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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/sh/include/asm/segment.h
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/sh/include/asm/segment.h')
-rw-r--r--kernel/arch/sh/include/asm/segment.h34
1 files changed, 34 insertions, 0 deletions
diff --git a/kernel/arch/sh/include/asm/segment.h b/kernel/arch/sh/include/asm/segment.h
new file mode 100644
index 000000000..ff795d3a6
--- /dev/null
+++ b/kernel/arch/sh/include/asm/segment.h
@@ -0,0 +1,34 @@
+#ifndef __ASM_SH_SEGMENT_H
+#define __ASM_SH_SEGMENT_H
+
+#ifndef __ASSEMBLY__
+
+typedef struct {
+ unsigned long seg;
+} mm_segment_t;
+
+#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
+
+/*
+ * The fs value determines whether argument validity checking should be
+ * performed or not. If get_fs() == USER_DS, checking is performed, with
+ * get_fs() == KERNEL_DS, checking is bypassed.
+ *
+ * For historical reasons, these macros are grossly misnamed.
+ */
+#define KERNEL_DS MAKE_MM_SEG(0xFFFFFFFFUL)
+#ifdef CONFIG_MMU
+#define USER_DS MAKE_MM_SEG(PAGE_OFFSET)
+#else
+#define USER_DS KERNEL_DS
+#endif
+
+#define segment_eq(a, b) ((a).seg == (b).seg)
+
+#define get_ds() (KERNEL_DS)
+
+#define get_fs() (current_thread_info()->addr_limit)
+#define set_fs(x) (current_thread_info()->addr_limit = (x))
+
+#endif /* __ASSEMBLY__ */
+#endif /* __ASM_SH_SEGMENT_H */