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Chris Peterson 009789f040 slow-work: use round_jiffies() for thread pool's cull and OOM timers 
Round the slow work queue's cull and OOM timeouts to whole second boundary
with round_jiffies().  The slow work queue uses a pair of timers to cull
idle threads and, after OOM, to delay new thread creation.

This patch also extracts the mod_timer() logic for the cull timer into a
separate helper function.

By rounding non-time-critical timers such as these to whole seconds, they
will be batched up to fire at the same time rather than being spread out.
This allows the CPU wake up less, which saves power.

Signed-off-by: Chris Peterson <cpeterso@cpeterso.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-16 19:47:49 -07:00
..
irq
irq: slab alloc for default irq_affinity
2009-06-12 13:50:23 +03:00
power
mm, PM/Freezer: Disable OOM killer when tasks are frozen
2009-06-16 19:47:40 -07:00
time
Merge branch 'timers-for-linus-migration' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-06-15 10:06:19 -07:00
trace
Merge branch 'timers-for-linus-migration' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-06-15 10:06:19 -07:00
.gitignore
…
acct.c
[CVE-2009-0029] System call wrappers part 04
2009-01-14 14:15:19 +01:00
async.c
async: Fix lack of boot-time console due to insufficient synchronization
2009-06-08 12:31:53 -07:00
audit_tree.c
Switch collect_mounts() to struct path
2009-06-11 21:36:01 -04:00
audit.c
Audit: remove spaces from audit_log_d_path
2009-04-05 13:49:04 -04:00
audit.h
fixing audit rule ordering mess, part 1
2009-01-04 15:14:41 -05:00
auditfilter.c
inotify: use GFP_NOFS in kernel_event() to work around a lockdep false-positive
2009-05-06 16:36:09 -07:00
auditsc.c
Audit: remove spaces from audit_log_d_path
2009-04-05 13:49:04 -04:00
backtracetest.c
…
bounds.c
…
capability.c
[CVE-2009-0029] System call wrappers part 04
2009-01-14 14:15:19 +01:00
cgroup_debug.c
debug cgroup: remove unneeded cgroup_lock
2009-04-02 19:04:54 -07:00
cgroup_freezer.c
freezer_cg: disable writing freezer.state of root cgroup
2008-11-12 17:17:16 -08:00
cgroup.c
Push BKL down into ->remount_fs()
2009-06-11 21:36:11 -04:00
compat.c
signals: implement sys_rt_tgsigqueueinfo
2009-04-30 19:24:24 +02:00
configs.c
kernel/configs.c: remove useless comments
2008-10-20 08:52:34 -07:00
cpu.c
cpumask: use set_cpu_active in init/main.c
2009-03-30 22:05:12 +10:30
cpuset.c
cpuset,mm: update tasks' mems_allowed in time
2009-06-16 19:47:31 -07:00
cred-internals.h
CRED: Inaugurate COW credentials
2008-11-14 10:39:23 +11:00
cred.c
CRED: Rename cred_exec_mutex to reflect that it's a guard against ptrace
2009-05-11 08:15:36 +10:00
delayacct.c
schedstat: consolidate per-task cpu runtime stats
2008-12-18 13:54:01 +01:00
dma-coherent.c
dma-coherent: Restore dma_alloc_from_coherent() large alloc fall back policy.
2009-01-21 18:51:53 +09:00
dma.c
kernel/dma.c: remove a CVS keyword
2008-10-16 11:21:30 -07:00
exec_domain.c
Get rid of indirect include of fs_struct.h
2009-03-31 23:00:27 -04:00
exit.c
Merge branch 'perfcounters-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-06-11 14:01:07 -07:00
extable.c
Merge branch 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-04-05 11:04:19 -07:00
fork.c
Merge branch 'linus' into perfcounters/core
2009-06-11 17:55:42 +02:00
freezer.c
freezer_cg: use thaw_process() in unfreeze_cgroup()
2008-10-30 11:38:45 -07:00
futex_compat.c
CRED: Use RCU to access another task's creds and to release a task's own creds
2008-11-14 10:39:19 +11:00
futex.c
futex: fix restart in wait_requeue_pi
2009-05-20 10:34:32 +02:00
groups.c
groups: move code to kernel/groups.c
2009-06-16 19:47:48 -07:00
hrtimer.c
clocksource: prevent selection of low resolution clocksourse also for nohz=on
2009-06-13 12:00:26 +02:00
hung_task.c
softlockup: ensure the task has been switched out once
2009-02-11 11:04:16 +01:00
itimer.c
timers: split process wide cpu clocks/timers
2009-02-05 13:04:33 +01:00
kallsyms.c
kernel/kallsyms.c: replace deprecated __initcall with device_initcall and fix whitespace
2009-06-09 22:37:52 +02:00
Kconfig.freezer
container freezer: implement freezer cgroup subsystem
2008-10-20 08:52:34 -07:00
Kconfig.hz
sched: fix SCHED_HRTICK dependency
2008-07-28 14:37:38 +02:00
Kconfig.preempt
rcu: provide RCU options on non-preempt architectures too
2008-12-25 09:31:28 +01:00
kexec.c
PM core: rename suspend and resume functions
2009-06-12 21:32:31 +02:00
kfifo.c
kernel/kfifo.c: replace conditional test with is_power_of_2()
2009-06-16 19:47:47 -07:00
kgdb.c
sysrq, intel_fb: fix sysrq g collision
2009-05-15 07:56:24 -05:00
kmod.c
kmod: Release sub_info on cred allocation failure.
2009-05-26 12:11:19 -07:00
kprobes.c
kprobes: fix to use text_mutex around arm/disarm kprobe
2009-05-08 16:23:48 -07:00
ksysfs.c
kernel/ksysfs.c:fix dependence on CONFIG_NET
2009-01-06 10:44:31 -08:00
kthread.c
cpuset,mm: update tasks' mems_allowed in time
2009-06-16 19:47:31 -07:00
latencytop.c
sched, latencytop: incorporate review feedback from Andrew Morton
2009-02-11 10:18:04 +01:00
lockdep_internals.h
lockdep: increase MAX_LOCKDEP_ENTRIES and MAX_LOCKDEP_CHAINS
2009-05-12 19:59:52 +02:00
lockdep_proc.c
lockstat: warn about disabled lock debugging
2009-02-14 23:28:28 +01:00
lockdep_states.h
lockdep: move state bit definitions around
2009-02-14 23:27:59 +01:00
lockdep.c
Merge branch 'linus' into tracing/core
2009-05-07 11:17:34 +02:00
Makefile
groups: move code to kernel/groups.c
2009-06-16 19:47:48 -07:00
marker.c
markers/tracpoints: fix non-modular build
2008-11-16 09:52:03 +01:00
module.c
module: trim exception table on init free.
2009-06-12 21:47:04 +09:30
mutex-debug.c
mutex: implement adaptive spinning
2009-01-14 18:09:02 +01:00
mutex-debug.h
mutex: implement adaptive spinning
2009-01-14 18:09:02 +01:00
mutex.c
Merge branch 'linus' into perfcounters/core
2009-06-11 17:55:42 +02:00
mutex.h
mutex: implement adaptive spinning
2009-01-14 18:09:02 +01:00
notifier.c
Merge commit 'v2.6.28-rc6' into core/debug
2008-11-26 08:22:50 +01:00
ns_cgroup.c
cgroups: relax ns_can_attach checks to allow attaching to grandchild cgroups
2009-04-02 19:04:53 -07:00
nsproxy.c
User namespaces: set of cleanups (v2)
2008-11-24 18:57:41 -05:00
panic.c
Fix caller information for warn_slowpath_null
2009-05-16 13:41:28 -07:00
params.c
module_param: allow 'bool' module_params to be bool, not just int.
2009-06-12 21:46:58 +09:30
perf_counter.c
perf_counter: Add forward/backward attribute ABI compatibility
2009-06-12 14:28:52 +02:00
pid_namespace.c
signals: zap_pid_ns_process() should use force_sig()
2009-04-02 19:04:58 -07:00
pid.c
pids: refactor vnr/nr_ns helpers to make them safe
2009-04-02 19:05:02 -07:00
pm_qos_params.c
pm_qos_requirement might sleep
2008-09-02 19:21:40 -07:00
posix-cpu-timers.c
kernel/posix-cpu-timers.c: fix sparse warning
2009-04-30 08:08:31 +02:00
posix-timers.c
[CVE-2009-0029] System call wrappers part 05
2009-01-14 14:15:20 +01:00
printk.c
Merge branch 'printk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-04-05 10:23:25 -07:00
profile.c
page allocator: do not check NUMA node ID when the caller knows the node is valid
2009-06-16 19:47:32 -07:00
ptrace.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6
2009-06-11 10:01:41 -07:00
rcuclassic.c
kmemtrace, rcu: fix linux/rcutree.h and linux/rcuclassic.h dependencies
2009-04-03 12:23:02 +02:00
rcupdate.c
RCU: Don't try and predeclare inline funcs as it upsets some versions of gcc
2009-04-15 13:55:14 -07:00
rcupreempt_trace.c
"Tree RCU": scalable classic RCU implementation
2008-12-18 21:56:04 +01:00
rcupreempt.c
rcu: rcu_sched_grace_period(): kill the bogus flush_signals()
2009-05-05 20:28:05 +02:00
rcutorture.c
cpumask: convert rcutorture.c
2009-03-30 22:05:16 +10:30
rcutree_trace.c
rcu: Add __rcu_pending tracing to hierarchical RCU
2009-04-14 11:33:43 +02:00
rcutree.c
rcu: Add __rcu_pending tracing to hierarchical RCU
2009-04-14 11:33:43 +02:00
rcutree.h
kmemtrace, rcu: fix rcu_tree_trace.c data structure dependencies
2009-04-03 12:23:03 +02:00
relay.c
Merge branch 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-04-05 11:04:19 -07:00
res_counter.c
memcg: memory cgroup resource counters for hierarchy
2009-01-08 08:31:05 -08:00
resource.c
Remove 'recurse into child resources' logic from 'reserve_region_with_split()'
2009-04-18 21:44:24 -07:00
rtmutex_common.h
rt_mutex: add proxy lock routines
2009-04-06 11:14:02 +02:00
rtmutex-debug.c
…
rtmutex-debug.h
…
rtmutex-tester.c
sysdev: Pass the attribute to the low level sysdev show/store function
2008-07-21 21:55:02 -07:00
rtmutex.c
trivial: fix ETIMEOUT -> ETIMEDOUT typos
2009-06-12 18:01:50 +02:00
rtmutex.h
…
rwsem.c
…
sched_clock.c
sched: Fix fallback sched_clock()'s offset when using jiffies
2009-05-09 10:08:19 +02:00
sched_cpupri.c
sched: use slab in cpupri_init()
2009-06-11 19:27:12 +03:00
sched_cpupri.h
cpumask: remove cpumask_t from core
2009-03-30 22:05:17 +10:30
sched_debug.c
sched: remove unused fields from struct rq
2009-03-24 23:16:51 +01:00
sched_fair.c
sched: remove redundant hierarchy walk in check_preempt_wakeup
2009-04-09 08:19:08 +02:00
sched_features.h
Merge branch 'locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-03-30 17:17:35 -07:00
sched_idletask.c
sched, timers: move calc_load() to scheduler
2009-05-15 15:32:45 +02:00
sched_rt.c
cpumask: alloc zeroed cpumask for static cpumask_var_ts
2009-06-09 22:30:27 +09:30
sched_stats.h
sched: remove unused fields from struct rq
2009-03-24 23:16:51 +01:00
sched.c
Merge branch 'timers-for-linus-migration' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-06-15 10:06:19 -07:00
seccomp.c
x86-64: seccomp: fix 32/64 syscall hole
2009-03-02 15:41:30 -08:00
semaphore.c
semaphore: __down_common: use signal_pending_state()
2008-08-05 14:33:47 -07:00
signal.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6
2009-06-11 10:01:41 -07:00
slow-work.c
slow-work: use round_jiffies() for thread pool's cull and OOM timers
2009-06-16 19:47:49 -07:00
smp.c
cpumask: alloc zeroed cpumask for static cpumask_var_ts
2009-06-09 22:30:27 +09:30
softirq.c
Merge branch 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-06-10 19:53:40 -07:00
softlockup.c
softlockup: decouple hung tasks check from softlockup detection
2009-01-16 14:06:04 +01:00
spinlock.c
Allow rwlocks to re-enable interrupts
2009-04-02 19:05:11 -07:00
srcu.c
…
stacktrace.c
stacktrace: provide save_stack_trace_tsk() weak alias
2008-12-25 11:44:43 +01:00
stop_machine.c
cpumask: remove cpumask_t from core
2009-03-30 22:05:17 +10:30
sys_ni.c
Merge commit 'v2.6.29-rc2' into perfcounters/core
2009-01-21 16:37:27 +01:00
sys.c
groups: move code to kernel/groups.c
2009-06-16 19:47:48 -07:00
sysctl_check.c
net: add ARP notify option for devices
2009-02-01 01:04:33 -08:00
sysctl.c
mm: remove CONFIG_UNEVICTABLE_LRU config option
2009-06-16 19:47:42 -07:00
taskstats.c
cpumask: convert rest of files in kernel/
2009-01-01 10:12:28 +10:30
test_kprobes.c
kprobes: add tests for register_kprobes
2009-01-06 15:59:20 -08:00
time.c
[CVE-2009-0029] System call wrappers part 01
2009-01-14 14:15:18 +01:00
timeconst.pl
…
timer.c
Merge branch 'timers-for-linus-migration' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-06-15 10:06:19 -07:00
tracepoint.c
tracepoints: dont update zero-sized tracepoint sections
2009-03-18 19:55:00 +01:00
tsacct.c
Fix fixpoint divide exception in acct_update_integrals
2009-03-09 08:13:35 -07:00
uid16.c
[CVE-2009-0029] System call wrappers part 19
2009-01-14 14:15:26 +01:00
up.c
smp_call_function_single(): be slightly less stupid, fix #2
2009-01-12 16:04:37 +01:00
user_namespace.c
Fix recursive lock in free_uid()/free_user_ns()
2009-02-27 16:26:21 -08:00
user.c
Merge branch 'master' into next
2009-03-24 10:52:46 +11:00
utsname_sysctl.c
proc_sysctl: use CONFIG_PROC_SYSCTL around ipc and utsname proc_handlers
2009-04-02 19:05:01 -07:00
utsname.c
removed unused #include <linux/version.h>'s
2008-08-23 12:14:12 -07:00
wait.c
wait: don't use __wake_up_common()
2009-04-14 17:17:16 +02:00
workqueue.c
ftrace, workqueuetrace: make workqueue tracepoints use TRACE_EVENT macro
2009-06-02 01:10:40 +02:00