diff options
Diffstat (limited to 'kernel/rcu/tree_exp.h')
| -rw-r--r-- | kernel/rcu/tree_exp.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/kernel/rcu/tree_exp.h b/kernel/rcu/tree_exp.h index dcbd75791f39..a72d16eb869e 100644 --- a/kernel/rcu/tree_exp.h +++ b/kernel/rcu/tree_exp.h @@ -485,6 +485,7 @@ static bool synchronize_rcu_expedited_wait_once(long tlimit) static void synchronize_rcu_expedited_wait(void) { int cpu; + unsigned long j; unsigned long jiffies_stall; unsigned long jiffies_start; unsigned long mask; @@ -496,7 +497,7 @@ static void synchronize_rcu_expedited_wait(void) trace_rcu_exp_grace_period(rcu_state.name, rcu_exp_gp_seq_endval(), TPS("startwait")); jiffies_stall = rcu_jiffies_till_stall_check(); jiffies_start = jiffies; - if (IS_ENABLED(CONFIG_NO_HZ_FULL)) { + if (tick_nohz_full_enabled() && rcu_inkernel_boot_has_ended()) { if (synchronize_rcu_expedited_wait_once(1)) return; rcu_for_each_leaf_node(rnp) { @@ -508,6 +509,10 @@ static void synchronize_rcu_expedited_wait(void) tick_dep_set_cpu(cpu, TICK_DEP_BIT_RCU_EXP); } } + j = READ_ONCE(jiffies_till_first_fqs); + if (synchronize_rcu_expedited_wait_once(j + HZ)) + return; + WARN_ON_ONCE(IS_ENABLED(CONFIG_PREEMPT_RT)); } for (;;) { |