Messages in this thread | | | Date | Mon, 3 Oct 2011 13:15:07 +0200 | Subject | Re: One comment on the __release_region in kernel/resource.c | From | Geert Uytterhoeven <> |
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On Mon, Oct 3, 2011 at 12:24, KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> wrote: > On Sun, 2 Oct 2011 21:57:07 +0800 > Wei Yang <weiyang.kernel@gmail.com> wrote: > >> Dear experts, >> >> I am viewing the source code of __release_region() in kernel/resource.c. >> And I have one comment for the performance issue. >> >> For example, we have a resource tree like this. >> 10-89 >> 20-79 >> 30-49 >> 55-59 >> 60-64 >> 65-69 >> 80-89 >> 100-279 >> >> If the caller wants to release a region of [50,59], the original code will ^^^^^^^ Do you really mean [50,59]? I don't think that's allowed, as the tree has [55,59], so you would release a larger region that allocated.
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
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