diff options
Diffstat (limited to 'arch/arc/include/asm/thread_info.h')
| -rw-r--r-- | arch/arc/include/asm/thread_info.h | 53 |
1 files changed, 19 insertions, 34 deletions
diff --git a/arch/arc/include/asm/thread_info.h b/arch/arc/include/asm/thread_info.h index 2d50a4cdd7f3..255d2c774219 100644 --- a/arch/arc/include/asm/thread_info.h +++ b/arch/arc/include/asm/thread_info.h @@ -1,10 +1,7 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * Vineetg: Oct 2009 * No need for ARC specific thread_info allocator (kmalloc/free). This is * anyways one page allocation, thus slab alloc can be short-circuited and @@ -16,8 +13,6 @@ #ifndef _ASM_THREAD_INFO_H #define _ASM_THREAD_INFO_H -#ifdef __KERNEL__ - #include <asm/page.h> #ifdef CONFIG_16KSTACKS @@ -27,11 +22,11 @@ #endif #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) +#define THREAD_SHIFT (PAGE_SHIFT << THREAD_SIZE_ORDER) -#ifndef __ASSEMBLY__ +#ifndef __ASSEMBLER__ #include <linux/thread_info.h> -#include <asm/segment.h> /* * low level task data that entry.S needs immediate access to @@ -42,45 +37,32 @@ */ struct thread_info { unsigned long flags; /* low level flags */ - int preempt_count; /* 0 => preemptable, <0 => BUG */ - struct task_struct *task; /* main task structure */ - mm_segment_t addr_limit; /* thread address space */ - struct exec_domain *exec_domain;/* execution domain */ - __u32 cpu; /* current CPU */ + unsigned long ksp; /* kernel mode stack top in __switch_to */ + int preempt_count; /* 0 => preemptible, <0 => BUG */ + int cpu; /* current CPU */ unsigned long thr_ptr; /* TLS ptr */ - struct restart_block restart_block; + struct task_struct *task; /* main task structure */ }; /* - * macros/functions for gaining access to the thread information structure - * - * preempt_count needs to be 1 initially, until the scheduler is functional. + * initilaize thread_info for any @tsk + * - this is not related to init_task per se */ #define INIT_THREAD_INFO(tsk) \ { \ .task = &tsk, \ - .exec_domain = &default_exec_domain, \ .flags = 0, \ .cpu = 0, \ .preempt_count = INIT_PREEMPT_COUNT, \ - .addr_limit = KERNEL_DS, \ - .restart_block = { \ - .fn = do_no_restart_syscall, \ - }, \ } -#define init_thread_info (init_thread_union.thread_info) -#define init_stack (init_thread_union.stack) - static inline __attribute_const__ struct thread_info *current_thread_info(void) { register unsigned long sp asm("sp"); return (struct thread_info *)(sp & ~(THREAD_SIZE - 1)); } -#endif /* !__ASSEMBLY__ */ - -#define PREEMPT_ACTIVE 0x10000000 +#endif /* !__ASSEMBLER__ */ /* * thread information flags @@ -94,28 +76,31 @@ static inline __attribute_const__ struct thread_info *current_thread_info(void) #define TIF_SIGPENDING 2 /* signal pending */ #define TIF_NEED_RESCHED 3 /* rescheduling necessary */ #define TIF_SYSCALL_AUDIT 4 /* syscall auditing active */ +#define TIF_NOTIFY_SIGNAL 5 /* signal notifications exist */ #define TIF_SYSCALL_TRACE 15 /* syscall trace active */ - /* true if poll_idle() is polling TIF_NEED_RESCHED */ #define TIF_MEMDIE 16 +#define TIF_SYSCALL_TRACEPOINT 17 /* syscall tracepoint instrumentation */ #define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE) #define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME) #define _TIF_SIGPENDING (1<<TIF_SIGPENDING) #define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED) #define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT) +#define _TIF_NOTIFY_SIGNAL (1<<TIF_NOTIFY_SIGNAL) #define _TIF_MEMDIE (1<<TIF_MEMDIE) +#define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT) /* work to do on interrupt/exception return */ #define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \ - _TIF_NOTIFY_RESUME) + _TIF_NOTIFY_RESUME | _TIF_NOTIFY_SIGNAL) + +#define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_TRACEPOINT) /* * _TIF_ALLWORK_MASK includes SYSCALL_TRACE, but we don't need it. - * SYSCALL_TRACE is anways seperately/unconditionally tested right after a - * syscall, so all that reamins to be tested is _TIF_WORK_MASK + * SYSCALL_TRACE is anyway separately/unconditionally tested right after a + * syscall, so all that remains to be tested is _TIF_WORK_MASK */ -#endif /* __KERNEL__ */ - #endif /* _ASM_THREAD_INFO_H */ |