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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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5ed881bc3a
sparse identifies several missing prototypes caused by missing preprocessor include directives: arch/riscv/kernel/cpufeature.c:16:6: warning: symbol 'has_fpu' was not declared. Should it be static? arch/riscv/kernel/process.c:26:6: warning: symbol 'arch_cpu_idle' was not declared. Should it be static? arch/riscv/kernel/reset.c:15:6: warning: symbol 'pm_power_off' was not declared. Should it be static? arch/riscv/kernel/syscall_table.c:15:6: warning: symbol 'sys_call_table' was not declared. Should it be static? arch/riscv/kernel/traps.c:149:13: warning: symbol 'trap_init' was not declared. Should it be static? arch/riscv/kernel/vdso.c:54:5: warning: symbol 'arch_setup_additional_pages' was not declared. Should it be static? arch/riscv/kernel/smp.c:64:6: warning: symbol 'arch_match_cpu_phys_id' was not declared. Should it be static? arch/riscv/kernel/module-sections.c:89:5: warning: symbol 'module_frob_arch_sections' was not declared. Should it be static? arch/riscv/mm/context.c:42:6: warning: symbol 'switch_mm' was not declared. Should it be static? Fix by including the appropriate header files in the appropriate source files. This patch should have no functional impact. Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
79 lines
1.9 KiB
C
79 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2012 Regents of the University of California
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*/
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#ifndef _ASM_RISCV_SWITCH_TO_H
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#define _ASM_RISCV_SWITCH_TO_H
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#include <linux/sched/task_stack.h>
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#include <asm/processor.h>
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#include <asm/ptrace.h>
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#include <asm/csr.h>
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#ifdef CONFIG_FPU
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extern void __fstate_save(struct task_struct *save_to);
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extern void __fstate_restore(struct task_struct *restore_from);
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static inline void __fstate_clean(struct pt_regs *regs)
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{
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regs->sstatus = (regs->sstatus & ~SR_FS) | SR_FS_CLEAN;
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}
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static inline void fstate_off(struct task_struct *task,
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struct pt_regs *regs)
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{
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regs->sstatus = (regs->sstatus & ~SR_FS) | SR_FS_OFF;
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}
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static inline void fstate_save(struct task_struct *task,
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struct pt_regs *regs)
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{
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if ((regs->sstatus & SR_FS) == SR_FS_DIRTY) {
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__fstate_save(task);
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__fstate_clean(regs);
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}
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}
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static inline void fstate_restore(struct task_struct *task,
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struct pt_regs *regs)
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{
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if ((regs->sstatus & SR_FS) != SR_FS_OFF) {
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__fstate_restore(task);
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__fstate_clean(regs);
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}
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}
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static inline void __switch_to_aux(struct task_struct *prev,
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struct task_struct *next)
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{
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struct pt_regs *regs;
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regs = task_pt_regs(prev);
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if (unlikely(regs->sstatus & SR_SD))
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fstate_save(prev, regs);
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fstate_restore(next, task_pt_regs(next));
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}
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extern bool has_fpu;
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#else
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#define has_fpu false
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#define fstate_save(task, regs) do { } while (0)
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#define fstate_restore(task, regs) do { } while (0)
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#define __switch_to_aux(__prev, __next) do { } while (0)
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#endif
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extern struct task_struct *__switch_to(struct task_struct *,
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struct task_struct *);
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#define switch_to(prev, next, last) \
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do { \
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struct task_struct *__prev = (prev); \
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struct task_struct *__next = (next); \
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if (has_fpu) \
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__switch_to_aux(__prev, __next); \
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((last) = __switch_to(__prev, __next)); \
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} while (0)
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#endif /* _ASM_RISCV_SWITCH_TO_H */
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