diff mbox

[powerpc,2/2] powerpc: mask smp_processor_id() false positive

Message ID 1297375047-18608-2-git-send-email-paulmck@linux.vnet.ibm.com (mailing list archive)
State Accepted, archived
Commit 9ff0c61d08ac4defa5ad6c65935a67643b8f4ce3
Delegated to: Benjamin Herrenschmidt
Headers show

Commit Message

Paul E. McKenney Feb. 10, 2011, 9:57 p.m. UTC 
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>
---
 arch/powerpc/kernel/rtasd.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
diff mbox

Patch

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);