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From: Yong Zhang <yong.zhang0@gmail.com>
To: Bharata B Rao <bharata@linux.vnet.ibm.com>
Cc: linux-kernel@vger.kernel.org, Mike Galbraith <efault@gmx.de>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Ingo Molnar <mingo@elte.hu>
Subject: Re: [PATCH -tip 1/2] [PATCH -tip 1/2] sched: Reinstate group names in /proc/sched_debug.
Date: Tue, 11 Jan 2011 20:46:58 +0800	[thread overview]
Message-ID: <20110111124658.GA4507@zhy> (raw)
In-Reply-To: <20110111101153.GE4772@in.ibm.com>

On Tue, Jan 11, 2011 at 03:41:54PM +0530, Bharata B Rao wrote:
> sched: Reinstate group names in /proc/sched_debug.
> 
> Displaying of group names in /proc/sched_debug was dropped in autogroup
> patches. Add group names while displaying cfs_rq and tasks information.
> 
> Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
> ---
>  kernel/sched_debug.c |   35 +++++++++++++++++++++++++++++++++++
>  1 file changed, 35 insertions(+)
> 
> --- a/kernel/sched_debug.c
> +++ b/kernel/sched_debug.c
> @@ -16,6 +16,8 @@
>  #include <linux/kallsyms.h>
>  #include <linux/utsname.h>
>  
> +static DEFINE_SPINLOCK(sched_debug_lock);

I don't get your point on introducing this lock.
Just to avoid concurrent access?
Or could you explain please?

Thanks,
Yong

  reply	other threads:[~2011-01-11 12:47 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-01-11 10:10 [PATCH -tip 0/2] sched: Get group names back in /proc/sched_debug - v1 Bharata B Rao
2011-01-11 10:11 ` [PATCH -tip 1/2] [PATCH -tip 1/2] sched: Reinstate group names in /proc/sched_debug Bharata B Rao
2011-01-11 12:46   ` Yong Zhang [this message]
2011-01-11 13:42     ` Bharata B Rao
2011-01-11 14:00       ` Yong Zhang
2011-01-12  7:49         ` Bharata B Rao
2011-01-12  9:17           ` Yong Zhang
2011-01-12 11:18           ` Peter Zijlstra
2011-01-12 23:16             ` Paul E. McKenney
2011-01-13  1:24               ` Yong Zhang
2011-01-18 19:04   ` [tip:sched/urgent] " tip-bot for Bharata B Rao
2011-01-11 10:12 ` [PATCH -tip 2/2] sched: Display autogroup " Bharata B Rao
2011-01-18 19:05   ` [tip:sched/urgent] " tip-bot for Bharata B Rao
2011-01-11 10:29 ` [PATCH -tip 0/2] sched: Get group names back in /proc/sched_debug - v1 Mike Galbraith

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