#ifndef __DRM_OF_H__
#define __DRM_OF_H__

#include <linux/of_graph.h>

struct component_master_ops;
struct component_match;
struct device;
struct drm_device;
struct drm_encoder;
struct device_node;

#ifdef CONFIG_OF
extern uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
					   struct device_node *port);
extern void drm_of_component_match_add(struct device *master,
				       struct component_match **matchptr,
				       int (*compare)(struct device *, void *),
				       struct device_node *node);
extern int drm_of_component_probe(struct device *dev,
				  int (*compare_of)(struct device *, void *),
				  const struct component_master_ops *m_ops);
extern int drm_of_encoder_active_endpoint(struct device_node *node,
					  struct drm_encoder *encoder,
					  struct of_endpoint *endpoint);
#else
static inline uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
						  struct device_node *port)
{
	return 0;
}

static inline void
drm_of_component_match_add(struct device *master,
			   struct component_match **matchptr,
			   int (*compare)(struct device *, void *),
			   struct device_node *node)
{
}

static inline int
drm_of_component_probe(struct device *dev,
		       int (*compare_of)(struct device *, void *),
		       const struct component_master_ops *m_ops)
{
	return -EINVAL;
}

static inline int drm_of_encoder_active_endpoint(struct device_node *node,
						 struct drm_encoder *encoder,
						 struct of_endpoint *endpoint)
{
	return -EINVAL;
}
#endif

static inline int drm_of_encoder_active_endpoint_id(struct device_node *node,
						    struct drm_encoder *encoder)
{
	struct of_endpoint endpoint;
	int ret = drm_of_encoder_active_endpoint(node, encoder,
						 &endpoint);

	return ret ?: endpoint.id;
}

static inline int drm_of_encoder_active_port_id(struct device_node *node,
						struct drm_encoder *encoder)
{
	struct of_endpoint endpoint;
	int ret = drm_of_encoder_active_endpoint(node, encoder,
						 &endpoint);

	return ret ?: endpoint.port;
}

#endif /* __DRM_OF_H__ */
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<div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='809ecb9bca6a9424ccd392d67e368160f8b76c92'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option 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>Jason Wang &lt;jasowang@redhat.com&gt;</td><td class='right'>2016-12-12 14:46:49 +0800</td></tr>
<tr><th>committer</th><td>Michael S. Tsirkin &lt;mst@redhat.com&gt;</td><td class='right'>2016-12-16 00:12:50 +0200</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=809ecb9bca6a9424ccd392d67e368160f8b76c92'>809ecb9bca6a9424ccd392d67e368160f8b76c92</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=809ecb9bca6a9424ccd392d67e368160f8b76c92'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=809ecb9bca6a9424ccd392d67e368160f8b76c92'>606dee0e521208955dee5b5bdda763b3c30425cb</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=6c083c2b8a0a110cad936bc0a2c089f0d8115175'>6c083c2b8a0a110cad936bc0a2c089f0d8115175</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=809ecb9bca6a9424ccd392d67e368160f8b76c92&amp;id2=6c083c2b8a0a110cad936bc0a2c089f0d8115175'>diff</a>)</td></tr></table>
<div class='commit-subject'>vhost: cache used event for better performance</div><div class='commit-msg'>When event index was enabled, we need to fetch used event from
userspace memory each time. This userspace fetch (with memory
barrier) could be saved sometime when 1) caching used event and 2)
if used event is ahead of new and old to new updating does not cross
it, we're sure there's no need to notify guest.

This will be useful for heavy tx load e.g guest pktgen test with Linux
driver shows ~3.5% improvement.

Signed-off-by: Jason Wang &lt;jasowang@redhat.com&gt;
Signed-off-by: Michael S. Tsirkin &lt;mst@redhat.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=809ecb9bca6a9424ccd392d67e368160f8b76c92'>Diffstat</a></div><table summary='diffstat' class='diffstat'>