arch/mips/kernel/fpu-probe.h

Source file repositories/reference/linux-study-clean/arch/mips/kernel/fpu-probe.h

File Facts

System
Linux kernel
Corpus path
arch/mips/kernel/fpu-probe.h
Extension
.h
Size
699 bytes
Lines
41
Domain
Architecture Layer
Bucket
arch/mips
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#include <linux/kernel.h>

#include <asm/cpu.h>
#include <asm/cpu-info.h>

#ifdef CONFIG_MIPS_FP_SUPPORT

extern int mips_fpu_disabled;

int __cpu_has_fpu(void);
void cpu_set_fpu_opts(struct cpuinfo_mips *c);
void cpu_set_nofpu_opts(struct cpuinfo_mips *c);

#else /* !CONFIG_MIPS_FP_SUPPORT */

#define mips_fpu_disabled 1

static inline unsigned long cpu_get_fpu_id(void)
{
	return FPIR_IMP_NONE;
}

static inline int __cpu_has_fpu(void)
{
	return 0;
}

static inline void cpu_set_fpu_opts(struct cpuinfo_mips *c)
{
	/* no-op */
}

static inline void cpu_set_nofpu_opts(struct cpuinfo_mips *c)
{
	/* no-op */
}

#endif /* CONFIG_MIPS_FP_SUPPORT */

Annotation

Implementation Notes