Re: [PATCH -tip 1/2] [PATCH -tip 1/2] sched: Reinstate group namesin /proc/sched_debug.

[Yong Zhang]

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@xxxxxxxxxxxxxxxxxx>
> ---
>  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
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