From 1268fbc746ea1cd279886a740dcbad4ba5232225 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Thu, 17 Nov 2011 18:48:14 +0100 Subject: nohz: Remove tick_nohz_idle_enter_norcu() / tick_nohz_idle_exit_norcu() Those two APIs were provided to optimize the calls of tick_nohz_idle_enter() and rcu_idle_enter() into a single irq disabled section. This way no interrupt happening in-between would needlessly process any RCU job. Now we are talking about an optimization for which benefits have yet to be measured. Let's start simple and completely decouple idle rcu and dyntick idle logics to simplify. Signed-off-by: Frederic Weisbecker Cc: Ingo Molnar Cc: Thomas Gleixner Cc: Peter Zijlstra Reviewed-by: Josh Triplett Signed-off-by: Paul E. McKenney --- arch/mips/kernel/process.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'arch/mips') diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c index 17fb3a27016..7955409051c 100644 --- a/arch/mips/kernel/process.c +++ b/arch/mips/kernel/process.c @@ -56,7 +56,8 @@ void __noreturn cpu_idle(void) /* endless idle loop with no priority at all */ while (1) { - tick_nohz_idle_enter_norcu(); + tick_nohz_idle_enter(); + rcu_idle_enter(); while (!need_resched() && cpu_online(cpu)) { #ifdef CONFIG_MIPS_MT_SMTC extern void smtc_idle_loop_hook(void); @@ -77,7 +78,8 @@ void __noreturn cpu_idle(void) system_state == SYSTEM_BOOTING)) play_dead(); #endif - tick_nohz_idle_exit_norcu(); + rcu_idle_exit(); + tick_nohz_idle_exit(); preempt_enable_no_resched(); schedule(); preempt_disable(); -- cgit v1.2.3-70-g09d2