arch/powerpc/kernel/jump_label.c

   1 /*
   2  * Copyright 2010 Michael Ellerman, IBM Corp.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version
   7  * 2 of the License, or (at your option) any later version.
   8  */
   9
  10 #include <linux/kernel.h>
  11 #include <linux/jump_label.h>
  12 #include <asm/code-patching.h>
  13
  14 #ifdef HAVE_JUMP_LABEL
  15 void arch_jump_label_transform(struct jump_entry *entry,
  16                                enum jump_label_type type)
  17 {
  18         u32 *addr = (u32 *)(unsigned long)entry->code;
  19
  20         if (type == JUMP_LABEL_ENABLE)
  21                 patch_branch(addr, entry->target, 0);
  22         else
  23                 patch_instruction(addr, PPC_INST_NOP);
  24 }
  25 #endif