powerpc: Make powerpc_firmware_features __read_mostly

We use firmware_has_feature quite a lot these days, so it's worth putting
powerpc_firmware_features into __read_mostly.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/kernel/firmware.c b/arch/powerpc/kernel/firmware.c
index 1679a70bbcad7e6bfe2370c142c2bd9b33688db5..6b1f4271eb5366a4ce8855b2a1b55ebfd46a4631 100644 (file)
--- a/arch/powerpc/kernel/firmware.c
+++ b/arch/powerpc/kernel/firmware.c
@@ -17,5 +17,5 @@
 
 #include <asm/firmware.h>
 
-unsigned long powerpc_firmware_features;
+unsigned long powerpc_firmware_features __read_mostly;
 EXPORT_SYMBOL_GPL(powerpc_firmware_features);