[Devel] Re: [ckrm-tech] Per container statistics (containerstats)

[Balbir Singh]

Balbir Singh wrote:
> Balbir Singh wrote:
>>>>  	return *(pid_t *)a - *(pid_t *)b;
>>>> diff -puN kernel/sched.c~containers-taskstats kernel/sched.c
>>>> --- linux-2.6.22-rc2-mm1/kernel/sched.c~containers-taskstats	2007-06-05 17:21:57.000000000 +0530
>>>> +++ linux-2.6.22-rc2-mm1-balbir/kernel/sched.c	2007-06-05 17:21:57.000000000 +0530
>>>> @@ -4280,11 +4280,13 @@ void __sched io_schedule(void)
>>>>  {
>>>>  	struct rq *rq = &__raw_get_cpu_var(runqueues);
>>>>  
>>>> +	delayacct_set_flag(DELAYACCT_PF_BLKIO);
>>>>  	delayacct_blkio_start();
>>> Would it be suitable and appropriate to embed the delayacct_set_flag() call
>>> inside delayacct_blkio_start()?
>>>
>> Yes, I should have done that, will do.
>>
>>
> 
> My last reply was wrong, the flag needs to be set outside so that we know the
> context that initiated block I/O. We use this flag to track the time used
> by the swap block I/O. 
> 

Please ignore this email.. it escaped my drafts folder... my fault.. apologies.

-- 
	Warm Regards,
	Balbir Singh
	Linux Technology Center
	IBM, ISTL