[igt-dev] [PATCH igt] igt/perf_pmu: Skip hotplugging cpu0
Tvrtko Ursulin
tvrtko.ursulin at linux.intel.com
Tue Feb 13 16:18:40 UTC 2018
On 13/02/2018 16:05, Chris Wilson wrote:
> It is a known issue that some "commodity" machines fail when asked to
> hotplug CPU0, so don't.
>
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> --
> Tvrtko, is it just this simple? Or do we need to avoid the physical
> package?
Problem is it makes the test pointless since it is never able to kick
the PMU off CPU0.
Regards,
Tvrtko
> -Chris
> ---
> tests/perf_pmu.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tests/perf_pmu.c b/tests/perf_pmu.c
> index a7501ca5..e9ce2881 100644
> --- a/tests/perf_pmu.c
> +++ b/tests/perf_pmu.c
> @@ -982,7 +982,7 @@ static void cpu_hotplug(int gem_fd)
> * this has not affected busyness stats in the parent.
> */
> igt_fork(child, 1) {
> - int cpu = 0;
> + int cpu = 1;
>
> close(link[0]);
>
>
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