summaryrefslogtreecommitdiffstats
path: root/kernel/time
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2018-10-25 11:14:36 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-10-25 11:14:36 -0700
commit4dcb9239dad6cee17c538482619a5b659774ee51 (patch)
treeb2a98a00eb4e419fb363f49f179c4cbd7b5b7c87 /kernel/time
parent3acbd2de6bc3af215c6ed7732dfc097d1e238503 (diff)
parentd59e0ba19481c0046d2ea2bd0e5344eeaf45aace (diff)
downloadlinux-4dcb9239dad6cee17c538482619a5b659774ee51.tar.bz2
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timekeeping updates from Thomas Gleixner: "The timers and timekeeping departement provides: - Another large y2038 update with further preparations for providing the y2038 safe timespecs closer to the syscalls. - An overhaul of the SHCMT clocksource driver - SPDX license identifier updates - Small cleanups and fixes all over the place" * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits) tick/sched : Remove redundant cpu_online() check clocksource/drivers/dw_apb: Add reset control clocksource: Remove obsolete CLOCKSOURCE_OF_DECLARE clocksource/drivers: Unify the names to timer-* format clocksource/drivers/sh_cmt: Add R-Car gen3 support dt-bindings: timer: renesas: cmt: document R-Car gen3 support clocksource/drivers/sh_cmt: Properly line-wrap sh_cmt_of_table[] initializer clocksource/drivers/sh_cmt: Fix clocksource width for 32-bit machines clocksource/drivers/sh_cmt: Fixup for 64-bit machines clocksource/drivers/sh_tmu: Convert to SPDX identifiers clocksource/drivers/sh_mtu2: Convert to SPDX identifiers clocksource/drivers/sh_cmt: Convert to SPDX identifiers clocksource/drivers/renesas-ostm: Convert to SPDX identifiers clocksource: Convert to using %pOFn instead of device_node.name tick/broadcast: Remove redundant check RISC-V: Request newstat syscalls y2038: signal: Change rt_sigtimedwait to use __kernel_timespec y2038: socket: Change recvmmsg to use __kernel_timespec y2038: sched: Change sched_rr_get_interval to use __kernel_timespec y2038: utimes: Rework #ifdef guards for compat syscalls ...
Diffstat (limited to 'kernel/time')
-rw-r--r--kernel/time/hrtimer.c8
-rw-r--r--kernel/time/posix-stubs.c18
-rw-r--r--kernel/time/posix-timers.c30
-rw-r--r--kernel/time/tick-broadcast.c2
-rw-r--r--kernel/time/tick-sched.c2
-rw-r--r--kernel/time/time.c97
-rw-r--r--kernel/time/timekeeping.c24
7 files changed, 67 insertions, 114 deletions
diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c
index e1a549c9e399..9cdd74bd2d27 100644
--- a/kernel/time/hrtimer.c
+++ b/kernel/time/hrtimer.c
@@ -1660,7 +1660,7 @@ int nanosleep_copyout(struct restart_block *restart, struct timespec64 *ts)
switch(restart->nanosleep.type) {
#ifdef CONFIG_COMPAT_32BIT_TIME
case TT_COMPAT:
- if (compat_put_timespec64(ts, restart->nanosleep.compat_rmtp))
+ if (put_old_timespec32(ts, restart->nanosleep.compat_rmtp))
return -EFAULT;
break;
#endif
@@ -1780,12 +1780,12 @@ SYSCALL_DEFINE2(nanosleep, struct __kernel_timespec __user *, rqtp,
#ifdef CONFIG_COMPAT_32BIT_TIME
-COMPAT_SYSCALL_DEFINE2(nanosleep, struct compat_timespec __user *, rqtp,
- struct compat_timespec __user *, rmtp)
+COMPAT_SYSCALL_DEFINE2(nanosleep, struct old_timespec32 __user *, rqtp,
+ struct old_timespec32 __user *, rmtp)
{
struct timespec64 tu;
- if (compat_get_timespec64(&tu, rqtp))
+ if (get_old_timespec32(&tu, rqtp))
return -EFAULT;
if (!timespec64_valid(&tu))
diff --git a/kernel/time/posix-stubs.c b/kernel/time/posix-stubs.c
index 2c6847d5d69b..989ccf028bde 100644
--- a/kernel/time/posix-stubs.c
+++ b/kernel/time/posix-stubs.c
@@ -162,20 +162,20 @@ COMPAT_SYS_NI(setitimer);
#ifdef CONFIG_COMPAT_32BIT_TIME
COMPAT_SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock,
- struct compat_timespec __user *, tp)
+ struct old_timespec32 __user *, tp)
{
struct timespec64 new_tp;
if (which_clock != CLOCK_REALTIME)
return -EINVAL;
- if (compat_get_timespec64(&new_tp, tp))
+ if (get_old_timespec32(&new_tp, tp))
return -EFAULT;
return do_sys_settimeofday64(&new_tp, NULL);
}
COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock,
- struct compat_timespec __user *, tp)
+ struct old_timespec32 __user *, tp)
{
int ret;
struct timespec64 kernel_tp;
@@ -184,13 +184,13 @@ COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock,
if (ret)
return ret;
- if (compat_put_timespec64(&kernel_tp, tp))
+ if (put_old_timespec32(&kernel_tp, tp))
return -EFAULT;
return 0;
}
COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock,
- struct compat_timespec __user *, tp)
+ struct old_timespec32 __user *, tp)
{
struct timespec64 rtn_tp = {
.tv_sec = 0,
@@ -201,7 +201,7 @@ COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock,
case CLOCK_REALTIME:
case CLOCK_MONOTONIC:
case CLOCK_BOOTTIME:
- if (compat_put_timespec64(&rtn_tp, tp))
+ if (put_old_timespec32(&rtn_tp, tp))
return -EFAULT;
return 0;
default:
@@ -210,8 +210,8 @@ COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock,
}
COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags,
- struct compat_timespec __user *, rqtp,
- struct compat_timespec __user *, rmtp)
+ struct old_timespec32 __user *, rqtp,
+ struct old_timespec32 __user *, rmtp)
{
struct timespec64 t;
@@ -224,7 +224,7 @@ COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags,
return -EINVAL;
}
- if (compat_get_timespec64(&t, rqtp))
+ if (get_old_timespec32(&t, rqtp))
return -EFAULT;
if (!timespec64_valid(&t))
return -EINVAL;
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index eabb4c22728d..bd62b5eeb5a0 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -755,13 +755,13 @@ SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id,
#ifdef CONFIG_COMPAT_32BIT_TIME
COMPAT_SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id,
- struct compat_itimerspec __user *, setting)
+ struct old_itimerspec32 __user *, setting)
{
struct itimerspec64 cur_setting;
int ret = do_timer_gettime(timer_id, &cur_setting);
if (!ret) {
- if (put_compat_itimerspec64(&cur_setting, setting))
+ if (put_old_itimerspec32(&cur_setting, setting))
ret = -EFAULT;
}
return ret;
@@ -928,8 +928,8 @@ SYSCALL_DEFINE4(timer_settime, timer_t, timer_id, int, flags,
#ifdef CONFIG_COMPAT_32BIT_TIME
COMPAT_SYSCALL_DEFINE4(timer_settime, timer_t, timer_id, int, flags,
- struct compat_itimerspec __user *, new,
- struct compat_itimerspec __user *, old)
+ struct old_itimerspec32 __user *, new,
+ struct old_itimerspec32 __user *, old)
{
struct itimerspec64 new_spec, old_spec;
struct itimerspec64 *rtn = old ? &old_spec : NULL;
@@ -937,12 +937,12 @@ COMPAT_SYSCALL_DEFINE4(timer_settime, timer_t, timer_id, int, flags,
if (!new)
return -EINVAL;
- if (get_compat_itimerspec64(&new_spec, new))
+ if (get_old_itimerspec32(&new_spec, new))
return -EFAULT;
error = do_timer_settime(timer_id, flags, &new_spec, rtn);
if (!error && old) {
- if (put_compat_itimerspec64(&old_spec, old))
+ if (put_old_itimerspec32(&old_spec, old))
error = -EFAULT;
}
return error;
@@ -1115,7 +1115,7 @@ SYSCALL_DEFINE2(clock_getres, const clockid_t, which_clock,
#ifdef CONFIG_COMPAT_32BIT_TIME
COMPAT_SYSCALL_DEFINE2(clock_settime, clockid_t, which_clock,
- struct compat_timespec __user *, tp)
+ struct old_timespec32 __user *, tp)
{
const struct k_clock *kc = clockid_to_kclock(which_clock);
struct timespec64 ts;
@@ -1123,14 +1123,14 @@ COMPAT_SYSCALL_DEFINE2(clock_settime, clockid_t, which_clock,
if (!kc || !kc->clock_set)
return -EINVAL;
- if (compat_get_timespec64(&ts, tp))
+ if (get_old_timespec32(&ts, tp))
return -EFAULT;
return kc->clock_set(which_clock, &ts);
}
COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock,
- struct compat_timespec __user *, tp)
+ struct old_timespec32 __user *, tp)
{
const struct k_clock *kc = clockid_to_kclock(which_clock);
struct timespec64 ts;
@@ -1141,7 +1141,7 @@ COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock,
err = kc->clock_get(which_clock, &ts);
- if (!err && compat_put_timespec64(&ts, tp))
+ if (!err && put_old_timespec32(&ts, tp))
err = -EFAULT;
return err;
@@ -1180,7 +1180,7 @@ COMPAT_SYSCALL_DEFINE2(clock_adjtime, clockid_t, which_clock,
#ifdef CONFIG_COMPAT_32BIT_TIME
COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock,
- struct compat_timespec __user *, tp)
+ struct old_timespec32 __user *, tp)
{
const struct k_clock *kc = clockid_to_kclock(which_clock);
struct timespec64 ts;
@@ -1190,7 +1190,7 @@ COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock,
return -EINVAL;
err = kc->clock_getres(which_clock, &ts);
- if (!err && tp && compat_put_timespec64(&ts, tp))
+ if (!err && tp && put_old_timespec32(&ts, tp))
return -EFAULT;
return err;
@@ -1237,8 +1237,8 @@ SYSCALL_DEFINE4(clock_nanosleep, const clockid_t, which_clock, int, flags,
#ifdef CONFIG_COMPAT_32BIT_TIME
COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags,
- struct compat_timespec __user *, rqtp,
- struct compat_timespec __user *, rmtp)
+ struct old_timespec32 __user *, rqtp,
+ struct old_timespec32 __user *, rmtp)
{
const struct k_clock *kc = clockid_to_kclock(which_clock);
struct timespec64 t;
@@ -1248,7 +1248,7 @@ COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags,
if (!kc->nsleep)
return -EOPNOTSUPP;
- if (compat_get_timespec64(&t, rqtp))
+ if (get_old_timespec32(&t, rqtp))
return -EFAULT;
if (!timespec64_valid(&t))
diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c
index aa2094d5dd27..be0aac2b4300 100644
--- a/kernel/time/tick-broadcast.c
+++ b/kernel/time/tick-broadcast.c
@@ -400,8 +400,6 @@ void tick_broadcast_control(enum tick_broadcast_mode mode)
if (tick_broadcast_forced)
break;
cpumask_clear_cpu(cpu, tick_broadcast_on);
- if (!tick_device_is_functional(dev))
- break;
if (cpumask_test_and_clear_cpu(cpu, tick_broadcast_mask)) {
if (tick_broadcast_device.mode ==
TICKDEV_MODE_PERIODIC)
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 5b33e2f5c0ed..69e673b88474 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -885,7 +885,7 @@ static bool can_stop_idle_tick(int cpu, struct tick_sched *ts)
if (need_resched())
return false;
- if (unlikely(local_softirq_pending() && cpu_online(cpu))) {
+ if (unlikely(local_softirq_pending())) {
static int ratelimit;
if (ratelimit < 10 &&
diff --git a/kernel/time/time.c b/kernel/time/time.c
index ccdb351277ee..e3a7f7fd3abc 100644
--- a/kernel/time/time.c
+++ b/kernel/time/time.c
@@ -104,12 +104,12 @@ SYSCALL_DEFINE1(stime, time_t __user *, tptr)
#ifdef CONFIG_COMPAT
#ifdef __ARCH_WANT_COMPAT_SYS_TIME
-/* compat_time_t is a 32 bit "long" and needs to get converted. */
-COMPAT_SYSCALL_DEFINE1(time, compat_time_t __user *, tloc)
+/* old_time32_t is a 32 bit "long" and needs to get converted. */
+COMPAT_SYSCALL_DEFINE1(time, old_time32_t __user *, tloc)
{
- compat_time_t i;
+ old_time32_t i;
- i = (compat_time_t)ktime_get_real_seconds();
+ i = (old_time32_t)ktime_get_real_seconds();
if (tloc) {
if (put_user(i,tloc))
@@ -119,7 +119,7 @@ COMPAT_SYSCALL_DEFINE1(time, compat_time_t __user *, tloc)
return i;
}
-COMPAT_SYSCALL_DEFINE1(stime, compat_time_t __user *, tptr)
+COMPAT_SYSCALL_DEFINE1(stime, old_time32_t __user *, tptr)
{
struct timespec64 tv;
int err;
@@ -144,9 +144,11 @@ SYSCALL_DEFINE2(gettimeofday, struct timeval __user *, tv,
struct timezone __user *, tz)
{
if (likely(tv != NULL)) {
- struct timeval ktv;
- do_gettimeofday(&ktv);
- if (copy_to_user(tv, &ktv, sizeof(ktv)))
+ struct timespec64 ts;
+
+ ktime_get_real_ts64(&ts);
+ if (put_user(ts.tv_sec, &tv->tv_sec) ||
+ put_user(ts.tv_nsec / 1000, &tv->tv_usec))
return -EFAULT;
}
if (unlikely(tz != NULL)) {
@@ -223,14 +225,15 @@ SYSCALL_DEFINE2(settimeofday, struct timeval __user *, tv,
}
#ifdef CONFIG_COMPAT
-COMPAT_SYSCALL_DEFINE2(gettimeofday, struct compat_timeval __user *, tv,
+COMPAT_SYSCALL_DEFINE2(gettimeofday, struct old_timeval32 __user *, tv,
struct timezone __user *, tz)
{
if (tv) {
- struct timeval ktv;
+ struct timespec64 ts;
- do_gettimeofday(&ktv);
- if (compat_put_timeval(&ktv, tv))
+ ktime_get_real_ts64(&ts);
+ if (put_user(ts.tv_sec, &tv->tv_sec) ||
+ put_user(ts.tv_nsec / 1000, &tv->tv_usec))
return -EFAULT;
}
if (tz) {
@@ -241,7 +244,7 @@ COMPAT_SYSCALL_DEFINE2(gettimeofday, struct compat_timeval __user *, tv,
return 0;
}
-COMPAT_SYSCALL_DEFINE2(settimeofday, struct compat_timeval __user *, tv,
+COMPAT_SYSCALL_DEFINE2(settimeofday, struct old_timeval32 __user *, tv,
struct timezone __user *, tz)
{
struct timespec64 new_ts;
@@ -342,30 +345,6 @@ unsigned int jiffies_to_usecs(const unsigned long j)
}
EXPORT_SYMBOL(jiffies_to_usecs);
-/**
- * timespec_trunc - Truncate timespec to a granularity
- * @t: Timespec
- * @gran: Granularity in ns.
- *
- * Truncate a timespec to a granularity. Always rounds down. gran must
- * not be 0 nor greater than a second (NSEC_PER_SEC, or 10^9 ns).
- */
-struct timespec timespec_trunc(struct timespec t, unsigned gran)
-{
- /* Avoid division in the common cases 1 ns and 1 s. */
- if (gran == 1) {
- /* nothing */
- } else if (gran == NSEC_PER_SEC) {
- t.tv_nsec = 0;
- } else if (gran > 1 && gran < NSEC_PER_SEC) {
- t.tv_nsec -= t.tv_nsec % gran;
- } else {
- WARN(1, "illegal file time granularity: %u", gran);
- }
- return t;
-}
-EXPORT_SYMBOL(timespec_trunc);
-
/*
* mktime64 - Converts date to seconds.
* Converts Gregorian date to seconds since 1970-01-01 00:00:00.
@@ -884,10 +863,10 @@ int put_timespec64(const struct timespec64 *ts,
}
EXPORT_SYMBOL_GPL(put_timespec64);
-int __compat_get_timespec64(struct timespec64 *ts64,
- const struct compat_timespec __user *cts)
+static int __get_old_timespec32(struct timespec64 *ts64,
+ const struct old_timespec32 __user *cts)
{
- struct compat_timespec ts;
+ struct old_timespec32 ts;
int ret;
ret = copy_from_user(&ts, cts, sizeof(ts));
@@ -900,33 +879,33 @@ int __compat_get_timespec64(struct timespec64 *ts64,
return 0;
}
-int __compat_put_timespec64(const struct timespec64 *ts64,
- struct compat_timespec __user *cts)
+static int __put_old_timespec32(const struct timespec64 *ts64,
+ struct old_timespec32 __user *cts)
{
- struct compat_timespec ts = {
+ struct old_timespec32 ts = {
.tv_sec = ts64->tv_sec,
.tv_nsec = ts64->tv_nsec
};
return copy_to_user(cts, &ts, sizeof(ts)) ? -EFAULT : 0;
}
-int compat_get_timespec64(struct timespec64 *ts, const void __user *uts)
+int get_old_timespec32(struct timespec64 *ts, const void __user *uts)
{
if (COMPAT_USE_64BIT_TIME)
return copy_from_user(ts, uts, sizeof(*ts)) ? -EFAULT : 0;
else
- return __compat_get_timespec64(ts, uts);
+ return __get_old_timespec32(ts, uts);
}
-EXPORT_SYMBOL_GPL(compat_get_timespec64);
+EXPORT_SYMBOL_GPL(get_old_timespec32);
-int compat_put_timespec64(const struct timespec64 *ts, void __user *uts)
+int put_old_timespec32(const struct timespec64 *ts, void __user *uts)
{
if (COMPAT_USE_64BIT_TIME)
return copy_to_user(uts, ts, sizeof(*ts)) ? -EFAULT : 0;
else
- return __compat_put_timespec64(ts, uts);
+ return __put_old_timespec32(ts, uts);
}
-EXPORT_SYMBOL_GPL(compat_put_timespec64);
+EXPORT_SYMBOL_GPL(put_old_timespec32);
int get_itimerspec64(struct itimerspec64 *it,
const struct __kernel_itimerspec __user *uit)
@@ -958,23 +937,23 @@ int put_itimerspec64(const struct itimerspec64 *it,
}
EXPORT_SYMBOL_GPL(put_itimerspec64);
-int get_compat_itimerspec64(struct itimerspec64 *its,
- const struct compat_itimerspec __user *uits)
+int get_old_itimerspec32(struct itimerspec64 *its,
+ const struct old_itimerspec32 __user *uits)
{
- if (__compat_get_timespec64(&its->it_interval, &uits->it_interval) ||
- __compat_get_timespec64(&its->it_value, &uits->it_value))
+ if (__get_old_timespec32(&its->it_interval, &uits->it_interval) ||
+ __get_old_timespec32(&its->it_value, &uits->it_value))
return -EFAULT;
return 0;
}
-EXPORT_SYMBOL_GPL(get_compat_itimerspec64);
+EXPORT_SYMBOL_GPL(get_old_itimerspec32);
-int put_compat_itimerspec64(const struct itimerspec64 *its,
- struct compat_itimerspec __user *uits)
+int put_old_itimerspec32(const struct itimerspec64 *its,
+ struct old_itimerspec32 __user *uits)
{
- if (__compat_put_timespec64(&its->it_interval, &uits->it_interval) ||
- __compat_put_timespec64(&its->it_value, &uits->it_value))
+ if (__put_old_timespec32(&its->it_interval, &uits->it_interval) ||
+ __put_old_timespec32(&its->it_value, &uits->it_value))
return -EFAULT;
return 0;
}
-EXPORT_SYMBOL_GPL(put_compat_itimerspec64);
+EXPORT_SYMBOL_GPL(put_old_itimerspec32);
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index f3b22f456fac..2d110c948805 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -1212,22 +1212,6 @@ int get_device_system_crosststamp(int (*get_time_fn)
EXPORT_SYMBOL_GPL(get_device_system_crosststamp);
/**
- * do_gettimeofday - Returns the time of day in a timeval
- * @tv: pointer to the timeval to be set
- *
- * NOTE: Users should be converted to using getnstimeofday()
- */
-void do_gettimeofday(struct timeval *tv)
-{
- struct timespec64 now;
-
- getnstimeofday64(&now);
- tv->tv_sec = now.tv_sec;
- tv->tv_usec = now.tv_nsec/1000;
-}
-EXPORT_SYMBOL(do_gettimeofday);
-
-/**
* do_settimeofday64 - Sets the time of day.
* @ts: pointer to the timespec64 variable containing the new time
*
@@ -2174,14 +2158,6 @@ void getboottime64(struct timespec64 *ts)
}
EXPORT_SYMBOL_GPL(getboottime64);
-unsigned long get_seconds(void)
-{
- struct timekeeper *tk = &tk_core.timekeeper;
-
- return tk->xtime_sec;
-}
-EXPORT_SYMBOL(get_seconds);
-
void ktime_get_coarse_real_ts64(struct timespec64 *ts)
{
struct timekeeper *tk = &tk_core.timekeeper;