diff options
| author | Paul E. McKenney | 2019-08-12 16:14:00 -0700 |
|---|---|---|
| committer | Paul E. McKenney | 2019-10-28 07:02:21 -0700 |
| commit | 66e4c33b51bc515ca803c0948cf1525b53ffd631 (patch) | |
| tree | 7c50562b611dd88b63531bd2548fd669e7e8c4c3 /crypto/cfb.c | |
| parent | 79ba7ff5a9925f5c170f51ed7a96d1475eb6c27f (diff) | |
rcu: Force tick on for nohz_full CPUs not reaching quiescent states
CPUs running for long time periods in the kernel in nohz_full mode
might leave the scheduling-clock interrupt disabled for then full
duration of their in-kernel execution. This can (among other things)
delay grace periods. This commit therefore forces the tick back on
for any nohz_full CPU that is failing to pass through a quiescent state
upon return from interrupt, which the resched_cpu() will induce.
Reported-by: Joel Fernandes <joel@joelfernandes.org>
[ paulmck: Clear ->rcu_forced_tick as reported by Joel Fernandes testing. ]
[ paulmck: Apply Joel Fernandes TICK_DEP_MASK_RCU->TICK_DEP_BIT_RCU fix. ]
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'crypto/cfb.c')
0 files changed, 0 insertions, 0 deletions