Peter Zijlstra 218050855e sched: adaptive scheduler granularity ...

Instead of specifying the preemption granularity, specify the wanted
latency. By fixing the granlarity to a constany the wakeup latency
it a function of the number of running tasks on the rq.

Invert this relation.

sysctl_sched_granularity becomes a minimum for the dynamic granularity
computed from the new sysctl_sched_latency.

Then use this latency to do more intelligent granularity decisions: if
there are fewer tasks running then we can schedule coarser. This helps
performance while still always keeping the latency target.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2007-08-25 18:41:53 +02:00

..

irq

free_irq(): fix DEBUG_SHIRQ handling

2007-08-22 19:52:44 -07:00

power

Hibernation: do not try to mark invalid PFNs as nosave

2007-08-11 15:47:40 -07:00

time

timer: remove clockevents_unregister_notifier

2007-08-11 15:47:42 -07:00

.gitignore

…

acct.c

Cleanup non-arch xtime uses, use get_seconds() or current_kernel_time().

2007-07-25 10:09:20 -07:00

audit.c

Freezer: make kernel threads nonfreezable by default

2007-07-17 10:23:02 -07:00

audit.h

Audit: add TTY input auditing

2007-07-16 09:05:47 -07:00

auditfilter.c

[PATCH] allow audit filtering on bit & operations

2007-07-22 09:57:02 -04:00

auditsc.c

kernel/auditsc.c: fix an off-by-one

2007-08-22 19:52:44 -07:00

capability.c

…

compat.c

signal/timer/event: timerfd compat code

2007-05-11 08:29:36 -07:00

configs.c

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cpu.c

HOTPLUG: Add CPU_DYING notifier

2007-07-16 12:05:49 +03:00

cpuset.c

usermodehelper: Tidy up waiting

2007-07-18 08:47:40 -07:00

delayacct.c

sched: update delay-accounting to use CFS's precise stats

2007-07-09 18:52:00 +02:00

die_notifier.c

…

dma.c

…

exec_domain.c

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exit.c

Kill some obsolete sub-thread-ptrace stuff

2007-08-03 15:06:33 -07:00

extable.c

…

fork.c

mm: Remove slab destructors from kmem_cache_create().

2007-07-20 10:11:58 +09:00

futex_compat.c

Revert "futex_requeue_pi optimization"

2007-06-18 09:48:41 -07:00

futex.c

futex_unlock_pi() hurts my brain and may cause application deadlock

2007-08-22 19:52:44 -07:00

hrtimer.c

Cache xtime every call to update_wall_time

2007-07-25 10:17:44 -07:00

itimer.c

…

kallsyms.c

kallsyms: make KSYM_NAME_LEN include space for trailing '\0'

2007-07-17 10:23:03 -07:00

Kconfig.hz

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Kconfig.preempt

[PATCH] sched: arch preempt notifier mechanism

2007-07-26 13:40:43 +02:00

kexec.c

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kfifo.c

is_power_of_2: kernel/kfifo.c

2007-07-16 09:05:50 -07:00

kmod.c

kernel-doc fix for kmod.c

2007-07-26 11:33:06 -07:00

kprobes.c

fix compilation with gcc 4.2

2007-08-11 15:47:42 -07:00

ksysfs.c

FRV: Fix linkage problems

2007-07-20 12:01:34 -07:00

kthread.c

kthread: silence bogus section mismatch warning

2007-07-31 15:39:42 -07:00

latency.c

…

lockdep_internals.h

…

lockdep_proc.c

Fix leak on /proc/lockdep_stats

2007-07-31 15:39:40 -07:00

lockdep.c

lockdep debugging: give stacktrace for init_error

2007-07-19 10:04:49 -07:00

Makefile

user namespace: add the framework

2007-07-16 09:05:47 -07:00

module.c

Fix Off-by-one in /sys/module/*/refcnt

2007-08-22 14:35:35 -07:00

mutex-debug.c

…

mutex-debug.h

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mutex.c

lockstat: measure lock bouncing

2007-07-19 10:04:49 -07:00

mutex.h

…

nsproxy.c

mm: Remove slab destructors from kmem_cache_create().

2007-07-20 10:11:58 +09:00

panic.c

Report that kernel is tainted if there was an OOPS

2007-07-17 10:23:02 -07:00

params.c

modules: better error messages when modules fail to load due to a sysfs problem.

2007-07-30 14:25:23 -07:00

pid.c

namespace: ensure clone_flags are always stored in an unsigned long

2007-07-16 09:05:48 -07:00

posix-cpu-timers.c

sched: make posix-cpu-timers use CFS's accounting information

2007-07-09 18:51:58 +02:00

posix-timers.c

posix-timers: fix creation race

2007-08-22 19:52:46 -07:00

printk.c

fix - ensure we don't use bootconsoles after init has been released

2007-08-21 20:23:53 -07:00

profile.c

fix compilation with gcc 4.2

2007-08-11 15:47:42 -07:00

ptrace.c

coredump masking: reimplementation of dumpable using two flags

2007-07-19 10:04:46 -07:00

rcupdate.c

…

rcutorture.c

Freezer: make kernel threads nonfreezable by default

2007-07-17 10:23:02 -07:00

relay.c

Fix a use after free bug in kernel->userspace relay file support

2007-07-31 15:39:42 -07:00

resource.c

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rtmutex_common.h

FUTEX: Tidy up the code

2007-07-16 09:05:49 -07:00

rtmutex-debug.c

FUTEX: Tidy up the code

2007-07-16 09:05:49 -07:00

rtmutex-debug.h

…

rtmutex-tester.c

Freezer: make kernel threads nonfreezable by default

2007-07-17 10:23:02 -07:00

rtmutex.c

FUTEX: Tidy up the code

2007-07-16 09:05:49 -07:00

rtmutex.h

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rwsem.c

lockstat: hook into spinlock_t, rwlock_t, rwsem and mutex

2007-07-19 10:04:49 -07:00

sched_debug.c

sched: sched_clock_idle_[sleep|wakeup]_event()

2007-08-23 15:18:02 +02:00

sched_fair.c

sched: adaptive scheduler granularity

2007-08-25 18:41:53 +02:00

sched_idletask.c

sched: remove the 'u64 now' parameter from ->put_prev_task()

2007-08-09 11:16:49 +02:00

sched_rt.c

sched: optimize task_tick_rt() a bit

2007-08-24 20:39:10 +02:00

sched_stats.h

[PATCH] sched: add schedstat_set() API

2007-08-02 17:41:40 +02:00

sched.c

sched: adaptive scheduler granularity

2007-08-25 18:41:53 +02:00

seccomp.c

make seccomp zerocost in schedule

2007-07-16 09:05:50 -07:00

signal.c

signalfd: fix interaction with posix-timers

2007-08-22 19:52:46 -07:00

softirq.c

Freezer: make kernel threads nonfreezable by default

2007-07-17 10:23:02 -07:00

softlockup.c

Freezer: make kernel threads nonfreezable by default

2007-07-17 10:23:02 -07:00

spinlock.c

lockstat: hook into spinlock_t, rwlock_t, rwsem and mutex

2007-07-19 10:04:49 -07:00

srcu.c

…

stacktrace.c

…

stop_machine.c

Fix stop_machine_run problem with naughty real time process

2007-07-16 09:05:41 -07:00

sys_ni.c

diskquota: 32bit quota tools on 64bit architectures

2007-07-16 09:05:48 -07:00

sys.c

Replace CONFIG_SOFTWARE_SUSPEND with CONFIG_HIBERNATION

2007-07-29 16:45:38 -07:00

sysctl.c

sched: adaptive scheduler granularity

2007-08-25 18:41:53 +02:00

taskstats.c

taskstats: add context-switch counters

2007-07-16 09:05:46 -07:00

time.c

Cleanup non-arch xtime uses, use get_seconds() or current_kernel_time().

2007-07-25 10:09:20 -07:00

timer.c

Pull ia64-clocksource into release branch

2007-07-20 11:26:47 -07:00

tsacct.c

Cleanup non-arch xtime uses, use get_seconds() or current_kernel_time().

2007-07-25 10:09:20 -07:00

uid16.c

…

user_namespace.c

fix create_new_namespaces() return value

2007-07-16 09:05:47 -07:00

user.c

mm: Remove slab destructors from kmem_cache_create().

2007-07-20 10:11:58 +09:00

utsname_sysctl.c

remove CONFIG_UTS_NS and CONFIG_IPC_NS

2007-07-16 09:05:47 -07:00

utsname.c

namespace: ensure clone_flags are always stored in an unsigned long

2007-07-16 09:05:48 -07:00

wait.c

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workqueue.c

destroy_workqueue() can livelock

2007-07-17 10:23:03 -07:00