Commit-ID: 35fe723bda12c25f4ac20a4fb91e345cacf568f7
Gitweb: http://git.kernel.org/tip/35fe723bda12c25f4ac20a4fb91e345cacf568f7
Author: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
AuthorDate: Tue, 27 Jun 2017 17:41:25 -0700
Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
CommitDate: Thu, 17 Aug 2017 07:26:23 -0700
rcu/tracing: Set disable_rcu_irq_enter on rcu_eqs_exit()
Set disable_rcu_irq_enter on not only rcu_eqs_enter_common() but also
rcu_eqs_exit(), since rcu_eqs_exit() suffers from the same issue as was
fixed for rcu_eqs_enter_common() by commit 03ecd3f48e57 ("rcu/tracing:
Add rcu_disabled to denote when rcu_irq_enter() will not work").
Signed-off-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Acked-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx>
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
---
kernel/rcu/tree.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index c1442be..2b37f1a 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -955,8 +955,10 @@ static void rcu_eqs_exit(bool user)
if (oldval & DYNTICK_TASK_NEST_MASK) {
rdtp->dynticks_nesting += DYNTICK_TASK_NEST_VALUE;
} else {
+ __this_cpu_inc(disable_rcu_irq_enter);
rdtp->dynticks_nesting = DYNTICK_TASK_EXIT_IDLE;
rcu_eqs_exit_common(oldval, user);
+ __this_cpu_dec(disable_rcu_irq_enter);
}
}
--
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