Messages in this thread | | | Date | Tue, 13 May 2014 15:54:16 -0700 | Subject | Re: [PATCH] init: Don't decrease loops_per_jiffy when a CPU comes up | From | Doug Anderson <> |
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Paul,
On Fri, May 9, 2014 at 9:03 AM, Paul Gortmaker <paul.gortmaker@windriver.com> wrote: > On 14-05-07 07:50 PM, Doug Anderson wrote: >> The loops_per_jiffy count continues to be updated as each CPU is >> brought up. This causes problems when we've got an HMP system and >> different CPUs have different loops per jiffy. On exynos 542x >> systems, for instance, the A7s will have significantly lower loops per >> jiffy than their big brothers. > > Based on the other discussion for the ARM variant of this, I'm > assuming this also becomes a WFC issue. And if not, then it > probably should go by John or similar ; getmaintainers is just > being dumb in spitting my name out, since I only made one > trivial change to this file a year ago or similar.
I think this change could still make sense. The ARM discussion is about dealing with the scaling that the ARM code does, but it really is a separate concept.
In general it seems like at least a warning is in order if loops_per_jiffy changes significantly from CPU to CPU.
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