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SubjectRe: [patch 1/8] 2.6.22-rc3 perfmon2 : Barcelona CPU detection
On Wed, 20 Jun 2007, Robert Richter wrote:

> Index: linux-2.6.22-rc3/arch/x86_64/perfmon/perfmon_k8.c
> ===================================================================
> --- linux-2.6.22-rc3.orig/arch/x86_64/perfmon/perfmon_k8.c
> +++ linux-2.6.22-rc3/arch/x86_64/perfmon/perfmon_k8.c
> @@ -307,7 +307,12 @@ static int pfm_k8_probe_pmu(void)
> return -1;
> }
>
> - if (current_cpu_data.x86 != 15) {
> + switch (current_cpu_data.x86) {
> + case 15:
> + case 16:
> + PFM_INFO("found family=%d", current_cpu_data.x86);
> + break;
> + default:
> PFM_INFO("unsupported family=%d", current_cpu_data.x86);
> return -1;
> }

This still shouldn't be a switch clause because you're hiding the return
-1; in the default label. I think it would be better to write:

if (current_cpu_data.x86 == 15 || current_cpu_data.x86 == 16)
PFM_INFO("found family=%d", current_cpu_data.x86);
else {
PFM_INFO("unsupported family=%d", current_cpu_data.x86);
return -1;
}
-
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