Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6

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

diff --git a/arch/sparc/kernel/sun4m_smp.c b/arch/sparc/kernel/sun4m_smp.c
index 0b94072671623287c6c819fb4f405b18a0bb7038..a14a76ac7f36464642ea95f397326c29d3967002 100644 (file)
--- a/arch/sparc/kernel/sun4m_smp.c
+++ b/arch/sparc/kernel/sun4m_smp.c
@@ -34,8 +34,6 @@
 
 #include "irq.h"
 
-#define IRQ_RESCHEDULE         13
-#define IRQ_STOP_CPU           14
 #define IRQ_CROSS_CALL         15
 
 extern ctxd_t *srmmu_ctx_table_phys;
@@ -232,48 +230,6 @@ void smp4m_irq_rotate(int cpu)
                set_irq_udt(next);
 }
 
-/* Cross calls, in order to work efficiently and atomically do all
- * the message passing work themselves, only stopcpu and reschedule
- * messages come through here.
- */
-void smp4m_message_pass(int target, int msg, unsigned long data, int wait)
-{
-       static unsigned long smp_cpu_in_msg[NR_CPUS];
-       cpumask_t mask;
-       int me = smp_processor_id();
-       int irq, i;
-
-       if(msg == MSG_RESCHEDULE) {
-               irq = IRQ_RESCHEDULE;
-
-               if(smp_cpu_in_msg[me])
-                       return;
-       } else if(msg == MSG_STOP_CPU) {
-               irq = IRQ_STOP_CPU;
-       } else {
-               goto barf;
-       }
-
-       smp_cpu_in_msg[me]++;
-       if(target == MSG_ALL_BUT_SELF || target == MSG_ALL) {
-               mask = cpu_online_map;
-               if(target == MSG_ALL_BUT_SELF)
-                       cpu_clear(me, mask);
-               for(i = 0; i < 4; i++) {
-                       if (cpu_isset(i, mask))
-                               set_cpu_int(i, irq);
-               }
-       } else {
-               set_cpu_int(target, irq);
-       }
-       smp_cpu_in_msg[me]--;
-
-       return;
-barf:
-       printk("Yeeee, trying to send SMP msg(%d) on cpu %d\n", msg, me);
-       panic("Bogon SMP message pass.");
-}
-
 static struct smp_funcall {
        smpfunc_t func;
        unsigned long arg1;
@@ -288,8 +244,9 @@ static struct smp_funcall {
 static DEFINE_SPINLOCK(cross_call_lock);
 
 /* Cross calls must be serialized, at least currently. */
-void smp4m_cross_call(smpfunc_t func, unsigned long arg1, unsigned long arg2,
-                   unsigned long arg3, unsigned long arg4, unsigned long arg5)
+static void smp4m_cross_call(smpfunc_t func, cpumask_t mask, unsigned long arg1,
+                            unsigned long arg2, unsigned long arg3,
+                            unsigned long arg4)
 {
                register int ncpus = SUN4M_NCPUS;
                unsigned long flags;
@@ -302,14 +259,14 @@ void smp4m_cross_call(smpfunc_t func, unsigned long arg1, unsigned long arg2,
                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;
@@ -327,12 +284,16 @@ void smp4m_cross_call(smpfunc_t func, unsigned long arg1, unsigned long arg2,
 
                        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);
@@ -388,7 +349,7 @@ static void __init smp_setup_percpu_timer(void)
                enable_pil_irq(14);
 }
 
-void __init smp4m_blackbox_id(unsigned *addr)
+static void __init smp4m_blackbox_id(unsigned *addr)
 {
        int rd = *addr & 0x3e000000;
        int rs1 = rd >> 11;
@@ -398,7 +359,7 @@ void __init smp4m_blackbox_id(unsigned *addr)
        addr[2] = 0x80082003 | rd | rs1;        /* and reg, 3, reg */
 }
 
-void __init smp4m_blackbox_current(unsigned *addr)
+static void __init smp4m_blackbox_current(unsigned *addr)
 {
        int rd = *addr & 0x3e000000;
        int rs1 = rd >> 11;
@@ -413,6 +374,5 @@ void __init sun4m_init_smp(void)
        BTFIXUPSET_BLACKBOX(hard_smp_processor_id, smp4m_blackbox_id);
        BTFIXUPSET_BLACKBOX(load_current, smp4m_blackbox_current);
        BTFIXUPSET_CALL(smp_cross_call, smp4m_cross_call, BTFIXUPCALL_NORM);
-       BTFIXUPSET_CALL(smp_message_pass, smp4m_message_pass, BTFIXUPCALL_NORM);
        BTFIXUPSET_CALL(__hard_smp_processor_id, __smp4m_processor_id, BTFIXUPCALL_NORM);
 }