#ifndef _DRM_AGPSUPPORT_H_
#define _DRM_AGPSUPPORT_H_

#include <linux/agp_backend.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/mm.h>
#include <linux/mutex.h>
#include <linux/types.h>
#include <uapi/drm/drm.h>

struct drm_device;
struct drm_file;

struct drm_agp_head {
	struct agp_kern_info agp_info;
	struct list_head memory;
	unsigned long mode;
	struct agp_bridge_data *bridge;
	int enabled;
	int acquired;
	unsigned long base;
	int agp_mtrr;
	int cant_use_aperture;
	unsigned long page_mask;
};

#if IS_ENABLED(CONFIG_AGP)

void drm_free_agp(struct agp_memory * handle, int pages);
int drm_bind_agp(struct agp_memory * handle, unsigned int start);
int drm_unbind_agp(struct agp_memory * handle);
struct agp_memory *drm_agp_bind_pages(struct drm_device *dev,
				struct page **pages,
				unsigned long num_pages,
				uint32_t gtt_offset,
				uint32_t type);

struct drm_agp_head *drm_agp_init(struct drm_device *dev);
void drm_legacy_agp_clear(struct drm_device *dev);
int drm_agp_acquire(struct drm_device *dev);
int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
			  struct drm_file *file_priv);
int drm_agp_release(struct drm_device *dev);
int drm_agp_release_ioctl(struct drm_device *dev, void *data,
			  struct drm_file *file_priv);
int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
			 struct drm_file *file_priv);
int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
int drm_agp_info_ioctl(struct drm_device *dev, void *data,
		       struct drm_file *file_priv);
int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
			struct drm_file *file_priv);
int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
int drm_agp_free_ioctl(struct drm_device *dev, void *data,
		       struct drm_file *file_priv);
int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
			 struct drm_file *file_priv);
int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
		       struct drm_file *file_priv);

#else /* CONFIG_AGP */

static inline void drm_free_agp(struct agp_memory * handle, int pages)
{
}

static inline int drm_bind_agp(struct agp_memory * handle, unsigned int start)
{
	return -ENODEV;
}

static inline int drm_unbind_agp(struct agp_memory * handle)
{
	return -ENODEV;
}

static inline struct agp_memory *drm_agp_bind_pages(struct drm_device *dev,
					      struct page **pages,
					      unsigned long num_pages,
					      uint32_t gtt_offset,
					      uint32_t type)
{
	return NULL;
}

static inline struct drm_agp_head *drm_agp_init(struct drm_device *dev)
{
	return NULL;
}

static inline void drm_legacy_agp_clear(struct drm_device *dev)
{
}

static inline int drm_agp_acquire(struct drm_device *dev)
{
	return -ENODEV;
}

static inline int drm_agp_release(struct drm_device *dev)
{
	return -ENODEV;
}

static inline int drm_agp_enable(struct drm_device *dev,
				 struct drm_agp_mode mode)
{
	return -ENODEV;
}

static inline int drm_agp_info(struct drm_device *dev,
			       struct drm_agp_info *info)
{
	return -ENODEV;
}

static inline int drm_agp_alloc(struct drm_device *dev,
				struct drm_agp_buffer *request)
{
	return -ENODEV;
}

static inline int drm_agp_free(struct drm_device *dev,
			       struct drm_agp_buffer *request)
{
	return -ENODEV;
}

static inline int drm_agp_unbind(struct drm_device *dev,
				 struct drm_agp_binding *request)
{
	return -ENODEV;
}

static inline int drm_agp_bind(struct drm_device *dev,
			       struct drm_agp_binding *request)
{
	return -ENODEV;
}

#endif /* CONFIG_AGP */

#endif /* _DRM_AGPSUPPORT_H_ */
 value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>zhong jiang &lt;zhongjiang@huawei.com&gt;</td><td class='right'>2017-01-24 15:18:52 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-24 16:26:14 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/trace?id=3277953de2f31dd03c6375e9a9f680ac37fc9d27'>3277953de2f31dd03c6375e9a9f680ac37fc9d27</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/trace?id=3277953de2f31dd03c6375e9a9f680ac37fc9d27'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=3277953de2f31dd03c6375e9a9f680ac37fc9d27'>6ba22924faa1b82ef2f0277db10a3f5abdc44157</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/trace?id=3277953de2f31dd03c6375e9a9f680ac37fc9d27'>include/trace</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/trace?id=3705ccfdd1e8b539225ce20e3925a945cc788d67'>3705ccfdd1e8b539225ce20e3925a945cc788d67</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/trace?id=3277953de2f31dd03c6375e9a9f680ac37fc9d27&amp;id2=3705ccfdd1e8b539225ce20e3925a945cc788d67'>diff</a>)</td></tr></table>
<div class='commit-subject'>mm: do not export ioremap_page_range symbol for external module</div><div class='commit-msg'>Recently, I've found cases in which ioremap_page_range was used
incorrectly, in external modules, leading to crashes.  This can be
partly attributed to the fact that ioremap_page_range is lower-level,
with fewer protections, as compared to the other functions that an
external module would typically call.  Those include:

     ioremap_cache
     ioremap_nocache
     ioremap_prot
     ioremap_uc
     ioremap_wc
     ioremap_wt

...each of which wraps __ioremap_caller, which in turn provides a safer
way to achieve the mapping.

Therefore, stop EXPORT-ing ioremap_page_range.

Link: http://lkml.kernel.org/r/1485173220-29010-1-git-send-email-zhongjiang@huawei.com
Signed-off-by: zhong jiang &lt;zhongjiang@huawei.com&gt;
Reviewed-by: John Hubbard &lt;jhubbard@nvidia.com&gt;
Suggested-by: John Hubbard &lt;jhubbard@nvidia.com&gt;
Acked-by: Michal Hocko &lt;mhocko@suse.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=3277953de2f31dd03c6375e9a9f680ac37fc9d27'>Diffstat</a> (limited to 'include/trace')</div><table summary='diffstat' class='diffstat'>