Re: [PATCH v3 2/6] xen/PMU: Sysfs interface for setting Xen PMU mode

[David Vrabel <david.vrabel@citrix.com>]

On 03/07/14 20:14, Boris Ostrovsky wrote:
> Set Xen's PMU mode via /sys/hypervisor/pmu/pmu_mode. Add XENPMU hypercall.
> 
[...]
> +static ssize_t pmu_mode_store(struct hyp_sysfs_attr *attr,
> +			      const char *buffer, size_t len)
> +{
> +	int ret;
> +	struct xen_pmu_params xp;
> +	int i;
> +
> +	for (i = 0; i < ARRAY_SIZE(pmu_modes); i++) {
> +		if (strncmp(buffer, pmu_modes[i].name,
> +			    strlen(pmu_modes[i].name)) == 0) {
> +			xp.val = pmu_modes[i].mode;
> +			break;
> +		}
> +	}

This looks like it would accept "office" as "off" (etc) which I don't
think it is what we want.  I assume the intention is to allow either
"off\n" or "off"?

David