Commit 35fe723b authored Jun 27, 2017 by Masami Hiramatsu Committed by Paul E. McKenney Aug 17, 2017

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 03ecd3f4 ("rcu/tracing:
Add rcu_disabled to denote when rcu_irq_enter() will not work").

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

parent d8db2e86

kernel/rcu/tree.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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);
		}
		}