linux/kernel/sched_rt.c, branch v2.6.34

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

2010-03-13T22:46:18Z

* '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

sched: Fix pick_next_highest_task_rt() for cgroups

2010-03-11T14:21:50Z

Since pick_next_highest_task_rt() already iterates all the cgroups and is really only interested in tasks, skip over the !task entries. Reported-by: Dhaval Giani Signed-off-by: Peter Zijlstra Tested-by: Dhaval Giani LKML-Reference: Signed-off-by: Ingo Molnar

kernel core: use helpers for rlimits

2010-03-06T19:26:33Z

Make sure compiler won't do weird things with limits. E.g. fetching them twice may return 2 different values after writable limits are implemented. I.e. either use rlimit helpers added in commit 3e10e716abf3 ("resource: add helpers for fetching rlimits") or ACCESS_ONCE if not applicable. Signed-off-by: Jiri Slaby Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: john stultz Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

sched: Change usage of rt_rq->rt_se to rt_rq->tg->rt_se[cpu]

2010-02-04T08:57:32Z

This is the first step to remove rt_rq member rt_se because it have the same meaning with tg->rt_se[cpu]. And the latter style is also used by the fair scheduling class. Signed-off-by: Yong Zhang Cc: Rusty Russell Signed-off-by: Peter Zijlstra LKML-Reference: <2674af741001282257r28c97a92o9f90cf16fe8d3d84@mail.gmail.com> Signed-off-by: Ingo Molnar

sched: Implement head queueing for sched_rt

2010-01-22T17:09:59Z

The ability of enqueueing a task to the head of a SCHED_FIFO priority list is required to fix some violations of POSIX scheduling policy. Implement the functionality in sched_rt. Signed-off-by: Thomas Gleixner Acked-by: Peter Zijlstra Tested-by: Carsten Emde Tested-by: Mathias Weber LKML-Reference: <20100120171629.772169931@linutronix.de>

sched: Extend enqueue_task to allow head queueing

2010-01-22T17:09:59Z

The ability of enqueueing a task to the head of a SCHED_FIFO priority list is required to fix some violations of POSIX scheduling policy. Extend the related functions with a "head" argument. Signed-off-by: Thomas Gleixner Acked-by: Peter Zijlstra Tested-by: Carsten Emde Tested-by: Mathias Weber LKML-Reference: <20100120171629.734886007@linutronix.de>

sched: Remove the sched_class load_balance methods

2010-01-21T12:40:09Z

Take out the sched_class methods for load-balancing. Signed-off-by: Peter Zijlstra LKML-Reference: Signed-off-by: Ingo Molnar

sched: Don't expose local functions

2010-01-17T07:09:45Z

kernel/sched: don't expose local functions The get_rr_interval_* functions are all class methods of struct sched_class. They are not exported so make them static. Signed-off-by: H Hartley Sweeten Cc: Peter Zijlstra LKML-Reference: <201001132021.53253.hartleys@visionengravers.com> Signed-off-by: Ingo Molnar

sched: Add pre and post wakeup hooks

2009-12-16T18:01:58Z

As will be apparent in the next patch, we need a pre wakeup hook for sched_fair task migration, hence rename the post wakeup hook and one pre wakeup. Signed-off-by: Peter Zijlstra Cc: Mike Galbraith LKML-Reference: <20091216170518.114746117@chello.nl> Signed-off-by: Ingo Molnar

sched: Convert rt_runtime_lock to raw_spinlock

2009-12-14T22:55:33Z

Convert locks which cannot be sleeping locks in preempt-rt to raw_spinlocks. Signed-off-by: Thomas Gleixner Acked-by: Peter Zijlstra Acked-by: Ingo Molnar