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Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 

* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: Fix pick_next_highest_task_rt() for cgroups
  sched: Cleanup: remove unused variable in try_to_wake_up()
  x86: Fix sched_clock_cpu for systems with unsynchronized TSC
This commit is contained in:
Linus Torvalds 2010-03-13 14:46:18 -08:00
parent 15c989d4d1 3d07467b7a
commit 80a186074e
3 changed files with 10 additions and 4 deletions
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3
arch/x86/kernel/cpu/intel.c
View File

@ -70,7 +70,8 @@ static void __cpuinit early_init_intel(struct cpuinfo_x86 *c)
if (c->x86_power & (1 << 8)) {
set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
set_cpu_cap(c, X86_FEATURE_NONSTOP_TSC);
sched_clock_stable = 1;
if (!check_tsc_unstable())
sched_clock_stable = 1;
}
/*

4
kernel/sched.c
View File

@ -2359,7 +2359,7 @@ static int try_to_wake_up(struct task_struct *p, unsigned int state,
{
int cpu, orig_cpu, this_cpu, success = 0;
unsigned long flags;
struct rq *rq, *orig_rq;
struct rq *rq;
if (!sched_feat(SYNC_WAKEUPS))
wake_flags &= ~WF_SYNC;
@ -2367,7 +2367,7 @@ static int try_to_wake_up(struct task_struct *p, unsigned int state,
this_cpu = get_cpu();
smp_wmb();
rq = orig_rq = task_rq_lock(p, &flags);
rq = task_rq_lock(p, &flags);
update_rq_clock(rq);
if (!(p->state & state))
goto out;

7
kernel/sched_rt.c
View File

@ -1146,7 +1146,12 @@ static struct task_struct *pick_next_highest_task_rt(struct rq *rq, int cpu)
if (next && next->prio < idx)
continue;
list_for_each_entry(rt_se, array->queue + idx, run_list) {
struct task_struct *p = rt_task_of(rt_se);
struct task_struct *p;
if (!rt_entity_is_task(rt_se))
continue;
p = rt_task_of(rt_se);
if (pick_rt_task(rq, p, cpu)) {
next = p;
break;