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SubjectRe: [PATCH] CPU hotplug, freezer: Fix bugs in CPU hotplug call path
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On Mon, 2011-10-03 at 01:14 +0530, Srivatsa S. Bhat wrote:
> +static atomic_t tasks_frozen = ATOMIC_INIT(0);
> +
> +void set_tasks_frozen_flag(void)
> +{
> + atomic_set(&tasks_frozen, 1);
> +}
> +
> +void clear_tasks_frozen_flag(void)
> +{
> + atomic_set(&tasks_frozen, 0);
> +}
> +
> +int tasks_are_frozen(void)
> +{
> + int ret;
> + ret = atomic_read(&tasks_frozen);
> + return ret;
> +}

What's the point of using atomic_t here? Neither set nor read are
actually atomic ops.


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