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Peter Zijlstra cadefd3d6c sched: Make scale_rt_power() deal with backward clocks 
Mike reported that, while unlikely, its entirely possible for
scale_rt_power() to see the time go backwards. This yields rather
'interesting' results.

So like all other sites that deal with clocks; make this one ignore
backward clock movement too.

Reported-by: Mike Galbraith <bitbucket@online.de>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20140227094035.GZ9987@twins.programming.kicks-ass.net
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-04-18 12:07:21 +02:00
..
debug
KGDB: make kgdb_breakpoint() as noinline
2014-02-26 11:16:25 +00:00
events
perf: Optimize group_sched_in()
2014-02-27 12:43:26 +01:00
gcov
gcov: reuse kbasename helper
2013-11-13 12:09:34 +09:00
irq
genirq: Export symbol no_action()
2014-03-22 11:33:09 +01:00
locking
Merge branch 'x86-asmlinkage-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-03-31 14:13:25 -07:00
power
Merge branches 'pm-runtime' and 'pm-sleep'
2014-03-20 13:25:54 +01:00
printk
printk: fix syslog() overflowing user buffer
2014-02-17 12:24:45 -08:00
rcu
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-03-31 11:21:19 -07:00
sched
sched: Make scale_rt_power() deal with backward clocks
2014-04-18 12:07:21 +02:00
time
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-04-01 11:00:07 -07:00
trace
Merge branch 'for-3.15/core' of git://git.kernel.dk/linux-block
2014-04-01 19:19:15 -07:00
.gitignore
Ignore generated file kernel/x509_certificate_list
2013-12-10 18:21:34 +00:00
acct.c
fs: Fix hang with BSD accounting on frozen filesystem
2013-05-04 14:57:58 -04:00
async.c
async: rename and redefine async_func_ptr
2013-03-12 13:59:14 -07:00
audit_tree.c
inotify: Fix reporting of cookies for inotify events
2014-02-18 11:17:17 +01:00
audit_watch.c
inotify: Fix reporting of cookies for inotify events
2014-02-18 11:17:17 +01:00
audit.c
AUDIT: Allow login in non-init namespaces
2014-03-30 17:02:53 -07:00
audit.h
audit: Use struct net not pid_t to remember the network namespce to reply in
2014-02-28 04:04:33 -08:00
auditfilter.c
audit: Update kdoc for audit_send_reply and audit_list_rules_send
2014-03-08 15:31:54 -08:00
auditsc.c
execve: use 'struct filename *' for executable name passing
2014-02-05 12:54:53 -08:00
backtracetest.c
…
bounds.c
mm: do not allocate page->ptl dynamically, if spinlock_t fits to long
2013-12-20 12:25:45 -08:00
capability.c
audit: Simplify and correct audit_log_capset
2014-01-13 22:26:48 -05:00
cgroup_freezer.c
cgroup: replace cftype->read_seq_string() with cftype->seq_show()
2013-12-05 12:28:04 -05:00
cgroup.c
cgroup: fix a failure path in create_css()
2014-03-18 17:15:36 -04:00
compat.c
Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-04-02 12:51:41 -07:00
configs.c
proc: Supply PDE attribute setting accessor functions
2013-05-01 17:29:18 -04:00
context_tracking.c
context_tracking: Wrap static key check into more intuitive function name
2013-12-02 20:43:14 +01:00
cpu_pm.c
…
cpu.c
Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-11-14 16:55:11 +09:00
cpuset.c
cpuset: fix a race condition in __cpuset_node_allowed_softwall()
2014-02-27 09:39:54 -05:00
crash_dump.c
…
cred.c
…
delayacct.c
kernel/delayacct.c: remove redundant checking in __delayacct_add_tsk()
2013-11-13 12:09:12 +09:00
dma.c
…
elfcore.c
switch elf_core_write_extra_phdrs() to dump_emit()
2013-11-09 00:16:23 -05:00
exec_domain.c
…
exit.c
introduce for_each_thread() to replace the buggy while_each_thread()
2014-01-21 16:19:46 -08:00
extable.c
asmlinkage: Make main_extable_sort_needed visible
2014-02-13 18:13:22 -08:00
fork.c
sched/numa: Move task_numa_free() to __put_task_struct()
2014-03-11 12:05:43 +01:00
freezer.c
libata, freezer: avoid block device removal while system is frozen
2013-12-19 13:50:32 -05:00
futex_compat.c
compat: Get rid of (get|put)_compat_time(val|spec)
2014-02-02 14:09:12 -08:00
futex.c
Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-03-31 10:59:39 -07:00
groups.c
userns: Kill nsown_capable it makes the wrong thing easy
2013-08-30 23:44:11 -07:00
hrtimer.c
timer: Remove code redundancy while calling get_nohz_timer_target()
2014-03-20 12:35:46 +01:00
hung_task.c
hung_task: Display every hung task warning
2014-01-25 12:13:33 +01:00
irq_work.c
perf/x86: Warn to early_printk() in case irq_work is too slow
2014-02-21 21:49:07 +01:00
itimer.c
…
jump_label.c
static_key: WARN on usage before jump_label_init was called
2013-10-19 19:45:35 -04:00
kallsyms.c
kernel: kallsyms: memory override issue, need check destination buffer length
2013-04-15 15:17:26 +09:30
kcmp.c
…
Kconfig.freezer
…
Kconfig.hz
kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS
2013-11-15 09:32:22 +09:00
Kconfig.locks
locking: Fix copy/paste errors of "ARCH_INLINE_*_UNLOCK_BH"
2013-05-28 08:50:00 +02:00
Kconfig.preempt
…
kexec.c
kexec/compat: convert to COMPAT_SYSCALL_DEFINE with changing parameter types
2014-03-06 16:30:46 +01:00
kmod.c
execve: use 'struct filename *' for executable name passing
2014-02-05 12:54:53 -08:00
kprobes.c
kprobes: use KSYM_NAME_LEN to size identifier buffers
2013-11-13 12:09:26 +09:00
ksysfs.c
rcu: Fix sparse warning for rcu_expedited from kernel/ksysfs.c
2014-02-26 06:35:16 -08:00
kthread.c
kthread: make kthread_create() killable
2013-11-13 12:08:59 +09:00
latencytop.c
…
Makefile
Merge branch 'x86-asmlinkage-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-03-31 14:13:25 -07:00
module_signing.c
keys: change asymmetric keys to use common hash definitions
2013-10-25 17:15:18 -04:00
module-internal.h
KEYS: Separate the kernel signature checking keyring from module signing
2013-09-25 17:17:01 +01:00
module.c
Merge branch 'x86-asmlinkage-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-03-31 14:13:25 -07:00
notifier.c
notifier: Substitute rcu_access_pointer() for rcu_dereference_raw()
2014-02-26 06:35:13 -08:00
nsproxy.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2013-09-07 14:35:32 -07:00
padata.c
padata: Fix wrong usage of rcu_dereference()
2013-12-05 21:28:42 +08:00
panic.c
Merge branch 'x86-asmlinkage-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-03-31 14:13:25 -07:00
params.c
params: improve standard definitions
2013-12-04 14:09:46 +10:30
pid_namespace.c
pid_namespace: make freeing struct pid_namespace rcu-delayed
2013-10-24 23:43:29 -04:00
pid.c
pidns: fix free_pid() to handle the first fork failure
2013-09-30 14:31:03 -07:00
posix-cpu-timers.c
posix-timers: Convert abuses of BUG_ON to WARN_ON
2013-12-09 16:56:29 +01:00
posix-timers.c
posix-timers: Remove unused variable
2013-04-18 12:51:19 +02:00
profile.c
mm: fix GFP_THISNODE callers and clarify
2014-03-10 17:26:19 -07:00
ptrace.c
kernel/compat: convert to COMPAT_SYSCALL_DEFINE
2014-03-06 15:35:10 +01:00
range.c
range: Do not add new blank slot with add_range_with_merge
2013-06-18 11:32:10 -05:00
reboot.c
kexec: migrate to reboot cpu
2013-12-18 19:04:50 -08:00
relay.c
kernel: delete __cpuinit usage from all core kernel files
2013-07-14 19:36:59 -04:00
res_counter.c
memcg: reduce function dereference
2013-09-12 15:38:02 -07:00
resource.c
resources: Set type in __request_region()
2014-03-19 15:00:16 -06:00
seccomp.c
seccomp: allow BPF_XOR based ALU instructions.
2013-03-26 11:07:19 +11:00
signal.c
kernel/signal.c: change do_signal_stop/do_sigaction to use while_each_thread()
2014-01-23 16:37:02 -08:00
smp.c
smp: Rename __smp_call_function_single() to smp_call_function_single_async()
2014-02-24 14:47:15 -08:00
smpboot.c
kernel: delete __cpuinit usage from all core kernel files
2013-07-14 19:36:59 -04:00
smpboot.h
…
softirq.c
softirq: Add linux/irq.h to make it compile again
2014-03-19 11:28:14 +01:00
stacktrace.c
…
stop_machine.c
stop_machine: Fix^2 race between stop_two_cpus() and stop_cpus()
2014-03-11 11:33:47 +01:00
sys_ni.c
unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINE
2013-05-09 13:46:38 -04:00
sys.c
sys: Replace hardcoding of -20 and 19 with MIN_NICE and MAX_NICE
2014-02-22 18:16:19 +01:00
sysctl_binary.c
kernel/sysctl_binary.c: use scnprintf() instead of snprintf()
2013-11-13 12:09:33 +09:00
sysctl.c
Merge branch 'for-3.15/core' of git://git.kernel.dk/linux-block
2014-04-01 19:19:15 -07:00
system_certificates.S
KEYS: correct alignment of system_certificate_list content in assembly file
2013-12-10 18:25:28 +00:00
system_keyring.c
KEYS: correct alignment of system_certificate_list content in assembly file
2013-12-10 18:25:28 +00:00
task_work.c
task_work: documentation
2013-09-11 15:58:27 -07:00
taskstats.c
genetlink: only pass array to genl_register_family_with_ops()
2013-11-19 16:39:05 -05:00
test_kprobes.c
kernel/: rename random32() to prandom_u32()
2013-04-29 18:28:42 -07:00
time.c
sched: Rename sched.c as sched/core.c in comments and Documentation
2013-06-19 12:58:42 +02:00
timeconst.bc
kernel: Replace timeconst.pl with a bc script
2013-02-16 23:17:25 +01:00
timer.c
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-04-01 11:00:07 -07:00
torture.c
rcutorture: Gracefully handle NULL cleanup hooks
2014-02-23 09:04:39 -08:00
tracepoint.c
tracing: Do not add event files for modules that fail tracepoints
2014-03-03 21:11:05 -05:00
tsacct.c
cputime: Use accessors to read task cputime stats
2013-01-27 19:23:31 +01:00
uid16.c
userns: Kill nsown_capable it makes the wrong thing easy
2013-08-30 23:44:11 -07:00
up.c
smp: Rename __smp_call_function_single() to smp_call_function_single_async()
2014-02-24 14:47:15 -08:00
user_namespace.c
user_namespace.c: Remove duplicated word in comment
2014-02-20 11:58:35 -08:00
user-return-notifier.c
hlist: drop the node parameter from iterators
2013-02-27 19:10:24 -08:00
user.c
KEYS: fix uninitialized persistent_keyring_register_sem
2013-12-13 15:59:11 +00:00
utsname_sysctl.c
kernel/utsname_sysctl.c: put get/get_uts() into CONFIG_PROC_SYSCTL code block
2013-02-27 19:10:22 -08:00
utsname.c
userns: Kill nsown_capable it makes the wrong thing easy
2013-08-30 23:44:11 -07:00
watchdog.c
watchdog: Simplify a little the IPI call
2014-02-24 14:47:05 -08:00
workqueue_internal.h
sched: Rename sched.c as sched/core.c in comments and Documentation
2013-06-19 12:58:42 +02:00
workqueue.c
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-04-01 11:00:07 -07:00