Messages in this thread | | | Date | Tue, 18 Oct 2016 01:03:09 +0200 (CEST) | From | Thomas Gleixner <> | Subject | RE: [PATCH v4 13/18] x86/intel_rdt: Add mkdir to resctrl file system |
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On Mon, 17 Oct 2016, Luck, Tony wrote: > > So how are we going to deal with that in the schematas? Assume the L3=16 > > and L2=8 case(no CDP). So effectively any write of L2 to CLOSID=0 will > > affect the setting of L2 in CLOSID=8. > > > > Will the code tell the user that L2 cannot be set for CLOSID >= 8? > > > > Will it print the setting of CLOSID - 8 for CLOSID >= 8 when you read the > > schemata file of CLOSID >= 8? > > The default and first 7 directories you make will have lines in schemata for > both L3 and L2. The next 8 will just have L3 (and won't let you add L2). > > > And of course this becomes very interesting when CLOSID 1 is deleted, then > > what happens to CLOSID 9? Not to talk about the case when CLOSID 1 is > > reused again. > > Deleting CLOSID 1 won't affect CLOSID 9.
How so? CLOSID 9 is using CLOSID 1 L2 settings. Are we just keeping the L2 setting of CLOSID 1 around and do not reset it to default?
> When you make a new directory that gets allocated CLOSID 1, it will have > both L3 and L2 lines.
Now CLOSID 1 is reused and reset to all 1's per default and even if not then the operator will set a new L2 value and therefor wreckaging CLOSID 9.
Thanks,
tglx
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