From 89f579ce99f7e028e81885d3965f973c0f787611 Mon Sep 17 00:00:00 2001 From: Yi Wang Date: Thu, 22 Nov 2018 10:04:09 +0800 Subject: [PATCH] x86/headers: Fix -Wmissing-prototypes warning MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When building the kernel with W=1 we get a lot of -Wmissing-prototypes warnings, which are trivial in nature and easy to fix - and which may mask some real future bugs if the prototypes get out of sync with the function definition. This patch fixes most of -Wmissing-prototypes warnings which are in the root directory of arch/x86/kernel, not including the subdirectories. These are the warnings fixed in this patch: arch/x86/kernel/signal.c:865:17: warning: no previous prototype for ‘sys32_x32_rt_sigreturn’ [-Wmissing-prototypes] arch/x86/kernel/signal_compat.c:164:6: warning: no previous prototype for ‘sigaction_compat_abi’ [-Wmissing-prototypes] arch/x86/kernel/traps.c:625:46: warning: no previous prototype for ‘sync_regs’ [-Wmissing-prototypes] arch/x86/kernel/traps.c:640:24: warning: no previous prototype for ‘fixup_bad_iret’ [-Wmissing-prototypes] arch/x86/kernel/traps.c:929:13: warning: no previous prototype for ‘trap_init’ [-Wmissing-prototypes] arch/x86/kernel/irq.c:270:28: warning: no previous prototype for ‘smp_x86_platform_ipi’ [-Wmissing-prototypes] arch/x86/kernel/irq.c:301:16: warning: no previous prototype for ‘smp_kvm_posted_intr_ipi’ [-Wmissing-prototypes] arch/x86/kernel/irq.c:314:16: warning: no previous prototype for ‘smp_kvm_posted_intr_wakeup_ipi’ [-Wmissing-prototypes] arch/x86/kernel/irq.c:328:16: warning: no previous prototype for ‘smp_kvm_posted_intr_nested_ipi’ [-Wmissing-prototypes] arch/x86/kernel/irq_work.c:16:28: warning: no previous prototype for ‘smp_irq_work_interrupt’ [-Wmissing-prototypes] arch/x86/kernel/irqinit.c:79:13: warning: no previous prototype for ‘init_IRQ’ [-Wmissing-prototypes] arch/x86/kernel/quirks.c:672:13: warning: no previous prototype for ‘early_platform_quirks’ [-Wmissing-prototypes] arch/x86/kernel/tsc.c:1499:15: warning: no previous prototype for ‘calibrate_delay_is_known’ [-Wmissing-prototypes] arch/x86/kernel/process.c:653:13: warning: no previous prototype for ‘arch_post_acpi_subsys_init’ [-Wmissing-prototypes] arch/x86/kernel/process.c:717:15: warning: no previous prototype for ‘arch_randomize_brk’ [-Wmissing-prototypes] arch/x86/kernel/process.c:784:6: warning: no previous prototype for ‘do_arch_prctl_common’ [-Wmissing-prototypes] arch/x86/kernel/reboot.c:869:6: warning: no previous prototype for ‘nmi_panic_self_stop’ [-Wmissing-prototypes] arch/x86/kernel/smp.c:176:27: warning: no previous prototype for ‘smp_reboot_interrupt’ [-Wmissing-prototypes] arch/x86/kernel/smp.c:260:28: warning: no previous prototype for ‘smp_reschedule_interrupt’ [-Wmissing-prototypes] arch/x86/kernel/smp.c:281:28: warning: no previous prototype for ‘smp_call_function_interrupt’ [-Wmissing-prototypes] arch/x86/kernel/smp.c:291:28: warning: no previous prototype for ‘smp_call_function_single_interrupt’ [-Wmissing-prototypes] arch/x86/kernel/ftrace.c:840:6: warning: no previous prototype for ‘arch_ftrace_update_trampoline’ [-Wmissing-prototypes] arch/x86/kernel/ftrace.c:934:7: warning: no previous prototype for ‘arch_ftrace_trampoline_func’ [-Wmissing-prototypes] arch/x86/kernel/ftrace.c:946:6: warning: no previous prototype for ‘arch_ftrace_trampoline_free’ [-Wmissing-prototypes] arch/x86/kernel/crash.c:114:6: warning: no previous prototype for ‘crash_smp_send_stop’ [-Wmissing-prototypes] arch/x86/kernel/crash.c:351:5: warning: no previous prototype for ‘crash_setup_memmap_entries’ [-Wmissing-prototypes] arch/x86/kernel/crash.c:424:5: warning: no previous prototype for ‘crash_load_segments’ [-Wmissing-prototypes] arch/x86/kernel/machine_kexec_64.c:372:7: warning: no previous prototype for ‘arch_kexec_kernel_image_load’ [-Wmissing-prototypes] arch/x86/kernel/paravirt-spinlocks.c:12:16: warning: no previous prototype for ‘__native_queued_spin_unlock’ [-Wmissing-prototypes] arch/x86/kernel/paravirt-spinlocks.c:18:6: warning: no previous prototype for ‘pv_is_native_spin_unlock’ [-Wmissing-prototypes] arch/x86/kernel/paravirt-spinlocks.c:24:16: warning: no previous prototype for ‘__native_vcpu_is_preempted’ [-Wmissing-prototypes] arch/x86/kernel/paravirt-spinlocks.c:30:6: warning: no previous prototype for ‘pv_is_native_vcpu_is_preempted’ [-Wmissing-prototypes] arch/x86/kernel/kvm.c:258:1: warning: no previous prototype for ‘do_async_page_fault’ [-Wmissing-prototypes] arch/x86/kernel/jailhouse.c:200:6: warning: no previous prototype for ‘jailhouse_paravirt’ [-Wmissing-prototypes] arch/x86/kernel/check.c:91:13: warning: no previous prototype for ‘setup_bios_corruption_check’ [-Wmissing-prototypes] arch/x86/kernel/check.c:139:6: warning: no previous prototype for ‘check_for_bios_corruption’ [-Wmissing-prototypes] arch/x86/kernel/devicetree.c:32:13: warning: no previous prototype for ‘early_init_dt_scan_chosen_arch’ [-Wmissing-prototypes] arch/x86/kernel/devicetree.c:42:13: warning: no previous prototype for ‘add_dtb’ [-Wmissing-prototypes] arch/x86/kernel/devicetree.c:108:6: warning: no previous prototype for ‘x86_of_pci_init’ [-Wmissing-prototypes] arch/x86/kernel/devicetree.c:314:13: warning: no previous prototype for ‘x86_dtb_init’ [-Wmissing-prototypes] arch/x86/kernel/tracepoint.c:16:5: warning: no previous prototype for ‘trace_pagefault_reg’ [-Wmissing-prototypes] arch/x86/kernel/tracepoint.c:22:6: warning: no previous prototype for ‘trace_pagefault_unreg’ [-Wmissing-prototypes] arch/x86/kernel/head64.c:113:22: warning: no previous prototype for ‘__startup_64’ [-Wmissing-prototypes] arch/x86/kernel/head64.c:262:15: warning: no previous prototype for ‘__startup_secondary_64’ [-Wmissing-prototypes] arch/x86/kernel/head64.c:350:12: warning: no previous prototype for ‘early_make_pgtable’ [-Wmissing-prototypes] [ mingo: rewrote the changelog, fixed build errors. ] Signed-off-by: Yi Wang Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: akataria@vmware.com Cc: akpm@linux-foundation.org Cc: andy.shevchenko@gmail.com Cc: anton@enomsg.org Cc: ard.biesheuvel@linaro.org Cc: bhe@redhat.com Cc: bhelgaas@google.com Cc: bp@alien8.de Cc: ccross@android.com Cc: devicetree@vger.kernel.org Cc: douly.fnst@cn.fujitsu.com Cc: dwmw@amazon.co.uk Cc: dyoung@redhat.com Cc: ebiederm@xmission.com Cc: frank.rowand@sony.com Cc: frowand.list@gmail.com Cc: ivan.gorinov@intel.com Cc: jailhouse-dev@googlegroups.com Cc: jan.kiszka@siemens.com Cc: jgross@suse.com Cc: jroedel@suse.de Cc: keescook@chromium.org Cc: kexec@lists.infradead.org Cc: konrad.wilk@oracle.com Cc: kvm@vger.kernel.org Cc: linux-efi@vger.kernel.org Cc: linux-pci@vger.kernel.org Cc: luto@kernel.org Cc: m.mizuma@jp.fujitsu.com Cc: namit@vmware.com Cc: oleg@redhat.com Cc: pasha.tatashin@oracle.com Cc: pbonzini@redhat.com Cc: prarit@redhat.com Cc: pravin.shedge4linux@gmail.com Cc: rajvi.jingar@intel.com Cc: rkrcmar@redhat.com Cc: robh+dt@kernel.org Cc: robh@kernel.org Cc: rostedt@goodmis.org Cc: takahiro.akashi@linaro.org Cc: thomas.lendacky@amd.com Cc: tony.luck@intel.com Cc: up2wing@gmail.com Cc: virtualization@lists.linux-foundation.org Cc: zhe.he@windriver.com Cc: zhong.weidong@zte.com.cn Link: http://lkml.kernel.org/r/1542852249-19820-1-git-send-email-wang.yi59@zte.com.cn Signed-off-by: Ingo Molnar --- arch/x86/include/asm/crash.h | 1 + arch/x86/include/asm/irq.h | 7 +++++++ arch/x86/include/asm/irq_work.h | 1 + arch/x86/include/asm/kvm_para.h | 1 + arch/x86/include/asm/paravirt.h | 5 +++++ arch/x86/include/asm/reboot.h | 1 + arch/x86/include/asm/sighandling.h | 5 +++++ arch/x86/include/asm/smp.h | 6 ++++++ arch/x86/include/asm/traps.h | 4 ++++ arch/x86/include/asm/tsc.h | 1 + arch/x86/kernel/check.c | 3 ++- arch/x86/kernel/crash.c | 1 + arch/x86/kernel/devicetree.c | 1 + arch/x86/kernel/jailhouse.c | 1 + arch/x86/kernel/process.c | 3 +++ arch/x86/kernel/quirks.c | 1 + arch/x86/kernel/tracepoint.c | 1 + include/linux/ftrace.h | 3 +++ include/linux/kexec.h | 1 + include/linux/of_fdt.h | 1 + include/linux/ptrace.h | 1 + 21 files changed, 48 insertions(+), 1 deletion(-) diff --git a/arch/x86/include/asm/crash.h b/arch/x86/include/asm/crash.h index a7adb2bfbf0b..0acf5ee45a21 100644 --- a/arch/x86/include/asm/crash.h +++ b/arch/x86/include/asm/crash.h @@ -6,5 +6,6 @@ int crash_load_segments(struct kimage *image); int crash_copy_backup_region(struct kimage *image); int crash_setup_memmap_entries(struct kimage *image, struct boot_params *params); +void crash_smp_send_stop(void); #endif /* _ASM_X86_CRASH_H */ diff --git a/arch/x86/include/asm/irq.h b/arch/x86/include/asm/irq.h index 2395bb794c7b..fbb16e6b6c18 100644 --- a/arch/x86/include/asm/irq.h +++ b/arch/x86/include/asm/irq.h @@ -30,6 +30,9 @@ extern void fixup_irqs(void); #ifdef CONFIG_HAVE_KVM extern void kvm_set_posted_intr_wakeup_handler(void (*handler)(void)); +extern __visible void smp_kvm_posted_intr_ipi(struct pt_regs *regs); +extern __visible void smp_kvm_posted_intr_wakeup_ipi(struct pt_regs *regs); +extern __visible void smp_kvm_posted_intr_nested_ipi(struct pt_regs *regs); #endif extern void (*x86_platform_ipi_callback)(void); @@ -41,9 +44,13 @@ extern __visible unsigned int do_IRQ(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); + +extern __visible void smp_x86_platform_ipi(struct pt_regs *regs); #define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace #endif diff --git a/arch/x86/include/asm/irq_work.h b/arch/x86/include/asm/irq_work.h index 800ffce0db29..80b35e3adf03 100644 --- a/arch/x86/include/asm/irq_work.h +++ b/arch/x86/include/asm/irq_work.h @@ -10,6 +10,7 @@ static inline bool arch_irq_work_has_interrupt(void) return boot_cpu_has(X86_FEATURE_APIC); } extern void arch_irq_work_raise(void); +extern __visible void smp_irq_work_interrupt(struct pt_regs *regs); #else static inline bool arch_irq_work_has_interrupt(void) { diff --git a/arch/x86/include/asm/kvm_para.h b/arch/x86/include/asm/kvm_para.h index 4c723632c036..5ed3cf1c3934 100644 --- a/arch/x86/include/asm/kvm_para.h +++ b/arch/x86/include/asm/kvm_para.h @@ -92,6 +92,7 @@ void kvm_async_pf_task_wait(u32 token, int interrupt_kernel); void kvm_async_pf_task_wake(u32 token); u32 kvm_read_and_reset_pf_reason(void); extern void kvm_disable_steal_time(void); +void do_async_page_fault(struct pt_regs *regs, unsigned long error_code); #ifdef CONFIG_PARAVIRT_SPINLOCKS void __init kvm_spinlock_init(void); diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index 4bf42f9e4eea..a97f28d914d5 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -26,6 +26,11 @@ struct static_key; extern struct static_key paravirt_steal_enabled; extern struct static_key paravirt_steal_rq_enabled; +__visible void __native_queued_spin_unlock(struct qspinlock *lock); +bool pv_is_native_spin_unlock(void); +__visible bool __native_vcpu_is_preempted(long cpu); +bool pv_is_native_vcpu_is_preempted(void); + static inline u64 paravirt_steal_clock(int cpu) { return PVOP_CALL1(u64, time.steal_clock, cpu); diff --git a/arch/x86/include/asm/reboot.h b/arch/x86/include/asm/reboot.h index a671a1145906..04c17be9b5fd 100644 --- a/arch/x86/include/asm/reboot.h +++ b/arch/x86/include/asm/reboot.h @@ -26,6 +26,7 @@ void __noreturn machine_real_restart(unsigned int type); #define MRR_APM 1 typedef void (*nmi_shootdown_cb)(int, struct pt_regs*); +void nmi_panic_self_stop(struct pt_regs *regs); void nmi_shootdown_cpus(nmi_shootdown_cb callback); void run_crash_ipi_callback(struct pt_regs *regs); diff --git a/arch/x86/include/asm/sighandling.h b/arch/x86/include/asm/sighandling.h index bd26834724e5..2fcbd6f33ef7 100644 --- a/arch/x86/include/asm/sighandling.h +++ b/arch/x86/include/asm/sighandling.h @@ -17,4 +17,9 @@ void signal_fault(struct pt_regs *regs, void __user *frame, char *where); int setup_sigcontext(struct sigcontext __user *sc, void __user *fpstate, struct pt_regs *regs, unsigned long mask); + +#ifdef CONFIG_X86_X32_ABI +asmlinkage long sys32_x32_rt_sigreturn(void); +#endif + #endif /* _ASM_X86_SIGHANDLING_H */ diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h index 547c4fe50711..2e95b6c1bca3 100644 --- a/arch/x86/include/asm/smp.h +++ b/arch/x86/include/asm/smp.h @@ -148,6 +148,12 @@ void x86_idle_thread_init(unsigned int cpu, struct task_struct *idle); void smp_store_boot_cpu_info(void); void smp_store_cpu_info(int id); + +asmlinkage __visible void smp_reboot_interrupt(void); +__visible void smp_reschedule_interrupt(struct pt_regs *regs); +__visible void smp_call_function_interrupt(struct pt_regs *regs); +__visible void smp_call_function_single_interrupt(struct pt_regs *r); + #define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu) #define cpu_acpi_id(cpu) per_cpu(x86_cpu_to_acpiid, cpu) diff --git a/arch/x86/include/asm/traps.h b/arch/x86/include/asm/traps.h index 877afdedbbc5..5fcdf5687406 100644 --- a/arch/x86/include/asm/traps.h +++ b/arch/x86/include/asm/traps.h @@ -75,6 +75,10 @@ dotraplinkage void do_segment_not_present(struct pt_regs *regs, long error_code) dotraplinkage void do_stack_segment(struct pt_regs *regs, long error_code); #ifdef CONFIG_X86_64 dotraplinkage void do_double_fault(struct pt_regs *regs, long error_code); +asmlinkage __visible notrace struct pt_regs *sync_regs(struct pt_regs *eregs); +asmlinkage __visible notrace +struct bad_iret_stack *fixup_bad_iret(struct bad_iret_stack *s); +void __init trap_init(void); #endif dotraplinkage void do_general_protection(struct pt_regs *regs, long error_code); dotraplinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code); diff --git a/arch/x86/include/asm/tsc.h b/arch/x86/include/asm/tsc.h index eb5bbfeccb66..8a0c25c6bf09 100644 --- a/arch/x86/include/asm/tsc.h +++ b/arch/x86/include/asm/tsc.h @@ -35,6 +35,7 @@ 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); diff --git a/arch/x86/kernel/check.c b/arch/x86/kernel/check.c index 1979a76bfadd..5136e6818da8 100644 --- a/arch/x86/kernel/check.c +++ b/arch/x86/kernel/check.c @@ -9,6 +9,7 @@ #include #include +#include /* * Some BIOSes seem to corrupt the low 64k of memory during events @@ -136,7 +137,7 @@ void __init setup_bios_corruption_check(void) } -void check_for_bios_corruption(void) +static void check_for_bios_corruption(void) { int i; int corruption = 0; diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c index f631a3f15587..c8b07d8ea5a2 100644 --- a/arch/x86/kernel/crash.c +++ b/arch/x86/kernel/crash.c @@ -37,6 +37,7 @@ #include #include #include +#include /* Used while preparing memory map entries for second kernel */ struct crash_memmap_data { diff --git a/arch/x86/kernel/devicetree.c b/arch/x86/kernel/devicetree.c index 7299dcbf8e85..8d85e00bb40a 100644 --- a/arch/x86/kernel/devicetree.c +++ b/arch/x86/kernel/devicetree.c @@ -23,6 +23,7 @@ #include #include #include +#include __initdata u64 initial_dtb; char __initdata cmd_line[COMMAND_LINE_SIZE]; diff --git a/arch/x86/kernel/jailhouse.c b/arch/x86/kernel/jailhouse.c index 108c48d0d40e..1b2ee55a2dfb 100644 --- a/arch/x86/kernel/jailhouse.c +++ b/arch/x86/kernel/jailhouse.c @@ -19,6 +19,7 @@ #include #include #include +#include static __initdata struct jailhouse_setup_data setup_data; static unsigned int precalibrated_tsc_khz; diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c index 3c3ee8982577..b7cb5348f37f 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -22,6 +22,8 @@ #include #include #include +#include +#include #include #include #include @@ -39,6 +41,7 @@ #include #include #include +#include /* * per-CPU TSS segments. Threads are completely 'soft' on Linux, diff --git a/arch/x86/kernel/quirks.c b/arch/x86/kernel/quirks.c index 736348ead421..8451f38ad399 100644 --- a/arch/x86/kernel/quirks.c +++ b/arch/x86/kernel/quirks.c @@ -7,6 +7,7 @@ #include #include +#include #if defined(CONFIG_X86_IO_APIC) && defined(CONFIG_SMP) && defined(CONFIG_PCI) diff --git a/arch/x86/kernel/tracepoint.c b/arch/x86/kernel/tracepoint.c index 5bd30c442794..2e85f4dcf77b 100644 --- a/arch/x86/kernel/tracepoint.c +++ b/arch/x86/kernel/tracepoint.c @@ -10,6 +10,7 @@ #include #include +#include DEFINE_STATIC_KEY_FALSE(trace_pagefault_key); diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index a397907e8d72..182d669cc918 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -420,6 +420,9 @@ enum { }; void arch_ftrace_update_code(int command); +void arch_ftrace_update_trampoline(struct ftrace_ops *ops); +void *arch_ftrace_trampoline_func(struct ftrace_ops *ops, struct dyn_ftrace *rec); +void arch_ftrace_trampoline_free(struct ftrace_ops *ops); struct ftrace_rec_iter; diff --git a/include/linux/kexec.h b/include/linux/kexec.h index 9e4e638fb505..53efedae3d5b 100644 --- a/include/linux/kexec.h +++ b/include/linux/kexec.h @@ -174,6 +174,7 @@ int kexec_purgatory_get_set_symbol(struct kimage *image, const char *name, bool get_value); void *kexec_purgatory_get_symbol_addr(struct kimage *image, const char *name); +void * __weak arch_kexec_kernel_image_load(struct kimage *image); int __weak arch_kexec_apply_relocations_add(struct purgatory_info *pi, Elf_Shdr *section, const Elf_Shdr *relsec, diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h index b9cd9ebdf9b9..a713e5d156d8 100644 --- a/include/linux/of_fdt.h +++ b/include/linux/of_fdt.h @@ -76,6 +76,7 @@ extern int early_init_dt_scan_memory(unsigned long node, const char *uname, extern int early_init_dt_scan_chosen_stdout(void); extern void early_init_fdt_scan_reserved_mem(void); extern void early_init_fdt_reserve_self(void); +extern void __init early_init_dt_scan_chosen_arch(unsigned long node); extern void early_init_dt_add_memory_arch(u64 base, u64 size); extern int early_init_dt_mark_hotplug_memory_arch(u64 base, u64 size); extern int early_init_dt_reserve_memory_arch(phys_addr_t base, phys_addr_t size, diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h index 6c2ffed907f5..a37d7c00da65 100644 --- a/include/linux/ptrace.h +++ b/include/linux/ptrace.h @@ -428,4 +428,5 @@ extern int task_current_syscall(struct task_struct *target, long *callno, unsigned long args[6], unsigned int maxargs, unsigned long *sp, unsigned long *pc); +extern void sigaction_compat_abi(struct k_sigaction *act, struct k_sigaction *oact); #endif