Re: [PATCH 4/4] sched/cpuacct: Make user/system times in cpuacct.stat more precise

[Daniel Jordan]

Andrey Ryabinin <arbn@xxxxxxxxxxxxxxx> writes:
>  static int cpuacct_stats_show(struct seq_file *sf, void *v)
>  {
        ...
>  	for_each_possible_cpu(cpu) {
>  		u64 *cpustat = per_cpu_ptr(ca->cpustat, cpu)->cpustat;
>  
> -		val[CPUACCT_STAT_USER] += cpustat[CPUTIME_USER];
> -		val[CPUACCT_STAT_USER] += cpustat[CPUTIME_NICE];
> -		val[CPUACCT_STAT_SYSTEM] += cpustat[CPUTIME_SYSTEM];
> -		val[CPUACCT_STAT_SYSTEM] += cpustat[CPUTIME_IRQ];
> -		val[CPUACCT_STAT_SYSTEM] += cpustat[CPUTIME_SOFTIRQ];
> +		cputime.utime += cpustat[CPUTIME_USER];
> +		cputime.utime += cpustat[CPUTIME_NICE];
> +		cputime.stime += cpustat[CPUTIME_SYSTEM];
> +		cputime.stime += cpustat[CPUTIME_IRQ];
> +		cputime.stime += cpustat[CPUTIME_SOFTIRQ];
> +
> +		cputime.sum_exec_runtime += this_cpu_read(*ca->cpuusage);
>  	}

                cputime.sum_exec_runtime += *per_cpu_ptr(ca->cpuusage, cpu);

Or the stats can all be 0...