Re: [PATCH v2] sched/topology: Allow sched_asym_cpucapacity to be disabled

On 15/10/2019 11:40, Quentin Perret wrote:

...

@@ -2124,8 +2124,17 @@ static void detach_destroy_domains(const struct cpumask *cpu_map) int i; rcu_read_lock();

• if (static_key_enabled(&sched_asym_cpucapacity)) {

• unsigned int cpu = cpumask_any(cpu_map);
  

• if (rcu_dereference(per_cpu(sd_asym_cpucapacity, cpu)))
  

• 	static_branch_dec_cpuslocked(&sched_asym_cpucapacity);
  

Lockdep should scream for this :)

Bleh, yes indeed...

...

• }
• for_each_cpu(i, cpu_map) cpu_attach_domain(NULL, &def_root_domain, i);
• rcu_read_unlock();

} -- 2.22.0