From 871480933a1c28f8a9fed4c4d34d06c439a7a422 Mon Sep 17 00:00:00 2001 From: Srikant Patnaik Date: Sun, 11 Jan 2015 12:28:04 +0530 Subject: Moved, renamed, and deleted files The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure. --- arch/powerpc/include/asm/jump_label.h | 45 +++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 arch/powerpc/include/asm/jump_label.h (limited to 'arch/powerpc/include/asm/jump_label.h') diff --git a/arch/powerpc/include/asm/jump_label.h b/arch/powerpc/include/asm/jump_label.h new file mode 100644 index 00000000..ae098c43 --- /dev/null +++ b/arch/powerpc/include/asm/jump_label.h @@ -0,0 +1,45 @@ +#ifndef _ASM_POWERPC_JUMP_LABEL_H +#define _ASM_POWERPC_JUMP_LABEL_H + +/* + * Copyright 2010 Michael Ellerman, IBM Corp. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include + +#include + +#define JUMP_ENTRY_TYPE stringify_in_c(FTR_ENTRY_LONG) +#define JUMP_LABEL_NOP_SIZE 4 + +static __always_inline bool arch_static_branch(struct static_key *key) +{ + asm goto("1:\n\t" + "nop\n\t" + ".pushsection __jump_table, \"aw\"\n\t" + JUMP_ENTRY_TYPE "1b, %l[l_yes], %c0\n\t" + ".popsection \n\t" + : : "i" (key) : : l_yes); + return false; +l_yes: + return true; +} + +#ifdef CONFIG_PPC64 +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 /* _ASM_POWERPC_JUMP_LABEL_H */ -- cgit