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, 1 insertions, 0 deletions

diff --git a/arch/mn10300/include/asm/processor.h b/arch/mn10300/include/asm/processor.h
index fd96c180e649..0032fc76c8ba 100644
--- a/arch/mn10300/include/asm/processor.h
+++ b/arch/mn10300/include/asm/processor.h
@@ -95,6 +95,7 @@ struct thread_struct {
         struct pt_regs          *__frame;
         unsigned long           fpu_flags;
 #define THREAD_USING_FPU        0x00000001      /* T if this task is using the FPU */
+#define THREAD_HAS_FPU          0x00000002      /* T if this task owns the FPU right now */
         struct fpu_state_struct fpu_state;
 };