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android_kernel_samsung_msm8976/kernel
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Geert Uytterhoeven e12f20401a time: Make sure jiffies_to_msecs() preserves non-zero time periods 
commit abcbcb80cd09cd40f2089d912764e315459b71f7 upstream.

For the common cases where 1000 is a multiple of HZ, or HZ is a multiple of
1000, jiffies_to_msecs() never returns zero when passed a non-zero time
period.

However, if HZ > 1000 and not an integer multiple of 1000 (e.g. 1024 or
1200, as used on alpha and DECstation), jiffies_to_msecs() may return zero
for small non-zero time periods.  This may break code that relies on
receiving back a non-zero value.

jiffies_to_usecs() does not need such a fix: one jiffy can only be less
than one µs if HZ > 1000000, and such large values of HZ are already
rejected at build time, twice:

  - include/linux/jiffies.h does #error if HZ >= 12288,
  - kernel/time/time.c has BUILD_BUG_ON(HZ > USEC_PER_SEC).

Broken since forever.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: linux-alpha@vger.kernel.org
Cc: linux-mips@linux-mips.org
Link: https://lkml.kernel.org/r/20180622143357.7495-1-geert@linux-m68k.org
[bwh: Backported to 3.16: adjust filename]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2019-07-27 21:52:48 +02:00
..
cpu sched/idle: Add missing checks to the exit condition of cpu_idle_poll() 2019-07-27 21:50:45 +02:00
debug This is the 3.10.73 stable release 2015-04-24 18:14:57 -07:00
events perf/ring_buffer: Prevent concurent ring buffer access 2019-07-27 21:52:38 +02:00
gcov
irq This is the 3.10.99 stable release 2017-04-18 17:17:46 +02:00
locking Import latest Samsung release 2017-04-18 03:43:52 +02:00
power PM / wakeup: Only update last time for active wakeup sources 2019-07-27 21:52:47 +02:00
rcu rcu: Don't disable CPU hotplug during OOM notifiers 2016-01-06 23:11:06 -08:00
sched sched/autogroup: Fix possible Spectre-v1 indexing for sched_prio_to_weight[] 2019-07-27 21:52:06 +02:00
time clocksource: Initialize cs->wd_list 2019-07-27 21:52:05 +02:00
trace ring-buffer: Allow for rescheduling when removing pages 2019-07-27 21:51:54 +02:00
.gitignore
acct.c
async.c kernel/async.c: revert "async: simplify lowest_in_progress()" 2019-07-27 21:49:48 +02:00
audit.c BACKPORT: audit: consistently record PIDs with task_tgid_nr() 2019-07-27 21:50:56 +02:00
audit.h Import latest Samsung release 2017-04-18 03:43:52 +02:00
audit_tree.c
audit_watch.c audit: fix use-after-free in audit_add_watch 2019-07-27 21:51:40 +02:00
auditfilter.c
auditsc.c BACKPORT: audit: consistently record PIDs with task_tgid_nr() 2019-07-27 21:50:56 +02:00
backtracetest.c
bounds.c
capability.c
cgroup.c cgroup: prefer %pK to %p 2016-12-06 09:24:09 -08:00
cgroup_freezer.c
compat.c
configs.c
context_tracking.c
cpu.c cpu: send KOBJ_ONLINE event when enabling cpus 2017-07-24 01:09:04 -07:00
cpu_pm.c
cpuset.c cpuset: PF_SPREAD_PAGE and PF_SPREAD_SLAB should be atomic flags 2019-07-27 21:44:59 +02:00
crash_dump.c Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux 2011-11-06 19:44:47 -08:00
cred.c
delayacct.c
dma.c
elfcore.c
exec_domain.c ANDROID: exec_domains: Disable request_module() call for personalities 2016-05-18 14:34:40 +05:30
exit.c kernel: Only expose su when daemon is running 2017-05-15 14:43:52 +00:00
extable.c kernel/extable.c: mark core_kernel_text notrace 2019-07-27 21:44:25 +02:00
fork.c fork: don't copy inconsistent signal handler state to child 2019-07-27 21:51:36 +02:00
freezer.c This is the 3.10.67 stable release 2015-04-24 18:04:40 -07:00
futex.c futex: Remove unnecessary warning from get_futex_key 2019-07-27 21:51:41 +02:00
futex_compat.c ptrace: use fsuid, fsgid, effective creds for fs access checks 2016-02-25 11:57:47 -08:00
groups.c kernel: make groups_sort calling a responsibility group_info allocators 2019-07-27 21:46:18 +02:00
hrtimer.c hrtimer: Ensure POSIX compliance (relative CLOCK_REALTIME hrtimers) 2019-07-27 21:49:51 +02:00
hung_task.c
irq_work.c irq_work: Remove BUG_ON in irq_work_run() 2016-01-07 00:42:12 -08:00
itimer.c itimer: Use printk_once instead of WARN_ONCE 2012-04-10 11:00:30 +02:00
jump_label.c
kallsyms.c Import latest Samsung release 2017-04-18 03:43:52 +02:00
kcmp.c ptrace: use fsuid, fsgid, effective creds for fs access checks 2016-02-25 11:57:47 -08:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks Import latest Samsung release 2017-04-18 03:43:52 +02:00
Kconfig.preempt
kexec.c
kmod.c
kprobes.c
ksysfs.c
kthread.c kthread: Fix the race condition when kthread is parked 2015-06-04 17:43:41 -07:00
latencytop.c
Makefile UPSTREAM: KEYS: Separate the kernel signature checking keyring from module signing 2016-05-18 14:36:10 +05:30
modsign_pubkey.c
module-internal.h UPSTREAM: KEYS: Separate the kernel signature checking keyring from module signing 2016-05-18 14:36:10 +05:30
module.c module: Invalidate signatures on force-loaded modules 2019-07-27 21:42:00 +02:00
module_signing.c UPSTREAM: KEYS: Separate the kernel signature checking keyring from module signing 2016-05-18 14:36:10 +05:30
notifier.c
nsproxy.c
padata.c padata: avoid race in reordering 2019-07-27 21:44:05 +02:00
panic.c printk: do cond_resched() between lines while outputting to consoles 2019-07-27 21:41:46 +02:00
params.c kernel/params.c: align add_sysfs_param documentation with code 2019-07-27 21:45:35 +02:00
pid.c BACKPORT: FROMLIST: pids: make task_tgid_nr_ns() safe 2018-05-26 00:39:33 +02:00
pid_namespace.c
posix-cpu-timers.c
posix-timers.c posix-timers: Protect posix clock array access against speculation 2019-07-27 21:49:25 +02:00
printk.c printk: use rcuidle console tracepoint 2019-07-27 21:44:09 +02:00
profile.c
ptrace.c ptrace: change __ptrace_unlink() to clear ->ptrace under ->siglock 2019-07-27 21:45:46 +02:00
range.c
relay.c kernel/relay.c: limit kmalloc size to KMALLOC_MAX_SIZE 2019-07-27 21:49:13 +02:00
res_counter.c
resource.c resource: fix integer overflow at reallocation 2019-07-27 21:52:16 +02:00
seccomp.c UPSTREAM: seccomp: always propagate NO_NEW_PRIVS on tsync 2019-07-27 21:51:01 +02:00
signal.c signal: Only reschedule timers on signals timers have sent 2019-07-27 21:44:51 +02:00
smp.c Import latest Samsung release 2017-04-18 03:43:52 +02:00
smpboot.c smpboot: use kmemleak_not_leak for smpboot_thread_data 2015-05-11 17:07:29 +05:30
smpboot.h
softirq.c Import latest Samsung release 2017-04-18 03:43:52 +02:00
stacktrace.c
stop_machine.c
sys.c kernel/sys.c: fix potential Spectre v1 issue 2019-07-27 21:52:10 +02:00
sys_ni.c seccomp: add "seccomp" syscall 2015-03-19 14:52:50 -07:00
sysctl.c pipe: reject F_SETPIPE_SZ with size over UINT_MAX 2019-07-27 21:49:46 +02:00
sysctl_binary.c
system_certificates.S UPSTREAM: KEYS: Separate the kernel signature checking keyring from module signing 2016-05-18 14:36:10 +05:30
system_keyring.c UPSTREAM: KEYS: Separate the kernel signature checking keyring from module signing 2016-05-18 14:36:10 +05:30
task_work.c
taskstats.c
test_kprobes.c
time.c time: Make sure jiffies_to_msecs() preserves non-zero time periods 2019-07-27 21:52:48 +02:00
timeconst.bc
timer.c timers: Use proper base migration in add_timer_on() 2019-07-27 21:42:23 +02:00
tracepoint.c tracepoint: Do not waste memory on mods with no tracepoints 2014-05-30 21:52:11 -07:00
tsacct.c
uid16.c kernel: make groups_sort calling a responsibility group_info allocators 2019-07-27 21:46:18 +02:00
up.c
user-return-notifier.c
user.c
user_namespace.c userns: move user access out of the mutex 2019-07-27 21:51:26 +02:00
utsname.c
utsname_sysctl.c
watchdog.c
workqueue.c workqueue: trigger WARN if queue_delayed_work() is called with NULL @wq 2019-07-27 21:45:23 +02:00
workqueue_internal.h