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authorLinus Torvalds <torvalds@linux-foundation.org>2016-12-12 19:56:15 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-12 19:56:15 -0800
commit9465d9cc31fa732089cd8bec9f1bdfcdc174a5ce (patch)
treefb31a0a6271b255ffe6e29b4f9eb4192253f8c7f /arch
parente71c3978d6f97659f6c3ee942c3e581299e4adf2 (diff)
parentc029a2bec66e42e57538cb65e28618baf6a4b311 (diff)
downloadlinux-9465d9cc31fa732089cd8bec9f1bdfcdc174a5ce.tar.bz2
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner: "The time/timekeeping/timer folks deliver with this update: - Fix a reintroduced signed/unsigned issue and cleanup the whole signed/unsigned mess in the timekeeping core so this wont happen accidentaly again. - Add a new trace clock based on boot time - Prevent injection of random sleep times when PM tracing abuses the RTC for storage - Make posix timers configurable for real tiny systems - Add tracepoints for the alarm timer subsystem so timer based suspend wakeups can be instrumented - The usual pile of fixes and updates to core and drivers" * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits) timekeeping: Use mul_u64_u32_shr() instead of open coding it timekeeping: Get rid of pointless typecasts timekeeping: Make the conversion call chain consistently unsigned timekeeping_Force_unsigned_clocksource_to_nanoseconds_conversion alarmtimer: Add tracepoints for alarm timers trace: Update documentation for mono, mono_raw and boot clock trace: Add an option for boot clock as trace clock timekeeping: Add a fast and NMI safe boot clock timekeeping/clocksource_cyc2ns: Document intended range limitation timekeeping: Ignore the bogus sleep time if pm_trace is enabled selftests/timers: Fix spelling mistake "Asyncrhonous" -> "Asynchronous" clocksource/drivers/bcm2835_timer: Unmap region obtained by of_iomap clocksource/drivers/arm_arch_timer: Map frame with of_io_request_and_map() arm64: dts: rockchip: Arch counter doesn't tick in system suspend clocksource/drivers/arm_arch_timer: Don't assume clock runs in suspend posix-timers: Make them configurable posix_cpu_timers: Move the add_device_randomness() call to a proper place timer: Move sys_alarm from timer.c to itimer.c ptp_clock: Allow for it to be optional Kconfig: Regenerate *.c_shipped files after previous changes ...
Diffstat (limited to 'arch')
-rw-r--r--arch/alpha/kernel/osf_sys.c8
-rw-r--r--arch/arm64/boot/dts/rockchip/rk3399.dtsi1
-rw-r--r--arch/x86/kernel/rtc.c9
3 files changed, 18 insertions, 0 deletions
diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index ffb93f499c83..56e427c7aa3c 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -1029,11 +1029,16 @@ SYSCALL_DEFINE2(osf_settimeofday, struct timeval32 __user *, tv,
return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
}
+asmlinkage long sys_ni_posix_timers(void);
+
SYSCALL_DEFINE2(osf_getitimer, int, which, struct itimerval32 __user *, it)
{
struct itimerval kit;
int error;
+ if (!IS_ENABLED(CONFIG_POSIX_TIMERS))
+ return sys_ni_posix_timers();
+
error = do_getitimer(which, &kit);
if (!error && put_it32(it, &kit))
error = -EFAULT;
@@ -1047,6 +1052,9 @@ SYSCALL_DEFINE3(osf_setitimer, int, which, struct itimerval32 __user *, in,
struct itimerval kin, kout;
int error;
+ if (!IS_ENABLED(CONFIG_POSIX_TIMERS))
+ return sys_ni_posix_timers();
+
if (in) {
if (get_it32(&kin, in))
return -EFAULT;
diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
index 7afbfb0f96a3..1e24e455700b 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
@@ -174,6 +174,7 @@
<GIC_PPI 14 IRQ_TYPE_LEVEL_LOW 0>,
<GIC_PPI 11 IRQ_TYPE_LEVEL_LOW 0>,
<GIC_PPI 10 IRQ_TYPE_LEVEL_LOW 0>;
+ arm,no-tick-in-suspend;
};
xin24m: xin24m {
diff --git a/arch/x86/kernel/rtc.c b/arch/x86/kernel/rtc.c
index 79c6311cd912..5b21cb7d84d6 100644
--- a/arch/x86/kernel/rtc.c
+++ b/arch/x86/kernel/rtc.c
@@ -64,6 +64,15 @@ void mach_get_cmos_time(struct timespec *now)
unsigned int status, year, mon, day, hour, min, sec, century = 0;
unsigned long flags;
+ /*
+ * If pm_trace abused the RTC as storage, set the timespec to 0,
+ * which tells the caller that this RTC value is unusable.
+ */
+ if (!pm_trace_rtc_valid()) {
+ now->tv_sec = now->tv_nsec = 0;
+ return;
+ }
+
spin_lock_irqsave(&rtc_lock, flags);
/*