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backend-drm: Use a local variable to store output frame rate data

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As otherwise we might trip because the output might be not available.

Fixes: cda8de1089 ("backend-drm: Count and display KMS page flips")

Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
This commit is contained in:
Marius Vlad 2025-06-07 21:25:57 +03:00 • committed by Marius Vlad
parent c0dfeaf156
commit a4494f2ea3
1 changed files with 9 additions and 2 deletions
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11
libweston/backend-drm/kms.c
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@ -1901,6 +1901,8 @@ atomic_flip_handler(int fd, unsigned int frame, unsigned int sec,
struct drm_crtc *crtc;
struct drm_output *output;
struct timespec now;
float page_flips_per_timer_interval;
uint32_t frame_counter_interval;
uint32_t flags = WP_PRESENTATION_FEEDBACK_KIND_VSYNC |
WP_PRESENTATION_FEEDBACK_KIND_HW_COMPLETION |
WP_PRESENTATION_FEEDBACK_KIND_HW_CLOCK;
@ -1917,6 +1919,12 @@ atomic_flip_handler(int fd, unsigned int frame, unsigned int sec,
return;
output->page_flips_counted++;
/* store them temporarily as drm_output_update_complete might destroy
* the output */
page_flips_per_timer_interval = output->page_flips_per_timer_interval;
frame_counter_interval =
output->backend->perf_page_flips_stats.frame_counter_interval;
drm_output_update_msc(output, frame);
@ -1939,8 +1947,7 @@ atomic_flip_handler(int fd, unsigned int frame, unsigned int sec,
drm_output_update_complete(output, flags, sec, usec);
drm_debug(b, "[atomic][CRTC:%u] flip processing completed\n", crtc_id);
drm_debug(b, "[atomic][CRTC:%u] %.2f page flips computed in %d seconds\n",
crtc_id, output->page_flips_per_timer_interval,
output->backend->perf_page_flips_stats.frame_counter_interval);
crtc_id, page_flips_per_timer_interval, frame_counter_interval);
}
int