sparc32: Implement smp_call_function_single().
Reported by Stephen Rothwell.
Needed to fix the build when CONFIG_RELAY is enabled.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/sun4m_smp.c b/arch/sparc/kernel/sun4m_smp.c
index 406ac1a..a14a76a 100644
--- a/arch/sparc/kernel/sun4m_smp.c
+++ b/arch/sparc/kernel/sun4m_smp.c
@@ -244,9 +244,9 @@
static DEFINE_SPINLOCK(cross_call_lock);
/* Cross calls must be serialized, at least currently. */
-static void smp4m_cross_call(smpfunc_t func, unsigned long arg1,
+static void smp4m_cross_call(smpfunc_t func, cpumask_t mask, unsigned long arg1,
unsigned long arg2, unsigned long arg3,
- unsigned long arg4, unsigned long arg5)
+ unsigned long arg4)
{
register int ncpus = SUN4M_NCPUS;
unsigned long flags;
@@ -259,14 +259,14 @@
ccall_info.arg2 = arg2;
ccall_info.arg3 = arg3;
ccall_info.arg4 = arg4;
- ccall_info.arg5 = arg5;
+ ccall_info.arg5 = 0;
/* Init receive/complete mapping, plus fire the IPI's off. */
{
- cpumask_t mask = cpu_online_map;
register int i;
cpu_clear(smp_processor_id(), mask);
+ cpus_and(mask, cpu_online_map, mask);
for(i = 0; i < ncpus; i++) {
if (cpu_isset(i, mask)) {
ccall_info.processors_in[i] = 0;
@@ -284,12 +284,16 @@
i = 0;
do {
+ if (!cpu_isset(i, mask))
+ continue;
while(!ccall_info.processors_in[i])
barrier();
} while(++i < ncpus);
i = 0;
do {
+ if (!cpu_isset(i, mask))
+ continue;
while(!ccall_info.processors_out[i])
barrier();
} while(++i < ncpus);
