Re: [PATCH] selftests: cpufreq: stop CPU hotplug loop after cpufreq update test

[Viresh Kumar]

On 10-10-26, 18:01, xiong yining wrote:
> Original test uses a fixed 5000 iteration loop to trigger CPU hotplug
> for verifying cpufreq synchronization between CPU hotplug and sysfs
> writes.
> 
> Two issues exist:
> 1. Background hotplug task keeps running after test completes, causing
> redundant CPU on/offline operations.
> 2. When cpufreq frequency setup is slow, the hotplug loop may exit
> before frequency updates finish, which breaks test purpose.
> 
> Introduce a file-based stop flag to control the infinite hotplug loop.
> After all cpufreq updates complete, create the stop flag file and
> wait for the hotplug task to exit.
> 
> This makes hotplug run only during cpufreq sysfs write test,
> align with test objective.
> 
> Signed-off-by: xiong yining <xiongyining1480@xxxxxxxxxxxxxx>
> ---
>  tools/testing/selftests/cpufreq/special-tests.sh | 12 +++++++++++-
>  1 file changed, 11 insertions(+), 1 deletion(-)

Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>

-- 
viresh