diff options
| author | Mike Galbraith <efault@gmx.de> | 2018-08-15 18:05:29 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2018-08-31 01:03:54 +0200 |
| commit | 894d45bbf7e7569ec2aa845155801fd503b5f1bf (patch) | |
| tree | ee371190b7bb7b90812b24360d839eb71681d470 /kernel/rcu/tree.h | |
| parent | rcu: Remove obsolete ->dynticks_fqs and ->cond_resched_completed (diff) | |
| download | linux-894d45bbf7e7569ec2aa845155801fd503b5f1bf.tar.xz linux-894d45bbf7e7569ec2aa845155801fd503b5f1bf.zip | |
rcu: Convert rcu_state.ofl_lock to raw_spinlock_t
1e64b15a4b10 ("rcu: Fix grace-period hangs due to race with CPU offline")
added spinlock_t ofl_lock to the rcu_state structure, then takes it with
preemption disabled during CPU offline, which gives the -rt patchset's
sleeping spinlock heartburn.
This commit therefore converts ->ofl_lock to raw_spinlock_t.
Signed-off-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Diffstat (limited to 'kernel/rcu/tree.h')
| -rw-r--r-- | kernel/rcu/tree.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h index bfbf97a1c29d..703e19ff532d 100644 --- a/kernel/rcu/tree.h +++ b/kernel/rcu/tree.h @@ -343,7 +343,7 @@ struct rcu_state { const char *name; /* Name of structure. */ char abbr; /* Abbreviated name. */ - spinlock_t ofl_lock ____cacheline_internodealigned_in_smp; + raw_spinlock_t ofl_lock ____cacheline_internodealigned_in_smp; /* Synchronize offline with */ /* GP pre-initialization. */ }; |