powerpc: Implement task_pt_regs() accessor
The task_pt_regs() macro allows access to the pt_regs of a given task.
This macro is not currently defined for the powerpc architecture, but
we need it for some upcoming utrace additions.
Signed-off-by: Srinivasa DS <srinivasa@in.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/include/asm-powerpc/processor.h b/include/asm-powerpc/processor.h
index 061cd17..101ed87 100644
--- a/include/asm-powerpc/processor.h
+++ b/include/asm-powerpc/processor.h
@@ -234,6 +234,8 @@
#define thread_saved_pc(tsk) \
((tsk)->thread.regs? (tsk)->thread.regs->nip: 0)
+#define task_pt_regs(tsk) ((struct pt_regs *)(tsk)->thread.regs)
+
unsigned long get_wchan(struct task_struct *p);
#define KSTK_EIP(tsk) ((tsk)->thread.regs? (tsk)->thread.regs->nip: 0)