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powerpc: Little endian SMP IPI demux

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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>
This commit is contained in:
Anton Blanchard 2013-08-07 02:01:48 +10:00 committed by Benjamin Herrenschmidt
parent 4288e343fb
commit 0654de1cd7
1 changed files with 10 additions and 9 deletions
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19
arch/powerpc/kernel/smp.c
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@ -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;