commit 12fb288b309af44de0b6709d80d172be852368ad
Author: Vladimir Prus <vladimir@codesourcery.com>
Date:   Fri Jan 8 17:07:44 2010 +0300

    Fix issues preventing '-exec-run --all' from work.
    
    	* linux-nat.c (linux_nat_wait_1): When getting event in undesired
    	inferior, do not try to resume it and get SIGSTOP. In non-stop, do
    	not try to cancel breakpoints.

diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c
index bf0a5f1..682949d 100644
--- a/gdb/linux-nat.c
+++ b/gdb/linux-nat.c
@@ -3419,20 +3419,9 @@ retry:
 
 	      if (WIFSTOPPED (lp->status))
 		{
-		  if (WSTOPSIG (lp->status) != SIGSTOP)
-		    {
-		      stop_callback (lp, NULL);
-
-		      /* Resume in order to collect the sigstop.  */
-		      ptrace (PTRACE_CONT, GET_LWP (lp->ptid), 0, 0);
-
-		      stop_wait_callback (lp, NULL);
-		    }
-		  else
-		    {
-		      lp->stopped = 1;
-		      lp->signalled = 0;
-		    }
+		  lp->stopped = 1;
+		  if (WSTOPSIG (lp->status) == SIGSTOP)
+		    lp->signalled = 0;
 		}
 	      else if (WIFEXITED (status) || WIFSIGNALED (status))
 		{
@@ -3621,7 +3610,8 @@ retry:
   /* Now that we've selected our final event LWP, cancel any
      breakpoints in other LWPs that have hit a GDB breakpoint.  See
      the comment in cancel_breakpoints_callback to find out why.  */
-  iterate_over_lwps (minus_one_ptid, cancel_breakpoints_callback, lp);
+  if (!non_stop)
+    iterate_over_lwps (minus_one_ptid, cancel_breakpoints_callback, lp);
 
   if (WIFSTOPPED (status) && WSTOPSIG (status) == SIGTRAP)
     {