Messages in this thread | | | Date | Thu, 23 Jan 2014 11:23:30 -0800 | Subject | Re: [PATCH 4/10] atyfb: set FBINFO_READS_FAST | From | Linus Torvalds <> |
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Hmm. You're doing this for Matrix and now the aty driver.
Maybe the problem is at the fbcon level? Depending on FBINFO_READS_FAST to decide whether you should scroll or rewrite sounds a bit silly: even if a device doesn't have fast reads, maybe it has a fast accelerated BLIT operation and scrolls quickly. Should the fbcon test perhaps be for FBINFO_READS_FAST _or_ the FBINFO_HWACCEL_COPYAREA bits?
I dunno. I didn't actually check the ->bcopy implementations, maybe they don't use copyarea. So I'm just going by a general "this feels wrong" feeling..
Linus
On Thu, Jan 23, 2014 at 10:18 AM, Mikulas Patocka <mpatocka@redhat.com> wrote: > Set FBINFO_READS_FAST so that the console code uses scrolling instead of > rewriting. This improves scrolling speed.
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