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-rw-r--r--arch/s390/include/asm/thread_info.h109
1 files changed, 109 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..b2ffcb4fe
--- /dev/null
+++ b/arch/s390/include/asm/thread_info.h
@@ -0,0 +1,109 @@
+/* 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>
+
+/*
+ * 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)
+
+#ifndef __ASSEMBLY__
+#include <asm/lowcore.h>
+#include <asm/page.h>
+
+#define STACK_INIT_OFFSET \
+ (THREAD_SIZE - STACK_FRAME_OVERHEAD - sizeof(struct pt_regs))
+
+/*
+ * 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_release_task_struct(struct task_struct *tsk);
+int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src);
+
+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 8 /* Run process with isolated BP */
+#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 BIT(TIF_ISOLATE_BP)
+#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 */