linux-kernel - RE: [PATCH] sched: Make nr_uninterruptible count a signed value

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Message-ID: <1336551100.27020.84.camel@laptop>
Date:	Wed, 09 May 2012 10:11:39 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Diwakar Tundlam <dtundlam@...dia.com>
Cc:	'Ingo Molnar' <mingo@...nel.org>,
	'David Rientjes' <rientjes@...gle.com>,
	"'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>,
	Peter De Schrijver <pdeschrijver@...dia.com>
Subject: RE: [PATCH] sched: Make nr_uninterruptible count a signed value

On Tue, 2012-05-08 at 15:46 -0700, Diwakar Tundlam wrote:
> Maybe it is an artifact of 32-bit machine displaying 64-bit print format.
> An (unsigned long)(-24) promoted to (signed long long) ends up as 4294967272.
> As seen in my output of sched_debug.

Ah, quite possible. %Ld is indeed %lld and the value is long, not long
long. So the proper fix is to fudge that printk statement somehow.

> Your machine is probably natively 64-bit. 

Yeah, I gave up on 32bit computing a while ago..

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