On Wed, 17 May 2023 06:10:59 PDT (-0700), arnd@kernel.org wrote:
> From: Arnd Bergmann <arnd@arndb.de>
>
> The init/main.c file contains some extern declarations for functions
> defined in architecture code, and it defines some other functions that
> are called from architecture code with a custom prototype. Both of those
> result in warnings with 'make W=1':
>
> init/calibrate.c:261:37: error: no previous prototype for 'calibrate_delay_is_known' [-Werror=missing-prototypes]
> init/main.c:790:20: error: no previous prototype for 'mem_encrypt_init' [-Werror=missing-prototypes]
> init/main.c:792:20: error: no previous prototype for 'poking_init' [-Werror=missing-prototypes]
> arch/arm64/kernel/irq.c:122:13: error: no previous prototype for 'init_IRQ' [-Werror=missing-prototypes]
> arch/arm64/kernel/time.c:55:13: error: no previous prototype for 'time_init' [-Werror=missing-prototypes]
> arch/x86/kernel/process.c:935:13: error: no previous prototype for 'arch_post_acpi_subsys_init' [-Werror=missing-prototypes]
> init/calibrate.c:261:37: error: no previous prototype for 'calibrate_delay_is_known' [-Werror=missing-prototypes]
> kernel/fork.c:991:20: error: no previous prototype for 'arch_task_cache_init' [-Werror=missing-prototypes]
>
> Add prototypes for all of these in include/linux/init.h or another
> appropriate header, and remove the duplicate declarations from
> architecture specific code.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> arch/arm/include/asm/irq.h | 1 -
> arch/microblaze/include/asm/setup.h | 2 --
> arch/mips/include/asm/irq.h | 1 -
> arch/parisc/kernel/smp.c | 1 -
> arch/powerpc/include/asm/irq.h | 1 -
> arch/riscv/include/asm/irq.h | 2 --
> arch/riscv/include/asm/timex.h | 2 --
> arch/s390/kernel/entry.h | 2 --
> arch/sh/include/asm/irq.h | 1 -
> arch/sh/include/asm/rtc.h | 2 --
> arch/sparc/include/asm/irq_32.h | 1 -
> arch/sparc/include/asm/irq_64.h | 1 -
> arch/sparc/include/asm/timer_64.h | 1 -
> arch/sparc/kernel/kernel.h | 4 ----
> arch/x86/include/asm/irq.h | 2 --
> arch/x86/include/asm/mem_encrypt.h | 3 ---
> arch/x86/include/asm/time.h | 1 -
> arch/x86/include/asm/tsc.h | 1 -
> include/linux/acpi.h | 3 ++-
> include/linux/delay.h | 1 +
> include/linux/init.h | 20 ++++++++++++++++++++
> init/main.c | 18 ------------------
> 22 files changed, 23 insertions(+), 48 deletions(-)
...
> 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 */
Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com> # RISC-V
Acked-by: Palmer Dabbelt <palmer@rivosinc.com> # RISC-V
Thanks!
@@ -23,7 +23,6 @@
#endif
#ifndef __ASSEMBLY__
-void init_IRQ(void);
#ifdef CONFIG_SMP
#include <linux/cpumask.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);
@@ -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];
/*
@@ -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 */
@@ -50,7 +50,6 @@ 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);
@@ -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 */
@@ -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 */
@@ -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;
@@ -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)
@@ -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_data {
@@ -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
@@ -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)
@@ -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)
@@ -62,9 +62,6 @@ asmlinkage void do_rt_sigreturn32(struct pt_regs *regs);
void do_signal32(struct pt_regs * regs);
asmlinkage int do_sys32_sigstack(u32 u_ssptr, u32 u_ossptr, unsigned long sp);
-/* time_64.c */
-void __init time_init_early(void);
-
/* compat_audit.c */
extern unsigned int sparc32_dir_class[];
extern unsigned int sparc32_chattr_class[];
@@ -91,7 +88,6 @@ 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);
@@ -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);
@@ -87,9 +87,6 @@ static inline void mem_encrypt_free_decrypted_mem(void) { }
#endif /* CONFIG_AMD_MEM_ENCRYPT */
-/* Architecture __weak replacement functions */
-void __init mem_encrypt_init(void);
-
void add_encrypt_protection_map(void);
/*
@@ -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);
@@ -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);
@@ -712,7 +712,6 @@ int acpi_match_platform_list(const struct acpi_platform_list *plat);
extern void acpi_early_init(void);
extern void acpi_subsystem_init(void);
-extern void arch_post_acpi_subsys_init(void);
extern int acpi_nvs_register(__u64 start, __u64 size);
@@ -1084,6 +1083,8 @@ static inline bool acpi_sleep_state_supported(u8 sleep_state)
#endif /* !CONFIG_ACPI */
+extern void arch_post_acpi_subsys_init(void);
+
#ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
int acpi_ioapic_add(acpi_handle root);
#else
@@ -56,6 +56,7 @@ static inline void ndelay(unsigned long x)
extern unsigned long lpj_fine;
void calibrate_delay(void);
+unsigned long calibrate_delay_is_known(void);
void __attribute__((weak)) calibration_delay_done(void);
void msleep(unsigned int msecs);
unsigned long msleep_interruptible(unsigned int msecs);
@@ -152,6 +152,24 @@ extern unsigned int reset_devices;
void setup_arch(char **);
void prepare_namespace(void);
void __init init_rootfs(void);
+
+void init_IRQ(void);
+void time_init(void);
+void mem_encrypt_init(void);
+void poking_init(void);
+void pgtable_cache_init(void);
+
+extern initcall_entry_t __initcall_start[];
+extern initcall_entry_t __initcall0_start[];
+extern initcall_entry_t __initcall1_start[];
+extern initcall_entry_t __initcall2_start[];
+extern initcall_entry_t __initcall3_start[];
+extern initcall_entry_t __initcall4_start[];
+extern initcall_entry_t __initcall5_start[];
+extern initcall_entry_t __initcall6_start[];
+extern initcall_entry_t __initcall7_start[];
+extern initcall_entry_t __initcall_end[];
+
extern struct file_system_type rootfs_fs_type;
#if defined(CONFIG_STRICT_KERNEL_RWX) || defined(CONFIG_STRICT_MODULE_RWX)
@@ -309,6 +327,8 @@ struct obs_kernel_param {
int early;
};
+extern const struct obs_kernel_param __setup_start[], __setup_end[];
+
/*
* Only for really core code. See moduleparam.h for the normal way.
*
@@ -115,10 +115,6 @@
static int kernel_init(void *);
-extern void init_IRQ(void);
-extern void radix_tree_init(void);
-extern void maple_tree_init(void);
-
/*
* Debug helper: via this flag we know that we are in 'early bootup code'
* where only the boot processor is running with IRQ disabled. This means
@@ -137,7 +133,6 @@ EXPORT_SYMBOL(system_state);
#define MAX_INIT_ARGS CONFIG_INIT_ENV_ARG_LIMIT
#define MAX_INIT_ENVS CONFIG_INIT_ENV_ARG_LIMIT
-extern void time_init(void);
/* Default late time init is NULL. archs can override this later. */
void (*__initdata late_time_init)(void);
@@ -196,8 +191,6 @@ static const char *argv_init[MAX_INIT_ARGS+2] = { "init", NULL, };
const char *envp_init[MAX_INIT_ENVS+2] = { "HOME=/", "TERM=linux", NULL, };
static const char *panic_later, *panic_param;
-extern const struct obs_kernel_param __setup_start[], __setup_end[];
-
static bool __init obsolete_checksetup(char *line)
{
const struct obs_kernel_param *p;
@@ -1263,17 +1256,6 @@ int __init_or_module do_one_initcall(initcall_t fn)
}
-extern initcall_entry_t __initcall_start[];
-extern initcall_entry_t __initcall0_start[];
-extern initcall_entry_t __initcall1_start[];
-extern initcall_entry_t __initcall2_start[];
-extern initcall_entry_t __initcall3_start[];
-extern initcall_entry_t __initcall4_start[];
-extern initcall_entry_t __initcall5_start[];
-extern initcall_entry_t __initcall6_start[];
-extern initcall_entry_t __initcall7_start[];
-extern initcall_entry_t __initcall_end[];
-
static initcall_entry_t *initcall_levels[] __initdata = {
__initcall0_start,
__initcall1_start,