diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/Kconfig.preempt | 4 | ||||
| -rw-r--r-- | kernel/sched.c | 19 |
2 files changed, 3 insertions, 20 deletions
diff --git a/kernel/Kconfig.preempt b/kernel/Kconfig.preempt index 4420ef427f8..0669b70fa6a 100644 --- a/kernel/Kconfig.preempt +++ b/kernel/Kconfig.preempt @@ -52,10 +52,6 @@ config PREEMPT endchoice -config PREEMPT_BKL - def_bool y - depends on SMP || PREEMPT - config RCU_TRACE bool "Enable tracing for RCU - currently stats in debugfs" select DEBUG_FS diff --git a/kernel/sched.c b/kernel/sched.c index 22712b2e058..629614ad035 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -3955,10 +3955,9 @@ EXPORT_SYMBOL(schedule); asmlinkage void __sched preempt_schedule(void) { struct thread_info *ti = current_thread_info(); -#ifdef CONFIG_PREEMPT_BKL struct task_struct *task = current; int saved_lock_depth; -#endif + /* * If there is a non-zero preempt_count or interrupts are disabled, * we do not want to preempt the current task. Just return.. @@ -3974,14 +3973,10 @@ asmlinkage void __sched preempt_schedule(void) * clear ->lock_depth so that schedule() doesnt * auto-release the semaphore: */ -#ifdef CONFIG_PREEMPT_BKL saved_lock_depth = task->lock_depth; task->lock_depth = -1; -#endif schedule(); -#ifdef CONFIG_PREEMPT_BKL task->lock_depth = saved_lock_depth; -#endif sub_preempt_count(PREEMPT_ACTIVE); /* @@ -4002,10 +3997,9 @@ EXPORT_SYMBOL(preempt_schedule); asmlinkage void __sched preempt_schedule_irq(void) { struct thread_info *ti = current_thread_info(); -#ifdef CONFIG_PREEMPT_BKL struct task_struct *task = current; int saved_lock_depth; -#endif + /* Catch callers which need to be fixed */ BUG_ON(ti->preempt_count || !irqs_disabled()); @@ -4017,16 +4011,12 @@ asmlinkage void __sched preempt_schedule_irq(void) * clear ->lock_depth so that schedule() doesnt * auto-release the semaphore: */ -#ifdef CONFIG_PREEMPT_BKL saved_lock_depth = task->lock_depth; task->lock_depth = -1; -#endif local_irq_enable(); schedule(); local_irq_disable(); -#ifdef CONFIG_PREEMPT_BKL task->lock_depth = saved_lock_depth; -#endif sub_preempt_count(PREEMPT_ACTIVE); /* @@ -5241,11 +5231,8 @@ void __cpuinit init_idle(struct task_struct *idle, int cpu) spin_unlock_irqrestore(&rq->lock, flags); /* Set the preempt count _outside_ the spinlocks! */ -#if defined(CONFIG_PREEMPT) && !defined(CONFIG_PREEMPT_BKL) - task_thread_info(idle)->preempt_count = (idle->lock_depth >= 0); -#else task_thread_info(idle)->preempt_count = 0; -#endif + /* * The idle tasks have their own, simple scheduling class: */ |