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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_CURRENT_H
#define _ASM_X86_CURRENT_H
#include <linux/compiler.h>
#ifndef __ASSEMBLY__
#include <linux/cache.h>
#include <asm/percpu.h>
struct task_struct;
struct pcpu_hot {
union {
struct {
struct task_struct *current_task;
int preempt_count;
int cpu_number;
#ifdef CONFIG_MITIGATION_CALL_DEPTH_TRACKING
u64 call_depth;
#endif
unsigned long top_of_stack;
void *hardirq_stack_ptr;
u16 softirq_pending;
#ifdef CONFIG_X86_64
bool hardirq_stack_inuse;
#else
void *softirq_stack_ptr;
#endif
};
u8 pad[64];
};
};
static_assert(sizeof(struct pcpu_hot) == 64);
DECLARE_PER_CPU_ALIGNED(struct pcpu_hot, pcpu_hot);
static __always_inline struct task_struct *get_current(void)
{
return this_cpu_read_stable(pcpu_hot.current_task);
}
#define current get_current()
#endif /* __ASSEMBLY__ */
#endif /* _ASM_X86_CURRENT_H */