Commit 8dd79cb1 authored May 15, 2008 by Heiko Carstens Committed by Martin Schwidefsky May 15, 2008

[S390] show_interrupts: prevent cpu hotplug when walking cpu_online_map.



Surround all the code withing show_interrupts() with
get/put_online_cpus() to prevent strange results wrt cpu hotplug.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

parent 85cb185d

arch/s390/kernel/irq.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -25,6 +25,7 @@ int show_interrupts(struct seq_file p, void v)
		static const char *intrclass_names[] = { "EXT", "I/O", };
		int i = (loff_t ) v, j;

		get_online_cpus();
		if (i == 0) {
		seq_puts(p, " ");
		for_each_online_cpu(j)
		@@ -43,7 +44,7 @@ int show_interrupts(struct seq_file p, void v)
		seq_putc(p, '\n');

		}

		put_online_cpus();
		return 0;
		}