Re: [PATCH RT 2/2][RFC] let RCU stall messages escape with CONFIG_PREEMPT_RT_FULL
From: Frank Rowand <hidden>
Date: 2012-12-10 19:09:04
Also in:
linux-arm-kernel, lkml
From: Frank Rowand <hidden>
Date: 2012-12-10 19:09:04
Also in:
linux-arm-kernel, lkml
On 12/10/12 06:29, Paul E. McKenney wrote:
On Tue, Dec 04, 2012 at 08:52:21PM -0800, Frank Rowand wrote:quoted
The printk()s in RCU stall warnings do not get flushed to the console on ARM. Add the oops_in_progress flag back into the special trylock case in console_trylock_for_printk(), and set the flag using "bust_spinlocks(1)". This allows the printk() output to be flushed to the console. Signed-off-by: Frank Rowand <redacted>Is bust_spinlocks(1) appropriate for all architectures, or should this be conditioned on architectures that need oops_in_progress to be set? Thanx, Paul
Good question. I don't know if the architectures that do not set oops_in_progress do not need it, or if they just overlooked it. I'll have to look a little bit deeper. -Frank