| Message ID | 20180702110729.8171-10-mahesh1.kumar@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi Mahesh, Thank you for the patch. On Monday, 2 July 2018 14:07:28 EEST Mahesh Kumar wrote: > This reverts commit e8fa5671183c80342d520ad81d14fa79a9d4a680. > > Don't wait for first CRC during crtc_crc_open. It avoids one frame wait > during open. If application want to wait after read call, it can use > poll/read blocking read() call. > > Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com> > Signed-off-by: Mahesh Kumar <mahesh1.kumar@intel.com> > Cc: dri-devel@lists.freedesktop.org > Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > --- > drivers/gpu/drm/drm_debugfs_crc.c | 16 ---------------- > 1 file changed, 16 deletions(-) > > diff --git a/drivers/gpu/drm/drm_debugfs_crc.c > b/drivers/gpu/drm/drm_debugfs_crc.c index 739a813b4b09..add35b77165b 100644 > --- a/drivers/gpu/drm/drm_debugfs_crc.c > +++ b/drivers/gpu/drm/drm_debugfs_crc.c > @@ -226,24 +226,8 @@ static int crtc_crc_open(struct inode *inode, struct > file *filep) if (ret) > goto err; > > - spin_lock_irq(&crc->lock); > - /* > - * Only return once we got a first frame, so userspace doesn't have to > - * guess when this particular piece of HW will be ready to start > - * generating CRCs. > - */ > - ret = wait_event_interruptible_lock_irq(crc->wq, > - crtc_crc_data_count(crc), > - crc->lock); > - spin_unlock_irq(&crc->lock); > - > - if (ret) > - goto err_disable; > - > return 0; > > -err_disable: > - crtc->funcs->set_crc_source(crtc, NULL); > err: > spin_lock_irq(&crc->lock); > crtc_crc_cleanup(crc);
diff --git a/drivers/gpu/drm/drm_debugfs_crc.c b/drivers/gpu/drm/drm_debugfs_crc.c index 739a813b4b09..add35b77165b 100644 --- a/drivers/gpu/drm/drm_debugfs_crc.c +++ b/drivers/gpu/drm/drm_debugfs_crc.c @@ -226,24 +226,8 @@ static int crtc_crc_open(struct inode *inode, struct file *filep) if (ret) goto err; - spin_lock_irq(&crc->lock); - /* - * Only return once we got a first frame, so userspace doesn't have to - * guess when this particular piece of HW will be ready to start - * generating CRCs. - */ - ret = wait_event_interruptible_lock_irq(crc->wq, - crtc_crc_data_count(crc), - crc->lock); - spin_unlock_irq(&crc->lock); - - if (ret) - goto err_disable; - return 0; -err_disable: - crtc->funcs->set_crc_source(crtc, NULL); err: spin_lock_irq(&crc->lock); crtc_crc_cleanup(crc);
This reverts commit e8fa5671183c80342d520ad81d14fa79a9d4a680. Don't wait for first CRC during crtc_crc_open. It avoids one frame wait during open. If application want to wait after read call, it can use poll/read blocking read() call. Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Mahesh Kumar <mahesh1.kumar@intel.com> Cc: dri-devel@lists.freedesktop.org Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com> --- drivers/gpu/drm/drm_debugfs_crc.c | 16 ---------------- 1 file changed, 16 deletions(-)