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From: Bjorn Helgaas <bjorn_helgaas@hp.com>
To: Marcelo Tosatti <marcelo@conectiva.com.br>
Subject: [PATCH] Fix CPU bitmask truncation (2 of 2)
Date: Thu, 2 Jan 2003 12:15:06 -0700
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This does not make a functional difference, so ignore it if you
like.  Two reasons you might want it:

  1) It's in 2.5.x, so you might want it for consistency.
  2) Comments in sched.h refer to cpus_runnable being ~0
     if the process is not running on any CPU.

diff -Nru a/include/linux/sched.h b/include/linux/sched.h
--- a/include/linux/sched.h	Mon Dec 16 11:58:42 2002
+++ b/include/linux/sched.h	Mon Dec 16 11:58:42 2002
@@ -482,8 +482,8 @@
     policy:		SCHED_OTHER,					\
     mm:			NULL,						\
     active_mm:		&init_mm,					\
-    cpus_runnable:	-1,						\
-    cpus_allowed:	-1,						\
+    cpus_runnable:	~0UL,						\
+    cpus_allowed:	~0UL,						\
     run_list:		LIST_HEAD_INIT(tsk.run_list),			\
     next_task:		&tsk,						\
     prev_task:		&tsk,						\

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