diff options
| author | Paul E. McKenney <paulmck@kernel.org> | 2024-10-09 11:02:51 -0700 |
|---|---|---|
| committer | Frederic Weisbecker <frederic@kernel.org> | 2024-11-12 23:04:50 +0100 |
| commit | 046c06f5ba97b31da189396e922ebff3f502518e (patch) | |
| tree | 59735fe4b7557444d5b2f99385ff64d0e9de3520 /kernel/rcu | |
| parent | 32693634cdf90e56bd167e5226db7ca569707437 (diff) | |
refscale: Correct affinity check
The current affinity check works fine until there are more reader
processes than CPUs, at which point the affinity check is looking for
non-existent CPUs. This commit therefore applies the same modulus to
the check as is present in the set_cpus_allowed_ptr() call.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Neeraj Upadhyay <Neeraj.Upadhyay@amd.com>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/refscale.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/rcu/refscale.c b/kernel/rcu/refscale.c index 0db9db73f57f..25910ebe95c0 100644 --- a/kernel/rcu/refscale.c +++ b/kernel/rcu/refscale.c @@ -829,7 +829,7 @@ repeat: goto end; // Make sure that the CPU is affinitized appropriately during testing. - WARN_ON_ONCE(raw_smp_processor_id() != me); + WARN_ON_ONCE(raw_smp_processor_id() != me % nr_cpu_ids); WRITE_ONCE(rt->start_reader, 0); if (!atomic_dec_return(&n_started)) |