On 10/29/2015 06:13 AM, Anton Blanchard wrote:
> Here are various improvements to our context switch path. Some of the
> highlights:
>
> - Group all mfsprs and mtsprs in __switch_to(), which gives us a
> 10% improvement on POWER8.
>
> - Create giveup_all() and flush_all_to_thread() so we only write the
> MSR once, which gives us a 3% improvement on POWER8.
>
> - Create disable_kernel_{fp,altivec,vsx,spe}() and add a debug boot
> option (ppc_strict_facility_enable) to minimise kernel code running
> with floating point and vector bits enabled.
>
> - Make giveup_vsx() and flush_vsx_to_thread() handle FP and Altivec
> state, so they behave more like their sister functions.
>
> Scott: There are changes to the SPE code here which I have only been
> able to compile test.
Hey Anton,
Wondering if you have a git tree hosted some where to pull these patches ?
-- Anshuman
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