On Thu, 2010-06-10 at 09:03 +1000, Michael Neuling wrote: > Peter, > > It looks like when this was pushed to Ingo, some of the logic was > changed. rt_freq_influence() became fix_small_capacity() but the return > values for these two functions are opposite (return 1 => return 0 and > visa versa]]). > > This was changed in the sibling test (return 1 => return 0), but the > check for the change in cpu power due to freq and rt was not. > > So either the return values need to be changed at the end of > fix_small_capacity() or the cpu_power test needs to be the other way > around. Below changes the cpu_power test as it brings it more inline > with the comment above it. > > Without this the asymmetric packing doesn't work. D'oh fully my fault for cleaning up. Thanks, I'll make sure it gets fixed. > Subject: sched: fix the CPU power test for fix_small_capacity > > The CPU power test is the wrong way around in fix_small_capacity. > > This was due to a small changes made in the posted patch on lkml to what > was was taken upstream. > > This patch fixes asymmetric packing for POWER7. > > Signed-off-by: Michael Neuling <mikey@xxxxxxxxxxx> > > Index: linux-2.6-ozlabs/kernel/sched_fair.c > =================================================================== > --- linux-2.6-ozlabs.orig/kernel/sched_fair.c > +++ linux-2.6-ozlabs/kernel/sched_fair.c > @@ -2354,7 +2354,7 @@ fix_small_capacity(struct sched_domain * > /* > * If ~90% of the cpu_power is still there, we're good. > */ > - if (group->cpu_power * 32 < group->cpu_power_orig * 29) > + if (group->cpu_power * 32 > group->cpu_power_orig * 29) > return 1; > > return 0; > -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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