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-rw-r--r--arch/x86/kernel/apic/apic.c33
-rw-r--r--arch/x86/kernel/apic/hw_nmi.c1
-rw-r--r--arch/x86/kernel/apic/io_apic.c97
-rw-r--r--arch/x86/kernel/apic/x2apic_uv_x.c10
4 files changed, 66 insertions, 75 deletions
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 966673f4414..fabf01eff77 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -24,7 +24,7 @@
#include <linux/ftrace.h>
#include <linux/ioport.h>
#include <linux/module.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
#include <linux/delay.h>
#include <linux/timex.h>
#include <linux/dmar.h>
@@ -2046,7 +2046,7 @@ static struct {
unsigned int apic_thmr;
} apic_pm_state;
-static int lapic_suspend(struct sys_device *dev, pm_message_t state)
+static int lapic_suspend(void)
{
unsigned long flags;
int maxlvt;
@@ -2084,23 +2084,21 @@ static int lapic_suspend(struct sys_device *dev, pm_message_t state)
return 0;
}
-static int lapic_resume(struct sys_device *dev)
+static void lapic_resume(void)
{
unsigned int l, h;
unsigned long flags;
- int maxlvt;
- int ret = 0;
+ int maxlvt, ret;
struct IO_APIC_route_entry **ioapic_entries = NULL;
if (!apic_pm_state.active)
- return 0;
+ return;
local_irq_save(flags);
if (intr_remapping_enabled) {
ioapic_entries = alloc_ioapic_entries();
if (!ioapic_entries) {
WARN(1, "Alloc ioapic_entries in lapic resume failed.");
- ret = -ENOMEM;
goto restore;
}
@@ -2162,8 +2160,6 @@ static int lapic_resume(struct sys_device *dev)
}
restore:
local_irq_restore(flags);
-
- return ret;
}
/*
@@ -2171,17 +2167,11 @@ restore:
* are needed on every CPU up until machine_halt/restart/poweroff.
*/
-static struct sysdev_class lapic_sysclass = {
- .name = "lapic",
+static struct syscore_ops lapic_syscore_ops = {
.resume = lapic_resume,
.suspend = lapic_suspend,
};
-static struct sys_device device_lapic = {
- .id = 0,
- .cls = &lapic_sysclass,
-};
-
static void __cpuinit apic_pm_activate(void)
{
apic_pm_state.active = 1;
@@ -2189,16 +2179,11 @@ static void __cpuinit apic_pm_activate(void)
static int __init init_lapic_sysfs(void)
{
- int error;
-
- if (!cpu_has_apic)
- return 0;
/* XXX: remove suspend/resume procs if !apic_pm_state.active? */
+ if (cpu_has_apic)
+ register_syscore_ops(&lapic_syscore_ops);
- error = sysdev_class_register(&lapic_sysclass);
- if (!error)
- error = sysdev_register(&device_lapic);
- return error;
+ return 0;
}
/* local apic needs to resume before other devices access its registers. */
diff --git a/arch/x86/kernel/apic/hw_nmi.c b/arch/x86/kernel/apic/hw_nmi.c
index c4e557a1ebb..5260fe91bcb 100644
--- a/arch/x86/kernel/apic/hw_nmi.c
+++ b/arch/x86/kernel/apic/hw_nmi.c
@@ -16,6 +16,7 @@
#include <linux/kprobes.h>
#include <linux/nmi.h>
#include <linux/module.h>
+#include <linux/delay.h>
#ifdef CONFIG_HARDLOCKUP_DETECTOR
u64 hw_nmi_get_sample_period(void)
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 180ca240e03..68df09bba92 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -30,7 +30,7 @@
#include <linux/compiler.h>
#include <linux/acpi.h>
#include <linux/module.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
#include <linux/msi.h>
#include <linux/htirq.h>
#include <linux/freezer.h>
@@ -2918,89 +2918,84 @@ static int __init io_apic_bug_finalize(void)
late_initcall(io_apic_bug_finalize);
-struct sysfs_ioapic_data {
- struct sys_device dev;
- struct IO_APIC_route_entry entry[0];
-};
-static struct sysfs_ioapic_data * mp_ioapic_data[MAX_IO_APICS];
+static struct IO_APIC_route_entry *ioapic_saved_data[MAX_IO_APICS];
-static int ioapic_suspend(struct sys_device *dev, pm_message_t state)
+static void suspend_ioapic(int ioapic_id)
{
- struct IO_APIC_route_entry *entry;
- struct sysfs_ioapic_data *data;
+ struct IO_APIC_route_entry *saved_data = ioapic_saved_data[ioapic_id];
int i;
- data = container_of(dev, struct sysfs_ioapic_data, dev);
- entry = data->entry;
- for (i = 0; i < nr_ioapic_registers[dev->id]; i ++, entry ++ )
- *entry = ioapic_read_entry(dev->id, i);
+ if (!saved_data)
+ return;
+
+ for (i = 0; i < nr_ioapic_registers[ioapic_id]; i++)
+ saved_data[i] = ioapic_read_entry(ioapic_id, i);
+}
+
+static int ioapic_suspend(void)
+{
+ int ioapic_id;
+
+ for (ioapic_id = 0; ioapic_id < nr_ioapics; ioapic_id++)
+ suspend_ioapic(ioapic_id);
return 0;
}
-static int ioapic_resume(struct sys_device *dev)
+static void resume_ioapic(int ioapic_id)
{
- struct IO_APIC_route_entry *entry;
- struct sysfs_ioapic_data *data;
+ struct IO_APIC_route_entry *saved_data = ioapic_saved_data[ioapic_id];
unsigned long flags;
union IO_APIC_reg_00 reg_00;
int i;
- data = container_of(dev, struct sysfs_ioapic_data, dev);
- entry = data->entry;
+ if (!saved_data)
+ return;
raw_spin_lock_irqsave(&ioapic_lock, flags);
- reg_00.raw = io_apic_read(dev->id, 0);
- if (reg_00.bits.ID != mp_ioapics[dev->id].apicid) {
- reg_00.bits.ID = mp_ioapics[dev->id].apicid;
- io_apic_write(dev->id, 0, reg_00.raw);
+ reg_00.raw = io_apic_read(ioapic_id, 0);
+ if (reg_00.bits.ID != mp_ioapics[ioapic_id].apicid) {
+ reg_00.bits.ID = mp_ioapics[ioapic_id].apicid;
+ io_apic_write(ioapic_id, 0, reg_00.raw);
}
raw_spin_unlock_irqrestore(&ioapic_lock, flags);
- for (i = 0; i < nr_ioapic_registers[dev->id]; i++)
- ioapic_write_entry(dev->id, i, entry[i]);
+ for (i = 0; i < nr_ioapic_registers[ioapic_id]; i++)
+ ioapic_write_entry(ioapic_id, i, saved_data[i]);
+}
- return 0;
+static void ioapic_resume(void)
+{
+ int ioapic_id;
+
+ for (ioapic_id = nr_ioapics - 1; ioapic_id >= 0; ioapic_id--)
+ resume_ioapic(ioapic_id);
}
-static struct sysdev_class ioapic_sysdev_class = {
- .name = "ioapic",
+static struct syscore_ops ioapic_syscore_ops = {
.suspend = ioapic_suspend,
.resume = ioapic_resume,
};
-static int __init ioapic_init_sysfs(void)
+static int __init ioapic_init_ops(void)
{
- struct sys_device * dev;
- int i, size, error;
+ int i;
- error = sysdev_class_register(&ioapic_sysdev_class);
- if (error)
- return error;
+ for (i = 0; i < nr_ioapics; i++) {
+ unsigned int size;
- for (i = 0; i < nr_ioapics; i++ ) {
- size = sizeof(struct sys_device) + nr_ioapic_registers[i]
+ size = nr_ioapic_registers[i]
* sizeof(struct IO_APIC_route_entry);
- mp_ioapic_data[i] = kzalloc(size, GFP_KERNEL);
- if (!mp_ioapic_data[i]) {
- printk(KERN_ERR "Can't suspend/resume IOAPIC %d\n", i);
- continue;
- }
- dev = &mp_ioapic_data[i]->dev;
- dev->id = i;
- dev->cls = &ioapic_sysdev_class;
- error = sysdev_register(dev);
- if (error) {
- kfree(mp_ioapic_data[i]);
- mp_ioapic_data[i] = NULL;
- printk(KERN_ERR "Can't suspend/resume IOAPIC %d\n", i);
- continue;
- }
+ ioapic_saved_data[i] = kzalloc(size, GFP_KERNEL);
+ if (!ioapic_saved_data[i])
+ pr_err("IOAPIC %d: suspend/resume impossible!\n", i);
}
+ register_syscore_ops(&ioapic_syscore_ops);
+
return 0;
}
-device_initcall(ioapic_init_sysfs);
+device_initcall(ioapic_init_ops);
/*
* Dynamic irq allocate and deallocation
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 3c289281394..33b10a0fc09 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -23,6 +23,8 @@
#include <linux/io.h>
#include <linux/pci.h>
#include <linux/kdebug.h>
+#include <linux/delay.h>
+#include <linux/crash_dump.h>
#include <asm/uv/uv_mmrs.h>
#include <asm/uv/uv_hub.h>
@@ -34,6 +36,7 @@
#include <asm/ipi.h>
#include <asm/smp.h>
#include <asm/x86_init.h>
+#include <asm/emergency-restart.h>
DEFINE_PER_CPU(int, x2apic_extra_bits);
@@ -810,4 +813,11 @@ void __init uv_system_init(void)
/* register Legacy VGA I/O redirection handler */
pci_register_set_vga_state(uv_set_vga_state);
+
+ /*
+ * For a kdump kernel the reset must be BOOT_ACPI, not BOOT_EFI, as
+ * EFI is not enabled in the kdump kernel.
+ */
+ if (is_kdump_kernel())
+ reboot_type = BOOT_ACPI;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-24 21:39:24 +0000