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android_kernel_google_msm/kernel
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Stephen Boyd 657eb100e4 sched_clock: Add support for >32 bit sched_clock 
The ARM architected system counter has at least 56 usable bits.
Add support for counters with more than 32 bits to the generic
sched_clock implementation so we can increase the time between
wakeups due to dealing with wrap-around on these devices while
benefiting from the irqtime accounting and suspend/resume
handling that the generic sched_clock code already has. On my
system using 56 bits over 32 bits changes the wraparound time
from a few minutes to an hour. For faster running counters (GHz
range) this is even more important because we may not be able to
execute the timer in time to deal with the wraparound if only 32
bits are used.

We choose a maxsec value of 3600 seconds because we assume no
system will go idle for more than an hour. In the future we may
need to increase this value.

Note: All users should switch over to the 64-bit read function so
we can remove setup_sched_clock() in favor of sched_clock_register().

Change-Id: Ieea67ada51e6fce2637520bf5f60e789762d8694
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Git-commit: e7e3ff1bfe
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Signed-off-by: Ian Maund <imaund@codeaurora.org>
2018-01-02 22:36:43 +03:00
..
debug Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
events Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
gcov
irq Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
power Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
sched Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
time sched_clock: Add support for >32 bit sched_clock 2018-01-02 22:36:43 +03:00
trace Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
.gitignore kernel/hz.bc: ignore. 2016-10-29 23:12:15 +08:00
acct.c
async.c Fix a dead loop in async_synchronize_full() 2012-10-02 10:30:35 -07:00
audit.c audit: wait_for_auditd() should use TASK_UNINTERRUPTIBLE 2014-04-14 06:44:15 -07:00
audit.h
audit_tree.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
audit_watch.c get rid of kern_path_parent() 2017-09-22 19:11:54 +03:00
auditfilter.c
auditsc.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
backtracetest.c
bounds.c
capability.c
cgroup.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
cgroup_freezer.c cgroup: cgroup_subsys->fork() should be called after the task is added to css_set 2014-03-11 16:10:03 -07:00
compat.c compat: Fix RT signal mask corruption via sigprocmask 2012-05-10 08:58:33 -07:00
configs.c
cpu.c CPU hotplug: Provide lockless versions of callback registration functions 2018-01-01 21:26:45 +03:00
cpu_pm.c
cpuset.c cpuset: PF_SPREAD_PAGE and PF_SPREAD_SLAB should be atomic flags 2014-12-01 18:02:38 +08:00
crash_dump.c
cred.c cred: copy_process() should clear child->replacement_session_keyring 2012-04-11 08:20:11 -07:00
delayacct.c
dma.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
elfcore.c
exec_domain.c ANDROID: exec_domains: Disable request_module() call for personalities 2017-12-27 22:46:26 +03:00
exit.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
extable.c
fork.c seccomp: Replace BUG(!spin_is_locked()) with assert_spin_lock 2017-12-27 22:42:09 +03:00
freezer.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
futex.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
futex_compat.c futex: Revert "futex: Mark get_robust_list as deprecated" 2013-02-28 06:59:01 -08:00
groups.c
hrtimer.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
hung_task.c hung_task: fix the broken rcu_lock_break() logic 2012-03-05 15:49:42 -08:00
irq_work.c irq_work: fix compile failure on tile from missing include 2012-04-13 13:15:16 -04:00
itimer.c itimer: Use printk_once instead of WARN_ONCE 2012-04-10 11:00:30 +02:00
jump_label.c static keys: Inline the static_key_enabled() function 2012-02-28 20:01:08 +01:00
kallsyms.c vsprintf: Fix %ps on non symbols when using kallsyms 2013-02-08 15:14:22 -08:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks locking/kconfig: Simplify INLINE_SPIN_UNLOCK usage 2012-03-23 13:18:57 +01:00
Kconfig.preempt locking/kconfig: Simplify INLINE_SPIN_UNLOCK usage 2012-03-23 13:18:57 +01:00
kexec.c Merge branch 'akpm' (Andrew's patch-bomb) 2012-03-28 17:19:28 -07:00
kfifo.c
kmod.c usermodehelper: check subprocess_info->path != NULL 2013-05-19 10:54:50 -07:00
kprobes.c kprobes: return proper error code from register_kprobe() 2012-03-05 15:49:42 -08:00
ksysfs.c rcu: Add a module parameter to force use of expedited RCU primitives 2016-10-29 23:12:17 +08:00
kthread.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
latencytop.c
lglock.c brlocks/lglocks: turn into functions 2015-07-13 11:17:40 -07:00
lockdep.c lockdep: remove task argument from debug_check_no_locks_held 2013-07-12 14:22:56 -07:00
lockdep_internals.h
lockdep_proc.c
lockdep_states.h
Makefile hotplug: Fix UP bug in smpboot hotplug code 2016-10-29 23:12:39 +08:00
module.c module: Fix locking in symbol_put_addr() 2016-04-27 18:55:19 +08:00
mutex-debug.c
mutex-debug.h
mutex.c sched/rt: Use schedule_preempt_disabled() 2012-03-01 10:28:03 +01:00
mutex.h
notifier.c
nsproxy.c userns: make each net (net_ns) belong to a user_ns 2017-09-01 13:38:07 +03:00
padata.c padata: Fix cpu hotplug 2012-03-29 19:52:46 +08:00
panic.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
params.c params: <level>_initcall-like kernel parameters 2012-03-26 12:50:51 +10:30
pid.c proc: Usable inode numbers for the namespace file descriptors. 2015-07-13 11:18:01 -07:00
pid_namespace.c proc: Usable inode numbers for the namespace file descriptors. 2015-07-13 11:18:01 -07:00
posix-cpu-timers.c posix-cpu-timers: Fix nanosleep task_struct leak 2013-02-28 06:58:59 -08:00
posix-timers.c posix-timers: Fix stack info leak in timer_create() 2015-02-02 17:05:05 +08:00
printk.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
profile.c
ptrace.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
range.c
rcu.h rcu: Add a module parameter to force use of expedited RCU primitives 2016-10-29 23:12:17 +08:00
rcupdate.c rcu: Make exit_rcu() more precise and consolidate 2016-10-29 23:12:17 +08:00
rcutiny.c rcu: Correctly handle non-empty Tiny RCU callback list with none ready 2015-10-22 09:20:02 +08:00
rcutiny_plugin.h rcu: Make exit_rcu() more precise and consolidate 2016-10-29 23:12:17 +08:00
rcutorture.c PTR_ERR should be called before its argument is cleared. 2012-02-21 09:06:10 -08:00
rcutree.c rcu: Use smp_hotplug_thread facility for RCUs per-CPU kthread 2016-10-29 23:12:39 +08:00
rcutree.h rcu: Use smp_hotplug_thread facility for RCUs per-CPU kthread 2016-10-29 23:12:39 +08:00
rcutree_plugin.h rcu: Use smp_hotplug_thread facility for RCUs per-CPU kthread 2016-10-29 23:12:39 +08:00
rcutree_trace.c rcu: Use smp_hotplug_thread facility for RCUs per-CPU kthread 2016-10-29 23:12:39 +08:00
relay.c splice: fix racy pipe->buffers uses 2012-07-16 09:04:42 -07:00
res_counter.c
resource.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
rtmutex-debug.c
rtmutex-debug.h rtmutex: Handle deadlock detection smarter 2014-07-17 15:39:50 -07:00
rtmutex-tester.c
rtmutex.c rtmutex: Plug slow unlock race 2014-07-17 15:39:50 -07:00
rtmutex.h rtmutex: Handle deadlock detection smarter 2014-07-17 15:39:50 -07:00
rtmutex_common.h
rwsem.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
seccomp.c seccomp: Replace BUG(!spin_is_locked()) with assert_spin_lock 2017-12-27 22:42:09 +03:00
semaphore.c
signal.c BACKPORT: signal: allow to send any siginfo to itself 2017-12-27 22:49:08 +03:00
smp.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
smpboot.c smpboot: use kmemleak_not_leak for smpboot_thread_data 2016-10-29 23:12:40 +08:00
smpboot.h smpboot: Provide infrastructure for percpu hotplug threads 2016-10-29 23:12:39 +08:00
softirq.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
spinlock.c locking/kconfig: Simplify INLINE_SPIN_UNLOCK usage 2012-03-23 13:18:57 +01:00
srcu.c rcu: Call out dangers of expedited RCU primitives 2012-02-21 09:06:08 -08:00
stacktrace.c
stop_machine.c stop_machine: Mark per cpu stopper enabled early 2016-10-29 23:12:39 +08:00
sys.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
sys_ni.c seccomp: add "seccomp" syscall 2014-10-31 19:46:27 -07:00
sysctl.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
sysctl_binary.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
taskstats.c
test_kprobes.c
time.c jiffies: Fix timeval conversion to jiffies 2016-10-29 23:12:15 +08:00
timeconst.bc kernel: Replace timeconst.pl with a bc script 2016-10-29 23:12:15 +08:00
timer.c tick: Upstream fixes 2017-08-25 20:00:22 +03:00
tracepoint.c tracepoint: Do not waste memory on mods with no tracepoints 2014-05-18 05:25:56 -07:00
tsacct.c
uid16.c
up.c
user-return-notifier.c
user.c proc: Usable inode numbers for the namespace file descriptors. 2015-07-13 11:18:01 -07:00
user_namespace.c proc: Usable inode numbers for the namespace file descriptors. 2015-07-13 11:18:01 -07:00
utsname.c proc: Usable inode numbers for the namespace file descriptors. 2015-07-13 11:18:01 -07:00
utsname_sysctl.c
wait.c
watchdog.c kernel/watchdog.c: touch_nmi_watchdog should only touch local cpu not every one 2016-03-21 09:17:57 +08:00
workqueue.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
workqueue_sched.h