powerpc: Remove call sites of MSG_ALL_BUT_SELF

The only user of MSG_ALL_BUT_SELF in the whole kernel tree is powerpc,
and it only uses it to start the debugger. Both debuggers always call
smp_send_debugger_break with MSG_ALL_BUT_SELF, and only mpic can do
anything more optimal than a loop over all online cpus, but all message
passing implementations have to code for this special delivery target.

Convert smp_send_debugger_break to take void and loop calling the smp_ops
message_pass function for each of the other cpus in the online cpumask.

Use raw_smp_processor_id() because we are either entering the debugger
or trying to start kdump and the additional warning it not useful were
it to trigger.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 91309c5c00d7..42541bbcc7fa 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -437,7 +437,7 @@ static int xmon_core(struct pt_regs *regs, int fromipi)
                 xmon_owner = cpu;
                 mb();
                 if (ncpus > 1) {
-                        smp_send_debugger_break(MSG_ALL_BUT_SELF);
+                        smp_send_debugger_break();
                         /* wait for other cpus to come in */
                         for (timeout = 100000000; timeout != 0; --timeout) {
                                 if (cpumask_weight(&cpus_in_xmon) >= ncpus)