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 */