From 0654de1cd744a86e19e0a5afb75e3c23571093e6 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Wed, 7 Aug 2013 02:01:48 +1000 Subject: [PATCH] powerpc: Little endian SMP IPI demux Add little endian support for demuxing SMP IPIs Signed-off-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt --- 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 d9d8bb0f4454..442d8e23f8f4 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -232,6 +232,12 @@ 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); @@ -241,19 +247,14 @@ 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; -- 2.20.1