Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / mips / include / asm / jump_label.h

diff --git a/kernel/arch/mips/include/asm/jump_label.h b/kernel/arch/mips/include/asm/jump_label.h
new file mode 100644 (file)
index 0000000..608aa57
--- /dev/null
+++ b/kernel/arch/mips/include/asm/jump_label.h
@@ -0,0 +1,55 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (c) 2010 Cavium Networks, Inc.
+ */
+#ifndef _ASM_MIPS_JUMP_LABEL_H
+#define _ASM_MIPS_JUMP_LABEL_H
+
+#ifndef __ASSEMBLY__
+
+#include <linux/types.h>
+
+#define JUMP_LABEL_NOP_SIZE 4
+
+#ifdef CONFIG_64BIT
+#define WORD_INSN ".dword"
+#else
+#define WORD_INSN ".word"
+#endif
+
+#ifdef CONFIG_CPU_MICROMIPS
+#define NOP_INSN "nop32"
+#else
+#define NOP_INSN "nop"
+#endif
+
+static __always_inline bool arch_static_branch(struct static_key *key)
+{
+       asm_volatile_goto("1:\t" NOP_INSN "\n\t"
+               "nop\n\t"
+               ".pushsection __jump_table,  \"aw\"\n\t"
+               WORD_INSN " 1b, %l[l_yes], %0\n\t"
+               ".popsection\n\t"
+               : :  "i" (key) : : l_yes);
+       return false;
+l_yes:
+       return true;
+}
+
+#ifdef CONFIG_64BIT
+typedef u64 jump_label_t;
+#else
+typedef u32 jump_label_t;
+#endif
+
+struct jump_entry {
+       jump_label_t code;
+       jump_label_t target;
+       jump_label_t key;
+};
+
+#endif  /* __ASSEMBLY__ */
+#endif /* _ASM_MIPS_JUMP_LABEL_H */