sparc32: Implement smp_call_function_single().

[linux-2.6-omap-h63xx.git] / arch / sparc / kernel / sun4m_smp.c

diff --git a/arch/sparc/kernel/sun4m_smp.c b/arch/sparc/kernel/sun4m_smp.c
index 406ac1abc83a8645f559b435690b5f12594f6e5a..a14a76ac7f36464642ea95f397326c29d3967002 100644 (file)
--- a/arch/sparc/kernel/sun4m_smp.c
+++ b/arch/sparc/kernel/sun4m_smp.c
@@ -244,9 +244,9 @@ static struct smp_funcall {
 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 @@ static void smp4m_cross_call(smpfunc_t func, unsigned long arg1,
                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 @@ static void smp4m_cross_call(smpfunc_t func, unsigned long arg1,
 
                        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);