Messages in this thread | | | Date | Mon, 02 Feb 2015 12:06:02 +0800 | From | ethan zhao <> | Subject | Re: [PATCH Resend] cpufreq: Set cpufreq_cpu_data to NULL before putting kobject |
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On 2015/2/2 11:59, Viresh Kumar wrote: > On 2 February 2015 at 09:26, ethan zhao <ethan.zhao@oracle.com> wrote: >> How to prevent the policy to be freed between >> >> cpufreq_cpu_get() and cpufreq_cpu_put() ? > kobject_get() increases the reference count of a policy and the policy > will only be freed when this is zero. And it will only be zero once all > cpufreq_cpu_get() are matched with corresponding cpufreq_cpu_put(). Is that an idea it supposed to be or fact ?
if (!cpufreq_suspended) cpufreq_policy_free(policy);
static void cpufreq_policy_free(struct cpufreq_policy *policy) { free_cpumask_var(policy->related_cpus); free_cpumask_var(policy->cpus); kfree(policy); }
It seems you just think about it ideally in mind.
Thanks, Ethan > >> You are maxing up the water with sand ? > :)
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