Messages in this thread | | | Date | Fri, 13 May 2016 03:42:24 +0800 | From | Yuyang Du <> | Subject | Re: [tip:sched/core] sched/fair: Clean up scale confusion |
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On Thu, May 12, 2016 at 03:31:27AM -0700, tip-bot for Peter Zijlstra wrote: > Commit-ID: 1be0eb2a97d756fb7dd8c9baf372d81fa9699c09 > Gitweb: http://git.kernel.org/tip/1be0eb2a97d756fb7dd8c9baf372d81fa9699c09 > Author: Peter Zijlstra <peterz@infradead.org> > AuthorDate: Fri, 6 May 2016 12:21:23 +0200 > Committer: Ingo Molnar <mingo@kernel.org> > CommitDate: Thu, 12 May 2016 09:55:33 +0200 > > sched/fair: Clean up scale confusion > > Wanpeng noted that the scale_load_down() in calculate_imbalance() was > weird. I agree, it should be SCHED_CAPACITY_SCALE, since we're going > to compare against busiest->group_capacity, which is in [capacity] > units. > > Reported-by: Wanpeng Li <wanpeng.li@hotmail.com> > Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> > Cc: Linus Torvalds <torvalds@linux-foundation.org> > Cc: Mike Galbraith <efault@gmx.de> > Cc: Morten Rasmussen <morten.rasmussen@arm.com> > Cc: Peter Zijlstra <peterz@infradead.org> > Cc: Thomas Gleixner <tglx@linutronix.de> > Cc: Yuyang Du <yuyang.du@intel.com> > Cc: linux-kernel@vger.kernel.org > Signed-off-by: Ingo Molnar <mingo@kernel.org>
It is good that this issue is addressed and patch merged, however, for the record, Vincent has already had a solution for this, and we had a patch, including other cleanups (the latest version is: https://lkml.org/lkml/2016/5/3/925). And I think Ben first pointed this out (and we then attempted to address it) as far as I can tell.
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