diff options
Diffstat (limited to 'drivers/gpu/drm/drm_proc.c')
| -rw-r--r-- | drivers/gpu/drm/drm_proc.c | 71 |
1 files changed, 69 insertions, 2 deletions
diff --git a/drivers/gpu/drm/drm_proc.c b/drivers/gpu/drm/drm_proc.c index ae73b7f7249a..8df849f66830 100644 --- a/drivers/gpu/drm/drm_proc.c +++ b/drivers/gpu/drm/drm_proc.c @@ -49,6 +49,8 @@ static int drm_queues_info(char *buf, char **start, off_t offset, int request, int *eof, void *data); static int drm_bufs_info(char *buf, char **start, off_t offset, int request, int *eof, void *data); +static int drm_vblank_info(char *buf, char **start, off_t offset, + int request, int *eof, void *data); static int drm_gem_name_info(char *buf, char **start, off_t offset, int request, int *eof, void *data); static int drm_gem_object_info(char *buf, char **start, off_t offset, @@ -72,6 +74,7 @@ static struct drm_proc_list { {"clients", drm_clients_info, 0}, {"queues", drm_queues_info, 0}, {"bufs", drm_bufs_info, 0}, + {"vblank", drm_vblank_info, 0}, {"gem_names", drm_gem_name_info, DRIVER_GEM}, {"gem_objects", drm_gem_object_info, DRIVER_GEM}, #if DRM_DEBUG_CODE @@ -195,6 +198,7 @@ static int drm_name_info(char *buf, char **start, off_t offset, int request, int *eof, void *data) { struct drm_minor *minor = (struct drm_minor *) data; + struct drm_master *master = minor->master; struct drm_device *dev = minor->dev; int len = 0; @@ -203,13 +207,16 @@ static int drm_name_info(char *buf, char **start, off_t offset, int request, return 0; } + if (!master) + return 0; + *start = &buf[offset]; *eof = 0; - if (dev->unique) { + if (master->unique) { DRM_PROC_PRINT("%s %s %s\n", dev->driver->pci_driver.name, - pci_name(dev->pdev), dev->unique); + pci_name(dev->pdev), master->unique); } else { DRM_PROC_PRINT("%s %s\n", dev->driver->pci_driver.name, pci_name(dev->pdev)); @@ -454,6 +461,66 @@ static int drm_bufs_info(char *buf, char **start, off_t offset, int request, } /** + * Called when "/proc/dri/.../vblank" is read. + * + * \param buf output buffer. + * \param start start of output data. + * \param offset requested start offset. + * \param request requested number of bytes. + * \param eof whether there is no more data to return. + * \param data private data. + * \return number of written bytes. + */ +static int drm__vblank_info(char *buf, char **start, off_t offset, int request, + int *eof, void *data) +{ + struct drm_minor *minor = (struct drm_minor *) data; + struct drm_device *dev = minor->dev; + int len = 0; + int crtc; + + if (offset > DRM_PROC_LIMIT) { + *eof = 1; + return 0; + } + + *start = &buf[offset]; + *eof = 0; + + for (crtc = 0; crtc < dev->num_crtcs; crtc++) { + DRM_PROC_PRINT("CRTC %d enable: %d\n", + crtc, atomic_read(&dev->vblank_refcount[crtc])); + DRM_PROC_PRINT("CRTC %d counter: %d\n", + crtc, drm_vblank_count(dev, crtc)); + DRM_PROC_PRINT("CRTC %d last wait: %d\n", + crtc, dev->last_vblank_wait[crtc]); + DRM_PROC_PRINT("CRTC %d in modeset: %d\n", + crtc, dev->vblank_inmodeset[crtc]); + } + + if (len > request + offset) + return request; + *eof = 1; + return len - offset; +} + +/** + * Simply calls _vblank_info() while holding the drm_device::struct_mutex lock. + */ +static int drm_vblank_info(char *buf, char **start, off_t offset, int request, + int *eof, void *data) +{ + struct drm_minor *minor = (struct drm_minor *) data; + struct drm_device *dev = minor->dev; + int ret; + + mutex_lock(&dev->struct_mutex); + ret = drm__vblank_info(buf, start, offset, request, eof, data); + mutex_unlock(&dev->struct_mutex); + return ret; +} + +/** * Called when "/proc/dri/.../clients" is read. * * \param buf output buffer. |