/* * Copyright (C) 2009 Chen Liqin <liqin.chen@sunplusct.com> * Copyright (C) 2012 Regents of the University of California * Copyright (C) 2017 SiFive * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation, version 2. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #ifndef _ASM_RISCV_THREAD_INFO_H #define _ASM_RISCV_THREAD_INFO_H #include <asm/page.h> #include <linux/const.h> /* thread information allocation */ #define THREAD_SIZE_ORDER (1) #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) #ifndef __ASSEMBLY__ #include <asm/processor.h> #include <asm/csr.h> typedef unsigned long mm_segment_t; /* * low level task data that entry.S needs immediate access to * - this struct should fit entirely inside of one cache line * - if the members of this struct changes, the assembly constants * in asm-offsets.c must be updated accordingly * - thread_info is included in task_struct at an offset of 0. This means that * tp points to both thread_info and task_struct. */ struct thread_info { unsigned long flags; /* low level flags */ int preempt_count; /* 0=>preemptible, <0=>BUG */ mm_segment_t addr_limit; /* * These stack pointers are overwritten on every system call or * exception. SP is also saved to the stack it can be recovered when * overwritten. */ long kernel_sp; /* Kernel stack pointer */ long user_sp; /* User stack pointer */ int cpu; }; /* * macros/functions for gaining access to the thread information structure * * preempt_count needs to be 1 initially, until the scheduler is functional. */ #define INIT_THREAD_INFO(tsk) \ { \ .flags = 0, \ .preempt_count = INIT_PREEMPT_COUNT, \ .addr_limit = KERNEL_DS, \ } #define init_stack (init_thread_union.stack) #endif /* !__ASSEMBLY__ */ /* * thread information flags * - these are process state flags that various assembly files may need to * access * - pending work-to-be-done flags are in lowest half-word * - other flags in upper half-word(s) */ #define TIF_SYSCALL_TRACE 0 /* syscall trace active */ #define TIF_NOTIFY_RESUME 1 /* callback before returning to user */ #define TIF_SIGPENDING 2 /* signal pending */ #define TIF_NEED_RESCHED 3 /* rescheduling necessary */ #define TIF_RESTORE_SIGMASK 4 /* restore signal mask in do_signal() */ #define TIF_MEMDIE 5 /* is terminating due to OOM killer */ #define TIF_SYSCALL_TRACEPOINT 6 /* 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_WORK_MASK \ (_TIF_NOTIFY_RESUME | _TIF_SIGPENDING | _TIF_NEED_RESCHED) #endif /* _ASM_RISCV_THREAD_INFO_H */Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Palmer Dabbelt | 142 | 100.00% | 1 | 100.00% |
| Total | 142 | 100.00% | 1 | 100.00% |