Subject: rcu: Disable RCU_FAST_NO_HZ on RT From: Thomas Gleixner Date: Sun, 28 Oct 2012 13:26:09 +0000 This uses a timer_list timer from the irq disabled guts of the idle code. Disable it for now to prevent wreckage. Signed-off-by: Thomas Gleixner Cc: stable-rt@vger.kernel.org --- init/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Index: linux-stable/init/Kconfig =================================================================== --- linux-stable.orig/init/Kconfig +++ linux-stable/init/Kconfig @@ -504,7 +504,7 @@ config RCU_FANOUT_EXACT config RCU_FAST_NO_HZ bool "Accelerate last non-dyntick-idle CPU's grace periods" - depends on NO_HZ && SMP + depends on NO_HZ && SMP && !PREEMPT_RT_FULL default n help This option causes RCU to attempt to accelerate grace periods