Blackfin arch: SMP supporting patchset: Blackfin header files and machine common code

Blackfin dual core BF561 processor can support SMP like features.
https://docs.blackfin.uclinux.org/doku.php?id=linux-kernel:smp-like

In this patch, we provide SMP extend to Blackfin header files
and machine common code

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/arch/blackfin/include/asm/context.S b/arch/blackfin/include/asm/context.S
index c0e630edfb9..40d20b4a9b1 100644
--- a/arch/blackfin/include/asm/context.S
+++ b/arch/blackfin/include/asm/context.S
@@ -303,9 +303,14 @@
         RETI = [sp++];
         RETS = [sp++];
 
+#ifdef CONFIG_SMP
+        GET_PDA(p0, r0);
+        r0 = [p0 + PDA_IRQFLAGS];
+#else
         p0.h = _irq_flags;
         p0.l = _irq_flags;
         r0 = [p0];
+#endif
         sti r0;
 
         sp += 4;        /* Skip Reserved */
@@ -352,4 +357,3 @@
         SYSCFG = [sp++];
         csync;
 .endm
-