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Groups > linux.kernel > #1676236
| From | Steven Rostedt <rostedt@goodmis.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [BUG] ftrace: WARNING: suspicious RCU usage |
| Date | 2017-06-28 01:00 +0200 |
| Message-ID | <tX7CF-71T-1@gated-at.bofh.it> (permalink) |
| References | <tWXjY-8qo-29@gated-at.bofh.it> <tWYJ4-14q-9@gated-at.bofh.it> <tWZc5-1gg-1@gated-at.bofh.it> <tX7CF-71T-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Wed, 28 Jun 2017 07:52:22 +0900
Masami Hiramatsu <mhiramat@kernel.org> wrote:
> diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
> index e354e47..442b409 100644
> --- a/kernel/rcu/tree.c
> +++ b/kernel/rcu/tree.c
> @@ -973,8 +973,10 @@ 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);
> }
> }
>
Looks like a good fix to me. Paul want to take this one?
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
-- Steve
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Re: [BUG] ftrace: WARNING: suspicious RCU usage Steven Rostedt <rostedt@goodmis.org> - 2017-06-27 15:30 +0200
Re: [BUG] ftrace: WARNING: suspicious RCU usage Masami Hiramatsu <mhiramat@kernel.org> - 2017-06-27 16:00 +0200
Re: [BUG] ftrace: WARNING: suspicious RCU usage Steven Rostedt <rostedt@goodmis.org> - 2017-06-28 01:00 +0200
Re: [BUG] ftrace: WARNING: suspicious RCU usage "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2017-06-28 02:50 +0200
Re: [BUG] ftrace: WARNING: suspicious RCU usage Masami Hiramatsu <mhiramat@kernel.org> - 2017-06-28 01:00 +0200
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