3 files changed, 9 insertions, 6 deletions

diff --git a/arch/tile/include/asm/ptrace.h b/arch/tile/include/asm/ptrace.h
index 1a4fd9ab0ee1..5ce052e16b7b 100644
--- a/arch/tile/include/asm/ptrace.h
+++ b/arch/tile/include/asm/ptrace.h
@@ -24,8 +24,7 @@ typedef unsigned long pt_reg_t;
 #include <uapi/asm/ptrace.h>
 
 #define PTRACE_O_MASK_TILE      (PTRACE_O_TRACEMIGRATE)
-#define PT_TRACE_MIGRATE        0x00080000
-#define PT_TRACE_MASK_TILE      (PT_TRACE_MIGRATE)
+#define PT_TRACE_MIGRATE        PT_EVENT_FLAG(PTRACE_EVENT_MIGRATE)
 
 /* Flag bits in pt_regs.flags */
 #define PT_FLAGS_DISABLE_IRQ    1  /* on return to kernel, disable irqs */
diff --git a/arch/tile/include/uapi/asm/ptrace.h b/arch/tile/include/uapi/asm/ptrace.h
index 0d2208803b29..7757e1985fb6 100644
--- a/arch/tile/include/uapi/asm/ptrace.h
+++ b/arch/tile/include/uapi/asm/ptrace.h
@@ -81,8 +81,8 @@ struct pt_regs {
 #define PTRACE_SETFPREGS        15
 
 /* Support TILE-specific ptrace options, with events starting at 16. */
-#define PTRACE_O_TRACEMIGRATE   0x00010000
 #define PTRACE_EVENT_MIGRATE    16
+#define PTRACE_O_TRACEMIGRATE   (1 << PTRACE_EVENT_MIGRATE)
 
 /*
  * Flag bits in pt_regs.flags that are part of the ptrace API.
diff --git a/arch/tile/kernel/ptrace.c b/arch/tile/kernel/ptrace.c
index 64ba102c5964..b32bc3f9d631 100644
--- a/arch/tile/kernel/ptrace.c
+++ b/arch/tile/kernel/ptrace.c
@@ -151,12 +151,16 @@ long arch_ptrace(struct task_struct *child, long request,
 
         case PTRACE_SETOPTIONS:
                 /* Support TILE-specific ptrace options. */
-                child->ptrace &= ~PT_TRACE_MASK_TILE;
+                BUILD_BUG_ON(PTRACE_O_MASK_TILE & PTRACE_O_MASK);
                 tmp = data & PTRACE_O_MASK_TILE;
                 data &= ~PTRACE_O_MASK_TILE;
                 ret = ptrace_request(child, request, addr, data);
-                if (tmp & PTRACE_O_TRACEMIGRATE)
-                        child->ptrace |= PT_TRACE_MIGRATE;
+                if (ret == 0) {
+                        unsigned int flags = child->ptrace;
+                        flags &= ~(PTRACE_O_MASK_TILE << PT_OPT_FLAG_SHIFT);
+                        flags |= (tmp << PT_OPT_FLAG_SHIFT);
+                        child->ptrace = flags;
+                }
                 break;
 
         default: