summaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/kernel/smp_twd.c1
-rw-r--r--arch/mips/ralink/Kconfig7
-rw-r--r--arch/mips/ralink/Makefile2
-rw-r--r--arch/mips/ralink/cevt-rt3352.c153
-rw-r--r--arch/powerpc/kernel/rtas.c21
-rw-r--r--arch/riscv/configs/defconfig1
-rw-r--r--arch/x86/Kconfig1
-rw-r--r--arch/x86/include/asm/timer.h2
-rw-r--r--arch/x86/kvm/xen.c12
9 files changed, 9 insertions, 191 deletions
diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c
index 9a14f721a2b0..42a3706e16a6 100644
--- a/arch/arm/kernel/smp_twd.c
+++ b/arch/arm/kernel/smp_twd.c
@@ -93,7 +93,6 @@ static void twd_timer_stop(void)
{
struct clock_event_device *clk = raw_cpu_ptr(twd_evt);
- twd_shutdown(clk);
disable_percpu_irq(clk->irq);
}
diff --git a/arch/mips/ralink/Kconfig b/arch/mips/ralink/Kconfig
index 08c012a2591f..910d059ec70b 100644
--- a/arch/mips/ralink/Kconfig
+++ b/arch/mips/ralink/Kconfig
@@ -1,13 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
if RALINK
-config CLKEVT_RT3352
- bool
- depends on SOC_RT305X || SOC_MT7620
- default y
- select TIMER_OF
- select CLKSRC_MMIO
-
config RALINK_ILL_ACC
bool
depends on SOC_RT305X
diff --git a/arch/mips/ralink/Makefile b/arch/mips/ralink/Makefile
index 26fabbdea1f1..0c109eae1953 100644
--- a/arch/mips/ralink/Makefile
+++ b/arch/mips/ralink/Makefile
@@ -10,8 +10,6 @@ ifndef CONFIG_MIPS_GIC
obj-y += clk.o timer.o
endif
-obj-$(CONFIG_CLKEVT_RT3352) += cevt-rt3352.o
-
obj-$(CONFIG_RALINK_ILL_ACC) += ill_acc.o
obj-$(CONFIG_IRQ_INTC) += irq.o
diff --git a/arch/mips/ralink/cevt-rt3352.c b/arch/mips/ralink/cevt-rt3352.c
deleted file mode 100644
index 269d4877d120..000000000000
--- a/arch/mips/ralink/cevt-rt3352.c
+++ /dev/null
@@ -1,153 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2013 by John Crispin <john@phrozen.org>
- */
-
-#include <linux/clockchips.h>
-#include <linux/clocksource.h>
-#include <linux/interrupt.h>
-#include <linux/reset.h>
-#include <linux/init.h>
-#include <linux/time.h>
-#include <linux/of.h>
-#include <linux/of_irq.h>
-#include <linux/of_address.h>
-
-#include <asm/mach-ralink/ralink_regs.h>
-
-#define SYSTICK_FREQ (50 * 1000)
-
-#define SYSTICK_CONFIG 0x00
-#define SYSTICK_COMPARE 0x04
-#define SYSTICK_COUNT 0x08
-
-/* route systick irq to mips irq 7 instead of the r4k-timer */
-#define CFG_EXT_STK_EN 0x2
-/* enable the counter */
-#define CFG_CNT_EN 0x1
-
-struct systick_device {
- void __iomem *membase;
- struct clock_event_device dev;
- int irq_requested;
- int freq_scale;
-};
-
-static int systick_set_oneshot(struct clock_event_device *evt);
-static int systick_shutdown(struct clock_event_device *evt);
-
-static int systick_next_event(unsigned long delta,
- struct clock_event_device *evt)
-{
- struct systick_device *sdev;
- u32 count;
-
- sdev = container_of(evt, struct systick_device, dev);
- count = ioread32(sdev->membase + SYSTICK_COUNT);
- count = (count + delta) % SYSTICK_FREQ;
- iowrite32(count, sdev->membase + SYSTICK_COMPARE);
-
- return 0;
-}
-
-static void systick_event_handler(struct clock_event_device *dev)
-{
- /* noting to do here */
-}
-
-static irqreturn_t systick_interrupt(int irq, void *dev_id)
-{
- struct clock_event_device *dev = (struct clock_event_device *) dev_id;
-
- dev->event_handler(dev);
-
- return IRQ_HANDLED;
-}
-
-static struct systick_device systick = {
- .dev = {
- /*
- * cevt-r4k uses 300, make sure systick
- * gets used if available
- */
- .rating = 310,
- .features = CLOCK_EVT_FEAT_ONESHOT,
- .set_next_event = systick_next_event,
- .set_state_shutdown = systick_shutdown,
- .set_state_oneshot = systick_set_oneshot,
- .event_handler = systick_event_handler,
- },
-};
-
-static int systick_shutdown(struct clock_event_device *evt)
-{
- struct systick_device *sdev;
-
- sdev = container_of(evt, struct systick_device, dev);
-
- if (sdev->irq_requested)
- free_irq(systick.dev.irq, &systick.dev);
- sdev->irq_requested = 0;
- iowrite32(0, systick.membase + SYSTICK_CONFIG);
-
- return 0;
-}
-
-static int systick_set_oneshot(struct clock_event_device *evt)
-{
- const char *name = systick.dev.name;
- struct systick_device *sdev;
- int irq = systick.dev.irq;
-
- sdev = container_of(evt, struct systick_device, dev);
-
- if (!sdev->irq_requested) {
- if (request_irq(irq, systick_interrupt,
- IRQF_PERCPU | IRQF_TIMER, name, &systick.dev))
- pr_err("Failed to request irq %d (%s)\n", irq, name);
- }
- sdev->irq_requested = 1;
- iowrite32(CFG_EXT_STK_EN | CFG_CNT_EN,
- systick.membase + SYSTICK_CONFIG);
-
- return 0;
-}
-
-static int __init ralink_systick_init(struct device_node *np)
-{
- int ret;
-
- systick.membase = of_iomap(np, 0);
- if (!systick.membase)
- return -ENXIO;
-
- systick.dev.name = np->name;
- clockevents_calc_mult_shift(&systick.dev, SYSTICK_FREQ, 60);
- systick.dev.max_delta_ns = clockevent_delta2ns(0x7fff, &systick.dev);
- systick.dev.max_delta_ticks = 0x7fff;
- systick.dev.min_delta_ns = clockevent_delta2ns(0x3, &systick.dev);
- systick.dev.min_delta_ticks = 0x3;
- systick.dev.irq = irq_of_parse_and_map(np, 0);
- if (!systick.dev.irq) {
- pr_err("%pOFn: request_irq failed", np);
- return -EINVAL;
- }
-
- ret = clocksource_mmio_init(systick.membase + SYSTICK_COUNT, np->name,
- SYSTICK_FREQ, 301, 16,
- clocksource_mmio_readl_up);
- if (ret)
- return ret;
-
- clockevents_register_device(&systick.dev);
-
- pr_info("%pOFn: running - mult: %d, shift: %d\n",
- np, systick.dev.mult, systick.dev.shift);
-
- return 0;
-}
-
-TIMER_OF_DECLARE(systick, "ralink,cevt-systick", ralink_systick_init);
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index f7e86e09c49f..d31c9799cab2 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -1390,21 +1390,14 @@ bool __ref rtas_busy_delay(int status)
*/
ms = clamp(ms, 1U, 1000U);
/*
- * The delay hint is an order-of-magnitude suggestion, not
- * a minimum. It is fine, possibly even advantageous, for
- * us to pause for less time than hinted. For small values,
- * use usleep_range() to ensure we don't sleep much longer
- * than actually needed.
- *
- * See Documentation/timers/timers-howto.rst for
- * explanation of the threshold used here. In effect we use
- * usleep_range() for 9900 and 9901, msleep() for
- * 9902-9905.
+ * The delay hint is an order-of-magnitude suggestion, not a
+ * minimum. It is fine, possibly even advantageous, for us to
+ * pause for less time than hinted. To make sure pause time will
+ * not be way longer than requested independent of HZ
+ * configuration, use fsleep(). See fsleep() for details of
+ * used sleeping functions.
*/
- if (ms <= 20)
- usleep_range(ms * 100, ms * 1000);
- else
- msleep(ms);
+ fsleep(ms * 1000);
break;
case RTAS_BUSY:
ret = true;
diff --git a/arch/riscv/configs/defconfig b/arch/riscv/configs/defconfig
index 5b1d6325df85..1d5e13b148f2 100644
--- a/arch/riscv/configs/defconfig
+++ b/arch/riscv/configs/defconfig
@@ -302,7 +302,6 @@ CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_DEBUG_PER_CPU_MAPS=y
CONFIG_SOFTLOCKUP_DETECTOR=y
CONFIG_WQ_WATCHDOG=y
-CONFIG_DEBUG_TIMEKEEPING=y
CONFIG_DEBUG_RT_MUTEXES=y
CONFIG_DEBUG_SPINLOCK=y
CONFIG_DEBUG_MUTEXES=y
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 8f5362a2498f..a3c31b784edc 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -146,7 +146,6 @@ config X86
select ARCH_HAS_PARANOID_L1D_FLUSH
select BUILDTIME_TABLE_SORT
select CLKEVT_I8253
- select CLOCKSOURCE_VALIDATE_LAST_CYCLE
select CLOCKSOURCE_WATCHDOG
# Word-size accesses may read uninitialized data past the trailing \0
# in strings and cause false KMSAN reports.
diff --git a/arch/x86/include/asm/timer.h b/arch/x86/include/asm/timer.h
index 7365dd4acffb..23baf8c9b34c 100644
--- a/arch/x86/include/asm/timer.h
+++ b/arch/x86/include/asm/timer.h
@@ -6,8 +6,6 @@
#include <linux/interrupt.h>
#include <linux/math64.h>
-#define TICK_SIZE (tick_nsec / 1000)
-
unsigned long long native_sched_clock(void);
extern void recalibrate_cpu_khz(void);
diff --git a/arch/x86/kvm/xen.c b/arch/x86/kvm/xen.c
index 622fe24da910..a909b817b9c0 100644
--- a/arch/x86/kvm/xen.c
+++ b/arch/x86/kvm/xen.c
@@ -263,13 +263,6 @@ static void kvm_xen_stop_timer(struct kvm_vcpu *vcpu)
atomic_set(&vcpu->arch.xen.timer_pending, 0);
}
-static void kvm_xen_init_timer(struct kvm_vcpu *vcpu)
-{
- hrtimer_init(&vcpu->arch.xen.timer, CLOCK_MONOTONIC,
- HRTIMER_MODE_ABS_HARD);
- vcpu->arch.xen.timer.function = xen_timer_callback;
-}
-
static void kvm_xen_update_runstate_guest(struct kvm_vcpu *v, bool atomic)
{
struct kvm_vcpu_xen *vx = &v->arch.xen;
@@ -1070,9 +1063,6 @@ int kvm_xen_vcpu_set_attr(struct kvm_vcpu *vcpu, struct kvm_xen_vcpu_attr *data)
break;
}
- if (!vcpu->arch.xen.timer.function)
- kvm_xen_init_timer(vcpu);
-
/* Stop the timer (if it's running) before changing the vector */
kvm_xen_stop_timer(vcpu);
vcpu->arch.xen.timer_virq = data->u.timer.port;
@@ -2235,6 +2225,8 @@ void kvm_xen_init_vcpu(struct kvm_vcpu *vcpu)
vcpu->arch.xen.poll_evtchn = 0;
timer_setup(&vcpu->arch.xen.poll_timer, cancel_evtchn_poll, 0);
+ hrtimer_init(&vcpu->arch.xen.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_HARD);
+ vcpu->arch.xen.timer.function = xen_timer_callback;
kvm_gpc_init(&vcpu->arch.xen.runstate_cache, vcpu->kvm);
kvm_gpc_init(&vcpu->arch.xen.runstate2_cache, vcpu->kvm);
generated by cgit v1.2.3 (git 2.25.1) at 2026-02-25 12:54:08 +0000