linux-kernel - Re: [PATCH 1/9] sched: test below 0 on unsigned sysctl_sched_rt

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Date:	Tue, 22 Jul 2008 11:08:59 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	roel kluin <roel.kluin@...il.com>
Cc:	mingo@...e.hu, rml@...h9.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/9] sched: test below 0 on unsigned
	sysctl_sched_rt_period

On Mon, 2008-07-21 at 20:28 -0400, roel kluin wrote:
> Peter, you added the test in global_rt_runtime(), in commit
> d0b27fa77854b149ad4af08b0fe47fe712a47ade
> could you take a look at it and tell whether this test should
> be replaced by something else?
> 
> The patch was only checkpatch tested
> ---
> sysctl_sched_rt_period is unsigned so the test doesn't work.
> state_filter is an unsigned long so the test didn't work
> 
> Signed-off-by: Roel Kluin <roel.kluin@...il.com>
> ---
> diff --git a/kernel/sched.c b/kernel/sched.c
> index 99e6d85..2030340 100644
> --- a/kernel/sched.c
> +++ b/kernel/sched.c
> @@ -832,9 +832,6 @@ static inline u64 global_rt_period(void)
>  
>  static inline u64 global_rt_runtime(void)
>  {
> -	if (sysctl_sched_rt_period < 0)
> -		return RUNTIME_INF;

Gah, I'm a moron. That should read:

  if (sysctl_sched_rt_runtime < 0)

Care to send a patch to fix it?

Thanks for spotting this!


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