Re: [PATCH 13/52] perf tools: Add perf_pmu__scan_file()

[Jiri Olsa]

On Tue, Jul 22, 2014 at 04:17:22PM +0300, Adrian Hunter wrote:

SNIP

> +
> +static FILE *perf_pmu__open_file(struct perf_pmu *pmu, const char *name)
> +{
> +	struct stat st;
> +	char path[PATH_MAX];
> +	const char *sysfs;
> +
> +	sysfs = sysfs__mountpoint();
> +	if (!sysfs)
> +		return NULL;
> +
> +	snprintf(path, PATH_MAX,
> +		 "%s" EVENT_SOURCE_DEVICE_PATH "%s/%s", sysfs, pmu->name, name);
> +
> +	if (stat(path, &st) < 0)
> +		return NULL;
> +
> +	return fopen(path, "r");
> +}

looks like this function could be used in pmu_cpumask and pmu_type
and maybe others

jirka
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