Thomas Gleixner c4bd822e7b NOHZ: fix thinko in the timer restart code path ...

commit fb02fbc14d (NOHZ: restart tick
device from irq_enter())

solves the problem of stale jiffies when long running softirqs happen
in a long idle sleep period, but it has a major thinko in it:

When the interrupt which came in _is_ the timer interrupt which should
expire ts->sched_timer then we cancel and rearm the timer _before_ it
gets expired in hrtimer_interrupt() to the next period. That means the
call back function is not called. This game can go on for ever :(

Prevent this by making sure to only rearm the timer when the expiry
time is more than one tick_period away. Otherwise keep it running as
it is either already expired or will expiry at the right point to
update jiffies.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Venkatesch Pallipadi <venkatesh.pallipadi@intel.com>

2008-10-21 20:53:24 +02:00

..

irq

genirq: fix name space collision of nr_irqs in autoprobe.c

2008-10-16 16:53:30 +02:00

power

container freezer: skip frozen cgroups during power management resume

2008-10-20 08:52:34 -07:00

time

NOHZ: fix thinko in the timer restart code path

2008-10-21 20:53:24 +02:00

trace

tracing/fastboot: improve help text

2008-10-14 14:27:20 +02:00

.gitignore

Update kernel/.gitignore with new auto-generated files

2008-02-09 23:27:01 -08:00

acct.c

tty: Fix abusers of current->sighand->tty

2008-10-13 09:51:42 -07:00

audit_tree.c

[PATCH] list_for_each_rcu must die: audit

2008-05-17 03:30:23 -04:00

audit.c

[PATCH] Fix the bug of using AUDIT_STATUS_RATE_LIMIT when set fail, no error output.

2008-08-01 12:15:16 -04:00

audit.h

[PATCH 1/2] audit: move extern declarations to audit.h

2008-04-28 06:28:04 -04:00

auditfilter.c

Re: [PATCH] the loginuid field should be output in all AUDIT_CONFIG_CHANGE audit messages

2008-08-01 12:15:03 -04:00

auditsc.c

tty: Fix abusers of current->sighand->tty

2008-10-13 09:51:42 -07:00

backtracetest.c

backtrace: replace timer with tasklet + completions

2008-06-27 18:09:16 +02:00

bounds.c

Add kbuild.h that contains common definitions for kbuild users

2008-04-29 08:06:29 -07:00

capability.c

security: Fix setting of PF_SUPERPRIV by __capable()

2008-08-14 22:59:43 +10:00

cgroup_debug.c

cgroups: fix probable race with put_css_set[_taskexit] and find_css_set

2008-10-20 08:52:38 -07:00

cgroup_freezer.c

container freezer: rename check_if_frozen()

2008-10-20 08:52:34 -07:00

cgroup.c

cgroups: convert tasks file to use a seq_file with shared pid array

2008-10-20 08:52:38 -07:00

compat.c

Merge branches 'timers/clocksource', 'timers/hrtimers', 'timers/nohz', 'timers/ntp', 'timers/posixtimers' and 'timers/debug' into v28-timers-for-linus

2008-10-20 13:14:06 +02:00

configs.c

kernel/configs.c: remove useless comments

2008-10-20 08:52:34 -07:00

cpu.c

Merge branches 'sched/devel', 'sched/cpu-hotplug', 'sched/cpusets' and 'sched/urgent' into sched/core

2008-10-08 11:31:02 +02:00

cpuset.c

cpuset: use seq_*mask_* to print masks

2008-10-20 08:52:39 -07:00

delayacct.c

per-task-delay-accounting: update taskstats for memory reclaim delay

2008-07-25 10:53:47 -07:00

dma-coherent.c

dma-coherent: export dma_[alloc|release]_from_coherent methods

2008-08-22 08:34:53 +02:00

dma.c

kernel/dma.c: remove a CVS keyword

2008-10-16 11:21:30 -07:00

exec_domain.c

[PATCH] kill altroot

2008-07-26 20:53:20 -04:00

exit.c

Merge branch 'tracing-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-10-20 13:35:07 -07:00

extable.c

module: Don't report discarded init pages as kernel text.

2008-01-29 17:13:18 +11:00

fork.c

Merge branch 'tracing-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-10-20 13:35:07 -07:00

freezer.c

container freezer: implement freezer cgroup subsystem

2008-10-20 08:52:34 -07:00

futex_compat.c

futex_compat __user annotation

2008-03-30 14:18:41 -07:00

futex.c

futexes: fix fault handling in futex_lock_pi

2008-06-23 13:31:15 +02:00

hrtimer.c

Merge branches 'timers/clocksource', 'timers/hrtimers', 'timers/nohz', 'timers/ntp', 'timers/posixtimers' and 'timers/debug' into v28-timers-for-linus

2008-10-20 13:14:06 +02:00

itimer.c

timers: fix itimer/many thread hang

2008-09-14 16:25:35 +02:00

kallsyms.c

kernel/kallsyms.c: fix double return

2008-10-16 11:21:32 -07:00

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: move PREEMPT_RCU config option back under PREEMPT

2008-03-10 18:01:20 -07:00

kexec.c

kexec: fix crash_save_vmcoreinfo_init build problem

2008-10-20 15:28:50 -07:00

kfifo.c

…

kgdb.c

kgdb: call touch_softlockup_watchdog on resume

2008-10-06 13:50:59 -05:00

kmod.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus

2008-10-16 12:38:34 -07:00

kprobes.c

make kprobes.c:kretprobe_table_lock() static

2008-10-16 11:21:52 -07:00

ksysfs.c

profiling: dynamically enable readprofile at runtime

2008-10-16 11:21:31 -07:00

kthread.c

Merge branch 'tracing-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-10-20 13:35:07 -07:00

latencytop.c

kernel: use non-racy method for proc entries creation

2008-04-29 08:06:22 -07:00

lockdep_internals.h

lockdep: build fix

2008-08-13 12:55:10 +02:00

lockdep_proc.c

lockstat: fix numerical output rounding error

2008-08-26 10:37:46 +02:00

lockdep.c

lockdep: fix invalid list_del_rcu in zap_class

2008-08-27 08:40:36 +02:00

Makefile

Merge branch 'tracing-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-10-20 13:35:07 -07:00

marker.c

markers: bit-field is not thread-safe nor smp-safe

2008-10-14 10:38:45 +02:00

module.c

Merge branch 'tracing-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-10-20 13:35:07 -07:00

mutex-debug.c

mutex-debug: check mutex magic before owner

2008-05-16 16:53:35 +02:00

mutex-debug.h

…

mutex.c

locking: fix mutex @key parameter kernel-doc notation

2008-07-28 18:12:36 +02:00

mutex.h

…

notifier.c

ftrace: ignore functions that cannot be kprobe-ed

2008-10-14 10:34:22 +02:00

ns_cgroup.c

cgroup_clone: use pid of newly created task for new cgroup

2008-07-25 10:53:37 -07:00

nsproxy.c

removed unused #include <linux/version.h>'s

2008-08-23 12:14:12 -07:00

panic.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6

2008-10-17 09:50:12 -07:00

params.c

Add new string functions strict_strto* and convert kernel params to use them

2008-02-08 09:22:41 -08:00

pid_namespace.c

pid_ns: (BUG 11391) change ->child_reaper when init->group_leader exits

2008-09-02 19:21:38 -07:00

pid.c

pidns: remove now unused find_pid function.

2008-07-25 10:53:45 -07:00

pm_qos_params.c

pm_qos_requirement might sleep

2008-09-02 19:21:40 -07:00

posix-cpu-timers.c

timers: fix itimer/many thread hang, v2

2008-09-23 13:38:44 +02:00

posix-timers.c

Merge branches 'timers/clocksource', 'timers/hrtimers', 'timers/nohz', 'timers/ntp', 'timers/posixtimers' and 'timers/debug' into v28-timers-for-linus

2008-10-20 13:14:06 +02:00

printk.c

Merge branch 'core-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-10-16 15:17:40 -07:00

profile.c

profiling: dynamically enable readprofile at runtime

2008-10-16 11:21:31 -07:00

ptrace.c

make ptrace_untrace() static

2008-10-20 08:52:39 -07:00

rcuclassic.c

rcu: RCU-based detection of stalled CPUs for Classic RCU, fix

2008-10-03 10:41:00 +02:00

rcupdate.c

rcu: fix synchronize_rcu() so that kernel-doc works

2008-08-21 09:31:44 +02:00

rcupreempt_trace.c

rcu: trace fix possible mem-leak

2008-08-15 17:54:40 +02:00

rcupreempt.c

byteorder: remove direct includes of linux/byteorder/swab[b].h

2008-10-20 08:52:40 -07:00

rcutorture.c

byteorder: remove direct includes of linux/byteorder/swab[b].h

2008-10-20 12:51:53 -07:00

relay.c

relay: fix "full buffer with exactly full last subbuffer" accounting problem

2008-08-05 14:33:46 -07:00

res_counter.c

cgroup files: convert res_counter_write() to be a cgroups write_string() handler

2008-07-25 10:53:36 -07:00

resource.c

Merge branch 'core-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-10-16 15:17:40 -07:00

rtmutex_common.h

Don't operate with pid_t in rtmutex tester

2008-02-08 09:22:41 -08:00

rtmutex-debug.c

Don't operate with pid_t in rtmutex tester

2008-02-08 09:22:41 -08:00

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

hrtimer: more hrtimer_init_sleeper() fallout.

2008-02-13 15:45:36 +01:00

rtmutex.h

…

rwsem.c

sched: mark rwsem functions as __sched for wchan/profiling

2007-12-18 15:21:13 +01:00

sched_clock.c

sched_clock: prevent scd->clock from moving backwards

2008-10-10 11:17:04 +02:00

sched_cpupri.c

sched: use a 2-d bitmap for searching lowest-pri CPU

2008-06-06 15:19:28 +02:00

sched_cpupri.h

sched: fix the cpuprio count really

2008-06-06 15:19:44 +02:00

sched_debug.c

[PATCH] signal, procfs: some lock_task_sighand() users do not need rcu_read_lock()

2008-10-10 04:18:57 +04:00

sched_fair.c

Merge branches 'timers/clocksource', 'timers/hrtimers', 'timers/nohz', 'timers/ntp', 'timers/posixtimers' and 'timers/debug' into v28-timers-for-linus

2008-10-20 13:14:06 +02:00

sched_features.h

sched: turn off WAKEUP_OVERLAP

2008-09-22 16:29:00 +02:00

sched_idletask.c

sched: wakeup preempt when small overlap

2008-09-22 16:28:32 +02:00

sched_rt.c

Merge branches 'timers/clocksource', 'timers/hrtimers', 'timers/nohz', 'timers/ntp', 'timers/posixtimers' and 'timers/debug' into v28-timers-for-linus

2008-10-20 13:14:06 +02:00

sched_stats.h

timers: fix itimer/many thread hang, v3

2008-09-27 20:04:45 +02:00

sched.c

Merge branch 'tracing-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-10-20 13:35:07 -07:00

seccomp.c

…

semaphore.c

semaphore: __down_common: use signal_pending_state()

2008-08-05 14:33:47 -07:00

signal.c

Merge branch 'tracing-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-10-20 13:35:07 -07:00

smp.c

smp: have smp_call_function_single() detect invalid CPUs

2008-08-25 17:45:48 -07:00

softirq.c

Merge branches 'timers/clocksource', 'timers/hrtimers', 'timers/nohz', 'timers/ntp', 'timers/posixtimers' and 'timers/debug' into v28-timers-for-linus

2008-10-20 13:14:06 +02:00

softlockup.c

Make the taint flags reliable

2008-10-16 11:21:31 -07:00

spinlock.c

lockdep: spin_lock_nest_lock(), checkpatch fixes

2008-08-13 13:56:51 +02:00

srcu.c

make srcu_readers_active() static

2008-02-06 10:41:02 -08:00

stacktrace.c

stacktrace: fix modular build, export print_stack_trace and save_stack_trace

2008-06-30 09:20:55 +02:00

stop_machine.c

stop_machine: remove unused variable

2008-08-12 17:52:55 +10:00

sys_ni.c

Configure out AIO support

2008-10-16 11:21:51 -07:00

sys.c

Merge branches 'timers/clocksource', 'timers/hrtimers', 'timers/nohz', 'timers/ntp', 'timers/posixtimers' and 'timers/debug' into v28-timers-for-linus

2008-10-20 13:14:06 +02:00

sysctl_check.c

sysctl: check for bogus modes

2008-07-25 10:53:45 -07:00

sysctl.c

vmscan: unevictable LRU scan sysctl

2008-10-20 08:52:31 -07:00

taskstats.c

taskstats: remove initialization of static per-cpu variable

2008-07-25 10:53:47 -07:00

test_kprobes.c

kprobes: kretprobe user entry-handler

2008-02-06 10:41:11 -08:00

time.c

Make constants in kernel/timeconst.h fixed 64 bits

2008-05-02 16:18:42 -07:00

timeconst.pl

Make constants in kernel/timeconst.h fixed 64 bits

2008-05-02 16:18:42 -07:00

timer.c

Merge branches 'timers/clocksource', 'timers/hrtimers', 'timers/nohz', 'timers/ntp', 'timers/posixtimers' and 'timers/debug' into v28-timers-for-linus

2008-10-20 13:14:06 +02:00

tracepoint.c

tracepoints: fix reentrancy

2008-10-14 10:38:23 +02:00

tsacct.c

task IO accounting: move all IO statistics in struct task_io_accounting

2008-07-27 16:12:28 -07:00

uid16.c

asmlinkage_protect replaces prevent_tail_call

2008-04-10 17:28:26 -07:00

user_namespace.c

removed unused #include <linux/version.h>'s

2008-08-23 12:14:12 -07:00

user.c

sched: rt-bandwidth for user grouping interface

2008-08-19 13:10:09 +02:00

utsname_sysctl.c

sysctl: simplify ->strategy

2008-10-16 11:21:47 -07:00

utsname.c

removed unused #include <linux/version.h>'s

2008-08-23 12:14:12 -07:00

wait.c

wait: kill is_sync_wait()

2008-10-16 11:21:31 -07:00

workqueue.c

Remove Andrew Morton's old email accounts

2008-10-16 11:21:32 -07:00