Re: [igt-dev] [PATCH i-g-t] overlay: Believe in 0MHz

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On 28/11/2019 18:04, Chris Wilson wrote:
Tvrtko proposed reporting 0MHz when idle, but the overlay didn't believe
that would be possible and stripped from its graphs!

Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
  overlay/overlay.c | 9 +++------
  1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/overlay/overlay.c b/overlay/overlay.c
index dd4fca29e..77302181c 100644
--- a/overlay/overlay.c
+++ b/overlay/overlay.c
@@ -599,10 +599,8 @@ static void show_gpu_freq(struct overlay_context *ctx, struct overlay_gpu_freq *
  	}
if (has_freq) {
-		if (gf->gpu_freq.current)
-			chart_add_sample(&gf->current, gf->gpu_freq.current);
-		if (gf->gpu_freq.request)
-			chart_add_sample(&gf->request, gf->gpu_freq.request);
+		chart_add_sample(&gf->current, gf->gpu_freq.current);
+		chart_add_sample(&gf->request, gf->gpu_freq.request);
chart_draw(&gf->request, ctx->cr);
  		chart_draw(&gf->current, ctx->cr);
@@ -647,9 +645,8 @@ static void show_gpu_freq(struct overlay_context *ctx, struct overlay_gpu_freq *
  		cairo_text_extents_t extents;
len = sprintf(buf, "Frequency: %dMHz", gf->gpu_freq.current);
-		if (gf->gpu_freq.request)
  		cairo_set_source_rgba(ctx->cr, 1, 1, 1, 1);
-			sprintf(buf + len, " (requested %dMHz)", gf->gpu_freq.request);
+		sprintf(buf + len, " (requested %dMHz)", gf->gpu_freq.request);
  		cairo_move_to(ctx->cr, PAD, y);
  		cairo_show_text(ctx->cr, buf);
  		y += 12;


Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>

For if/when we decide to go with it. You made me a little bit unsure with the sysfs angle although from the other hand I don't see that it is useful to report non-zero while idle.

Regards,

Tvrtko
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