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 <paul...@linux.vnet.ibm.com>
---
arch/powerpc/kernel/rtasd.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/kernel/rtasd.c b/arch/powerpc/kernel/rtasd.c
index 049dbec..7980ec0 100644
--- a/arch/powerpc/kernel/rtasd.c
+++ b/arch/powerpc/kernel/rtasd.c
@@ -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);
--
1.7.3.2
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