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c718a0bad7
There are some building warnings when building LoongArch kernel with W=1
as following, this patch fixes them.
arch/loongarch/kernel/acpi.c:284:13: warning: no previous prototype for ‘acpi_numa_arch_fixup’ [-Wmissing-prototypes]
284 | void __init acpi_numa_arch_fixup(void) {}
| ^~~~~~~~~~~~~~~~~~~~
arch/loongarch/kernel/time.c:32:13: warning: no previous prototype for ‘constant_timer_interrupt’ [-Wmissing-prototypes]
32 | irqreturn_t constant_timer_interrupt(int irq, void *data)
| ^~~~~~~~~~~~~~~~~~~~~~~~
arch/loongarch/kernel/traps.c:496:25: warning: no previous prototype for 'do_fpe' [-Wmissing-prototypes]
496 | asmlinkage void noinstr do_fpe(struct pt_regs *regs
| ^~~~~~
arch/loongarch/kernel/traps.c:813:22: warning: variable ‘opcode’ set but not used [-Wunused-but-set-variable]
813 | unsigned int opcode;
| ^~~~~~
arch/loongarch/kernel/signal.c:895:14: warning: no previous prototype for ‘get_sigframe’ [-Wmissing-prototypes]
895 | void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs,
| ^~~~~~~~~~~~
arch/loongarch/kernel/syscall.c:21:40: warning: initialized field overwritten [-Woverride-init]
21 | #define __SYSCALL(nr, call) [nr] = (call),
| ^
arch/loongarch/kernel/syscall.c:40:14: warning: no previous prototype for ‘do_syscall’ [-Wmissing-prototypes]
40 | void noinstr do_syscall(struct pt_regs *regs)
| ^~~~~~~~~~
arch/loongarch/kernel/smp.c:502:17: warning: no previous prototype for ‘start_secondary’ [-Wmissing-prototypes]
502 | asmlinkage void start_secondary(void)
| ^~~~~~~~~~~~~~~
arch/loongarch/kernel/process.c:309:15: warning: no previous prototype for ‘arch_align_stack’ [-Wmissing-prototypes]
309 | unsigned long arch_align_stack(unsigned long sp)
| ^~~~~~~~~~~~~~~~
arch/loongarch/kernel/topology.c:13:5: warning: no previous prototype for ‘arch_register_cpu’ [-Wmissing-prototypes]
13 | int arch_register_cpu(int cpu)
| ^~~~~~~~~~~~~~~~~
arch/loongarch/kernel/topology.c:27:6: warning: no previous prototype for ‘arch_unregister_cpu’ [-Wmissing-prototypes]
27 | void arch_unregister_cpu(int cpu)
| ^~~~~~~~~~~~~~~~~~~
arch/loongarch/kernel/module-sections.c:103:5: warning: no previous prototype for ‘module_frob_arch_sections’ [-Wmissing-prototypes]
103 | int module_frob_arch_sections(Elf_Ehdr *ehdr, Elf_Shdr *sechdrs,
| ^~~~~~~~~~~~~~~~~~~~~~~~~
arch/loongarch/mm/hugetlbpage.c:56:5: warning: no previous prototype for ‘is_aligned_hugepage_range’ [-Wmissing-prototypes]
56 | int is_aligned_hugepage_range(unsigned long addr, unsigned long len)
| ^~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
105 lines
2.6 KiB
C
105 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Author: Huacai Chen <chenhuacai@loongson.cn>
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* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
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*/
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#ifndef __ASM_SMP_H
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#define __ASM_SMP_H
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#include <linux/atomic.h>
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#include <linux/bitops.h>
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#include <linux/linkage.h>
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#include <linux/threads.h>
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#include <linux/cpumask.h>
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extern int smp_num_siblings;
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extern int num_processors;
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extern int disabled_cpus;
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extern cpumask_t cpu_sibling_map[];
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extern cpumask_t cpu_core_map[];
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extern cpumask_t cpu_foreign_map[];
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void loongson_smp_setup(void);
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void loongson_prepare_cpus(unsigned int max_cpus);
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void loongson_boot_secondary(int cpu, struct task_struct *idle);
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void loongson_init_secondary(void);
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void loongson_smp_finish(void);
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void loongson_send_ipi_single(int cpu, unsigned int action);
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void loongson_send_ipi_mask(const struct cpumask *mask, unsigned int action);
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#ifdef CONFIG_HOTPLUG_CPU
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int loongson_cpu_disable(void);
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void loongson_cpu_die(unsigned int cpu);
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#endif
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static inline void plat_smp_setup(void)
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{
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loongson_smp_setup();
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}
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static inline int raw_smp_processor_id(void)
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{
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#if defined(__VDSO__)
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extern int vdso_smp_processor_id(void)
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__compiletime_error("VDSO should not call smp_processor_id()");
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return vdso_smp_processor_id();
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#else
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return current_thread_info()->cpu;
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#endif
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}
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#define raw_smp_processor_id raw_smp_processor_id
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/* Map from cpu id to sequential logical cpu number. This will only
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* not be idempotent when cpus failed to come on-line. */
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extern int __cpu_number_map[NR_CPUS];
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#define cpu_number_map(cpu) __cpu_number_map[cpu]
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/* The reverse map from sequential logical cpu number to cpu id. */
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extern int __cpu_logical_map[NR_CPUS];
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#define cpu_logical_map(cpu) __cpu_logical_map[cpu]
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#define cpu_physical_id(cpu) cpu_logical_map(cpu)
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#define SMP_BOOT_CPU 0x1
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#define SMP_RESCHEDULE 0x2
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#define SMP_CALL_FUNCTION 0x4
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struct secondary_data {
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unsigned long stack;
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unsigned long thread_info;
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};
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extern struct secondary_data cpuboot_data;
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extern asmlinkage void smpboot_entry(void);
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extern asmlinkage void start_secondary(void);
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extern void calculate_cpu_foreign_map(void);
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/*
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* Generate IPI list text
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*/
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extern void show_ipi_list(struct seq_file *p, int prec);
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static inline void arch_send_call_function_single_ipi(int cpu)
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{
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loongson_send_ipi_single(cpu, SMP_CALL_FUNCTION);
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}
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static inline void arch_send_call_function_ipi_mask(const struct cpumask *mask)
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{
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loongson_send_ipi_mask(mask, SMP_CALL_FUNCTION);
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}
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#ifdef CONFIG_HOTPLUG_CPU
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static inline int __cpu_disable(void)
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{
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return loongson_cpu_disable();
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}
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static inline void __cpu_die(unsigned int cpu)
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{
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loongson_cpu_die(cpu);
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}
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#endif
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#endif /* __ASM_SMP_H */
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