diff options
Diffstat (limited to 'arch/i386')
46 files changed, 232 insertions, 219 deletions
diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig index 64ad10f984a..30944ee2e61 100644 --- a/arch/i386/Kconfig +++ b/arch/i386/Kconfig @@ -858,9 +858,9 @@ config RELOCATABLE bool "Build a relocatable kernel(EXPERIMENTAL)" depends on EXPERIMENTAL help - This build a kernel image that retains relocation information + This builds a kernel image that retains relocation information so it can be loaded someplace besides the default 1MB. - The relocations tend to the kernel binary about 10% larger, + The relocations tend to make the kernel binary about 10% larger, but are discarded at runtime. One use is for the kexec on panic case where the recovery kernel diff --git a/arch/i386/Kconfig.cpu b/arch/i386/Kconfig.cpu index dce6124cb84..d7f6fb0b30f 100644 --- a/arch/i386/Kconfig.cpu +++ b/arch/i386/Kconfig.cpu @@ -108,7 +108,7 @@ config MCORE2 bool "Core 2/newer Xeon" help Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and 53xx) - CPUs. You can distingush newer from older Xeons by the CPU family + CPUs. You can distinguish newer from older Xeons by the CPU family in /proc/cpuinfo. Newer ones have 6. config MPENTIUM4 @@ -172,7 +172,7 @@ config MWINCHIP3D help Select this for an IDT Winchip-2A or 3. Linux and GCC treat this chip as a 586TSC with some extended instructions - and alignment reqirements. Also enable out of order memory + and alignment requirements. Also enable out of order memory stores for this CPU, which can increase performance of some operations. diff --git a/arch/i386/kernel/Makefile b/arch/i386/kernel/Makefile index 4f98516b9f9..91cff8dc9e1 100644 --- a/arch/i386/kernel/Makefile +++ b/arch/i386/kernel/Makefile @@ -34,6 +34,7 @@ obj-y += sysenter.o vsyscall.o obj-$(CONFIG_ACPI_SRAT) += srat.o obj-$(CONFIG_EFI) += efi.o efi_stub.o obj-$(CONFIG_DOUBLEFAULT) += doublefault.o +obj-$(CONFIG_SERIAL_8250) += legacy_serial.o obj-$(CONFIG_VM86) += vm86.o obj-$(CONFIG_EARLY_PRINTK) += early_printk.o obj-$(CONFIG_HPET_TIMER) += hpet.o diff --git a/arch/i386/kernel/apic.c b/arch/i386/kernel/apic.c index aca054cc055..67824f3bb97 100644 --- a/arch/i386/kernel/apic.c +++ b/arch/i386/kernel/apic.c @@ -19,7 +19,6 @@ #include <linux/mm.h> #include <linux/delay.h> #include <linux/bootmem.h> -#include <linux/smp_lock.h> #include <linux/interrupt.h> #include <linux/mc146818rtc.h> #include <linux/kernel_stat.h> diff --git a/arch/i386/kernel/apm.c b/arch/i386/kernel/apm.c index 367ff1d930c..4112afe712b 100644 --- a/arch/i386/kernel/apm.c +++ b/arch/i386/kernel/apm.c @@ -223,7 +223,6 @@ #include <linux/device.h> #include <linux/kernel.h> #include <linux/smp.h> -#include <linux/smp_lock.h> #include <linux/dmi.h> #include <linux/suspend.h> #include <linux/kthread.h> @@ -1173,7 +1172,7 @@ static void reinit_timer(void) unsigned long flags; spin_lock_irqsave(&i8253_lock, flags); - /* set the clock to 100 Hz */ + /* set the clock to HZ */ outb_p(0x34, PIT_MODE); /* binary, mode 2, LSB/MSB, ch 0 */ udelay(10); outb_p(LATCH & 0xff, PIT_CH0); /* LSB */ diff --git a/arch/i386/kernel/cpu/intel_cacheinfo.c b/arch/i386/kernel/cpu/intel_cacheinfo.c index 80b4c5d421b..e5be819492e 100644 --- a/arch/i386/kernel/cpu/intel_cacheinfo.c +++ b/arch/i386/kernel/cpu/intel_cacheinfo.c @@ -733,9 +733,11 @@ static int __cpuinit cacheinfo_cpu_callback(struct notifier_block *nfb, sys_dev = get_cpu_sysdev(cpu); switch (action) { case CPU_ONLINE: + case CPU_ONLINE_FROZEN: cache_add_dev(sys_dev); break; case CPU_DEAD: + case CPU_DEAD_FROZEN: cache_remove_dev(sys_dev); break; } diff --git a/arch/i386/kernel/cpu/mcheck/therm_throt.c b/arch/i386/kernel/cpu/mcheck/therm_throt.c index 065005c3f16..7ba7c3abd3a 100644 --- a/arch/i386/kernel/cpu/mcheck/therm_throt.c +++ b/arch/i386/kernel/cpu/mcheck/therm_throt.c @@ -1,5 +1,5 @@ /* - * linux/arch/i386/kerne/cpu/mcheck/therm_throt.c + * linux/arch/i386/kernel/cpu/mcheck/therm_throt.c * * Thermal throttle event support code (such as syslog messaging and rate * limiting) that was factored out from x86_64 (mce_intel.c) and i386 (p4.c). @@ -137,10 +137,12 @@ static __cpuinit int thermal_throttle_cpu_callback(struct notifier_block *nfb, mutex_lock(&therm_cpu_lock); switch (action) { case CPU_ONLINE: + case CPU_ONLINE_FROZEN: err = thermal_throttle_add_dev(sys_dev); WARN_ON(err); break; case CPU_DEAD: + case CPU_DEAD_FROZEN: thermal_throttle_remove_dev(sys_dev); break; } diff --git a/arch/i386/kernel/cpu/transmeta.c b/arch/i386/kernel/cpu/transmeta.c index 6471a5a1320..200fb3f9ebf 100644 --- a/arch/i386/kernel/cpu/transmeta.c +++ b/arch/i386/kernel/cpu/transmeta.c @@ -77,8 +77,10 @@ static void __cpuinit init_transmeta(struct cpuinfo_x86 *c) set_bit(X86_FEATURE_CONSTANT_TSC, c->x86_capability); /* If we can run i686 user-space code, call us an i686 */ -#define USER686 (X86_FEATURE_TSC|X86_FEATURE_CX8|X86_FEATURE_CMOV) - if ( c->x86 == 5 && (c->x86_capability[0] & USER686) == USER686 ) +#define USER686 ((1 << X86_FEATURE_TSC)|\ + (1 << X86_FEATURE_CX8)|\ + (1 << X86_FEATURE_CMOV)) + if (c->x86 == 5 && (c->x86_capability[0] & USER686) == USER686) c->x86 = 6; #ifdef CONFIG_SYSCTL diff --git a/arch/i386/kernel/cpuid.c b/arch/i386/kernel/cpuid.c index eeae0d99233..5c2faa10e9f 100644 --- a/arch/i386/kernel/cpuid.c +++ b/arch/i386/kernel/cpuid.c @@ -169,9 +169,11 @@ static int cpuid_class_cpu_callback(struct notifier_block *nfb, unsigned long ac switch (action) { case CPU_ONLINE: + case CPU_ONLINE_FROZEN: cpuid_device_create(cpu); break; case CPU_DEAD: + case CPU_DEAD_FROZEN: device_destroy(cpuid_class, MKDEV(CPUID_MAJOR, cpu)); break; } diff --git a/arch/i386/kernel/crash.c b/arch/i386/kernel/crash.c index a5e0e990ea9..53589d1b1a0 100644 --- a/arch/i386/kernel/crash.c +++ b/arch/i386/kernel/crash.c @@ -22,7 +22,7 @@ #include <asm/nmi.h> #include <asm/hw_irq.h> #include <asm/apic.h> -#include <asm/kdebug.h> +#include <linux/kdebug.h> #include <asm/smp.h> #include <mach_ipi.h> diff --git a/arch/i386/kernel/efi.c b/arch/i386/kernel/efi.c index dd9e7faafa7..a1808022ea1 100644 --- a/arch/i386/kernel/efi.c +++ b/arch/i386/kernel/efi.c @@ -347,14 +347,12 @@ void __init efi_init(void) printk(KERN_ERR PFX "Woah! Couldn't map the EFI system table.\n"); if (efi.systab->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE) printk(KERN_ERR PFX "Woah! EFI system table signature incorrect\n"); - if ((efi.systab->hdr.revision ^ EFI_SYSTEM_TABLE_REVISION) >> 16 != 0) - printk(KERN_ERR PFX - "Warning: EFI system table major version mismatch: " - "got %d.%02d, expected %d.%02d\n", + if ((efi.systab->hdr.revision >> 16) == 0) + printk(KERN_ERR PFX "Warning: EFI system table version " + "%d.%02d, expected 1.00 or greater\n", efi.systab->hdr.revision >> 16, - efi.systab->hdr.revision & 0xffff, - EFI_SYSTEM_TABLE_REVISION >> 16, - EFI_SYSTEM_TABLE_REVISION & 0xffff); + efi.systab->hdr.revision & 0xffff); + /* * Grab some details from the system table */ diff --git a/arch/i386/kernel/i8259.c b/arch/i386/kernel/i8259.c index 03abfdb1a6e..0499cbe9871 100644 --- a/arch/i386/kernel/i8259.c +++ b/arch/i386/kernel/i8259.c @@ -5,7 +5,6 @@ #include <linux/interrupt.h> #include <linux/slab.h> #include <linux/random.h> -#include <linux/smp_lock.h> #include <linux/init.h> #include <linux/kernel_stat.h> #include <linux/sysdev.h> diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c index 1b623cda3a6..7f8b7af2b95 100644 --- a/arch/i386/kernel/io_apic.c +++ b/arch/i386/kernel/io_apic.c @@ -25,7 +25,6 @@ #include <linux/init.h> #include <linux/delay.h> #include <linux/sched.h> -#include <linux/smp_lock.h> #include <linux/mc146818rtc.h> #include <linux/compiler.h> #include <linux/acpi.h> diff --git a/arch/i386/kernel/ioport.c b/arch/i386/kernel/ioport.c index d1e42e0dbe6..3d310a946d7 100644 --- a/arch/i386/kernel/ioport.c +++ b/arch/i386/kernel/ioport.c @@ -12,7 +12,6 @@ #include <linux/types.h> #include <linux/ioport.h> #include <linux/smp.h> -#include <linux/smp_lock.h> #include <linux/stddef.h> #include <linux/slab.h> #include <linux/thread_info.h> diff --git a/arch/i386/kernel/kprobes.c b/arch/i386/kernel/kprobes.c index b545bc746fc..dde828a333c 100644 --- a/arch/i386/kernel/kprobes.c +++ b/arch/i386/kernel/kprobes.c @@ -31,8 +31,8 @@ #include <linux/kprobes.h> #include <linux/ptrace.h> #include <linux/preempt.h> +#include <linux/kdebug.h> #include <asm/cacheflush.h> -#include <asm/kdebug.h> #include <asm/desc.h> #include <asm/uaccess.h> @@ -226,24 +226,15 @@ static void __kprobes prepare_singlestep(struct kprobe *p, struct pt_regs *regs) } /* Called with kretprobe_lock held */ -void __kprobes arch_prepare_kretprobe(struct kretprobe *rp, +void __kprobes arch_prepare_kretprobe(struct kretprobe_instance *ri, struct pt_regs *regs) { unsigned long *sara = (unsigned long *)®s->esp; - struct kretprobe_instance *ri; + ri->ret_addr = (kprobe_opcode_t *) *sara; - if ((ri = get_free_rp_inst(rp)) != NULL) { - ri->rp = rp; - ri->task = current; - ri->ret_addr = (kprobe_opcode_t *) *sara; - - /* Replace the return addr with trampoline addr */ - *sara = (unsigned long) &kretprobe_trampoline; - add_rp_inst(ri); - } else { - rp->nmissed++; - } + /* Replace the return addr with trampoline addr */ + *sara = (unsigned long) &kretprobe_trampoline; } /* @@ -449,8 +440,7 @@ fastcall void *__kprobes trampoline_handler(struct pt_regs *regs) break; } - BUG_ON(!orig_ret_address || (orig_ret_address == trampoline_address)); - + kretprobe_assert(ri, orig_ret_address, trampoline_address); spin_unlock_irqrestore(&kretprobe_lock, flags); hlist_for_each_entry_safe(ri, node, tmp, &empty_rp, hlist) { @@ -753,6 +743,11 @@ int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs) return 0; } +int __kprobes arch_trampoline_kprobe(struct kprobe *p) +{ + return 0; +} + int __init arch_init_kprobes(void) { return 0; diff --git a/arch/i386/kernel/ldt.c b/arch/i386/kernel/ldt.c index b410e5fb034..e0b2d17f4f1 100644 --- a/arch/i386/kernel/ldt.c +++ b/arch/i386/kernel/ldt.c @@ -10,7 +10,6 @@ #include <linux/string.h> #include <linux/mm.h> #include <linux/smp.h> -#include <linux/smp_lock.h> #include <linux/vmalloc.h> #include <linux/slab.h> diff --git a/arch/i386/kernel/legacy_serial.c b/arch/i386/kernel/legacy_serial.c new file mode 100644 index 00000000000..21510118544 --- /dev/null +++ b/arch/i386/kernel/legacy_serial.c @@ -0,0 +1,67 @@ +/* + * Legacy COM port devices for x86 platforms without PNPBIOS or ACPI. + * Data taken from include/asm-i386/serial.h. + * + * (c) Copyright 2007 Hewlett-Packard Development Company, L.P. + * Bjorn Helgaas <bjorn.helgaas@hp.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/module.h> +#include <linux/init.h> +#include <linux/pnp.h> +#include <linux/serial_8250.h> + +/* Standard COM flags (except for COM4, because of the 8514 problem) */ +#ifdef CONFIG_SERIAL_DETECT_IRQ +#define COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ) +#define COM4_FLAGS (UPF_BOOT_AUTOCONF | UPF_AUTO_IRQ) +#else +#define COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST) +#define COM4_FLAGS UPF_BOOT_AUTOCONF +#endif + +#define PORT(_base,_irq,_flags) \ + { \ + .iobase = _base, \ + .irq = _irq, \ + .uartclk = 1843200, \ + .iotype = UPIO_PORT, \ + .flags = _flags, \ + } + +static struct plat_serial8250_port x86_com_data[] = { + PORT(0x3F8, 4, COM_FLAGS), + PORT(0x2F8, 3, COM_FLAGS), + PORT(0x3E8, 4, COM_FLAGS), + PORT(0x2E8, 3, COM4_FLAGS), + { }, +}; + +static struct platform_device x86_com_device = { + .name = "serial8250", + .id = PLAT8250_DEV_PLATFORM, + .dev = { + .platform_data = x86_com_data, + }, +}; + +static int force_legacy_probe; +module_param_named(force, force_legacy_probe, bool, 0); +MODULE_PARM_DESC(force, "Force legacy serial port probe"); + +static int __init serial8250_x86_com_init(void) +{ + if (pnp_platform_devices && !force_legacy_probe) + return -ENODEV; + + return platform_device_register(&x86_com_device); +} + +module_init(serial8250_x86_com_init); + +MODULE_AUTHOR("Bjorn Helgaas"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Generic 8250/16x50 legacy probe module"); diff --git a/arch/i386/kernel/microcode.c b/arch/i386/kernel/microcode.c index cbe7ec8dbb9..83f825f2e2d 100644 --- a/arch/i386/kernel/microcode.c +++ b/arch/i386/kernel/microcode.c @@ -567,7 +567,7 @@ static int cpu_request_microcode(int cpu) return error; } -static int apply_microcode_on_cpu(int cpu) +static int apply_microcode_check_cpu(int cpu) { struct cpuinfo_x86 *c = cpu_data + cpu; struct ucode_cpu_info *uci = ucode_cpu_info + cpu; @@ -575,8 +575,9 @@ static int apply_microcode_on_cpu(int cpu) unsigned int val[2]; int err = 0; + /* Check if the microcode is available */ if (!uci->mc) - return -EINVAL; + return 0; old = current->cpus_allowed; set_cpus_allowed(current, cpumask_of_cpu(cpu)); @@ -614,7 +615,7 @@ static int apply_microcode_on_cpu(int cpu) return err; } -static void microcode_init_cpu(int cpu) +static void microcode_init_cpu(int cpu, int resume) { cpumask_t old; struct ucode_cpu_info *uci = ucode_cpu_info + cpu; @@ -624,8 +625,7 @@ static void microcode_init_cpu(int cpu) set_cpus_allowed(current, cpumask_of_cpu(cpu)); mutex_lock(µcode_mutex); collect_cpu_info(cpu); - if (uci->valid && system_state == SYSTEM_RUNNING && - !suspend_cpu_hotplug) + if (uci->valid && system_state == SYSTEM_RUNNING && !resume) cpu_request_microcode(cpu); mutex_unlock(µcode_mutex); set_cpus_allowed(current, old); @@ -702,7 +702,7 @@ static struct attribute_group mc_attr_group = { .name = "microcode", }; -static int mc_sysdev_add(struct sys_device *sys_dev) +static int __mc_sysdev_add(struct sys_device *sys_dev, int resume) { int err, cpu = sys_dev->id; struct ucode_cpu_info *uci = ucode_cpu_info + cpu; @@ -711,39 +711,31 @@ static int mc_sysdev_add(struct sys_device *sys_dev) return 0; pr_debug("Microcode:CPU %d added\n", cpu); - /* If suspend_cpu_hotplug is set, the system is resuming and we should - * use the data from before the suspend. - */ - if (suspend_cpu_hotplug) { - err = apply_microcode_on_cpu(cpu); - if (err) - microcode_fini_cpu(cpu); - } - if (!uci->valid) - memset(uci, 0, sizeof(*uci)); + memset(uci, 0, sizeof(*uci)); err = sysfs_create_group(&sys_dev->kobj, &mc_attr_group); if (err) return err; - if (!uci->valid) - microcode_init_cpu(cpu); + microcode_init_cpu(cpu, resume); return 0; } +static int mc_sysdev_add(struct sys_device *sys_dev) +{ + return __mc_sysdev_add(sys_dev, 0); +} + static int mc_sysdev_remove(struct sys_device *sys_dev) { int cpu = sys_dev->id; if (!cpu_online(cpu)) return 0; + pr_debug("Microcode:CPU %d removed\n", cpu); - /* If suspend_cpu_hotplug is set, the system is suspending and we should - * keep the microcode in memory for the resume. - */ - if (!suspend_cpu_hotplug) - microcode_fini_cpu(cpu); + microcode_fini_cpu(cpu); sysfs_remove_group(&sys_dev->kobj, &mc_attr_group); return 0; } @@ -774,13 +766,34 @@ mc_cpu_callback(struct notifier_block *nb, unsigned long action, void *hcpu) sys_dev = get_cpu_sysdev(cpu); switch (action) { + case CPU_UP_CANCELED_FROZEN: + /* The CPU refused to come up during a system resume */ + microcode_fini_cpu(cpu); + break; case CPU_ONLINE: case CPU_DOWN_FAILED: mc_sysdev_add(sys_dev); break; + case CPU_ONLINE_FROZEN: + /* System-wide resume is in progress, try to apply microcode */ + if (apply_microcode_check_cpu(cpu)) { + /* The application of microcode failed */ + microcode_fini_cpu(cpu); + __mc_sysdev_add(sys_dev, 1); + break; + } + case CPU_DOWN_FAILED_FROZEN: + if (sysfs_create_group(&sys_dev->kobj, &mc_attr_group)) + printk(KERN_ERR "Microcode: Failed to create the sysfs " + "group for CPU%d\n", cpu); + break; case CPU_DOWN_PREPARE: mc_sysdev_remove(sys_dev); break; + case CPU_DOWN_PREPARE_FROZEN: + /* Suspend is in progress, only remove the interface */ + sysfs_remove_group(&sys_dev->kobj, &mc_attr_group); + break; } return NOTIFY_OK; } diff --git a/arch/i386/kernel/mpparse.c b/arch/i386/kernel/mpparse.c index 0952eccd8f2..13abb4ebfb7 100644 --- a/arch/i386/kernel/mpparse.c +++ b/arch/i386/kernel/mpparse.c @@ -18,7 +18,6 @@ #include <linux/acpi.h> #include <linux/delay.h> #include <linux/bootmem.h> -#include <linux/smp_lock.h> #include <linux/kernel_stat.h> #include <linux/mc146818rtc.h> #include <linux/bitops.h> diff --git a/arch/i386/kernel/msr.c b/arch/i386/kernel/msr.c index bcaa6e9b619..0c1069b8d63 100644 --- a/arch/i386/kernel/msr.c +++ b/arch/i386/kernel/msr.c @@ -45,104 +45,6 @@ static struct class *msr_class; -static inline int wrmsr_eio(u32 reg, u32 eax, u32 edx) -{ - int err; - - err = wrmsr_safe(reg, eax, edx); - if (err) - err = -EIO; - return err; -} - -static inline int rdmsr_eio(u32 reg, u32 *eax, u32 *edx) -{ - int err; - - err = rdmsr_safe(reg, eax, edx); - if (err) - err = -EIO; - return err; -} - -#ifdef CONFIG_SMP - -struct msr_command { - int err; - u32 reg; - u32 data[2]; -}; - -static void msr_smp_wrmsr(void *cmd_block) -{ - struct msr_command *cmd = (struct msr_command *)cmd_block; - - cmd->err = wrmsr_eio(cmd->reg, cmd->data[0], cmd->data[1]); -} - -static void msr_smp_rdmsr(void *cmd_block) -{ - struct msr_command *cmd = (struct msr_command *)cmd_block; - - cmd->err = rdmsr_eio(cmd->reg, &cmd->data[0], &cmd->data[1]); -} - -static inline int do_wrmsr(int cpu, u32 reg, u32 eax, u32 edx) -{ - struct msr_command cmd; - int ret; - - preempt_disable(); - if (cpu == smp_processor_id()) { - ret = wrmsr_eio(reg, eax, edx); - } else { - cmd.reg = reg; - cmd.data[0] = eax; - cmd.data[1] = edx; - - smp_call_function_single(cpu, msr_smp_wrmsr, &cmd, 1, 1); - ret = cmd.err; - } - preempt_enable(); - return ret; -} - -static inline int do_rdmsr(int cpu, u32 reg, u32 * eax, u32 * edx) -{ - struct msr_command cmd; - int ret; - - preempt_disable(); - if (cpu == smp_processor_id()) { - ret = rdmsr_eio(reg, eax, edx); - } else { - cmd.reg = reg; - - smp_call_function_single(cpu, msr_smp_rdmsr, &cmd, 1, 1); - - *eax = cmd.data[0]; - *edx = cmd.data[1]; - - ret = cmd.err; - } - preempt_enable(); - return ret; -} - -#else /* ! CONFIG_SMP */ - -static inline int do_wrmsr(int cpu, u32 reg, u32 eax, u32 edx) -{ - return wrmsr_eio(reg, eax, edx); -} - -static inline int do_rdmsr(int cpu, u32 reg, u32 *eax, u32 *edx) -{ - return rdmsr_eio(reg, eax, edx); -} - -#endif /* ! CONFIG_SMP */ - static loff_t msr_seek(struct file *file, loff_t offset, int orig) { loff_t ret = -EINVAL; @@ -174,9 +76,9 @@ static ssize_t msr_read(struct file *file, char __user * buf, return -EINVAL; /* Invalid chunk size */ for (; count; count -= 8) { - err = do_rdmsr(cpu, reg, &data[0], &data[1]); + err = rdmsr_safe_on_cpu(cpu, reg, &data[0], &data[1]); if (err) - return err; + return -EIO; if (copy_to_user(tmp, &data, 8)) return -EFAULT; tmp += 2; @@ -200,9 +102,9 @@ static ssize_t msr_write(struct file *file, const char __user *buf, for (; count; count -= 8) { if (copy_from_user(&data, tmp, 8)) return -EFAULT; - err = do_wrmsr(cpu, reg, data[0], data[1]); + err = wrmsr_safe_on_cpu(cpu, reg, data[0], data[1]); if (err) - return err; + return -EIO; tmp += 2; } @@ -251,9 +153,11 @@ static int msr_class_cpu_callback(struct notifier_block *nfb, switch (action) { case CPU_ONLINE: + case CPU_ONLINE_FROZEN: msr_device_create(cpu); break; case CPU_DEAD: + case CPU_DEAD_FROZEN: device_destroy(msr_class, MKDEV(MSR_MAJOR, cpu)); break; } diff --git a/arch/i386/kernel/nmi.c b/arch/i386/kernel/nmi.c index 33cf2f3c444..fba121f7973 100644 --- a/arch/i386/kernel/nmi.c +++ b/arch/i386/kernel/nmi.c @@ -23,10 +23,10 @@ #include <linux/kprobes.h> #include <linux/cpumask.h> #include <linux/kernel_stat.h> +#include <linux/kdebug.h> #include <asm/smp.h> #include <asm/nmi.h> -#include <asm/kdebug.h> #include "mach_traps.h" diff --git a/arch/i386/kernel/pci-dma.c b/arch/i386/kernel/pci-dma.c index 3ebcea03362..30b754f7cbe 100644 --- a/arch/i386/kernel/pci-dma.c +++ b/arch/i386/kernel/pci-dma.c @@ -77,7 +77,7 @@ int dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr, { void __iomem *mem_base = NULL; int pages = size >> PAGE_SHIFT; - int bitmap_size = (pages + 31)/32; + int bitmap_size = BITS_TO_LONGS(pages) * sizeof(long); if ((flags & (DMA_MEMORY_MAP | DMA_MEMORY_IO)) == 0) goto out; diff --git a/arch/i386/kernel/process.c b/arch/i386/kernel/process.c index 61999479b7a..d76d9bc33b3 100644 --- a/arch/i386/kernel/process.c +++ b/arch/i386/kernel/process.c @@ -21,7 +21,6 @@ #include <linux/mm.h> #include <linux/elfcore.h> #include <linux/smp.h> -#include <linux/smp_lock.h> #include <linux/stddef.h> #include <linux/slab.h> #include <linux/vmalloc.h> diff --git a/arch/i386/kernel/ptrace.c b/arch/i386/kernel/ptrace.c index 4a8f8a25972..0c0ceec5de0 100644 --- a/arch/i386/kernel/ptrace.c +++ b/arch/i386/kernel/ptrace.c @@ -9,7 +9,6 @@ #include <linux/sched.h> #include <linux/mm.h> #include <linux/smp.h> -#include <linux/smp_lock.h> #include <linux/errno.h> #include <linux/ptrace.h> #include <linux/user.h> diff --git a/arch/i386/kernel/signal.c b/arch/i386/kernel/signal.c index 4f99e870c98..d574e38f0f7 100644 --- a/arch/i386/kernel/signal.c +++ b/arch/i386/kernel/signal.c @@ -10,7 +10,6 @@ #include <linux/sched.h> #include <linux/mm.h> #include <linux/smp.h> -#include <linux/smp_lock.h> #include <linux/kernel.h> #include <linux/signal.h> #include <linux/errno.h> diff --git a/arch/i386/kernel/smp.c b/arch/i386/kernel/smp.c index 89a45a9ddcd..93f202a855f 100644 --- a/arch/i386/kernel/smp.c +++ b/arch/i386/kernel/smp.c @@ -13,7 +13,6 @@ #include <linux/mm.h> #include <linux/delay.h> #include <linux/spinlock.h> -#include <linux/smp_lock.h> #include <linux/kernel_stat.h> #include <linux/mc146818rtc.h> #include <linux/cache.h> diff --git a/arch/i386/kernel/smpboot.c b/arch/i386/kernel/smpboot.c index a4b7ad283f4..b92cc4e8b3b 100644 --- a/arch/i386/kernel/smpboot.c +++ b/arch/i386/kernel/smpboot.c @@ -40,7 +40,6 @@ #include <linux/mm.h> #include <linux/sched.h> #include <linux/kernel_stat.h> -#include <linux/smp_lock.h> #include <linux/bootmem.h> #include <linux/notifier.h> #include <linux/cpu.h> diff --git a/arch/i386/kernel/sys_i386.c b/arch/i386/kernel/sys_i386.c index 4048397f174..e5dcb937901 100644 --- a/arch/i386/kernel/sys_i386.c +++ b/arch/i386/kernel/sys_i386.c @@ -10,7 +10,6 @@ #include <linux/sched.h> #include <linux/mm.h> #include <linux/smp.h> -#include <linux/smp_lock.h> #include <linux/sem.h> #include <linux/msg.h> #include <linux/shm.h> diff --git a/arch/i386/kernel/syscall_table.S b/arch/i386/kernel/syscall_table.S index 2697e9210e9..0772678ceec 100644 --- a/arch/i386/kernel/syscall_table.S +++ b/arch/i386/kernel/syscall_table.S @@ -319,3 +319,4 @@ ENTRY(sys_call_table) .long sys_move_pages .long sys_getcpu .long sys_epoll_pwait + .long sys_utimensat /* 320 */ diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c index f21b41e7770..c05e7e861b2 100644 --- a/arch/i386/kernel/traps.c +++ b/arch/i386/kernel/traps.c @@ -52,7 +52,7 @@ #include <asm/unwind.h> #include <asm/smp.h> #include <asm/arch_hooks.h> -#include <asm/kdebug.h> +#include <linux/kdebug.h> #include <asm/stacktrace.h> #include <linux/module.h> @@ -95,20 +95,6 @@ asmlinkage void machine_check(void); int kstack_depth_to_print = 24; static unsigned int code_bytes = 64; -ATOMIC_NOTIFIER_HEAD(i386die_chain); - -int register_die_notifier(struct notifier_block *nb) -{ - vmalloc_sync_all(); - return atomic_notifier_chain_register(&i386die_chain, nb); -} -EXPORT_SYMBOL(register_die_notifier); /* used modular by kdb */ - -int unregister_die_notifier(struct notifier_block *nb) -{ - return atomic_notifier_chain_unregister(&i386die_chain, nb); -} -EXPORT_SYMBOL(unregister_die_notifier); /* used modular by kdb */ static inline int valid_stack_ptr(struct thread_info *tinfo, void *p) { @@ -319,7 +305,7 @@ void show_registers(struct pt_regs *regs) regs->xds & 0xffff, regs->xes & 0xffff, regs->xfs & 0xffff, gs, ss); printk(KERN_EMERG "Process %.*s (pid: %d, ti=%p task=%p task.ti=%p)", TASK_COMM_LEN, current->comm, current->pid, - current_thread_info(), current, current->thread_info); + current_thread_info(), current, task_thread_info(current)); /* * When in-kernel, we also print out the stack and code at the * time of the fault.. @@ -747,6 +733,11 @@ static __kprobes void default_do_nmi(struct pt_regs * regs) */ if (nmi_watchdog_tick(regs, reason)) return; +#endif + if (notify_die(DIE_NMI_POST, "nmi_post", regs, reason, 2, 0) + == NOTIFY_STOP) + return; +#ifdef CONFIG_X86_LOCAL_APIC if (!do_nmi_callback(regs, smp_processor_id())) #endif unknown_nmi_error(reason, regs); diff --git a/arch/i386/kernel/vm86.c b/arch/i386/kernel/vm86.c index d1b8f2b7aea..f2dcd1d27c0 100644 --- a/arch/i386/kernel/vm86.c +++ b/arch/i386/kernel/vm86.c @@ -39,7 +39,6 @@ #include <linux/string.h> #include <linux/mm.h> #include <linux/smp.h> -#include <linux/smp_lock.h> #include <linux/highmem.h> #include <linux/ptrace.h> #include <linux/audit.h> diff --git a/arch/i386/lib/msr-on-cpu.c b/arch/i386/lib/msr-on-cpu.c index 1c46bda409f..7767962f25d 100644 --- a/arch/i386/lib/msr-on-cpu.c +++ b/arch/i386/lib/msr-on-cpu.c @@ -6,6 +6,7 @@ struct msr_info { u32 msr_no; u32 l, h; + int err; }; static void __rdmsr_on_cpu(void *info) @@ -15,20 +16,38 @@ static void __rdmsr_on_cpu(void *info) rdmsr(rv->msr_no, rv->l, rv->h); } -void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h) +static void __rdmsr_safe_on_cpu(void *info) { + struct msr_info *rv = info; + + rv->err = rdmsr_safe(rv->msr_no, &rv->l, &rv->h); +} + +static int _rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h, int safe) +{ + int err = 0; preempt_disable(); if (smp_processor_id() == cpu) - rdmsr(msr_no, *l, *h); + if (safe) + err = rdmsr_safe(msr_no, l, h); + else + rdmsr(msr_no, *l, *h); else { struct msr_info rv; rv.msr_no = msr_no; - smp_call_function_single(cpu, __rdmsr_on_cpu, &rv, 0, 1); + if (safe) { + smp_call_function_single(cpu, __rdmsr_safe_on_cpu, + &rv, 0, 1); + err = rv.err; + } else { + smp_call_function_single(cpu, __rdmsr_on_cpu, &rv, 0, 1); + } *l = rv.l; *h = rv.h; } preempt_enable(); + return err; } static void __wrmsr_on_cpu(void *info) @@ -38,21 +57,63 @@ static void __wrmsr_on_cpu(void *info) wrmsr(rv->msr_no, rv->l, rv->h); } -void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h) +static void __wrmsr_safe_on_cpu(void *info) { + struct msr_info *rv = info; + + rv->err = wrmsr_safe(rv->msr_no, rv->l, rv->h); +} + +static int _wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h, int safe) +{ + int err = 0; preempt_disable(); if (smp_processor_id() == cpu) - wrmsr(msr_no, l, h); + if (safe) + err = wrmsr_safe(msr_no, l, h); + else + wrmsr(msr_no, l, h); else { struct msr_info rv; rv.msr_no = msr_no; rv.l = l; rv.h = h; - smp_call_function_single(cpu, __wrmsr_on_cpu, &rv, 0, 1); + if (safe) { + smp_call_function_single(cpu, __wrmsr_safe_on_cpu, + &rv, 0, 1); + err = rv.err; + } else { + smp_call_function_single(cpu, __wrmsr_on_cpu, &rv, 0, 1); + } } preempt_enable(); + return err; +} + +void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h) +{ + _wrmsr_on_cpu(cpu, msr_no, l, h, 0); +} + +void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h) +{ + _rdmsr_on_cpu(cpu, msr_no, l, h, 0); +} + +/* These "safe" variants are slower and should be used when the target MSR + may not actually exist. */ +int wrmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h) +{ + return _wrmsr_on_cpu(cpu, msr_no, l, h, 1); +} + +int rdmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h) +{ + return _rdmsr_on_cpu(cpu, msr_no, l, h, 1); } EXPORT_SYMBOL(rdmsr_on_cpu); EXPORT_SYMBOL(wrmsr_on_cpu); +EXPORT_SYMBOL(rdmsr_safe_on_cpu); +EXPORT_SYMBOL(wrmsr_safe_on_cpu); diff --git a/arch/i386/mach-default/setup.c b/arch/i386/mach-default/setup.c index c7881621070..7f635c7a238 100644 --- a/arch/i386/mach-default/setup.c +++ b/arch/i386/mach-default/setup.c @@ -81,7 +81,7 @@ void __init trap_init_hook(void) static struct irqaction irq0 = { .handler = timer_interrupt, - .flags = IRQF_DISABLED | IRQF_NOBALANCING, + .flags = IRQF_DISABLED | IRQF_NOBALANCING | IRQF_IRQPOLL, .mask = CPU_MASK_NONE, .name = "timer" }; diff --git a/arch/i386/mach-generic/probe.c b/arch/i386/mach-generic/probe.c index a7b3999bb37..74f3da63442 100644 --- a/arch/i386/mach-generic/probe.c +++ b/arch/i386/mach-generic/probe.c @@ -119,9 +119,7 @@ int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id) return 0; } -#ifdef CONFIG_SMP int hard_smp_processor_id(void) { return genapic->get_apic_id(*(unsigned long *)(APIC_BASE+APIC_ID)); } -#endif diff --git a/arch/i386/mach-visws/setup.c b/arch/i386/mach-visws/setup.c index 233ee20907b..1f81f10e03a 100644 --- a/arch/i386/mach-visws/setup.c +++ b/arch/i386/mach-visws/setup.c @@ -116,7 +116,7 @@ void __init pre_setup_arch_hook() static struct irqaction irq0 = { .handler = timer_interrupt, - .flags = IRQF_DISABLED, + .flags = IRQF_DISABLED | IRQF_IRQPOLL, .name = "timer", }; diff --git a/arch/i386/mach-visws/visws_apic.c b/arch/i386/mach-visws/visws_apic.c index 38c2b13124d..710faf71a65 100644 --- a/arch/i386/mach-visws/visws_apic.c +++ b/arch/i386/mach-visws/visws_apic.c @@ -18,7 +18,6 @@ #include <linux/kernel_stat.h> #include <linux/interrupt.h> -#include <linux/smp_lock.h> #include <linux/init.h> #include <asm/io.h> diff --git a/arch/i386/mach-voyager/setup.c b/arch/i386/mach-voyager/setup.c index 447bb105cf5..2b55694e640 100644 --- a/arch/i386/mach-voyager/setup.c +++ b/arch/i386/mach-voyager/setup.c @@ -42,7 +42,7 @@ void __init trap_init_hook(void) static struct irqaction irq0 = { .handler = timer_interrupt, - .flags = IRQF_DISABLED | IRQF_NOBALANCING, + .flags = IRQF_DISABLED | IRQF_NOBALANCING | IRQF_IRQPOLL, .mask = CPU_MASK_NONE, .name = "timer" }; diff --git a/arch/i386/mach-voyager/voyager_basic.c b/arch/i386/mach-voyager/voyager_basic.c index 8fe7e4593d5..9b77b39b71a 100644 --- a/arch/i386/mach-voyager/voyager_basic.c +++ b/arch/i386/mach-voyager/voyager_basic.c @@ -292,8 +292,8 @@ machine_emergency_restart(void) void mca_nmi_hook(void) { - __u8 dumpval __attribute__((unused)) = inb(0xf823); - __u8 swnmi __attribute__((unused)) = inb(0xf813); + __u8 dumpval __maybe_unused = inb(0xf823); + __u8 swnmi __maybe_unused = inb(0xf813); /* FIXME: assume dump switch pressed */ /* check to see if the dump switch was pressed */ diff --git a/arch/i386/mach-voyager/voyager_smp.c b/arch/i386/mach-voyager/voyager_smp.c index 1a5e448a29c..50d9c52070b 100644 --- a/arch/i386/mach-voyager/voyager_smp.c +++ b/arch/i386/mach-voyager/voyager_smp.c @@ -16,7 +16,6 @@ #include <linux/mc146818rtc.h> #include <linux/cache.h> #include <linux/interrupt.h> -#include <linux/smp_lock.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/bootmem.h> diff --git a/arch/i386/mach-voyager/voyager_thread.c b/arch/i386/mach-voyager/voyager_thread.c index fdc1d926fb2..b4b24e0e45e 100644 --- a/arch/i386/mach-voyager/voyager_thread.c +++ b/arch/i386/mach-voyager/voyager_thread.c @@ -18,7 +18,6 @@ #include <linux/kernel_stat.h> #include <linux/delay.h> #include <linux/mc146818rtc.h> -#include <linux/smp_lock.h> #include <linux/init.h> #include <linux/bootmem.h> #include <linux/kmod.h> diff --git a/arch/i386/mm/fault.c b/arch/i386/mm/fault.c index f534c29e80b..29d7d61543a 100644 --- a/arch/i386/mm/fault.c +++ b/arch/i386/mm/fault.c @@ -14,20 +14,20 @@ #include <linux/mman.h> #include <linux/mm.h> #include <linux/smp.h> -#include <linux/smp_lock.h> #include <linux/interrupt.h> #include <linux/init.h> #include <linux/tty.h> #include <linux/vt_kern.h> /* For unblank_screen() */ #include <linux/highmem.h> #include <linux/bootmem.h> /* for max_low_pfn */ +#include <linux/vmalloc.h> #include <linux/module.h> #include <linux/kprobes.h> #include <linux/uaccess.h> +#include <linux/kdebug.h> #include <asm/system.h> #include <asm/desc.h> -#include <asm/kdebug.h> #include <asm/segment.h> extern void die(const char *,struct pt_regs *,long); diff --git a/arch/i386/mm/hugetlbpage.c b/arch/i386/mm/hugetlbpage.c index 6272a4fd9e7..efdf95ac803 100644 --- a/arch/i386/mm/hugetlbpage.c +++ b/arch/i386/mm/hugetlbpage.c @@ -9,7 +9,6 @@ #include <linux/mm.h> #include <linux/hugetlb.h> #include <linux/pagemap.h> -#include <linux/smp_lock.h> #include <linux/slab.h> #include <linux/err.h> #include <linux/sysctl.h> diff --git a/arch/i386/mm/init.c b/arch/i386/mm/init.c index 1a7197e89eb..c50782efa5c 100644 --- a/arch/i386/mm/init.c +++ b/arch/i386/mm/init.c @@ -751,12 +751,9 @@ void __init pgtable_cache_init(void) pmd_cache = kmem_cache_create("pmd", PTRS_PER_PMD*sizeof(pmd_t), PTRS_PER_PMD*sizeof(pmd_t), - 0, + SLAB_PANIC, pmd_ctor, NULL); - if (!pmd_cache) - panic("pgtable_cache_init(): cannot create pmd cache"); - if (!SHARED_KERNEL_PMD) { /* If we're in PAE mode and have a non-shared kernel pmd, then the pgd size must be a @@ -770,11 +767,9 @@ void __init pgtable_cache_init(void) pgd_cache = kmem_cache_create("pgd", pgd_size, pgd_size, - 0, + SLAB_PANIC, pgd_ctor, (!SHARED_KERNEL_PMD) ? pgd_dtor : NULL); - if (!pgd_cache) - panic("pgtable_cache_init(): Cannot create pgd cache"); } /* diff --git a/arch/i386/oprofile/nmi_int.c b/arch/i386/oprofile/nmi_int.c index 695f737516a..8e185208dfd 100644 --- a/arch/i386/oprofile/nmi_int.c +++ b/arch/i386/oprofile/nmi_int.c @@ -14,10 +14,10 @@ #include <linux/sysdev.h> #include <linux/slab.h> #include <linux/moduleparam.h> +#include <linux/kdebug.h> #include <asm/nmi.h> #include <asm/msr.h> #include <asm/apic.h> -#include <asm/kdebug.h> #include "op_counter.h" #include "op_x86_model.h" diff --git a/arch/i386/oprofile/nmi_timer_int.c b/arch/i386/oprofile/nmi_timer_int.c index abf0ba52a63..1418e36ae7a 100644 --- a/arch/i386/oprofile/nmi_timer_int.c +++ b/arch/i386/oprofile/nmi_timer_int.c @@ -12,12 +12,11 @@ #include <linux/errno.h> #include <linux/oprofile.h> #include <linux/rcupdate.h> - +#include <linux/kdebug.h> #include <asm/nmi.h> #include <asm/apic.h> #include <asm/ptrace.h> -#include <asm/kdebug.h> static int profile_timer_exceptions_notify(struct notifier_block *self, unsigned long val, void *data) diff --git a/arch/i386/pci/init.c b/arch/i386/pci/init.c index 1cf11af96de..3de9f9ba2da 100644 --- a/arch/i386/pci/init.c +++ b/arch/i386/pci/init.c @@ -6,7 +6,7 @@ in the right sequence from here. */ static __init int pci_access_init(void) { - int type __attribute__((unused)) = 0; + int type __maybe_unused = 0; #ifdef CONFIG_PCI_DIRECT type = pci_direct_probe(); |