Tracepoints that display frame and scanline counters for all pipes were
added with commit 1489bba82433 ("drm/i915: Add cxsr toggle tracepoint")
and commit 0b2599a43ca9 ("drm/i915: Add pipe enable/disable
tracepoints"). At that time, we only had pipes A, B and C. Now that we
can also have pipe D, the TP_printk() calls are missing it.
As a quick and dirty fix for that, let's define two common macros to be
used for the format and values respectively, and also ensure we raise a
build bug if more pipes are added to enum pipe.
In the future, we should probably have a way of printing information for
available pipes only.
Signed-off-by: Gustavo Sousa <gustavo.sousa@xxxxxxxxx>
---
.../drm/i915/display/intel_display_trace.h | 43 +++++++++++++------
1 file changed, 29 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display_trace.h b/drivers/gpu/drm/i915/display/intel_display_trace.h
index 759b985c84a9..2ce66dffdfa5 100644
--- a/drivers/gpu/drm/i915/display/intel_display_trace.h
+++ b/drivers/gpu/drm/i915/display/intel_display_trace.h
@@ -30,6 +30,29 @@
#define _TRACE_PIPE_A 0
#define _TRACE_PIPE_B 1
#define _TRACE_PIPE_C 2
+#define _TRACE_PIPE_D 3
+
+/*
+ * FIXME: Several TP_printk() calls below display frame and scanline numbers for
+ * all possible pipes (regardless of whether they are available) and that is
+ * done with a constant format string. A better approach would be to generate
+ * that info dynamically based on available pipes, but, while we do not have
+ * that implemented yet, let's assert that the constant format string indeed
+ * covers all possible pipes.
+ */
+static_assert(I915_MAX_PIPES - 1 == _TRACE_PIPE_D);
+
+#define _PIPES_FRAME_AND_SCANLINE_FMT \
+ "pipe A: frame=%u, scanline=%u" \
+ ", pipe B: frame=%u, scanline=%u" \
+ ", pipe C: frame=%u, scanline=%u" \
+ ", pipe D: frame=%u, scanline=%u"
+
+#define _PIPES_FRAME_AND_SCANLINE_VALUES \
+ __entry->frame[_TRACE_PIPE_A], __entry->scanline[_TRACE_PIPE_A] \
+ , __entry->frame[_TRACE_PIPE_B], __entry->scanline[_TRACE_PIPE_B] \
+ , __entry->frame[_TRACE_PIPE_C], __entry->scanline[_TRACE_PIPE_C] \
+ , __entry->frame[_TRACE_PIPE_D], __entry->scanline[_TRACE_PIPE_D]
TRACE_EVENT(intel_pipe_enable,
TP_PROTO(struct intel_crtc *crtc),
@@ -52,11 +75,8 @@ TRACE_EVENT(intel_pipe_enable,
__entry->pipe_name = pipe_name(crtc->pipe);
),
- TP_printk("dev %s, pipe %c enable, pipe A: frame=%u, scanline=%u, pipe B: frame=%u, scanline=%u, pipe C: frame=%u, scanline=%u",
- __get_str(dev), __entry->pipe_name,
- __entry->frame[_TRACE_PIPE_A], __entry->scanline[_TRACE_PIPE_A],
- __entry->frame[_TRACE_PIPE_B], __entry->scanline[_TRACE_PIPE_B],
- __entry->frame[_TRACE_PIPE_C], __entry->scanline[_TRACE_PIPE_C])
+ TP_printk("dev %s, pipe %c enable, " _PIPES_FRAME_AND_SCANLINE_FMT,
+ __get_str(dev), __entry->pipe_name, _PIPES_FRAME_AND_SCANLINE_VALUES)
);
TRACE_EVENT(intel_pipe_disable,
@@ -81,11 +101,8 @@ TRACE_EVENT(intel_pipe_disable,
__entry->pipe_name = pipe_name(crtc->pipe);
),
- TP_printk("dev %s, pipe %c disable, pipe A: frame=%u, scanline=%u, pipe B: frame=%u, scanline=%u, pipe C: frame=%u, scanline=%u",
- __get_str(dev), __entry->pipe_name,
- __entry->frame[_TRACE_PIPE_A], __entry->scanline[_TRACE_PIPE_A],
- __entry->frame[_TRACE_PIPE_B], __entry->scanline[_TRACE_PIPE_B],
- __entry->frame[_TRACE_PIPE_C], __entry->scanline[_TRACE_PIPE_C])
+ TP_printk("dev %s, pipe %c disable, " _PIPES_FRAME_AND_SCANLINE_FMT,
+ __get_str(dev), __entry->pipe_name, _PIPES_FRAME_AND_SCANLINE_VALUES)
);
TRACE_EVENT(intel_crtc_flip_done,
@@ -211,11 +228,9 @@ TRACE_EVENT(intel_memory_cxsr,
__entry->new = new;
),
- TP_printk("dev %s, cxsr %s->%s, pipe A: frame=%u, scanline=%u, pipe B: frame=%u, scanline=%u, pipe C: frame=%u, scanline=%u",
+ TP_printk("dev %s, cxsr %s->%s, " _PIPES_FRAME_AND_SCANLINE_FMT,
__get_str(dev), str_on_off(__entry->old), str_on_off(__entry->new),
- __entry->frame[_TRACE_PIPE_A], __entry->scanline[_TRACE_PIPE_A],
- __entry->frame[_TRACE_PIPE_B], __entry->scanline[_TRACE_PIPE_B],
- __entry->frame[_TRACE_PIPE_C], __entry->scanline[_TRACE_PIPE_C])
+ _PIPES_FRAME_AND_SCANLINE_VALUES)
);
TRACE_EVENT(g4x_wm,
--
2.46.0
