arch/tile: implement arch_ptrace using user_regset on tile

This patch changes arch_ptrace on tile so that it uses user_regset
to implement the PTRACE_GETREGS and PTRACE_SETREGS operations.

Signed-off-by: Simon Marchi <simon.marchi@polymtl.ca>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

1 files changed, 6 insertions, 9 deletions

diff --git a/arch/tile/kernel/ptrace.c b/arch/tile/kernel/ptrace.c
index 882e3816477..9835312d5a9 100644
--- a/arch/tile/kernel/ptrace.c
+++ b/arch/tile/kernel/ptrace.c
@@ -193,18 +193,15 @@ long arch_ptrace(struct task_struct *child, long request,
                 break;
 
         case PTRACE_GETREGS:  /* Get all registers from the child. */
-                if (copy_to_user(datap, getregs(child, &copyregs),
-                                 sizeof(struct pt_regs)) == 0) {
-                        ret = 0;
-                }
+                ret = copy_regset_to_user(child, &tile_user_regset_view,
+                                          REGSET_GPR, 0,
+                                          sizeof(struct pt_regs), datap);
                 break;
 
         case PTRACE_SETREGS:  /* Set all registers in the child. */
-                if (copy_from_user(&copyregs, datap,
-                                   sizeof(struct pt_regs)) == 0) {
-                        putregs(child, &copyregs);
-                        ret = 0;
-                }
+                ret = copy_regset_from_user(child, &tile_user_regset_view,
+                                            REGSET_GPR, 0,
+                                            sizeof(struct pt_regs), datap);
                 break;
 
         case PTRACE_GETFPREGS:  /* Get the child FPU state. */