Add little endian support for demuxing SMP IPIs
Signed-off-by: Anton Blanchard <an...@samba.org>
---
arch/powerpc/kernel/smp.c | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 98822400..bcdb706 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -210,6 +210,12 @@ void smp_muxed_ipi_message_pass(int cpu, int msg)
smp_ops->cause_ipi(cpu, info->data);
}
+#ifdef __BIG_ENDIAN__
+#define IPI_MESSAGE(A) (1 << (24 - 8 * (A)))
+#else
+#define IPI_MESSAGE(A) (1 << (8 * (A)))
+#endif
+
irqreturn_t smp_ipi_demux(void)
{
struct cpu_messages *info = &__get_cpu_var(ipi_message);
@@ -219,19 +225,14 @@ irqreturn_t smp_ipi_demux(void)
do {
all = xchg(&info->messages, 0);
-
-#ifdef __BIG_ENDIAN
- if (all & (1 << (24 - 8 * PPC_MSG_CALL_FUNCTION)))
+ if (all & IPI_MESSAGE(PPC_MSG_CALL_FUNCTION))
generic_smp_call_function_interrupt();
- if (all & (1 << (24 - 8 * PPC_MSG_RESCHEDULE)))
+ if (all & IPI_MESSAGE(PPC_MSG_RESCHEDULE))
scheduler_ipi();
- if (all & (1 << (24 - 8 * PPC_MSG_CALL_FUNC_SINGLE)))
+ if (all & IPI_MESSAGE(PPC_MSG_CALL_FUNC_SINGLE))
generic_smp_call_function_single_interrupt();
- if (all & (1 << (24 - 8 * PPC_MSG_DEBUGGER_BREAK)))
+ if (all & IPI_MESSAGE(PPC_MSG_DEBUGGER_BREAK))
debug_ipi_action(0, NULL);
-#else
-#error Unsupported ENDIAN
-#endif
} while (info->messages);
return IRQ_HANDLED;
--
1.8.1.2
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