[PATCH] um: borrow bitops from the x86 tree

[Anton Ivanov]

On 17/11/2020 12:11, Johannes Berg wrote:
> On Tue, 2020-11-17 at 11:46 +0000, Anton Ivanov wrote:
>>
>> My usual test is:
>>
>>    time busybox find /usr/lib/ -type f -exec cat {} > /dev/null \;
>>
>> I discard the first run and use only runs from fs cache.
> 
> Oh. I didn't even run the timing inside. I ran it *outside*, something
> like
> 
> time ./linux args... init=/path/to/test-script.sh

I usually do a full set of tests on fs access, device IO access and a 
netperf after each patch.

Based on them it looks like it is worth it.

The more interesting question is - is this the right organization?

We have stuff in multiple places now - arch/x86/um , arch/um, etc.

IMHO, we should probably look at getting it organized so that all 
sub-arches are under the um tree at some point.

> 
> johannes
> 
> 
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Anton R. Ivanov
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