From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- arch/x86/include/asm/current.h | 48 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 arch/x86/include/asm/current.h (limited to 'arch/x86/include/asm/current.h') diff --git a/arch/x86/include/asm/current.h b/arch/x86/include/asm/current.h new file mode 100644 index 0000000000..a1168e7b69 --- /dev/null +++ b/arch/x86/include/asm/current.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_X86_CURRENT_H +#define _ASM_X86_CURRENT_H + +#include + +#ifndef __ASSEMBLY__ + +#include +#include + +struct task_struct; + +struct pcpu_hot { + union { + struct { + struct task_struct *current_task; + int preempt_count; + int cpu_number; +#ifdef CONFIG_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 */ -- cgit v1.2.3