diff options
| -rw-r--r-- | include/linux/rcupdate.h | 4 | ||||
| -rw-r--r-- | include/trace/events/rcu.h | 4 | ||||
| -rw-r--r-- | kernel/rcu/Kconfig | 13 | ||||
| -rw-r--r-- | kernel/rcu/Makefile | 1 | ||||
| -rw-r--r-- | kernel/rcu/rcu.h | 2 | ||||
| -rw-r--r-- | kernel/rcu/update.c | 2 | ||||
| -rw-r--r-- | kernel/sysctl.c | 2 |
7 files changed, 14 insertions, 14 deletions
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index 0b7506330c87..70a41cd8f58d 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -167,7 +167,7 @@ do { \ * TREE_RCU and rcu_barrier_() primitives in TINY_RCU. */ -#if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) +#if defined(CONFIG_TREE_RCU) #include <linux/rcutree.h> #elif defined(CONFIG_TINY_RCU) #include <linux/rcutiny.h> @@ -601,7 +601,7 @@ do { \ * read-side critical section that would block in a !PREEMPT kernel. * But if you want the full story, read on! * - * In non-preemptible RCU implementations (TREE_RCU and TINY_RCU), + * In non-preemptible RCU implementations (pure TREE_RCU and TINY_RCU), * it is illegal to block while in an RCU read-side critical section. * In preemptible RCU implementations (PREEMPT_RCU) in CONFIG_PREEMPTION * kernel builds, RCU read-side critical sections may be preempted, diff --git a/include/trace/events/rcu.h b/include/trace/events/rcu.h index 66122602bd08..85019cf4ed6c 100644 --- a/include/trace/events/rcu.h +++ b/include/trace/events/rcu.h @@ -41,7 +41,7 @@ TRACE_EVENT(rcu_utilization, TP_printk("%s", __entry->s) ); -#if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) +#if defined(CONFIG_TREE_RCU) /* * Tracepoint for grace-period events. Takes a string identifying the @@ -432,7 +432,7 @@ TRACE_EVENT_RCU(rcu_fqs, __entry->cpu, __entry->qsevent) ); -#endif /* #if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) */ +#endif /* #if defined(CONFIG_TREE_RCU) */ /* * Tracepoint for dyntick-idle entry/exit events. These take a string diff --git a/kernel/rcu/Kconfig b/kernel/rcu/Kconfig index 7644eda17d62..0303934e6ef0 100644 --- a/kernel/rcu/Kconfig +++ b/kernel/rcu/Kconfig @@ -7,7 +7,7 @@ menu "RCU Subsystem" config TREE_RCU bool - default y if !PREEMPTION && SMP + default y if SMP help This option selects the RCU implementation that is designed for very large SMP system with hundreds or @@ -17,6 +17,7 @@ config TREE_RCU config PREEMPT_RCU bool default y if PREEMPTION + select TREE_RCU help This option selects the RCU implementation that is designed for very large SMP systems with hundreds or @@ -78,7 +79,7 @@ config TASKS_RCU user-mode execution as quiescent states. config RCU_STALL_COMMON - def_bool ( TREE_RCU || PREEMPT_RCU ) + def_bool TREE_RCU help This option enables RCU CPU stall code that is common between the TINY and TREE variants of RCU. The purpose is to allow @@ -86,13 +87,13 @@ config RCU_STALL_COMMON making these warnings mandatory for the tree variants. config RCU_NEED_SEGCBLIST - def_bool ( TREE_RCU || PREEMPT_RCU || TREE_SRCU ) + def_bool ( TREE_RCU || TREE_SRCU ) config RCU_FANOUT int "Tree-based hierarchical RCU fanout value" range 2 64 if 64BIT range 2 32 if !64BIT - depends on (TREE_RCU || PREEMPT_RCU) && RCU_EXPERT + depends on TREE_RCU && RCU_EXPERT default 64 if 64BIT default 32 if !64BIT help @@ -112,7 +113,7 @@ config RCU_FANOUT_LEAF int "Tree-based hierarchical RCU leaf-level fanout value" range 2 64 if 64BIT range 2 32 if !64BIT - depends on (TREE_RCU || PREEMPT_RCU) && RCU_EXPERT + depends on TREE_RCU && RCU_EXPERT default 16 help This option controls the leaf-level fanout of hierarchical @@ -187,7 +188,7 @@ config RCU_BOOST_DELAY config RCU_NOCB_CPU bool "Offload RCU callback processing from boot-selected CPUs" - depends on TREE_RCU || PREEMPT_RCU + depends on TREE_RCU depends on RCU_EXPERT || NO_HZ_FULL default n help diff --git a/kernel/rcu/Makefile b/kernel/rcu/Makefile index 020e8b6a644b..82d5fba48b2f 100644 --- a/kernel/rcu/Makefile +++ b/kernel/rcu/Makefile @@ -9,6 +9,5 @@ obj-$(CONFIG_TINY_SRCU) += srcutiny.o obj-$(CONFIG_RCU_TORTURE_TEST) += rcutorture.o obj-$(CONFIG_RCU_PERF_TEST) += rcuperf.o obj-$(CONFIG_TREE_RCU) += tree.o -obj-$(CONFIG_PREEMPT_RCU) += tree.o obj-$(CONFIG_TINY_RCU) += tiny.o obj-$(CONFIG_RCU_NEED_SEGCBLIST) += rcu_segcblist.o diff --git a/kernel/rcu/rcu.h b/kernel/rcu/rcu.h index ab504fbc76ca..eabafde2349e 100644 --- a/kernel/rcu/rcu.h +++ b/kernel/rcu/rcu.h @@ -454,7 +454,7 @@ enum rcutorture_type { INVALID_RCU_FLAVOR }; -#if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) +#if defined(CONFIG_TREE_RCU) void rcutorture_get_gp_data(enum rcutorture_type test_type, int *flags, unsigned long *gp_seq); void do_trace_rcu_torture_read(const char *rcutorturename, diff --git a/kernel/rcu/update.c b/kernel/rcu/update.c index 1861103662db..34a7452b25fd 100644 --- a/kernel/rcu/update.c +++ b/kernel/rcu/update.c @@ -435,7 +435,7 @@ struct debug_obj_descr rcuhead_debug_descr = { EXPORT_SYMBOL_GPL(rcuhead_debug_descr); #endif /* #ifdef CONFIG_DEBUG_OBJECTS_RCU_HEAD */ -#if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) || defined(CONFIG_RCU_TRACE) +#if defined(CONFIG_TREE_RCU) || defined(CONFIG_RCU_TRACE) void do_trace_rcu_torture_read(const char *rcutorturename, struct rcu_head *rhp, unsigned long secs, unsigned long c_old, unsigned long c) diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 70665934d53e..d396aaaf19a3 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -1268,7 +1268,7 @@ static struct ctl_table kern_table[] = { .proc_handler = proc_do_static_key, }, #endif -#if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) +#if defined(CONFIG_TREE_RCU) { .procname = "panic_on_rcu_stall", .data = &sysctl_panic_on_rcu_stall, |