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locking/percpu-rwsem, lockdep: Make percpu-rwsem use its own lockdep_map

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As preparation for replacing the embedded rwsem, give percpu-rwsem its
own lockdep_map.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Davidlohr Bueso <dbueso@suse.de>
Acked-by: Will Deacon <will@kernel.org>
Acked-by: Waiman Long <longman@redhat.com>
Tested-by: Juri Lelli <juri.lelli@redhat.com>
Link: https://lkml.kernel.org/r/20200131151539.927625541@infradead.org
This commit is contained in:
Peter Zijlstra
2019-10-30 20:01:26 +01:00
committed by Ingo Molnar
parent 810507fe6f
commit 1751060e25
5 changed files with 37 additions and 18 deletions
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4
kernel/cpu.c
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@@ -331,12 +331,12 @@ void lockdep_assert_cpus_held(void)
static void lockdep_acquire_cpus_lock(void)
{
rwsem_acquire(&cpu_hotplug_lock.rw_sem.dep_map, 0, 0, _THIS_IP_);
rwsem_acquire(&cpu_hotplug_lock.dep_map, 0, 0, _THIS_IP_);
}
static void lockdep_release_cpus_lock(void)
{
rwsem_release(&cpu_hotplug_lock.rw_sem.dep_map, _THIS_IP_);
rwsem_release(&cpu_hotplug_lock.dep_map, _THIS_IP_);
}
/*