From: "Zhang, Yanmin" <yanmin.zhang@intel.com>
To: Afzal Mohammed <afzal.mohd.ma@gmail.com>,
        "Zhang, LongX" <longx.zhang@intel.com>
CC: "mingo@redhat.com" <mingo@redhat.com>,
        "peterz@infradead.org" <peterz@infradead.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: RE: [PATCH] sched: don't output cpu sched info by default
Thread-Topic: [PATCH] sched: don't output cpu sched info by default
Thread-Index: AQHRnq4y1Y2Dq4Qho0Cdyg6VBLQKkZ+Z/OYAgAFzvmA=
Date: Tue, 26 Apr 2016 01:04:13 +0000
Message-ID: <144086DDB7BB6D429C79280EB1C804D40AB765C4@SHSMSX103.ccr.corp.intel.com>
References: <571DA569.5040701@intel.com> <20160425104948.GA4637@afzalpc>
In-Reply-To: <20160425104948.GA4637@afzalpc>
Accept-Language: en-US
Content-Language: en-US
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 8BIT
MIME-Version: 1.0
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1020
Lines: 31

Thanks for the pointer. We didn't notice that. That patch also
fixes the issue indeed.

Yanmin

-----Original Message-----
From: Afzal Mohammed [mailto:afzal.mohd.ma@gmail.com] 
Sent: Monday, April 25, 2016 6:50 PM
To: Zhang, LongX
Cc: mingo@redhat.com; peterz@infradead.org; linux-kernel@vger.kernel.org; Zhang, Yanmin
Subject: Re: [PATCH] sched: don't output cpu sched info by default

Hi,

On Mon, Apr 25, 2016 at 01:04:41PM +0800, Zhang Long wrote:

> Android userspace debug prcoess might dump system info by sysrq.
> One info is of cpu sched. Usually, one thread has one line dump.
> Such log is huge sometimes and such dumping spends lots of time and 
> make the system worse. Sometimes, watchdog resets the system in the 
> end.
> 
> The patch fixes it by dumping cpu sched info only when 
> sched_debug_enabled is true.

Doesn't "sched: don't dump sched debug info in SysRq-W" currently in tip/sched/core help ?,

http://lkml.kernel.org/r/1459777322-30902-1-git-send-email-rabin.vincent@axis.com

Regards
afzal