Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched-devel
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched-devel:
sched: add arch_update_cpu_topology hook.
sched: add exported arch_reinit_sched_domains() to header file.
sched: remove double unlikely from schedule()
sched: cleanup old and rarely used 'debug' features.
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 3625fca..fed07d0 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -790,6 +790,7 @@
};
extern void partition_sched_domains(int ndoms_new, cpumask_t *doms_new);
+extern int arch_reinit_sched_domains(void);
#endif /* CONFIG_SMP */
diff --git a/include/linux/topology.h b/include/linux/topology.h
index 2d8dac8..bd14f8b 100644
--- a/include/linux/topology.h
+++ b/include/linux/topology.h
@@ -50,6 +50,8 @@
for_each_online_node(node) \
if (nr_cpus_node(node))
+void arch_update_cpu_topology(void);
+
/* Conform to ACPI 2.0 SLIT distance definitions */
#define LOCAL_DISTANCE 10
#define REMOTE_DISTANCE 20
diff --git a/kernel/sched.c b/kernel/sched.c
index 3f7c5eb..28c73f0 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -594,18 +594,14 @@
SCHED_FEAT_NEW_FAIR_SLEEPERS = 1,
SCHED_FEAT_WAKEUP_PREEMPT = 2,
SCHED_FEAT_START_DEBIT = 4,
- SCHED_FEAT_TREE_AVG = 8,
- SCHED_FEAT_APPROX_AVG = 16,
- SCHED_FEAT_HRTICK = 32,
- SCHED_FEAT_DOUBLE_TICK = 64,
+ SCHED_FEAT_HRTICK = 8,
+ SCHED_FEAT_DOUBLE_TICK = 16,
};
const_debug unsigned int sysctl_sched_features =
SCHED_FEAT_NEW_FAIR_SLEEPERS * 1 |
SCHED_FEAT_WAKEUP_PREEMPT * 1 |
SCHED_FEAT_START_DEBIT * 1 |
- SCHED_FEAT_TREE_AVG * 0 |
- SCHED_FEAT_APPROX_AVG * 0 |
SCHED_FEAT_HRTICK * 1 |
SCHED_FEAT_DOUBLE_TICK * 0;
@@ -3886,7 +3882,7 @@
if (prev->state && !(preempt_count() & PREEMPT_ACTIVE)) {
if (unlikely((prev->state & TASK_INTERRUPTIBLE) &&
- unlikely(signal_pending(prev)))) {
+ signal_pending(prev))) {
prev->state = TASK_RUNNING;
} else {
deactivate_task(rq, prev, 1);
@@ -6811,6 +6807,10 @@
*/
static cpumask_t fallback_doms;
+void __attribute__((weak)) arch_update_cpu_topology(void)
+{
+}
+
/*
* Set up scheduler domains and groups. Callers must hold the hotplug lock.
* For now this just excludes isolated cpus, but could be used to
@@ -6820,6 +6820,7 @@
{
int err;
+ arch_update_cpu_topology();
ndoms_cur = 1;
doms_cur = kmalloc(sizeof(cpumask_t), GFP_KERNEL);
if (!doms_cur)
@@ -6924,7 +6925,7 @@
}
#if defined(CONFIG_SCHED_MC) || defined(CONFIG_SCHED_SMT)
-static int arch_reinit_sched_domains(void)
+int arch_reinit_sched_domains(void)
{
int err;
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index b85cac4..86a9337 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -302,11 +302,6 @@
return vslice;
}
-static u64 sched_vslice(struct cfs_rq *cfs_rq)
-{
- return __sched_vslice(cfs_rq->load.weight, cfs_rq->nr_running);
-}
-
static u64 sched_vslice_add(struct cfs_rq *cfs_rq, struct sched_entity *se)
{
return __sched_vslice(cfs_rq->load.weight + se->load.weight,
@@ -504,15 +499,6 @@
} else
vruntime = cfs_rq->min_vruntime;
- if (sched_feat(TREE_AVG)) {
- struct sched_entity *last = __pick_last_entity(cfs_rq);
- if (last) {
- vruntime += last->vruntime;
- vruntime >>= 1;
- }
- } else if (sched_feat(APPROX_AVG) && cfs_rq->nr_running)
- vruntime += sched_vslice(cfs_rq)/2;
-
/*
* The 'current' period is already promised to the current tasks,
* however the extra weight of the new task will slow them down a