linux-kernel - Re: [PATCHv3] x86/intel_rdt: Add cpus

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Date:   Mon, 10 Apr 2017 11:45:21 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Jiri Olsa <jolsa@...hat.com>
cc:     Fenghua Yu <fenghua.yu@...el.com>, Jiri Olsa <jolsa@...nel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Mike Galbraith <efault@....de>, Shaohua Li <shli@...com>,
        lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCHv3] x86/intel_rdt: Add cpus_list rdtgroup file

On Mon, 10 Apr 2017, Jiri Olsa wrote:
>  /* List of all resource groups */
>  extern struct list_head rdt_all_groups;
>  
> @@ -56,6 +59,7 @@ struct rftype {
>  	char			*name;
>  	umode_t			mode;
>  	struct kernfs_ops	*kf_ops;
> +	unsigned long		flags;

Lacks update in the kernel-doc comment.

> @@ -182,9 +189,10 @@ static int rdtgroup_cpus_show(struct kernfs_open_file *of,
>  
>  	rdtgrp = rdtgroup_kn_lock_live(of->kn);
>  
> -	if (rdtgrp)
> -		seq_printf(s, "%*pb\n", cpumask_pr_args(&rdtgrp->cpu_mask));
> -	else
> +	if (rdtgrp) {
> +		seq_printf(s, is_list(of) ? "%*pbl\n" : "%*pb\n",
> +			   cpumask_pr_args(&rdtgrp->cpu_mask));
> +	} else
>  		ret = -ENOENT;

This lacks braces around the else path

> @@ -473,6 +485,14 @@ static int rdtgroup_tasks_show(struct kernfs_open_file *of,
>  		.seq_show	= rdtgroup_cpus_show,
>  	},
>  	{
> +		.name		= "cpus_list",
> +		.mode		= 0644,
> +		.kf_ops		= &rdtgroup_kf_single_ops,
> +		.write		= rdtgroup_cpus_write,
> +		.seq_show	= rdtgroup_cpus_show,
> +		.flags		= RFTYPE_FLAGS_CPUS_LIST,
> +	},

Please add the new file to Documentation/x86/intel_rdt_ui.txt

Thanks,

	tglx