linux-kernel - Re: [PATCH] perf: fix topology test on systems with sparse CPUs

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Message-ID: <20170130184915.GC28444@krava>
Date:   Mon, 30 Jan 2017 19:49:15 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Jan Stancek <jstancek@...hat.com>
Cc:     linux-kernel@...r.kernel.org, peterz@...radead.org,
        mingo@...hat.com, acme@...nel.org,
        alexander.shishkin@...ux.intel.com, jolsa@...nel.org,
        mhiramat@...nel.org, rui.teng@...ux.vnet.ibm.com,
        sukadev@...ux.vnet.ibm.com
Subject: Re: [PATCH] perf: fix topology test on systems with sparse CPUs

On Mon, Jan 30, 2017 at 05:53:34PM +0100, Jan Stancek wrote:
> Topology test fails on systems with sparse CPUs, e.g.

SNIP

>  
> -	for (i = 0; i < nr; i++) {
> -		ret = build_cpu_topo(tp, i);
> +	for (i = 0; i < tp->cpu_nr; i++) {
> +		cpu = map->map[i];

no need for cpu variable

jirka

> +		ret = build_cpu_topo(tp, cpu);
>  		if (ret < 0)
>  			break;