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author | Robert Richter <robert.richter@amd.com> | 2010-10-15 12:45:00 +0200 |
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committer | Robert Richter <robert.richter@amd.com> | 2010-10-15 12:45:00 +0200 |
commit | 6268464b370e234e0255330190f9bd5d19386ad7 (patch) | |
tree | 5742641092ce64227dd2086d78baaede57da1f80 /arch/x86/include/asm/jump_label.h | |
parent | 7df01d96b295e400167e78061b81d4c91630b12d (diff) | |
parent | 0fdf13606b67f830559abdaad15980c7f4f05ec4 (diff) | |
download | kernel_samsung_aries-6268464b370e234e0255330190f9bd5d19386ad7.zip kernel_samsung_aries-6268464b370e234e0255330190f9bd5d19386ad7.tar.gz kernel_samsung_aries-6268464b370e234e0255330190f9bd5d19386ad7.tar.bz2 |
Merge remote branch 'tip/perf/core' into oprofile/core
Conflicts:
arch/arm/oprofile/common.c
kernel/perf_event.c
Diffstat (limited to 'arch/x86/include/asm/jump_label.h')
-rw-r--r-- | arch/x86/include/asm/jump_label.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/x86/include/asm/jump_label.h b/arch/x86/include/asm/jump_label.h new file mode 100644 index 0000000..f52d42e --- /dev/null +++ b/arch/x86/include/asm/jump_label.h @@ -0,0 +1,37 @@ +#ifndef _ASM_X86_JUMP_LABEL_H +#define _ASM_X86_JUMP_LABEL_H + +#ifdef __KERNEL__ + +#include <linux/types.h> +#include <asm/nops.h> + +#define JUMP_LABEL_NOP_SIZE 5 + +# define JUMP_LABEL_INITIAL_NOP ".byte 0xe9 \n\t .long 0\n\t" + +# define JUMP_LABEL(key, label) \ + do { \ + asm goto("1:" \ + JUMP_LABEL_INITIAL_NOP \ + ".pushsection __jump_table, \"a\" \n\t"\ + _ASM_PTR "1b, %l[" #label "], %c0 \n\t" \ + ".popsection \n\t" \ + : : "i" (key) : : label); \ + } while (0) + +#endif /* __KERNEL__ */ + +#ifdef CONFIG_X86_64 +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 |