[PATCH 2/2] powerpc/shared: Use static key to detect shared processor

[Srikar Dronamraju]

With the static key shared processor available, is_shared_processor()
can return without having to query the lppaca structure.

Signed-off-by: Srikar Dronamraju <srikar at linux.vnet.ibm.com>
---
 arch/powerpc/include/asm/spinlock.h | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/include/asm/spinlock.h b/arch/powerpc/include/asm/spinlock.h
index 866f6ca0427a..699eb306a835 100644
--- a/arch/powerpc/include/asm/spinlock.h
+++ b/arch/powerpc/include/asm/spinlock.h
@@ -115,9 +115,8 @@ static inline bool is_shared_processor(void)
  * LPPACA is only available on Pseries so guard anything LPPACA related to
  * allow other platforms (which include this common header) to compile.
  */
-#ifdef CONFIG_PPC_PSERIES
-	return (IS_ENABLED(CONFIG_PPC_SPLPAR) &&
-		lppaca_shared_proc(local_paca->lppaca_ptr));
+#if defined(CONFIG_PPC_PSERIES) && defined(CONFIG_PPC_SPLPAR)
+	return static_branch_unlikely(&shared_processor);
 #else
 	return false;
 #endif
-- 
2.18.1