1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/proc.h b/kernel/proc.h
index d021857..4a2ca6c 100644
--- a/kernel/proc.h
+++ b/kernel/proc.h
@@ -91,6 +91,7 @@ struct proc {
   int killed;                  // If non-zero, have been killed
   int xstate;                  // Exit status to be returned to parent's wait
   int pid;                     // Process ID
+  int trace_mask;              // SYS_trace mask (1 << SYS_xxx)
 
   // wait_lock must be held when using this:
   struct proc *parent;         // Parent process