diff options
| -rw-r--r-- | kernel/rcu/refscale.c | 66 |
1 files changed, 65 insertions, 1 deletions
diff --git a/kernel/rcu/refscale.c b/kernel/rcu/refscale.c index 19841704d8f5..f956e0b3c097 100644 --- a/kernel/rcu/refscale.c +++ b/kernel/rcu/refscale.c @@ -629,6 +629,70 @@ static const struct ref_scale_ops jiffies_ops = { .name = "jiffies" }; +static void ref_irq_section(const int nloops) +{ + int i; + + preempt_disable(); + for (i = nloops; i >= 0; i--) { + local_irq_disable(); + local_irq_enable(); + } + preempt_enable(); +} + +static void ref_irq_delay_section(const int nloops, const int udl, const int ndl) +{ + int i; + + preempt_disable(); + for (i = nloops; i >= 0; i--) { + local_irq_disable(); + un_delay(udl, ndl); + local_irq_enable(); + } + preempt_enable(); +} + +static const struct ref_scale_ops irq_ops = { + .readsection = ref_irq_section, + .delaysection = ref_irq_delay_section, + .name = "irq" +}; + +static void ref_irqsave_section(const int nloops) +{ + unsigned long flags; + int i; + + preempt_disable(); + for (i = nloops; i >= 0; i--) { + local_irq_save(flags); + local_irq_restore(flags); + } + preempt_enable(); +} + +static void ref_irqsave_delay_section(const int nloops, const int udl, const int ndl) +{ + unsigned long flags; + int i; + + preempt_disable(); + for (i = nloops; i >= 0; i--) { + local_irq_save(flags); + un_delay(udl, ndl); + local_irq_restore(flags); + } + preempt_enable(); +} + +static const struct ref_scale_ops irqsave_ops = { + .readsection = ref_irqsave_section, + .delaysection = ref_irqsave_delay_section, + .name = "irqsave" +}; + //////////////////////////////////////////////////////////////////////// // // Methods leveraging SLAB_TYPESAFE_BY_RCU. @@ -1165,7 +1229,7 @@ ref_scale_init(void) static const struct ref_scale_ops *scale_ops[] = { &rcu_ops, &srcu_ops, &srcu_fast_ops, RCU_TRACE_OPS RCU_TASKS_OPS &refcnt_ops, &rwlock_ops, &rwsem_ops, &lock_ops, &lock_irq_ops, - &acqrel_ops, &sched_clock_ops, &clock_ops, &jiffies_ops, + &acqrel_ops, &sched_clock_ops, &clock_ops, &jiffies_ops, &irq_ops, &irqsave_ops, &typesafe_ref_ops, &typesafe_lock_ops, &typesafe_seqlock_ops, }; |