kernel_optimize_test/kernel/time
Arnd Bergmann 0df1c9868c timekeeping/vsyscall: Use __iter_div_u64_rem()
On 32-bit x86 when building with clang-9, the 'division' loop gets turned
back into an inefficient division that causes a link error:

kernel/time/vsyscall.o: In function `update_vsyscall':
vsyscall.c:(.text+0xe3): undefined reference to `__udivdi3'

Use the existing __iter_div_u64_rem() function which is used to address the
same issue in other places.

Fixes: 44f57d788e ("timekeeping: Provide a generic update_vsyscall() implementation")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Tested-by: Nathan Chancellor <natechancellor@gmail.com>
Link: https://lkml.kernel.org/r/20190710130206.1670830-1-arnd@arndb.de
2019-07-10 20:37:49 +02:00
..
alarmtimer.c alarmtimer: Fix kerneldoc comment for alarmtimer_suspend() 2019-06-14 17:04:04 +02:00
clockevents.c
clocksource.c clocksource: Move inline keyword to the beginning of function declarations 2019-06-14 17:04:03 +02:00
hrtimer.c hrtimer: Use a bullet for the returns bullet list 2019-06-27 23:30:04 +02:00
itimer.c
jiffies.c
Kconfig
Makefile timekeeping: Provide a generic update_vsyscall() implementation 2019-06-22 21:21:06 +02:00
ntp_internal.h
ntp.c ntp: Limit TAI-UTC offset 2019-06-22 11:28:53 +02:00
posix-clock.c
posix-cpu-timers.c
posix-stubs.c
posix-timers.c posix-timers: Use spin_lock_irq() in itimer_delete() 2019-06-22 12:14:22 +02:00
posix-timers.h
sched_clock.c
test_udelay.c
tick-broadcast-hrtimer.c
tick-broadcast.c
tick-common.c
tick-internal.h
tick-oneshot.c
tick-sched.c sched/fair: Remove the rq->cpu_load[] update code 2019-06-03 11:49:38 +02:00
tick-sched.h
time.c time: Validate user input in compat_settimeofday() 2019-07-07 12:05:40 +02:00
timeconst.bc
timeconv.c
timecounter.c
timekeeping_debug.c
timekeeping_internal.h
timekeeping.c timekeeping: Use proper ktime_add when adding nsecs in coarse offset 2019-06-22 12:11:27 +02:00
timekeeping.h
timer_list.c timer_list: Guard procfs specific code 2019-06-23 00:08:52 +02:00
timer.c
vsyscall.c timekeeping/vsyscall: Use __iter_div_u64_rem() 2019-07-10 20:37:49 +02:00