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Re: [Xen-devel] [PATCH v3 02/10] xen/bitmap: Drop {bitmap, cpumask, nodes}_shift_{left, right}()


  • To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
  • From: Jan Beulich <JBeulich@xxxxxxxx>
  • Date: Mon, 29 Jul 2019 15:50:22 +0000
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  • Cc: StefanoStabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Julien Grall <julien.grall@xxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
  • Delivery-date: Mon, 29 Jul 2019 16:11:09 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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  • Thread-topic: [PATCH v3 02/10] xen/bitmap: Drop {bitmap,cpumask,nodes}_shift_{left,right}()

On 29.07.2019 14:11, Andrew Cooper wrote:
> These operations have never been used in Xen since their introduction, and it
> doesn't seem likely that they will in the future.
> 
> Bloat-o-meter reports that they aren't the smalled when compiled, either.

"smallest"?

>    add/remove: 0/2 grow/shrink: 0/0 up/down: 0/-814 (-814)
>    Function                                     old     new   delta
>    __bitmap_shift_left                          366       -    -366
>    __bitmap_shift_right                         448       -    -448
>    Total: Before=3323730, After=3322916, chg -0.02%
> 
> Suggested-by: Jan Beulich <JBeulich@xxxxxxxx>
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Acked-by: Jan Beulich <jbeulich@xxxxxxxx>

Thanks for taking the time,
Jan
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