diff options
Diffstat (limited to 'kernel/rcu/tree.c')
| -rw-r--r-- | kernel/rcu/tree.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 65137bc28b2b..1c58cbd03922 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -1178,9 +1178,11 @@ static void rcu_check_gp_kthread_starvation(struct rcu_state *rsp) j = jiffies; gpa = READ_ONCE(rsp->gp_activity); if (j - gpa > 2 * HZ) - pr_err("%s kthread starved for %ld jiffies! g%lu c%lu f%#x\n", + pr_err("%s kthread starved for %ld jiffies! g%lu c%lu f%#x s%d ->state=%#lx\n", rsp->name, j - gpa, - rsp->gpnum, rsp->completed, rsp->gp_flags); + rsp->gpnum, rsp->completed, + rsp->gp_flags, rsp->gp_state, + rsp->gp_kthread ? rsp->gp_kthread->state : 0); } /* @@ -2041,6 +2043,7 @@ static int __noreturn rcu_gp_kthread(void *arg) wait_event_interruptible(rsp->gp_wq, READ_ONCE(rsp->gp_flags) & RCU_GP_FLAG_INIT); + rsp->gp_state = RCU_GP_DONE_GPS; /* Locking provides needed memory barrier. */ if (rcu_gp_init(rsp)) break; @@ -2073,6 +2076,7 @@ static int __noreturn rcu_gp_kthread(void *arg) (!READ_ONCE(rnp->qsmask) && !rcu_preempt_blocked_readers_cgp(rnp)), j); + rsp->gp_state = RCU_GP_DONE_FQS; /* Locking provides needed memory barriers. */ /* If grace period done, leave loop. */ if (!READ_ONCE(rnp->qsmask) && @@ -2110,7 +2114,9 @@ static int __noreturn rcu_gp_kthread(void *arg) } /* Handle grace-period end. */ + rsp->gp_state = RCU_GP_CLEANUP; rcu_gp_cleanup(rsp); + rsp->gp_state = RCU_GP_CLEANED; } } |