diff options
Diffstat (limited to 'arch')
34 files changed, 87 insertions, 79 deletions
diff --git a/arch/Kconfig b/arch/Kconfig index d6a68656950e..aff2746c8af2 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -426,20 +426,14 @@ config HAVE_HARDLOCKUP_DETECTOR_PERF The arch chooses to use the generic perf-NMI-based hardlockup detector. Must define HAVE_PERF_EVENTS_NMI. -config HAVE_NMI_WATCHDOG - depends on HAVE_NMI - bool - help - The arch provides a low level NMI watchdog. It provides - asm/nmi.h, and defines its own arch_touch_nmi_watchdog(). - config HAVE_HARDLOCKUP_DETECTOR_ARCH bool - select HAVE_NMI_WATCHDOG help - The arch chooses to provide its own hardlockup detector, which is - a superset of the HAVE_NMI_WATCHDOG. It also conforms to config - interfaces and parameters provided by hardlockup detector subsystem. + The arch provides its own hardlockup detector implementation instead + of the generic ones. + + It uses the same command line parameters, and sysctl interface, + as the generic hardlockup detectors. config HAVE_PERF_REGS bool diff --git a/arch/arm/include/asm/irq.h b/arch/arm/include/asm/irq.h index a7c2337b0c7d..18605f1b3580 100644 --- a/arch/arm/include/asm/irq.h +++ b/arch/arm/include/asm/irq.h @@ -27,7 +27,6 @@ struct irqaction; struct pt_regs; void handle_IRQ(unsigned int, struct pt_regs *); -void init_IRQ(void); #ifdef CONFIG_SMP #include <linux/cpumask.h> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index d91829189dd4..3ae5c03ded0e 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -204,6 +204,8 @@ config ARM64 select HAVE_FUNCTION_ERROR_INJECTION select HAVE_FUNCTION_GRAPH_TRACER select HAVE_GCC_PLUGINS + select HAVE_HARDLOCKUP_DETECTOR_PERF if PERF_EVENTS && \ + HW_PERF_EVENTS && HAVE_PERF_EVENTS_NMI select HAVE_HW_BREAKPOINT if PERF_EVENTS select HAVE_IOREMAP_PROT select HAVE_IRQ_TIME_ACCOUNTING @@ -211,6 +213,7 @@ config ARM64 select HAVE_MOD_ARCH_SPECIFIC select HAVE_NMI select HAVE_PERF_EVENTS + select HAVE_PERF_EVENTS_NMI if ARM64_PSEUDO_NMI select HAVE_PERF_REGS select HAVE_PERF_USER_STACK_DUMP select HAVE_PREEMPT_DYNAMIC_KEY diff --git a/arch/arm64/include/asm/thread_info.h b/arch/arm64/include/asm/thread_info.h index 848739c15de8..553d1bc559c6 100644 --- a/arch/arm64/include/asm/thread_info.h +++ b/arch/arm64/include/asm/thread_info.h @@ -55,10 +55,6 @@ struct thread_info { void arch_setup_new_exec(void); #define arch_setup_new_exec arch_setup_new_exec -void arch_release_task_struct(struct task_struct *tsk); -int arch_dup_task_struct(struct task_struct *dst, - struct task_struct *src); - #endif #define TIF_SIGPENDING 0 /* signal pending */ diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile index 3864a64e2b2b..d95b3d6b471a 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -44,6 +44,7 @@ obj-$(CONFIG_KUSER_HELPERS) += kuser32.o obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o entry-ftrace.o obj-$(CONFIG_MODULES) += module.o module-plts.o obj-$(CONFIG_PERF_EVENTS) += perf_regs.o perf_callchain.o +obj-$(CONFIG_HARDLOCKUP_DETECTOR_PERF) += watchdog_hld.o obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o obj-$(CONFIG_CPU_PM) += sleep.o suspend.o obj-$(CONFIG_CPU_IDLE) += cpuidle.o diff --git a/arch/arm64/kernel/watchdog_hld.c b/arch/arm64/kernel/watchdog_hld.c new file mode 100644 index 000000000000..dcd25322127c --- /dev/null +++ b/arch/arm64/kernel/watchdog_hld.c @@ -0,0 +1,36 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/nmi.h> +#include <linux/cpufreq.h> +#include <linux/perf/arm_pmu.h> + +/* + * Safe maximum CPU frequency in case a particular platform doesn't implement + * cpufreq driver. Although, architecture doesn't put any restrictions on + * maximum frequency but 5 GHz seems to be safe maximum given the available + * Arm CPUs in the market which are clocked much less than 5 GHz. On the other + * hand, we can't make it much higher as it would lead to a large hard-lockup + * detection timeout on parts which are running slower (eg. 1GHz on + * Developerbox) and doesn't possess a cpufreq driver. + */ +#define SAFE_MAX_CPU_FREQ 5000000000UL // 5 GHz +u64 hw_nmi_get_sample_period(int watchdog_thresh) +{ + unsigned int cpu = smp_processor_id(); + unsigned long max_cpu_freq; + + max_cpu_freq = cpufreq_get_hw_max_freq(cpu) * 1000UL; + if (!max_cpu_freq) + max_cpu_freq = SAFE_MAX_CPU_FREQ; + + return (u64)max_cpu_freq * watchdog_thresh; +} + +bool __init arch_perf_nmi_is_available(void) +{ + /* + * hardlockup_detector_perf_init() will success even if Pseudo-NMI turns off, + * however, the pmu interrupts will act like a normal interrupt instead of + * NMI and the hardlockup detector would be broken. + */ + return arm_pmu_irq_is_nmi(); +} diff --git a/arch/microblaze/include/asm/setup.h b/arch/microblaze/include/asm/setup.h index a06cc1f97aa9..3657f5e78a3d 100644 --- a/arch/microblaze/include/asm/setup.h +++ b/arch/microblaze/include/asm/setup.h @@ -16,8 +16,6 @@ extern char *klimit; extern void mmu_reset(void); -void time_init(void); -void init_IRQ(void); void machine_early_init(const char *cmdline, unsigned int ram, unsigned int fdt, unsigned int msr, unsigned int tlb0, unsigned int tlb1); diff --git a/arch/mips/include/asm/fw/cfe/cfe_api.h b/arch/mips/include/asm/fw/cfe/cfe_api.h index 25df2f4deb31..b52a6a9c26f1 100644 --- a/arch/mips/include/asm/fw/cfe/cfe_api.h +++ b/arch/mips/include/asm/fw/cfe/cfe_api.h @@ -17,9 +17,6 @@ #include <linux/types.h> #include <linux/string.h> -typedef long intptr_t; - - /* * Constants */ diff --git a/arch/mips/include/asm/irq.h b/arch/mips/include/asm/irq.h index 44f9824c1d8c..75abfa834ab7 100644 --- a/arch/mips/include/asm/irq.h +++ b/arch/mips/include/asm/irq.h @@ -19,7 +19,6 @@ #define IRQ_STACK_SIZE THREAD_SIZE #define IRQ_STACK_START (IRQ_STACK_SIZE - 16) -extern void __init init_IRQ(void); extern void *irq_stack[NR_CPUS]; /* diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c index 6b6eaa485946..d0eb1bd19a13 100644 --- a/arch/parisc/kernel/smp.c +++ b/arch/parisc/kernel/smp.c @@ -271,7 +271,6 @@ void arch_send_call_function_single_ipi(int cpu) static void smp_cpu_init(int cpunum) { - extern void init_IRQ(void); /* arch/parisc/kernel/irq.c */ extern void start_cpu_itimer(void); /* arch/parisc/kernel/time.c */ /* Set modes and Enable floating point coprocessor */ diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index bff5820b7cda..8eb6c5e9e4f8 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -90,8 +90,7 @@ config NMI_IPI config PPC_WATCHDOG bool - depends on HARDLOCKUP_DETECTOR - depends on HAVE_HARDLOCKUP_DETECTOR_ARCH + depends on HARDLOCKUP_DETECTOR_ARCH default y help This is a placeholder when the powerpc hardlockup detector @@ -240,7 +239,7 @@ config PPC select HAVE_GCC_PLUGINS if GCC_VERSION >= 50200 # plugin support on gcc <= 5.1 is buggy on PPC select HAVE_GENERIC_VDSO select HAVE_HARDLOCKUP_DETECTOR_ARCH if PPC_BOOK3S_64 && SMP - select HAVE_HARDLOCKUP_DETECTOR_PERF if PERF_EVENTS && HAVE_PERF_EVENTS_NMI && !HAVE_HARDLOCKUP_DETECTOR_ARCH + select HAVE_HARDLOCKUP_DETECTOR_PERF if PERF_EVENTS && HAVE_PERF_EVENTS_NMI select HAVE_HW_BREAKPOINT if PERF_EVENTS && (PPC_BOOK3S || PPC_8xx) select HAVE_IOREMAP_PROT select HAVE_IRQ_TIME_ACCOUNTING diff --git a/arch/powerpc/include/asm/irq.h b/arch/powerpc/include/asm/irq.h index deadd2149426..f257cacb49a9 100644 --- a/arch/powerpc/include/asm/irq.h +++ b/arch/powerpc/include/asm/irq.h @@ -50,9 +50,14 @@ extern void *hardirq_ctx[NR_CPUS]; extern void *softirq_ctx[NR_CPUS]; void __do_IRQ(struct pt_regs *regs); -extern void __init init_IRQ(void); int irq_choose_cpu(const struct cpumask *mask); +#if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_NMI_IPI) +extern void arch_trigger_cpumask_backtrace(const cpumask_t *mask, + bool exclude_self); +#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace +#endif + #endif /* _ASM_IRQ_H */ #endif /* __KERNEL__ */ diff --git a/arch/powerpc/include/asm/nmi.h b/arch/powerpc/include/asm/nmi.h index c3c7adef74de..49a75340c3e0 100644 --- a/arch/powerpc/include/asm/nmi.h +++ b/arch/powerpc/include/asm/nmi.h @@ -3,18 +3,10 @@ #define _ASM_NMI_H #ifdef CONFIG_PPC_WATCHDOG -extern void arch_touch_nmi_watchdog(void); long soft_nmi_interrupt(struct pt_regs *regs); -void watchdog_nmi_set_timeout_pct(u64 pct); +void watchdog_hardlockup_set_timeout_pct(u64 pct); #else -static inline void arch_touch_nmi_watchdog(void) {} -static inline void watchdog_nmi_set_timeout_pct(u64 pct) {} -#endif - -#ifdef CONFIG_NMI_IPI -extern void arch_trigger_cpumask_backtrace(const cpumask_t *mask, - bool exclude_self); -#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace +static inline void watchdog_hardlockup_set_timeout_pct(u64 pct) {} #endif extern void hv_nmi_check_nonrecoverable(struct pt_regs *regs); diff --git a/arch/powerpc/kernel/watchdog.c b/arch/powerpc/kernel/watchdog.c index dbcc4a793f0b..edb2dd1f53eb 100644 --- a/arch/powerpc/kernel/watchdog.c +++ b/arch/powerpc/kernel/watchdog.c @@ -438,7 +438,7 @@ static enum hrtimer_restart watchdog_timer_fn(struct hrtimer *hrtimer) { int cpu = smp_processor_id(); - if (!(watchdog_enabled & NMI_WATCHDOG_ENABLED)) + if (!(watchdog_enabled & WATCHDOG_HARDLOCKUP_ENABLED)) return HRTIMER_NORESTART; if (!cpumask_test_cpu(cpu, &watchdog_cpumask)) @@ -479,7 +479,7 @@ static void start_watchdog(void *arg) return; } - if (!(watchdog_enabled & NMI_WATCHDOG_ENABLED)) + if (!(watchdog_enabled & WATCHDOG_HARDLOCKUP_ENABLED)) return; if (!cpumask_test_cpu(cpu, &watchdog_cpumask)) @@ -546,7 +546,7 @@ static void watchdog_calc_timeouts(void) wd_timer_period_ms = watchdog_thresh * 1000 * 2 / 5; } -void watchdog_nmi_stop(void) +void watchdog_hardlockup_stop(void) { int cpu; @@ -554,7 +554,7 @@ void watchdog_nmi_stop(void) stop_watchdog_on_cpu(cpu); } -void watchdog_nmi_start(void) +void watchdog_hardlockup_start(void) { int cpu; @@ -566,7 +566,7 @@ void watchdog_nmi_start(void) /* * Invoked from core watchdog init. */ -int __init watchdog_nmi_probe(void) +int __init watchdog_hardlockup_probe(void) { int err; @@ -582,7 +582,7 @@ int __init watchdog_nmi_probe(void) } #ifdef CONFIG_PPC_PSERIES -void watchdog_nmi_set_timeout_pct(u64 pct) +void watchdog_hardlockup_set_timeout_pct(u64 pct) { pr_info("Set the NMI watchdog timeout factor to %llu%%\n", pct); WRITE_ONCE(wd_timeout_pct, pct); diff --git a/arch/powerpc/platforms/pseries/mobility.c b/arch/powerpc/platforms/pseries/mobility.c index 6f30113b5468..cd632ba9ebff 100644 --- a/arch/powerpc/platforms/pseries/mobility.c +++ b/arch/powerpc/platforms/pseries/mobility.c @@ -750,7 +750,7 @@ static int pseries_migrate_partition(u64 handle) goto out; if (factor) - watchdog_nmi_set_timeout_pct(factor); + watchdog_hardlockup_set_timeout_pct(factor); ret = pseries_suspend(handle); if (ret == 0) { @@ -766,7 +766,7 @@ static int pseries_migrate_partition(u64 handle) pseries_cancel_migration(handle, ret); if (factor) - watchdog_nmi_set_timeout_pct(0); + watchdog_hardlockup_set_timeout_pct(0); out: vas_migration_handler(VAS_RESUME); diff --git a/arch/riscv/include/asm/irq.h b/arch/riscv/include/asm/irq.h index 43b9ebfbd943..8e10a94430a2 100644 --- a/arch/riscv/include/asm/irq.h +++ b/arch/riscv/include/asm/irq.h @@ -16,6 +16,4 @@ void riscv_set_intc_hwnode_fn(struct fwnode_handle *(*fn)(void)); struct fwnode_handle *riscv_get_intc_hwnode(void); -extern void __init init_IRQ(void); - #endif /* _ASM_RISCV_IRQ_H */ diff --git a/arch/riscv/include/asm/timex.h b/arch/riscv/include/asm/timex.h index d6a7428f6248..a06697846e69 100644 --- a/arch/riscv/include/asm/timex.h +++ b/arch/riscv/include/asm/timex.h @@ -88,6 +88,4 @@ static inline int read_current_timer(unsigned long *timer_val) return 0; } -extern void time_init(void); - #endif /* _ASM_RISCV_TIMEX_H */ diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h index c7c97921ed8d..a674c7d25da5 100644 --- a/arch/s390/include/asm/thread_info.h +++ b/arch/s390/include/asm/thread_info.h @@ -52,9 +52,6 @@ struct thread_info { struct task_struct; -void arch_release_task_struct(struct task_struct *tsk); -int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src); - void arch_setup_new_exec(void); #define arch_setup_new_exec arch_setup_new_exec diff --git a/arch/s390/kernel/entry.h b/arch/s390/kernel/entry.h index 34674e38826b..9f41853f36b9 100644 --- a/arch/s390/kernel/entry.h +++ b/arch/s390/kernel/entry.h @@ -34,14 +34,12 @@ void kernel_stack_overflow(struct pt_regs * regs); void handle_signal32(struct ksignal *ksig, sigset_t *oldset, struct pt_regs *regs); -void __init init_IRQ(void); void do_io_irq(struct pt_regs *regs); void do_ext_irq(struct pt_regs *regs); void do_restart(void *arg); void __init startup_init(void); void die(struct pt_regs *regs, const char *str); int setup_profiling_timer(unsigned int multiplier); -void __init time_init(void); unsigned long prepare_ftrace_return(unsigned long parent, unsigned long sp, unsigned long ip); struct s390_mmap_arg_struct; diff --git a/arch/sh/include/asm/irq.h b/arch/sh/include/asm/irq.h index 1c4923502fd4..0f384b1f45ca 100644 --- a/arch/sh/include/asm/irq.h +++ b/arch/sh/include/asm/irq.h @@ -22,7 +22,6 @@ extern unsigned short *irq_mask_register; /* * PINT IRQs */ -void init_IRQ_pint(void); void make_imask_irq(unsigned int irq); static inline int generic_irq_demux(int irq) diff --git a/arch/sh/include/asm/rtc.h b/arch/sh/include/asm/rtc.h index 69dbae2949b0..7fe7002d1d50 100644 --- a/arch/sh/include/asm/rtc.h +++ b/arch/sh/include/asm/rtc.h @@ -2,8 +2,6 @@ #ifndef _ASM_RTC_H #define _ASM_RTC_H -void time_init(void); - #define RTC_CAP_4_DIGIT_YEAR (1 << 0) struct sh_rtc_platform_info { diff --git a/arch/sh/include/asm/thread_info.h b/arch/sh/include/asm/thread_info.h index 1400fbb8b423..9f19a682d315 100644 --- a/arch/sh/include/asm/thread_info.h +++ b/arch/sh/include/asm/thread_info.h @@ -84,9 +84,6 @@ static inline struct thread_info *current_thread_info(void) #define THREAD_SIZE_ORDER (THREAD_SHIFT - PAGE_SHIFT) -extern void arch_task_cache_init(void); -extern int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src); -extern void arch_release_task_struct(struct task_struct *tsk); extern void init_thread_xstate(void); #endif /* __ASSEMBLY__ */ diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 36fd488ccbfa..6197b87f2b3b 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -33,7 +33,7 @@ config SPARC select ARCH_WANT_IPC_PARSE_VERSION select GENERIC_PCI_IOMAP select HAS_IOPORT - select HAVE_NMI_WATCHDOG if SPARC64 + select HAVE_HARDLOCKUP_DETECTOR_SPARC64 if SPARC64 select HAVE_CBPF_JIT if SPARC32 select HAVE_EBPF_JIT if SPARC64 select HAVE_DEBUG_BUGVERBOSE diff --git a/arch/sparc/Kconfig.debug b/arch/sparc/Kconfig.debug index 6b2bec1888b3..37e003665de6 100644 --- a/arch/sparc/Kconfig.debug +++ b/arch/sparc/Kconfig.debug @@ -14,3 +14,17 @@ config FRAME_POINTER bool depends on MCOUNT default y + +config HAVE_HARDLOCKUP_DETECTOR_SPARC64 + bool + depends on HAVE_NMI + select HARDLOCKUP_DETECTOR_SPARC64 + help + Sparc64 hardlockup detector is the last one developed before adding + the common infrastructure for handling hardlockup detectors. It is + always built. It does _not_ use the common command line parameters + and sysctl interface, except for /proc/sys/kernel/nmi_watchdog. + +config HARDLOCKUP_DETECTOR_SPARC64 + bool + depends on HAVE_HARDLOCKUP_DETECTOR_SPARC64 diff --git a/arch/sparc/include/asm/irq_32.h b/arch/sparc/include/asm/irq_32.h index 43ec2609b811..6ee48321cbc2 100644 --- a/arch/sparc/include/asm/irq_32.h +++ b/arch/sparc/include/asm/irq_32.h @@ -17,7 +17,6 @@ #define irq_canonicalize(irq) (irq) -void __init init_IRQ(void); void __init sun4d_init_sbi_irq(void); #define NO_IRQ 0xffffffff diff --git a/arch/sparc/include/asm/irq_64.h b/arch/sparc/include/asm/irq_64.h index 154df2cf19f4..b436029f1ced 100644 --- a/arch/sparc/include/asm/irq_64.h +++ b/arch/sparc/include/asm/irq_64.h @@ -61,7 +61,6 @@ void sun4u_destroy_msi(unsigned int irq); unsigned int irq_alloc(unsigned int dev_handle, unsigned int dev_ino); void irq_free(unsigned int irq); -void __init init_IRQ(void); void fixup_irqs(void); static inline void set_softint(unsigned long bits) diff --git a/arch/sparc/include/asm/nmi.h b/arch/sparc/include/asm/nmi.h index 90ee7863d9fe..920dc23f443f 100644 --- a/arch/sparc/include/asm/nmi.h +++ b/arch/sparc/include/asm/nmi.h @@ -8,7 +8,6 @@ void nmi_adjust_hz(unsigned int new_hz); extern atomic_t nmi_active; -void arch_touch_nmi_watchdog(void); void start_nmi_watchdog(void *unused); void stop_nmi_watchdog(void *unused); diff --git a/arch/sparc/include/asm/timer_64.h b/arch/sparc/include/asm/timer_64.h index dcfad4613e18..ffff52c8b760 100644 --- a/arch/sparc/include/asm/timer_64.h +++ b/arch/sparc/include/asm/timer_64.h @@ -34,7 +34,6 @@ extern struct sparc64_tick_ops *tick_ops; unsigned long sparc64_get_clock_tick(unsigned int cpu); void setup_sparc64_timer(void); -void __init time_init(void); #define TICK_PRIV_BIT BIT(63) #define TICKCMP_IRQ_BIT BIT(63) diff --git a/arch/sparc/kernel/kernel.h b/arch/sparc/kernel/kernel.h index 9cd09a3ef35f..15da3c0597a5 100644 --- a/arch/sparc/kernel/kernel.h +++ b/arch/sparc/kernel/kernel.h @@ -91,7 +91,6 @@ extern int static_irq_count; extern spinlock_t irq_action_lock; void unexpected_irq(int irq, void *dev_id, struct pt_regs * regs); -void init_IRQ(void); /* sun4m_irq.c */ void sun4m_init_IRQ(void); diff --git a/arch/sparc/kernel/nmi.c b/arch/sparc/kernel/nmi.c index 060fff95a305..17cdfdbf1f3b 100644 --- a/arch/sparc/kernel/nmi.c +++ b/arch/sparc/kernel/nmi.c @@ -65,6 +65,11 @@ void arch_touch_nmi_watchdog(void) } EXPORT_SYMBOL(arch_touch_nmi_watchdog); +int __init watchdog_hardlockup_probe(void) +{ + return 0; +} + static void die_nmi(const char *str, struct pt_regs *regs, int do_panic) { int this_cpu = smp_processor_id(); @@ -282,11 +287,11 @@ __setup("nmi_watchdog=", setup_nmi_watchdog); * sparc specific NMI watchdog enable function. * Enables watchdog if it is not enabled already. */ -int watchdog_nmi_enable(unsigned int cpu) +void watchdog_hardlockup_enable(unsigned int cpu) { if (atomic_read(&nmi_active) == -1) { pr_warn("NMI watchdog cannot be enabled or disabled\n"); - return -1; + return; } /* @@ -295,17 +300,15 @@ int watchdog_nmi_enable(unsigned int cpu) * process first. */ if (!nmi_init_done) - return 0; + return; smp_call_function_single(cpu, start_nmi_watchdog, NULL, 1); - - return 0; } /* * sparc specific NMI watchdog disable function. * Disables watchdog if it is not disabled already. */ -void watchdog_nmi_disable(unsigned int cpu) +void watchdog_hardlockup_disable(unsigned int cpu) { if (atomic_read(&nmi_active) == -1) pr_warn_once("NMI watchdog cannot be enabled or disabled\n"); diff --git a/arch/x86/include/asm/irq.h b/arch/x86/include/asm/irq.h index 768aa234cbb4..29e083b92813 100644 --- a/arch/x86/include/asm/irq.h +++ b/arch/x86/include/asm/irq.h @@ -40,8 +40,6 @@ extern void __handle_irq(struct irq_desc *desc, struct pt_regs *regs); extern void init_ISA_irqs(void); -extern void __init init_IRQ(void); - #ifdef CONFIG_X86_LOCAL_APIC void arch_trigger_cpumask_backtrace(const struct cpumask *mask, bool exclude_self); diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h index f1cccba52eb9..d63b02940747 100644 --- a/arch/x86/include/asm/thread_info.h +++ b/arch/x86/include/asm/thread_info.h @@ -232,9 +232,6 @@ static inline int arch_within_stack_frames(const void * const stack, current_thread_info()->status & TS_COMPAT) #endif -extern void arch_task_cache_init(void); -extern int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src); -extern void arch_release_task_struct(struct task_struct *tsk); extern void arch_setup_new_exec(void); #define arch_setup_new_exec arch_setup_new_exec #endif /* !__ASSEMBLY__ */ diff --git a/arch/x86/include/asm/time.h b/arch/x86/include/asm/time.h index a53961c64a56..f360104ed172 100644 --- a/arch/x86/include/asm/time.h +++ b/arch/x86/include/asm/time.h @@ -6,7 +6,6 @@ #include <asm/mc146818rtc.h> extern void hpet_time_init(void); -extern void time_init(void); extern bool pit_timer_init(void); extern bool tsc_clocksource_watchdog_disabled(void); diff --git a/arch/x86/include/asm/tsc.h b/arch/x86/include/asm/tsc.h index dc1b03be43eb..594fce0ca744 100644 --- a/arch/x86/include/asm/tsc.h +++ b/arch/x86/include/asm/tsc.h @@ -32,7 +32,6 @@ extern struct system_counterval_t convert_art_ns_to_tsc(u64 art_ns); extern void tsc_early_init(void); extern void tsc_init(void); -extern unsigned long calibrate_delay_is_known(void); extern void mark_tsc_unstable(char *reason); extern int unsynchronized_tsc(void); extern int check_tsc_unstable(void); |