to detach from.
- * @attach: [in] attachment to be detached; is free'd after this call.
- *
- */
-void dma_buf_detach(struct dma_buf *dmabuf, struct dma_buf_attachment *attach)
-{
- if (WARN_ON(!dmabuf || !attach))
- return;
-
- mutex_lock(&dmabuf->lock);
- list_del(&attach->node);
- if (dmabuf->ops->detach)
- dmabuf->ops->detach(dmabuf, attach);
-
- mutex_unlock(&dmabuf->lock);
- kfree(attach);
-}
-EXPORT_SYMBOL_GPL(dma_buf_detach);
-
-/**
- * dma_buf_map_attachment - Returns the scatterlist table of the attachment;
- * mapped into _device_ address space. Is a wrapper for map_dma_buf() of the
- * dma_buf_ops.
- * @attach: [in] attachment whose scatterlist is to be returned
- * @direction: [in] direction of DMA transfer
- *
- * Returns sg_table containing the scatterlist to be returned; returns ERR_PTR
- * on error.
- */
-struct sg_table *dma_buf_map_attachment(struct dma_buf_attachment *attach,
- enum dma_data_direction direction)
-{
- struct sg_table *sg_table = ERR_PTR(-EINVAL);
-
- might_sleep();
-
- if (WARN_ON(!attach || !attach->dmabuf))
- return ERR_PTR(-EINVAL);
-
- sg_table = attach->dmabuf->ops->map_dma_buf(attach, direction);
- if (!sg_table)
- sg_table = ERR_PTR(-ENOMEM);
-
- return sg_table;
-}
-EXPORT_SYMBOL_GPL(dma_buf_map_attachment);
-
-/**
- * dma_buf_unmap_attachment - unmaps and decreases usecount of the buffer;might
- * deallocate the scatterlist associated. Is a wrapper for unmap_dma_buf() of
- * dma_buf_ops.
- * @attach: [in] attachment to unmap buffer from
- * @sg_table: [in] scatterlist info of the buffer to unmap
- * @direction: [in] direction of DMA transfer
- *
- */
-void dma_buf_unmap_attachment(struct dma_buf_attachment *attach,
- struct sg_table *sg_table,
- enum dma_data_direction direction)
-{
- might_sleep();
-
- if (WARN_ON(!attach || !attach->dmabuf || !sg_table))
- return;
-
- attach->dmabuf->ops->unmap_dma_buf(attach, sg_table,
- direction);
-}
-EXPORT_SYMBOL_GPL(dma_buf_unmap_attachment);
-
-
-/**
- * dma_buf_begin_cpu_access - Must be called before accessing a dma_buf from the
- * cpu in the kernel context. Calls begin_cpu_access to allow exporter-specific
- * preparations. Coherency is only guaranteed in the specified range for the
- * specified access direction.
- * @dmabuf: [in] buffer to prepare cpu access for.
- * @start: [in] start of range for cpu access.
- * @len: [in] length of range for cpu access.
- * @direction: [in] length of range for cpu access.
- *
- * Can return negative error values, returns 0 on success.
- */
-int dma_buf_begin_cpu_access(struct dma_buf *dmabuf, size_t start, size_t len,
- enum dma_data_direction direction)
-{
- int ret = 0;
-
- if (WARN_ON(!dmabuf))
- return -EINVAL;
-
- if (dmabuf->ops->begin_cpu_access)
- ret = dmabuf->ops->begin_cpu_access(dmabuf, start, len, direction);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(dma_buf_begin_cpu_access);
-
-/**
- * dma_buf_end_cpu_access - Must be called after accessing a dma_buf from the
- * cpu in the kernel context. Calls end_cpu_access to allow exporter-specific
- * actions. Coherency is only guaranteed in the specified range for the
- * specified access direction.
- * @dmabuf: [in] buffer to complete cpu access for.
- * @start: [in] start of range for cpu access.
- * @len: [in] length of range for cpu access.
- * @direction: [in] length of range for cpu access.
- *
- * This call must always succeed.
- */
-void dma_buf_end_cpu_access(struct dma_buf *dmabuf, size_t start, size_t len,
- enum dma_data_direction direction)
-{
- WARN_ON(!dmabuf);
-
- if (dmabuf->ops->end_cpu_access)
- dmabuf->ops->end_cpu_access(dmabuf, start, len, direction);
-}
-EXPORT_SYMBOL_GPL(dma_buf_end_cpu_access);
-
-/**
- * dma_buf_kmap_atomic - Map a page of the buffer object into kernel address
- * space. The same restrictions as for kmap_atomic and friends apply.
- * @dmabuf: [in] buffer to map page from.
- * @page_num: [in] page in PAGE_SIZE units to map.
- *
- * This call must always succeed, any necessary preparations that might fail
- * need to be done in begin_cpu_access.
- */
-void *dma_buf_kmap_atomic(struct dma_buf *dmabuf, unsigned long page_num)
-{
- WARN_ON(!dmabuf);
-
- return dmabuf->ops->kmap_atomic(dmabuf, page_num);
-}
-EXPORT_SYMBOL_GPL(dma_buf_kmap_atomic);
-
-/**
- * dma_buf_kunmap_atomic - Unmap a page obtained by dma_buf_kmap_atomic.
- * @dmabuf: [in] buffer to unmap page from.
- * @page_num: [in] page in PAGE_SIZE units to unmap.
- * @vaddr: [in] kernel space pointer obtained from dma_buf_kmap_atomic.
- *
- * This call must always succeed.
- */
-void dma_buf_kunmap_atomic(struct dma_buf *dmabuf, unsigned long page_num,
- void *vaddr)
-{
- WARN_ON(!dmabuf);
-
- if (dmabuf->ops->kunmap_atomic)
- dmabuf->ops->kunmap_atomic(dmabuf, page_num, vaddr);
-}
-EXPORT_SYMBOL_GPL(dma_buf_kunmap_atomic);
-
-/**
- * dma_buf_kmap - Map a page of the buffer object into kernel address space. The
- * same restrictions as for kmap and friends apply.
- * @dmabuf: [in] buffer to map page from.
- * @page_num: [in] page in PAGE_SIZE units to map.
- *
- * This call must always succeed, any necessary preparations that might fail
- * need to be done in begin_cpu_access.
- */
-void *dma_buf_kmap(struct dma_buf *dmabuf, unsigned long page_num)
-{
- WARN_ON(!dmabuf);
-
- return dmabuf->ops->kmap(dmabuf, page_num);
-}
-EXPORT_SYMBOL_GPL(dma_buf_kmap);
-
-/**
- * dma_buf_kunmap - Unmap a page obtained by dma_buf_kmap.
- * @dmabuf: [in] buffer to unmap page from.
- * @page_num: [in] page in PAGE_SIZE units to unmap.
- * @vaddr: [in] kernel space pointer obtained from dma_buf_kmap.
- *
- * This call must always succeed.
- */
-void dma_buf_kunmap(struct dma_buf *dmabuf, unsigned long page_num,
- void *vaddr)
-{
- WARN_ON(!dmabuf);
-
- if (dmabuf->ops->kunmap)
- dmabuf->ops->kunmap(dmabuf, page_num, vaddr);
-}
-EXPORT_SYMBOL_GPL(dma_buf_kunmap);
-
-
-/**
- * dma_buf_mmap - Setup up a userspace mmap with the given vma
- * @dmabuf: [in] buffer that should back the vma
- * @vma: [in] vma for the mmap
- * @pgoff: [in] offset in pages where this mmap should start within the
- * dma-buf buffer.
- *
- * This function adjusts the passed in vma so that it points at the file of the
- * dma_buf operation. It also adjusts the starting pgoff and does bounds
- * checking on the size of the vma. Then it calls the exporters mmap function to
- * set up the mapping.
- *
- * Can return negative error values, returns 0 on success.
- */
-int dma_buf_mmap(struct dma_buf *dmabuf, struct vm_area_struct *vma,
- unsigned long pgoff)
-{
- struct file *oldfile;
- int ret;
-
- if (WARN_ON(!dmabuf || !vma))
- return -EINVAL;
-
- /* check for offset overflow */
- if (pgoff + ((vma->vm_end - vma->vm_start) >> PAGE_SHIFT) < pgoff)
- return -EOVERFLOW;
-
- /* check for overflowing the buffer's size */
- if (pgoff + ((vma->vm_end - vma->vm_start) >> PAGE_SHIFT) >
- dmabuf->size >> PAGE_SHIFT)
- return -EINVAL;
-
- /* readjust the vma */
- get_file(dmabuf->file);
- oldfile = vma->vm_file;
- vma->vm_file = dmabuf->file;
- vma->vm_pgoff = pgoff;
-
- ret = dmabuf->ops->mmap(dmabuf, vma);
- if (ret) {
- /* restore old parameters on failure */
- vma->vm_file = oldfile;
- fput(dmabuf->file);
- } else {
- if (oldfile)
- fput(oldfile);
- }
- return ret;
-
-}
-EXPORT_SYMBOL_GPL(dma_buf_mmap);
-
-/**
- * dma_buf_vmap - Create virtual mapping for the buffer object into kernel
- * address space. Same restrictions as for vmap and friends apply.
- * @dmabuf: [in] buffer to vmap
- *
- * This call may fail due to lack of virtual mapping address space.
- * These calls are optional in drivers. The intended use for them
- * is for mapping objects linear in kernel space for high use objects.
- * Please attempt to use kmap/kunmap before thinking about these interfaces.
- *
- * Returns NULL on error.
- */
-void *dma_buf_vmap(struct dma_buf *dmabuf)
-{
- void *ptr;
-
- if (WARN_ON(!dmabuf))
- return NULL;
-
- if (!dmabuf->ops->vmap)
- return NULL;
-
- mutex_lock(&dmabuf->lock);
- if (dmabuf->vmapping_counter) {
- dmabuf->vmapping_counter++;
- BUG_ON(!dmabuf->vmap_ptr);
- ptr = dmabuf->vmap_ptr;
- goto out_unlock;
- }
-
- BUG_ON(dmabuf->vmap_ptr);
-
- ptr = dmabuf->ops->vmap(dmabuf);
- if (WARN_ON_ONCE(IS_ERR(ptr)))
- ptr = NULL;
- if (!ptr)
- goto out_unlock;
-
- dmabuf->vmap_ptr = ptr;
- dmabuf->vmapping_counter = 1;
-
-out_unlock:
- mutex_unlock(&dmabuf->lock);
- return ptr;
-}
-EXPORT_SYMBOL_GPL(dma_buf_vmap);
-
-/**
- * dma_buf_vunmap - Unmap a vmap obtained by dma_buf_vmap.
- * @dmabuf: [in] buffer to vunmap
- * @vaddr: [in] vmap to vunmap
- */
-void dma_buf_vunmap(struct dma_buf *dmabuf, void *vaddr)
-{
- if (WARN_ON(!dmabuf))
- return;
-
- BUG_ON(!dmabuf->vmap_ptr);
- BUG_ON(dmabuf->vmapping_counter == 0);
- BUG_ON(dmabuf->vmap_ptr != vaddr);
-
- mutex_lock(&dmabuf->lock);
- if (--dmabuf->vmapping_counter == 0) {
- if (dmabuf->ops->vunmap)
- dmabuf->ops->vunmap(dmabuf, vaddr);
- dmabuf->vmap_ptr = NULL;
- }
- mutex_unlock(&dmabuf->lock);
-}
-EXPORT_SYMBOL_GPL(dma_buf_vunmap);
-
-#ifdef CONFIG_DEBUG_FS
-static int dma_buf_describe(struct seq_file *s)
-{
- int ret;
- struct dma_buf *buf_obj;
- struct dma_buf_attachment *attach_obj;
- int count = 0, attach_count;
- size_t size = 0;
-
- ret = mutex_lock_interruptible(&db_list.lock);
-
- if (ret)
- return ret;
-
- seq_puts(s, "\nDma-buf Objects:\n");
- seq_puts(s, "size\tflags\tmode\tcount\texp_name\n");
-
- list_for_each_entry(buf_obj, &db_list.head, list_node) {
- ret = mutex_lock_interruptible(&buf_obj->lock);
-
- if (ret) {
- seq_puts(s,
- "\tERROR locking buffer object: skipping\n");
- continue;
- }
-
- seq_printf(s, "%08zu\t%08x\t%08x\t%08ld\t%s\n",
- buf_obj->size,
- buf_obj->file->f_flags, buf_obj->file->f_mode,
- (long)(buf_obj->file->f_count.counter),
- buf_obj->exp_name);
-
- seq_puts(s, "\tAttached Devices:\n");
- attach_count = 0;
-
- list_for_each_entry(attach_obj, &buf_obj->attachments, node) {
- seq_puts(s, "\t");
-
- seq_printf(s, "%s\n", dev_name(attach_obj->dev));
- attach_count++;
- }
-
- seq_printf(s, "Total %d devices attached\n\n",
- attach_count);
-
- count++;
- size += buf_obj->size;
- mutex_unlock(&buf_obj->lock);
- }
-
- seq_printf(s, "\nTotal %d objects, %zu bytes\n", count, size);
-
- mutex_unlock(&db_list.lock);
- return 0;
-}
-
-static int dma_buf_show(struct seq_file *s, void *unused)
-{
- void (*func)(struct seq_file *) = s->private;
- func(s);
- return 0;
-}
-
-static int dma_buf_debug_open(struct inode *inode, struct file *file)
-{
- return single_open(file, dma_buf_show, inode->i_private);
-}
-
-static const struct file_operations dma_buf_debug_fops = {
- .open = dma_buf_debug_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static struct dentry *dma_buf_debugfs_dir;
-
-static int dma_buf_init_debugfs(void)
-{
- int err = 0;
- dma_buf_debugfs_dir = debugfs_create_dir("dma_buf", NULL);
- if (IS_ERR(dma_buf_debugfs_dir)) {
- err = PTR_ERR(dma_buf_debugfs_dir);
- dma_buf_debugfs_dir = NULL;
- return err;
- }
-
- err = dma_buf_debugfs_create_file("bufinfo", dma_buf_describe);
-
- if (err)
- pr_debug("dma_buf: debugfs: failed to create node bufinfo\n");
-
- return err;
-}
-
-static void dma_buf_uninit_debugfs(void)
-{
- if (dma_buf_debugfs_dir)
- debugfs_remove_recursive(dma_buf_debugfs_dir);
-}
-
-int dma_buf_debugfs_create_file(const char *name,
- int (*write)(struct seq_file *))
-{
- struct dentry *d;
-
- d = debugfs_create_file(name, S_IRUGO, dma_buf_debugfs_dir,
- write, &dma_buf_debug_fops);
-
- return PTR_ERR_OR_ZERO(d);
-}
-#else
-static inline int dma_buf_init_debugfs(void)
-{
- return 0;
-}
-static inline void dma_buf_uninit_debugfs(void)
-{
-}
-#endif
-
-static int __init dma_buf_init(void)
-{
- mutex_init(&db_list.lock);
- INIT_LIST_HEAD(&db_list.head);
- dma_buf_init_debugfs();
- return 0;
-}
-subsys_initcall(dma_buf_init);
-
-static void __exit dma_buf_deinit(void)
-{
- dma_buf_uninit_debugfs();
-}
-__exitcall(dma_buf_deinit);
diff --git a/drivers/base/reservation.c b/drivers/base/reservation.c
deleted file mode 100644
index a73fbf3b8e56..000000000000
--- a/drivers/base/reservation.c
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Copyright (C) 2012-2013 Canonical Ltd
- *
- * Based on bo.c which bears the following copyright notice,
- * but is dual licensed:
- *
- * Copyright (c) 2006-2009 VMware, Inc., Palo Alto, CA., USA
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
- * USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- **************************************************************************/
-/*
- * Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
- */
-
-#include <linux/reservation.h>
-#include <linux/export.h>
-
-DEFINE_WW_CLASS(reservation_ww_class);
-EXPORT_SYMBOL(reservation_ww_class);