On Tue, 3 Sep 2019 at 09:46, Daniel Vetter <daniel@xxxxxxxx> wrote: > > On Mon, Sep 02, 2019 at 04:24:12PM +0200, Heinrich Fink wrote: > > Store the timestamp of the current vblank in the new field 'time' of the > > vblank trace event. If the timestamp is calculated by a driver that > > supports high-precision vblank timing, set the field 'high-prec' to > > 'true'. > > > > User space can now access actual hardware vblank times via the tracing > > infrastructure. Tracing applications (such as GPUVis, see [0] for > > related discussion), can use the newly added information to conduct a > > more accurate analysis of display timing. > > > > v2 Fix author name (missing last name) > > > > [0] https://github.com/mikesart/gpuvis/issues/30 > > > > Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx> > > Signed-off-by: Heinrich Fink <heinrich.fink@xxxxxxxxx> > > Applied, thanks. thanks! One question: After sending v2, I got an email from patchwork pointing at some failed style checks (CHECK:PARENTHESIS_ALIGNMENT, CHECK:COMPARISON_TO_NULL). Just so I know for the future, are these checks mandatory to be addressed? I haven't had a chance to address them yet. FWIW, linux-tree/scripts/checkpatch.pl did not complain. - Heinrich > -Daniel > > > --- > > drivers/gpu/drm/drm_trace.h | 14 ++++++++++---- > > drivers/gpu/drm/drm_vblank.c | 3 ++- > > 2 files changed, 12 insertions(+), 5 deletions(-) > > > > diff --git a/drivers/gpu/drm/drm_trace.h b/drivers/gpu/drm/drm_trace.h > > index 471eb927474b..11c6dd577e8e 100644 > > --- a/drivers/gpu/drm/drm_trace.h > > +++ b/drivers/gpu/drm/drm_trace.h > > @@ -13,17 +13,23 @@ struct drm_file; > > #define TRACE_INCLUDE_FILE drm_trace > > > > TRACE_EVENT(drm_vblank_event, > > - TP_PROTO(int crtc, unsigned int seq), > > - TP_ARGS(crtc, seq), > > + TP_PROTO(int crtc, unsigned int seq, ktime_t time, bool high_prec), > > + TP_ARGS(crtc, seq, time, high_prec), > > TP_STRUCT__entry( > > __field(int, crtc) > > __field(unsigned int, seq) > > + __field(ktime_t, time) > > + __field(bool, high_prec) > > ), > > TP_fast_assign( > > __entry->crtc = crtc; > > __entry->seq = seq; > > - ), > > - TP_printk("crtc=%d, seq=%u", __entry->crtc, __entry->seq) > > + __entry->time = time; > > + __entry->high_prec = high_prec; > > + ), > > + TP_printk("crtc=%d, seq=%u, time=%lld, high-prec=%s", > > + __entry->crtc, __entry->seq, __entry->time, > > + __entry->high_prec ? "true" : "false") > > ); > > > > TRACE_EVENT(drm_vblank_event_queued, > > diff --git a/drivers/gpu/drm/drm_vblank.c b/drivers/gpu/drm/drm_vblank.c > > index fd1fbc77871f..c99feda25dea 100644 > > --- a/drivers/gpu/drm/drm_vblank.c > > +++ b/drivers/gpu/drm/drm_vblank.c > > @@ -1731,7 +1731,8 @@ static void drm_handle_vblank_events(struct drm_device *dev, unsigned int pipe) > > send_vblank_event(dev, e, seq, now); > > } > > > > - trace_drm_vblank_event(pipe, seq); > > + trace_drm_vblank_event(pipe, seq, now, > > + dev->driver->get_vblank_timestamp != NULL); > > } > > > > /** > > -- > > 2.23.0.rc1 > > > > -- > Daniel Vetter > Software Engineer, Intel Corporation > http://blog.ffwll.ch _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
