From 4eb065c1fc4ec01ed2b864a40ec7f0b9708557c4 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 24 Jul 2009 12:38:56 +0200 Subject: [PATCH 179/323] preempt: Provide preempt_*_(no)rt variants Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.215-rt107.tar.xz RT needs a few preempt_disable/enable points which are not necessary otherwise. Implement variants to avoid #ifdeffery. Signed-off-by: Thomas Gleixner --- include/linux/preempt.h | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/include/linux/preempt.h b/include/linux/preempt.h index 4d244e295e855..5ceac863e7298 100644 --- a/include/linux/preempt.h +++ b/include/linux/preempt.h @@ -188,7 +188,11 @@ do { \ preempt_count_dec(); \ } while (0) -#define preempt_enable_no_resched() sched_preempt_enable_no_resched() +#ifdef CONFIG_PREEMPT_RT +# define preempt_enable_no_resched() sched_preempt_enable_no_resched() +#else +# define preempt_enable_no_resched() preempt_enable() +#endif #define preemptible() (preempt_count() == 0 && !irqs_disabled()) @@ -282,6 +286,18 @@ do { \ set_preempt_need_resched(); \ } while (0) +#ifdef CONFIG_PREEMPT_RT +# define preempt_disable_rt() preempt_disable() +# define preempt_enable_rt() preempt_enable() +# define preempt_disable_nort() barrier() +# define preempt_enable_nort() barrier() +#else +# define preempt_disable_rt() barrier() +# define preempt_enable_rt() barrier() +# define preempt_disable_nort() preempt_disable() +# define preempt_enable_nort() preempt_enable() +#endif + #ifdef CONFIG_PREEMPT_NOTIFIERS struct preempt_notifier; -- 2.44.0