arch/arm/kernel/jump_label.c

   1 #include <linux/kernel.h>
   2 #include <linux/jump_label.h>
   3 #include <asm/patch.h>
   4 #include <asm/insn.h>
   5
   6 #ifdef HAVE_JUMP_LABEL
   7
   8 static void __arch_jump_label_transform(struct jump_entry *entry,
   9                                         enum jump_label_type type,
  10                                         bool is_static)
  11 {
  12         void *addr = (void *)entry->code;
  13         unsigned int insn;
  14
  15         if (type == JUMP_LABEL_ENABLE)
  16                 insn = arm_gen_branch(entry->code, entry->target);
  17         else
  18                 insn = arm_gen_nop();
  19
  20         if (is_static)
  21                 __patch_text_early(addr, insn);
  22         else
  23                 patch_text(addr, insn);
  24 }
  25
  26 void arch_jump_label_transform(struct jump_entry *entry,
  27                                enum jump_label_type type)
  28 {
  29         __arch_jump_label_transform(entry, type, false);
  30 }
  31
  32 void arch_jump_label_transform_static(struct jump_entry *entry,
  33                                       enum jump_label_type type)
  34 {
  35         __arch_jump_label_transform(entry, type, true);
  36 }
  37
  38 #endif