From 8e4bff4cab0ddac6060645b0715210484d02ff40 Mon Sep 17 00:00:00 2001
From: Yuval Adam <_@yuv.al>
Date: Wed, 30 Aug 2017 08:25:59 +0000
Subject: Initial file dump from open source release

---
 arch/s390/include/asm/vdso.h | 46 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 arch/s390/include/asm/vdso.h

(limited to 'arch/s390/include/asm/vdso.h')

diff --git a/arch/s390/include/asm/vdso.h b/arch/s390/include/asm/vdso.h
new file mode 100644
index 00000000..a73eb2e1
--- /dev/null
+++ b/arch/s390/include/asm/vdso.h
@@ -0,0 +1,46 @@
+#ifndef __S390_VDSO_H__
+#define __S390_VDSO_H__
+
+/* Default link addresses for the vDSOs */
+#define VDSO32_LBASE	0
+#define VDSO64_LBASE	0
+
+#define VDSO_VERSION_STRING	LINUX_2.6.29
+
+#ifndef __ASSEMBLY__
+
+/*
+ * Note about the vdso_data and vdso_per_cpu_data structures:
+ *
+ * NEVER USE THEM IN USERSPACE CODE DIRECTLY. The layout of the
+ * structure is supposed to be known only to the function in the vdso
+ * itself and may change without notice.
+ */
+
+struct vdso_data {
+	__u64 tb_update_count;		/* Timebase atomicity ctr	0x00 */
+	__u64 xtime_tod_stamp;		/* TOD clock for xtime		0x08 */
+	__u64 xtime_clock_sec;		/* Kernel time			0x10 */
+	__u64 xtime_clock_nsec;		/*				0x18 */
+	__u64 wtom_clock_sec;		/* Wall to monotonic clock	0x20 */
+	__u64 wtom_clock_nsec;		/*				0x28 */
+	__u32 tz_minuteswest;		/* Minutes west of Greenwich	0x30 */
+	__u32 tz_dsttime;		/* Type of dst correction	0x34 */
+	__u32 ectg_available;
+	__u32 ntp_mult;			/* NTP adjusted multiplier	0x3C */
+};
+
+struct vdso_per_cpu_data {
+	__u64 ectg_timer_base;
+	__u64 ectg_user_time;
+};
+
+extern struct vdso_data *vdso_data;
+
+#ifdef CONFIG_64BIT
+int vdso_alloc_per_cpu(struct _lowcore *lowcore);
+void vdso_free_per_cpu(struct _lowcore *lowcore);
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __S390_VDSO_H__ */
-- 
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