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Diffstat (limited to 'arch/s390/include/asm/thread_info.h')
| -rw-r--r-- | arch/s390/include/asm/thread_info.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h new file mode 100644 index 000000000..a674c7d25 --- /dev/null +++ b/arch/s390/include/asm/thread_info.h @@ -0,0 +1,106 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * S390 version + * Copyright IBM Corp. 2002, 2006 + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + */ + +#ifndef _ASM_THREAD_INFO_H +#define _ASM_THREAD_INFO_H + +#include <linux/bits.h> +#ifndef ASM_OFFSETS_C +#include <asm/asm-offsets.h> +#endif + +/* + * General size of kernel stacks + */ +#ifdef CONFIG_KASAN +#define THREAD_SIZE_ORDER 4 +#else +#define THREAD_SIZE_ORDER 2 +#endif +#define BOOT_STACK_SIZE (PAGE_SIZE << 2) +#define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) + +#define STACK_INIT_OFFSET (THREAD_SIZE - STACK_FRAME_OVERHEAD - __PT_SIZE) + +#ifndef __ASSEMBLY__ +#include <asm/lowcore.h> +#include <asm/page.h> + +/* + * 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 + */ +struct thread_info { + unsigned long flags; /* low level flags */ + unsigned long syscall_work; /* SYSCALL_WORK_ flags */ + unsigned int cpu; /* current CPU */ +}; + +/* + * macros/functions for gaining access to the thread information structure + */ +#define INIT_THREAD_INFO(tsk) \ +{ \ + .flags = 0, \ +} + +struct task_struct; + +void arch_setup_new_exec(void); +#define arch_setup_new_exec arch_setup_new_exec + +#endif + +/* + * thread information flags bit numbers + */ +/* _TIF_WORK bits */ +#define TIF_NOTIFY_RESUME 0 /* callback before returning to user */ +#define TIF_SIGPENDING 1 /* signal pending */ +#define TIF_NEED_RESCHED 2 /* rescheduling necessary */ +#define TIF_UPROBE 3 /* breakpointed or single-stepping */ +#define TIF_GUARDED_STORAGE 4 /* load guarded storage control block */ +#define TIF_PATCH_PENDING 5 /* pending live patching update */ +#define TIF_PGSTE 6 /* New mm's will use 4K page tables */ +#define TIF_NOTIFY_SIGNAL 7 /* signal notifications exist */ +#define TIF_ISOLATE_BP_GUEST 9 /* Run KVM guests with isolated BP */ +#define TIF_PER_TRAP 10 /* Need to handle PER trap on exit to usermode */ + +#define TIF_31BIT 16 /* 32bit process */ +#define TIF_MEMDIE 17 /* is terminating due to OOM killer */ +#define TIF_RESTORE_SIGMASK 18 /* restore signal mask in do_signal() */ +#define TIF_SINGLE_STEP 19 /* This task is single stepped */ +#define TIF_BLOCK_STEP 20 /* This task is block stepped */ +#define TIF_UPROBE_SINGLESTEP 21 /* This task is uprobe single stepped */ + +/* _TIF_TRACE bits */ +#define TIF_SYSCALL_TRACE 24 /* syscall trace active */ +#define TIF_SYSCALL_AUDIT 25 /* syscall auditing active */ +#define TIF_SECCOMP 26 /* secure computing */ +#define TIF_SYSCALL_TRACEPOINT 27 /* syscall tracepoint instrumentation */ + +#define _TIF_NOTIFY_RESUME BIT(TIF_NOTIFY_RESUME) +#define _TIF_NOTIFY_SIGNAL BIT(TIF_NOTIFY_SIGNAL) +#define _TIF_SIGPENDING BIT(TIF_SIGPENDING) +#define _TIF_NEED_RESCHED BIT(TIF_NEED_RESCHED) +#define _TIF_UPROBE BIT(TIF_UPROBE) +#define _TIF_GUARDED_STORAGE BIT(TIF_GUARDED_STORAGE) +#define _TIF_PATCH_PENDING BIT(TIF_PATCH_PENDING) +#define _TIF_ISOLATE_BP_GUEST BIT(TIF_ISOLATE_BP_GUEST) +#define _TIF_PER_TRAP BIT(TIF_PER_TRAP) + +#define _TIF_31BIT BIT(TIF_31BIT) +#define _TIF_SINGLE_STEP BIT(TIF_SINGLE_STEP) + +#define _TIF_SYSCALL_TRACE BIT(TIF_SYSCALL_TRACE) +#define _TIF_SYSCALL_AUDIT BIT(TIF_SYSCALL_AUDIT) +#define _TIF_SECCOMP BIT(TIF_SECCOMP) +#define _TIF_SYSCALL_TRACEPOINT BIT(TIF_SYSCALL_TRACEPOINT) + +#endif /* _ASM_THREAD_INFO_H */ |