ARC: [optim] Cache "current" in Register r25

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/arch/arc/Makefile b/arch/arc/Makefile
index 29b5fcd9c4b6..5c98fc19d99d 100644
--- a/arch/arc/Makefile
+++ b/arch/arc/Makefile
@@ -20,6 +20,15 @@ export PLATFORM
 cflags-y        += -Iarch/arc/plat-$(PLATFORM)/include
 cflags-y        += -mA7 -fno-common -pipe -fno-builtin -D__linux__
 
+ifdef CONFIG_ARC_CURR_IN_REG
+# For a global register defintion, make sure it gets passed to every file
+# We had a customer reported bug where some code built in kernel was NOT using
+# any kernel headers, and missing the r25 global register
+# Can't do unconditionally (like above) because of recursive include issues
+# due to <linux/thread_info.h>
+LINUXINCLUDE    +=  -include ${src}/arch/arc/include/asm/current.h
+endif
+
 atleast_gcc44 :=  $(call cc-ifversion, -gt, 0402, y)
 cflags-$(atleast_gcc44)                 += -fsection-anchors