Re: [patch] CFS scheduler, -v8
From: Ingo Molnar
Date: Wed May 02 2007 - 07:18:48 EST
* Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx> wrote:
> The problem is with comparing a s64 values with (s64)ULONG_MAX, which
> evaluates to -1. Then we check if exec_delta64 and fair_delta64 are
> greater than (s64)ULONG_MAX (-1), if so we assign (s64)ULONG_MAX to
> the respective values.
ah, indeed ...
> The fix is to compare these values against (s64)LONG_MAX and assign
> (s64)LONG_MAX to exec_delta64 and fair_delta64 if they are greater
> than (s64)LONG_MAX.
>
> Tested on PowerPC, the regression is gone, tasks are load balanced as
> they were in v7.
thanks, applied!
Ingo
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