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fedora core 6 1.2949 + vserver 2.2.0
[linux-2.6.git]
/
kernel
/
rcupdate.c
diff --git
a/kernel/rcupdate.c
b/kernel/rcupdate.c
index
523e464
..
3554b76
100644
(file)
--- a/
kernel/rcupdate.c
+++ b/
kernel/rcupdate.c
@@
-71,9
+71,6
@@
static DEFINE_PER_CPU(struct tasklet_struct, rcu_tasklet) = {NULL};
static int blimit = 10;
static int qhimark = 10000;
static int qlowmark = 100;
static int blimit = 10;
static int qhimark = 10000;
static int qlowmark = 100;
-#ifdef CONFIG_SMP
-static int rsinterval = 1000;
-#endif
static atomic_t rcu_barrier_cpu_count;
static DEFINE_MUTEX(rcu_barrier_mutex);
static atomic_t rcu_barrier_cpu_count;
static DEFINE_MUTEX(rcu_barrier_mutex);
@@
-86,8
+83,8
@@
static void force_quiescent_state(struct rcu_data *rdp,
int cpu;
cpumask_t cpumask;
set_need_resched();
int cpu;
cpumask_t cpumask;
set_need_resched();
- if (unlikely(
rdp->qlen - rdp->last_rs_qlen > rsinterval
)) {
- r
dp->last_rs_qlen = rdp->qlen
;
+ if (unlikely(
!rcp->signaled
)) {
+ r
cp->signaled = 1
;
/*
* Don't send IPI to itself. With irqs disabled,
* rdp->cpu is the current cpu.
/*
* Don't send IPI to itself. With irqs disabled,
* rdp->cpu is the current cpu.
@@
-238,12
+235,14
@@
static void rcu_do_batch(struct rcu_data *rdp)
list = rdp->donelist;
while (list) {
list = rdp->donelist;
while (list) {
- next = rdp->donelist = list->next;
+ next = list->next;
+ prefetch(next);
list->func(list);
list = next;
if (++count >= rdp->blimit)
break;
}
list->func(list);
list = next;
if (++count >= rdp->blimit)
break;
}
+ rdp->donelist = list;
local_irq_disable();
rdp->qlen -= count;
local_irq_disable();
rdp->qlen -= count;
@@
-301,6
+300,7
@@
static void rcu_start_batch(struct rcu_ctrlblk *rcp)
smp_mb();
cpus_andnot(rcp->cpumask, cpu_online_map, nohz_cpu_mask);
smp_mb();
cpus_andnot(rcp->cpumask, cpu_online_map, nohz_cpu_mask);
+ rcp->signaled = 0;
}
}
}
}
@@
-628,9
+628,6
@@
void synchronize_rcu(void)
module_param(blimit, int, 0);
module_param(qhimark, int, 0);
module_param(qlowmark, int, 0);
module_param(blimit, int, 0);
module_param(qhimark, int, 0);
module_param(qlowmark, int, 0);
-#ifdef CONFIG_SMP
-module_param(rsinterval, int, 0);
-#endif
EXPORT_SYMBOL_GPL(rcu_batches_completed);
EXPORT_SYMBOL_GPL(rcu_batches_completed_bh);
EXPORT_SYMBOL_GPL(call_rcu);
EXPORT_SYMBOL_GPL(rcu_batches_completed);
EXPORT_SYMBOL_GPL(rcu_batches_completed_bh);
EXPORT_SYMBOL_GPL(call_rcu);