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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-14 01:46:18 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-14 01:46:18 +0300 |
| commit | 80a186074e72e2cd61f6716d90cf32ce54981a56 (patch) | |
| tree | c5f75a83498df0ea2109067b797ec7986479dda0 | |
| parent | 15c989d4d14b82f43cae7efc6a7794cdd556f274 (diff) | |
| parent | 3d07467b7aa91623b31d7b5888a123a2c8c8e9cc (diff) | |
| download | linux-80a186074e72e2cd61f6716d90cf32ce54981a56.tar.xz | |
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
| -rw-r--r-- | arch/x86/kernel/cpu/intel.c | 3 | ||||
| -rw-r--r-- | kernel/sched.c | 4 | ||||
| -rw-r--r-- | kernel/sched_rt.c | 7 |
3 files changed, 10 insertions, 4 deletions
diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c index 879666f4d871..7e1cca13af35 100644 --- a/arch/x86/kernel/cpu/intel.c +++ b/arch/x86/kernel/cpu/intel.c @@ -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; } /* diff --git a/kernel/sched.c b/kernel/sched.c index 150b6988de49..9ab3cd7858d3 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -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; diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c index 5a6ed1f0990a..b5b920ae2ea7 100644 --- a/kernel/sched_rt.c +++ b/kernel/sched_rt.c @@ -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; |