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* [uml-devel] Bug in for-each-cpu-akpm from incrementals
@ 2005-01-11  1:01 Blaisorblade
  2005-01-11  4:43 ` Jeff Dike
  2005-01-11 20:35 ` [uml-devel] " Jeff Dike
  0 siblings, 2 replies; 3+ messages in thread
From: Blaisorblade @ 2005-01-11  1:01 UTC (permalink / raw)
  To: Jeff Dike; +Cc: user-mode-linux-devel

You think that for_each_cpu() only iterates over online CPU, while you should 
use for_each_online_cpu() for this purpose.

http://user-mode-linux.sourceforge.net/work/current/2.6/2.6.10-mm2/patches/for-each-cpu-akpm

Bye
-- 
Paolo Giarrusso, aka Blaisorblade
Linux registered user n. 292729
http://www.user-mode-linux.org/~blaisorblade


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^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [uml-devel] Bug in for-each-cpu-akpm from incrementals
  2005-01-11  1:01 [uml-devel] Bug in for-each-cpu-akpm from incrementals Blaisorblade
@ 2005-01-11  4:43 ` Jeff Dike
  2005-01-11 20:35 ` [uml-devel] " Jeff Dike
  1 sibling, 0 replies; 3+ messages in thread
From: Jeff Dike @ 2005-01-11  4:43 UTC (permalink / raw)
  To: Blaisorblade; +Cc: user-mode-linux-devel

blaisorblade@yahoo.it said:
> You think that for_each_cpu() only iterates over online CPU, while you
> should  use for_each_online_cpu() for this purpose. 

Oops, correct.

		Jeff



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^ permalink raw reply	[flat|nested] 3+ messages in thread

* [uml-devel] Re: Bug in for-each-cpu-akpm from incrementals
  2005-01-11  1:01 [uml-devel] Bug in for-each-cpu-akpm from incrementals Blaisorblade
  2005-01-11  4:43 ` Jeff Dike
@ 2005-01-11 20:35 ` Jeff Dike
  1 sibling, 0 replies; 3+ messages in thread
From: Jeff Dike @ 2005-01-11 20:35 UTC (permalink / raw)
  To: Blaisorblade; +Cc: user-mode-linux-devel

blaisorblade@yahoo.it said:
> You think that for_each_cpu() only iterates over online CPU, while you
> should  use for_each_online_cpu() for this purpose. 

Fixed in my tree, but there was method to my madness.  I spotted this while
reading the 2.6.10 patch, which has this:

@@ -207,9 +212,8 @@ int show_interrupts(struct seq_file *p, 
 
 	if (i == 0) {
 		seq_printf(p, "           ");
-		for (j=0; j<NR_CPUS; j++)
-			if (cpu_online(j))
-				seq_printf(p, "CPU%d       ",j);
+		for_each_cpu(j)
+			seq_printf(p, "CPU%d       ",j);
 		seq_putc(p, '\n');
 	}
 
which would appear to be wrong as well.

				Jeff



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^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2005-01-11 18:14 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2005-01-11  1:01 [uml-devel] Bug in for-each-cpu-akpm from incrementals Blaisorblade
2005-01-11  4:43 ` Jeff Dike
2005-01-11 20:35 ` [uml-devel] " Jeff Dike

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