[PATCH v1 10/10] vircaps2xmltest: Introduce HMAT test case

[Martin Kletzander]

On Mon, May 31, 2021 at 10:36:11AM +0200, Michal Privoznik wrote:
>This test was generated on a guest with the following NUMA
>configuration:
>
>    <numa>
>      <cell id='0' cpus='0-23' memory='4194304' unit='KiB' discard='yes'>
>        <cache level='1' associativity='direct' policy='writeback'>
>          <size value='10' unit='KiB'/>
>          <line value='8' unit='B'/>
>        </cache>
>        <cache level='2' associativity='full' policy='writethrough'>
>          <size value='128' unit='KiB'/>
>          <line value='16' unit='B'/>
>        </cache>
>      </cell>
>      <cell id='1' memory='2097152' unit='KiB'>
>        <cache level='1' associativity='direct' policy='writeback'>
>          <size value='10' unit='KiB'/>
>          <line value='8' unit='B'/>
>        </cache>
>      </cell>
>      <interconnects>
>        <latency initiator='0' target='0' type='access' value='5'/>
>        <latency initiator='0' target='0' type='read' value='6'/>
>        <latency initiator='0' target='0' type='write' value='7'/>
>        <latency initiator='0' target='1' type='access' value='10'/>
>        <latency initiator='0' target='1' type='read' value='11'/>
>        <latency initiator='0' target='1' type='write' value='12'/>
>        <bandwidth initiator='0' target='0' type='access' value='204800' unit='KiB'/>
>        <bandwidth initiator='0' target='0' type='read' value='205824' unit='KiB'/>
>        <bandwidth initiator='0' target='0' type='write' value='206848' unit='KiB'/>
>        <bandwidth initiator='0' target='0' cache='1' type='access' value='208896' unit='KiB'/>
>        <bandwidth initiator='0' target='0' cache='1' type='read' value='209920' unit='KiB'/>
>        <bandwidth initiator='0' target='0' cache='1' type='write' value='210944' unit='KiB'/>
>        <bandwidth initiator='0' target='1' type='access' value='102400' unit='KiB'/>
>        <bandwidth initiator='0' target='1' type='read' value='103424' unit='KiB'/>
>        <bandwidth initiator='0' target='1' type='write' value='104448' unit='KiB'/>
>        <bandwidth initiator='0' target='1' cache='1' type='access' value='105472' unit='KiB'/>
>        <bandwidth initiator='0' target='1' cache='1' type='read' value='106496' unit='KiB'/>
>        <bandwidth initiator='0' target='1' cache='1' type='write' value='107520' unit='KiB'/>
>      </interconnects>
>    </numa>
>
>The sysfs content was also copied over from the VM but only those
>files which are accessed in the test are stored in the repo.
>
>Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
>---

This unfortunately introduces symbolic link loops.  They are fine in
sysfs, but we always had issues with them when running distcheck and
similar.

I tried it now and did not reproduce the exact issue, but it still is
not nice (global -u complains, some programs might just end up in an
infinite loop).  Historically we replicated "just enough" to use it in
tests, but not so much that it would introduce loops.  I would prefer if
it stayed that way.
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