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>
diff --git a/arch/blackfin/include/asm/context.S b/arch/blackfin/include/asm/context.S
index c0e630e..40d20b4 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
-