[PATCH 2/2] drm/omapdrm: Fix console with deferred ops

Tony Lindgren tony at atomide.com
Sun Feb 25 06:44:04 UTC 2024


* Thomas Zimmermann <tzimmermann at suse.de> [240220 10:42]:
> The changes below look good. You can test by instrumenting
> drm_fb_helper_deferred_io() with printk(). For testing, you can reduce the
> write-back frequency by setting helper->fbdefio.delay to a higher value. If
> you set it to HZ, it should only do a write-back once per second. Then do an
> mmap() from userspace and copy data into the memory region. It should print
> something from drm_fb_helper_deferred_io(). Best regards Thomas

OK thanks I tested with fbtest.c I found [0] with some trace_printk
added and it works nicely :) Will post v2 set of patches.

Regards,

Tony

[0] https://gist.github.com/rafalrusin/1482697


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