| Date | Thu, 01 Jul 2010 10:33:56 -0700 | From | Greg KH <> | Subject | [patch 050/164] drivers/base/cpu.c: fix the output from /sys/devices/system/cpu/offline |
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2.6.33-stable review patch. If anyone has any objections, please let me know.
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From: Jan Beulich <JBeulich@novell.com>
commit cdc6e3d3968052cebb2f2ddcd742bff29fbd1a90 upstream.
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: Jan Beulich <jbeulich@novell.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- drivers/base/cpu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c @@ -183,7 +183,7 @@ static ssize_t print_cpus_offline(struct /* 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);
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