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powerpc: Mask smp_processor_id() false positive 

The rtas_event_scan() function uses smp_processor_id() to select a
starting point in cpu_online_mask, and does so under the protection
of get_online_cpus().  This might not select the current processor
in any case, so switch to raw_smp_processor_id().

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
hifive-unleashed-5.1
Paul E. McKenney 2011-02-10 11:57:27 +00:00 committed by Benjamin Herrenschmidt
parent 31116f0b7e
commit 9ff0c61d08
1 changed files with 2 additions and 1 deletions
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3
arch/powerpc/kernel/rtasd.c
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@ -412,7 +412,8 @@ static void rtas_event_scan(struct work_struct *w)
get_online_cpus();
cpu = cpumask_next(smp_processor_id(), cpu_online_mask);
/* raw_ OK because just using CPU as starting point. */
cpu = cpumask_next(raw_smp_processor_id(), cpu_online_mask);
if (cpu >= nr_cpu_ids) {
cpu = cpumask_first(cpu_online_mask);