MN10300: Make the FPU operate in non-lazy mode under SMP

Make the FPU operate in non-lazy mode under SMP so that when the process that
is currently using the FPU migrates to a different CPU, we don't have to ping
its previous CPU to flush the FPU context.

Signed-off-by: Akira Takeuchi <takeuchi.akr@jp.panasonic.com>
Signed-off-by: Kiyoshi Owada <owada.kiyoshi@jp.panasonic.com>
Signed-off-by: David Howells <dhowells@redhat.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/arch/mn10300/kernel/asm-offsets.c b/arch/mn10300/kernel/asm-offsets.c
index 02dc7e461fef..78e290e342fc 100644
--- a/arch/mn10300/kernel/asm-offsets.c
+++ b/arch/mn10300/kernel/asm-offsets.c
@@ -67,6 +67,15 @@ void foo(void)
         OFFSET(THREAD_A3,               thread_struct, a3);
         OFFSET(THREAD_USP,              thread_struct, usp);
         OFFSET(THREAD_FRAME,            thread_struct, __frame);
+#ifdef CONFIG_FPU
+        OFFSET(THREAD_FPU_FLAGS,        thread_struct, fpu_flags);
+        OFFSET(THREAD_FPU_STATE,        thread_struct, fpu_state);
+        DEFINE(__THREAD_USING_FPU,      THREAD_USING_FPU);
+        DEFINE(__THREAD_HAS_FPU,        THREAD_HAS_FPU);
+#endif /* CONFIG_FPU */
+        BLANK();
+
+        OFFSET(TASK_THREAD,             task_struct, thread);
         BLANK();
 
         DEFINE(CLONE_VM_asm,            CLONE_VM);