[POWERPC] kprobes: Eliminate sstep exception if instruction can be emulated

For cases when probes are placed on instructions that can be emulated,
don't take the single-step exception.

Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/asm-powerpc/kprobes.h b/include/asm-powerpc/kprobes.h
index 3a5dd492588f..f850ca7020ed 100644
--- a/include/asm-powerpc/kprobes.h
+++ b/include/asm-powerpc/kprobes.h
@@ -87,6 +87,11 @@ extern void arch_remove_kprobe(struct kprobe *p);
 struct arch_specific_insn {
         /* copy of original instruction */
         kprobe_opcode_t *insn;
+        /*
+         * Set in kprobes code, initially to 0. If the instruction can be
+         * eumulated, this is set to 1, if not, to -1.
+         */
+        int boostable;
 };
 
 struct prev_kprobe {