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Commit cdc6e3d3 authored by Jan Beulich's avatar Jan Beulich Committed by Greg Kroah-Hartman
Browse files

drivers/base/cpu.c: fix the output from /sys/devices/system/cpu/offline 



Without CONFIG_CPUMASK_OFFSTACK, simply inverting cpu_online_mask leads
to CPUs beyond nr_cpu_ids to be displayed twice and CPUs not even
possible to be displayed as offline.

Signed-off-by: default avatarJan Beulich <jbeulich@novell.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Cc: stable <stable@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent d7dbf4ff

drivers/base/cpu.c

+1 −1
Original line number Diff line number Diff line
@@ -186,7 +186,7 @@ static ssize_t print_cpus_offline(struct sysdev_class *class, 
	/* display offline cpus < nr_cpu_ids */

	if (!alloc_cpumask_var(&offline, GFP_KERNEL))

		return -ENOMEM;

	cpumask_complement(offline, cpu_online_mask);

	cpumask_andnot(offline, cpu_possible_mask, cpu_online_mask);

	n = cpulist_scnprintf(buf, len, offline);

	free_cpumask_var(offline);