Re: [patch 13/15] sched: add exports tracking cfs bandwidth controlstatistics

[Hidetoshi Seto]

(2011/05/03 18:28), Paul Turner wrote:
> From: Nikhil Rao <ncrao@xxxxxxxxxx>
> 
> This change introduces statistics exports for the cpu sub-system, these are
> added through the use of a stat file similar to that exported by other
> subsystems.
> 
> The following exports are included:
> 
> nr_periods:	number of periods in which execution occurred
> nr_throttled:	the number of periods above in which execution was throttle
> throttled_time:	cumulative wall-time that any cpus have been throttled for
> this group
> 
> Signed-off-by: Nikhil Rao <ncrao@xxxxxxxxxx>
> Signed-off-by: Paul Turner <pjt@xxxxxxxxxx>
> Signed-off-by: Bharata B Rao <bharata@xxxxxxxxxxxxxxxxxx>
> ---
>  kernel/sched.c      |   22 ++++++++++++++++++++++
>  kernel/sched_fair.c |    9 +++++++++
>  2 files changed, 31 insertions(+)
> 
> Index: tip/kernel/sched.c
> ===================================================================
> --- tip.orig/kernel/sched.c
> +++ tip/kernel/sched.c
> @@ -260,6 +260,10 @@ struct cfs_bandwidth {
>  	struct hrtimer period_timer;
>  	struct list_head throttled_cfs_rq;
>  
> +	/* statistics */
> +	int nr_periods, nr_throttled;
> +	u64 throttled_time;
> +
>  #endif
>  };
>  

Nit: blank line?

Reviewed-by: Hidetoshi Seto <seto.hidetoshi@xxxxxxxxxxxxxx>

Thanks,
H.Seto

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