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authorAnton Blanchard <anton@samba.org>2013-08-07 02:01:48 +1000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-08-14 15:33:37 +1000
commit0654de1cd744a86e19e0a5afb75e3c23571093e6 (patch)
tree4852372290b17c0ef00fede12076b6ce71b59be1 /arch/powerpc
parent4288e343fb63cd74b35bf68c5d83551f867dba56 (diff)
downloadop-kernel-dev-0654de1cd744a86e19e0a5afb75e3c23571093e6.zip
op-kernel-dev-0654de1cd744a86e19e0a5afb75e3c23571093e6.tar.gz
powerpc: Little endian SMP IPI demux
Add little endian support for demuxing SMP IPIs Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kernel/smp.c19
1 files changed, 10 insertions, 9 deletions
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index d9d8bb0..442d8e2 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;
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