Re: [PATCH arm 1/1] arm: Use _rcuidle tracepoint to allow use from idle

Steven Rostedt
2016-04-26T20:52:23Z

On Tue, 26 Apr 2016 13:46:15 -0700
Tony Lindgren <tony@atomide.com> wrote:

> [ INFO: suspicious RCU usage. ]
> 4.6.0-rc5-next-20160426+ #1127 Not tainted
> -------------------------------
> include/trace/events/clk.h:45 suspicious rcu_dereference_check() usage!
>
> other info that might help us debug this:
>
>
> RCU used illegally from idle CPU!
> rcu_scheduler_active = 1, debug_locks = 0
> RCU used illegally from extended quiescent state!
> 2 locks held by swapper/0/0:
> #0: (&oh->hwmod_key#30){......}, at: [<c0121afc>] omap_hwmod_enable+0x18/0x44
> #1: (enable_lock){......}, at: [<c0630684>] clk_enable_lock+0x18/0x124
>

Hah! I knew that mole would show up.

-- Steve