diff options
| author |   Thomas Gleixner <tglx@linutronix.de> | 2016-07-13 17:17:03 +0000 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2016-07-15 10:41:44 +0200 |
| commit | 4df8374254ea9294dfe4b8c447a1b7eddc543dbf (patch) | |
| tree | b2223178530e7c18e36caa40cfeb1780578d18d2 /include | |
| parent | KVM/arm/arm64/vgic-new: Convert to hotplug state machine (diff) | |
| download | linux-dev-4df8374254ea9294dfe4b8c447a1b7eddc543dbf.tar.xz linux-dev-4df8374254ea9294dfe4b8c447a1b7eddc543dbf.zip | |
rcu: Convert rcutree to hotplug state machine
Straight forward conversion to the state machine. Though the question arises
whether this needs really all these state transitions to work.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160713153337.982013161@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/cpuhotplug.h | 3 | ||||
| -rw-r--r-- | include/linux/rcutiny.h | 7 | ||||
| -rw-r--r-- | include/linux/rcutree.h | 7 |
3 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h index 544b5563720e..201a2e23bc49 100644 --- a/include/linux/cpuhotplug.h +++ b/include/linux/cpuhotplug.h @@ -20,11 +20,13 @@ enum cpuhp_state { CPUHP_X2APIC_PREPARE, CPUHP_SMPCFD_PREPARE, CPUHP_TIMERS_DEAD, + CPUHP_RCUTREE_PREP, CPUHP_NOTIFY_PREPARE, CPUHP_BRINGUP_CPU, CPUHP_AP_IDLE_DEAD, CPUHP_AP_OFFLINE, CPUHP_AP_SCHED_STARTING, + CPUHP_AP_RCUTREE_DYING, CPUHP_AP_IRQ_GIC_STARTING, CPUHP_AP_IRQ_GICV3_STARTING, CPUHP_AP_IRQ_HIP04_STARTING, @@ -80,6 +82,7 @@ enum cpuhp_state { CPUHP_AP_PERF_ARM_CCI_ONLINE, CPUHP_AP_PERF_ARM_CCN_ONLINE, CPUHP_AP_WORKQUEUE_ONLINE, + CPUHP_AP_RCUTREE_ONLINE, CPUHP_AP_NOTIFY_ONLINE, CPUHP_AP_ONLINE_DYN, CPUHP_AP_ONLINE_DYN_END = CPUHP_AP_ONLINE_DYN + 30, diff --git a/include/linux/rcutiny.h b/include/linux/rcutiny.h index 93aea75029fb..ac81e4063b40 100644 --- a/include/linux/rcutiny.h +++ b/include/linux/rcutiny.h @@ -243,4 +243,11 @@ static inline void rcu_all_qs(void) barrier(); /* Avoid RCU read-side critical sections leaking across. */ } +/* RCUtree hotplug events */ +#define rcutree_prepare_cpu NULL +#define rcutree_online_cpu NULL +#define rcutree_offline_cpu NULL +#define rcutree_dead_cpu NULL +#define rcutree_dying_cpu NULL + #endif /* __LINUX_RCUTINY_H */ diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h index 5043cb823fb2..63a4e4cf40a5 100644 --- a/include/linux/rcutree.h +++ b/include/linux/rcutree.h @@ -111,4 +111,11 @@ bool rcu_is_watching(void); void rcu_all_qs(void); +/* RCUtree hotplug events */ +int rcutree_prepare_cpu(unsigned int cpu); +int rcutree_online_cpu(unsigned int cpu); +int rcutree_offline_cpu(unsigned int cpu); +int rcutree_dead_cpu(unsigned int cpu); +int rcutree_dying_cpu(unsigned int cpu); + #endif /* __LINUX_RCUTREE_H */ |