diff options
Diffstat (limited to 'arch/metag/include/asm/thread_info.h')
| -rw-r--r-- | arch/metag/include/asm/thread_info.h | 141 |
1 files changed, 0 insertions, 141 deletions
diff --git a/arch/metag/include/asm/thread_info.h b/arch/metag/include/asm/thread_info.h deleted file mode 100644 index a1a9c7f5ca8c..000000000000 --- a/arch/metag/include/asm/thread_info.h +++ /dev/null @@ -1,141 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* thread_info.h: Meta low-level thread information - * - * Copyright (C) 2002 David Howells (dhowells@redhat.com) - * - Incorporating suggestions made by Linus Torvalds and Dave Miller - * - * Meta port by Imagination Technologies - */ - -#ifndef _ASM_THREAD_INFO_H -#define _ASM_THREAD_INFO_H - -#include <linux/compiler.h> -#include <asm/page.h> - -#ifndef __ASSEMBLY__ -#include <asm/processor.h> -#endif - -/* - * low level task data that entry.S needs immediate access to - * - this struct should fit entirely inside of one cache line - * - this struct shares the supervisor stack pages - * - if the contents of this structure are changed, the assembly constants must - * also be changed - */ -#ifndef __ASSEMBLY__ - -/* This must be 8 byte aligned so we can ensure stack alignment. */ -struct thread_info { - struct task_struct *task; /* main task structure */ - unsigned long flags; /* low level flags */ - unsigned long status; /* thread-synchronous flags */ - u32 cpu; /* current CPU */ - int preempt_count; /* 0 => preemptable, <0 => BUG */ - - mm_segment_t addr_limit; /* thread address space */ - - u8 supervisor_stack[0] __aligned(8); -}; - -#else /* !__ASSEMBLY__ */ - -#include <generated/asm-offsets.h> - -#endif - -#ifdef CONFIG_4KSTACKS -#define THREAD_SHIFT 12 -#else -#define THREAD_SHIFT 13 -#endif - -#if THREAD_SHIFT >= PAGE_SHIFT -#define THREAD_SIZE_ORDER (THREAD_SHIFT - PAGE_SHIFT) -#else -#define THREAD_SIZE_ORDER 0 -#endif - -#define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) - -#define STACK_WARN (THREAD_SIZE/8) -/* - * macros/functions for gaining access to the thread information structure - */ -#ifndef __ASSEMBLY__ - -#define INIT_THREAD_INFO(tsk) \ -{ \ - .task = &tsk, \ - .flags = 0, \ - .cpu = 0, \ - .preempt_count = INIT_PREEMPT_COUNT, \ - .addr_limit = KERNEL_DS, \ -} - -/* how to get the current stack pointer from C */ -register unsigned long current_stack_pointer asm("A0StP") __used; - -/* how to get the thread information struct from C */ -static inline struct thread_info *current_thread_info(void) -{ - return (struct thread_info *)(current_stack_pointer & - ~(THREAD_SIZE - 1)); -} - -#define __HAVE_ARCH_KSTACK_END -static inline int kstack_end(void *addr) -{ - return addr == (void *) (((unsigned long) addr & ~(THREAD_SIZE - 1)) - + sizeof(struct thread_info)); -} - -#endif - -/* - * thread information flags - * - these are process state flags that various assembly files may need to - * access - * - pending work-to-be-done flags are in LSW - * - other flags in MSW - */ -#define TIF_SYSCALL_TRACE 0 /* syscall trace active */ -#define TIF_SIGPENDING 1 /* signal pending */ -#define TIF_NEED_RESCHED 2 /* rescheduling necessary */ -#define TIF_SINGLESTEP 3 /* restore singlestep on return to user - mode */ -#define TIF_SYSCALL_AUDIT 4 /* syscall auditing active */ -#define TIF_SECCOMP 5 /* secure computing */ -#define TIF_RESTORE_SIGMASK 6 /* restore signal mask in do_signal() */ -#define TIF_NOTIFY_RESUME 7 /* callback before returning to user */ -#define TIF_MEMDIE 8 /* is terminating due to OOM killer */ -#define TIF_SYSCALL_TRACEPOINT 9 /* syscall tracepoint instrumentation */ - - -#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE) -#define _TIF_SIGPENDING (1<<TIF_SIGPENDING) -#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED) -#define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP) -#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT) -#define _TIF_SECCOMP (1<<TIF_SECCOMP) -#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME) -#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK) -#define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT) - -/* work to do in syscall trace */ -#define _TIF_WORK_SYSCALL_MASK (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | \ - _TIF_SYSCALL_AUDIT | _TIF_SECCOMP | \ - _TIF_SYSCALL_TRACEPOINT) - -/* work to do on any return to u-space */ -#define _TIF_ALLWORK_MASK (_TIF_SYSCALL_TRACE | _TIF_SIGPENDING | \ - _TIF_NEED_RESCHED | _TIF_SYSCALL_AUDIT | \ - _TIF_SINGLESTEP | _TIF_RESTORE_SIGMASK | \ - _TIF_NOTIFY_RESUME) - -/* work to do on interrupt/exception return */ -#define _TIF_WORK_MASK (_TIF_ALLWORK_MASK & ~(_TIF_SYSCALL_TRACE | \ - _TIF_SYSCALL_AUDIT | _TIF_SINGLESTEP)) - -#endif /* _ASM_THREAD_INFO_H */ |