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Diffstat (limited to 'arch/s390/kernel/time.c')
-rw-r--r--arch/s390/kernel/time.c70
1 files changed, 38 insertions, 32 deletions
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index 14abad953c02..e9f47c3a6197 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -36,7 +36,6 @@
#include <linux/profile.h>
#include <linux/timex.h>
#include <linux/notifier.h>
-#include <linux/timekeeper_internal.h>
#include <linux/clockchips.h>
#include <linux/gfp.h>
#include <linux/kprobes.h>
@@ -131,7 +130,7 @@ void clock_comparator_work(void)
{
struct clock_event_device *cd;
- S390_lowcore.clock_comparator = clock_comparator_max;
+ get_lowcore()->clock_comparator = clock_comparator_max;
cd = this_cpu_ptr(&comparators);
cd->event_handler(cd);
}
@@ -139,8 +138,8 @@ void clock_comparator_work(void)
static int s390_next_event(unsigned long delta,
struct clock_event_device *evt)
{
- S390_lowcore.clock_comparator = get_tod_clock() + delta;
- set_clock_comparator(S390_lowcore.clock_comparator);
+ get_lowcore()->clock_comparator = get_tod_clock() + delta;
+ set_clock_comparator(get_lowcore()->clock_comparator);
return 0;
}
@@ -153,8 +152,8 @@ void init_cpu_timer(void)
struct clock_event_device *cd;
int cpu;
- S390_lowcore.clock_comparator = clock_comparator_max;
- set_clock_comparator(S390_lowcore.clock_comparator);
+ get_lowcore()->clock_comparator = clock_comparator_max;
+ set_clock_comparator(get_lowcore()->clock_comparator);
cpu = smp_processor_id();
cd = &per_cpu(comparators, cpu);
@@ -184,8 +183,8 @@ static void clock_comparator_interrupt(struct ext_code ext_code,
unsigned long param64)
{
inc_irq_stat(IRQEXT_CLK);
- if (S390_lowcore.clock_comparator == clock_comparator_max)
- set_clock_comparator(S390_lowcore.clock_comparator);
+ if (get_lowcore()->clock_comparator == clock_comparator_max)
+ set_clock_comparator(get_lowcore()->clock_comparator);
}
static void stp_timing_alert(struct stp_irq_parm *);
@@ -251,10 +250,11 @@ static struct clocksource clocksource_tod = {
.rating = 400,
.read = read_tod_clock,
.mask = CLOCKSOURCE_MASK(64),
- .mult = 1000,
- .shift = 12,
+ .mult = 4096000,
+ .shift = 24,
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
.vdso_clock_mode = VDSO_CLOCKMODE_TOD,
+ .id = CSID_S390_TOD,
};
struct clocksource * __init clocksource_default_clock(void)
@@ -408,12 +408,12 @@ static void clock_sync_global(long delta)
static void clock_sync_local(long delta)
{
/* Add the delta to the clock comparator. */
- if (S390_lowcore.clock_comparator != clock_comparator_max) {
- S390_lowcore.clock_comparator += delta;
- set_clock_comparator(S390_lowcore.clock_comparator);
+ if (get_lowcore()->clock_comparator != clock_comparator_max) {
+ get_lowcore()->clock_comparator += delta;
+ set_clock_comparator(get_lowcore()->clock_comparator);
}
/* Adjust the last_update_clock time-stamp. */
- S390_lowcore.last_update_clock += delta;
+ get_lowcore()->last_update_clock += delta;
}
/* Single threaded workqueue used for stp sync events */
@@ -468,6 +468,12 @@ static void __init stp_reset(void)
}
}
+bool stp_enabled(void)
+{
+ return test_bit(CLOCK_SYNC_HAS_STP, &clock_sync_flags) && stp_online;
+}
+EXPORT_SYMBOL(stp_enabled);
+
static void stp_timeout(struct timer_list *unused)
{
queue_work(time_sync_wq, &stp_work);
@@ -656,12 +662,12 @@ static void stp_check_leap(void)
if (ret < 0)
pr_err("failed to set leap second flags\n");
/* arm Timer to clear leap second flags */
- mod_timer(&stp_timer, jiffies + msecs_to_jiffies(14400 * MSEC_PER_SEC));
+ mod_timer(&stp_timer, jiffies + secs_to_jiffies(14400));
} else {
/* The day the leap second is scheduled for hasn't been reached. Retry
* in one hour.
*/
- mod_timer(&stp_timer, jiffies + msecs_to_jiffies(3600 * MSEC_PER_SEC));
+ mod_timer(&stp_timer, jiffies + secs_to_jiffies(3600));
}
}
@@ -716,7 +722,7 @@ out_unlock:
/*
* STP subsys sysfs interface functions
*/
-static struct bus_type stp_subsys = {
+static const struct bus_type stp_subsys = {
.name = "stp",
.dev_name = "stp",
};
@@ -729,8 +735,8 @@ static ssize_t ctn_id_show(struct device *dev,
mutex_lock(&stp_mutex);
if (stpinfo_valid())
- ret = sprintf(buf, "%016lx\n",
- *(unsigned long *) stp_info.ctnid);
+ ret = sysfs_emit(buf, "%016lx\n",
+ *(unsigned long *)stp_info.ctnid);
mutex_unlock(&stp_mutex);
return ret;
}
@@ -745,7 +751,7 @@ static ssize_t ctn_type_show(struct device *dev,
mutex_lock(&stp_mutex);
if (stpinfo_valid())
- ret = sprintf(buf, "%i\n", stp_info.ctn);
+ ret = sysfs_emit(buf, "%i\n", stp_info.ctn);
mutex_unlock(&stp_mutex);
return ret;
}
@@ -760,7 +766,7 @@ static ssize_t dst_offset_show(struct device *dev,
mutex_lock(&stp_mutex);
if (stpinfo_valid() && (stp_info.vbits & 0x2000))
- ret = sprintf(buf, "%i\n", (int)(s16) stp_info.dsto);
+ ret = sysfs_emit(buf, "%i\n", (int)(s16)stp_info.dsto);
mutex_unlock(&stp_mutex);
return ret;
}
@@ -775,7 +781,7 @@ static ssize_t leap_seconds_show(struct device *dev,
mutex_lock(&stp_mutex);
if (stpinfo_valid() && (stp_info.vbits & 0x8000))
- ret = sprintf(buf, "%i\n", (int)(s16) stp_info.leaps);
+ ret = sysfs_emit(buf, "%i\n", (int)(s16)stp_info.leaps);
mutex_unlock(&stp_mutex);
return ret;
}
@@ -801,11 +807,11 @@ static ssize_t leap_seconds_scheduled_show(struct device *dev,
return ret;
if (!stzi.lsoib.p)
- return sprintf(buf, "0,0\n");
+ return sysfs_emit(buf, "0,0\n");
- return sprintf(buf, "%lu,%d\n",
- tod_to_ns(stzi.lsoib.nlsout - TOD_UNIX_EPOCH) / NSEC_PER_SEC,
- stzi.lsoib.nlso - stzi.lsoib.also);
+ return sysfs_emit(buf, "%lu,%d\n",
+ tod_to_ns(stzi.lsoib.nlsout - TOD_UNIX_EPOCH) / NSEC_PER_SEC,
+ stzi.lsoib.nlso - stzi.lsoib.also);
}
static DEVICE_ATTR_RO(leap_seconds_scheduled);
@@ -818,7 +824,7 @@ static ssize_t stratum_show(struct device *dev,
mutex_lock(&stp_mutex);
if (stpinfo_valid())
- ret = sprintf(buf, "%i\n", (int)(s16) stp_info.stratum);
+ ret = sysfs_emit(buf, "%i\n", (int)(s16)stp_info.stratum);
mutex_unlock(&stp_mutex);
return ret;
}
@@ -833,7 +839,7 @@ static ssize_t time_offset_show(struct device *dev,
mutex_lock(&stp_mutex);
if (stpinfo_valid() && (stp_info.vbits & 0x0800))
- ret = sprintf(buf, "%i\n", (int) stp_info.tto);
+ ret = sysfs_emit(buf, "%i\n", (int)stp_info.tto);
mutex_unlock(&stp_mutex);
return ret;
}
@@ -848,7 +854,7 @@ static ssize_t time_zone_offset_show(struct device *dev,
mutex_lock(&stp_mutex);
if (stpinfo_valid() && (stp_info.vbits & 0x4000))
- ret = sprintf(buf, "%i\n", (int)(s16) stp_info.tzo);
+ ret = sysfs_emit(buf, "%i\n", (int)(s16)stp_info.tzo);
mutex_unlock(&stp_mutex);
return ret;
}
@@ -863,7 +869,7 @@ static ssize_t timing_mode_show(struct device *dev,
mutex_lock(&stp_mutex);
if (stpinfo_valid())
- ret = sprintf(buf, "%i\n", stp_info.tmd);
+ ret = sysfs_emit(buf, "%i\n", stp_info.tmd);
mutex_unlock(&stp_mutex);
return ret;
}
@@ -878,7 +884,7 @@ static ssize_t timing_state_show(struct device *dev,
mutex_lock(&stp_mutex);
if (stpinfo_valid())
- ret = sprintf(buf, "%i\n", stp_info.tst);
+ ret = sysfs_emit(buf, "%i\n", stp_info.tst);
mutex_unlock(&stp_mutex);
return ret;
}
@@ -889,7 +895,7 @@ static ssize_t online_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- return sprintf(buf, "%i\n", stp_online);
+ return sysfs_emit(buf, "%i\n", stp_online);
}
static ssize_t online_store(struct device *dev,
generated by cgit (git 2.34.1) at 2025-07-23 08:54:09 +0000