diff options
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/tasks.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/kernel/rcu/tasks.h b/kernel/rcu/tasks.h index ad8c4f3f44d2..2b4df237b598 100644 --- a/kernel/rcu/tasks.h +++ b/kernel/rcu/tasks.h @@ -83,7 +83,7 @@ static struct rcu_tasks rt_name = \ DEFINE_STATIC_SRCU(tasks_rcu_exit_srcu); /* Avoid IPIing CPUs early in the grace period. */ -#define RCU_TASK_IPI_DELAY (HZ / 2) +#define RCU_TASK_IPI_DELAY (IS_ENABLED(CONFIG_TASKS_TRACE_RCU_READ_MB) ? HZ / 2 : 0) static int rcu_task_ipi_delay __read_mostly = RCU_TASK_IPI_DELAY; module_param(rcu_task_ipi_delay, int, 0644); @@ -916,7 +916,8 @@ static void trc_wait_for_one_reader(struct task_struct *t, // If currently running, send an IPI, either way, add to list. trc_add_holdout(t, bhp); - if (task_curr(t) && time_after(jiffies, rcu_tasks_trace.gp_start + rcu_task_ipi_delay)) { + if (task_curr(t) && + time_after(jiffies + 1, rcu_tasks_trace.gp_start + rcu_task_ipi_delay)) { // The task is currently running, so try IPIing it. cpu = task_cpu(t); |