ppc: Minor smp changes for consistency with ppc64

This makes platform code use the smp_ops variable directly instead
of ppc_md.smp_ops, removes the two unused `data' and `wait' arguments
from the *_message_pass() functions, and removes the call to the
never-implemented smp_ops->space_timers() function.

Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/platforms/powermac/setup.c

@@ -312,9 +312,9 @@ pmac_setup_arch(void)
 #ifdef CONFIG_SMP
 	/* Check for Core99 */
 	if (find_devices("uni-n") || find_devices("u3"))
-		ppc_md.smp_ops = &core99_smp_ops;
+		smp_ops = &core99_smp_ops;
 	else
-		ppc_md.smp_ops = &psurge_smp_ops;
+		smp_ops = &psurge_smp_ops;
 #endif /* CONFIG_SMP */
 
 	pci_create_OF_bus_map();

arch/powerpc/platforms/powermac/smp.c

@@ -209,8 +209,7 @@ irqreturn_t psurge_primary_intr(int irq, void *d, struct pt_regs *regs)
 	return IRQ_HANDLED;
 }
 
-static void smp_psurge_message_pass(int target, int msg, unsigned long data,
+static void smp_psurge_message_pass(int target, int msg)
-					   int wait)
 {
 	int i;
 
@@ -627,7 +626,7 @@ void smp_core99_give_timebase(void)
 	local_irq_restore(flags);
 }
 
-void smp_core99_message_pass(int target, int msg, unsigned long data, int wait)
+void smp_core99_message_pass(int target, int msg)
 {
 	cpumask_t mask = CPU_MASK_ALL;
 	/* make sure we're sending something that translates to an IPI */

arch/ppc/kernel/smp.c

@@ -51,7 +51,7 @@ EXPORT_SYMBOL(cpu_online_map);
 EXPORT_SYMBOL(cpu_possible_map);
 
 /* SMP operations for this machine */
-static struct smp_ops_t *smp_ops;
+struct smp_ops_t *smp_ops;
 
 /* all cpu mappings are 1-1 -- Cort */
 volatile unsigned long cpu_callin_map[NR_CPUS];
@@ -74,11 +74,11 @@ extern void __save_cpu_setup(void);
 #define PPC_MSG_XMON_BREAK	3
 
 static inline void
-smp_message_pass(int target, int msg, unsigned long data, int wait)
+smp_message_pass(int target, int msg)
 {
-	if (smp_ops){
+	if (smp_ops) {
 		atomic_inc(&ipi_sent);
-		smp_ops->message_pass(target,msg,data,wait);
+		smp_ops->message_pass(target, msg);
 	}
 }
 
@@ -119,7 +119,7 @@ void smp_message_recv(int msg, struct pt_regs *regs)
 void smp_send_tlb_invalidate(int cpu)
 {
 	if ( PVR_VER(mfspr(SPRN_PVR)) == 8 )
-		smp_message_pass(MSG_ALL_BUT_SELF, PPC_MSG_INVALIDATE_TLB, 0, 0);
+		smp_message_pass(MSG_ALL_BUT_SELF, PPC_MSG_INVALIDATE_TLB);
 }
 
 void smp_send_reschedule(int cpu)
@@ -135,13 +135,13 @@ void smp_send_reschedule(int cpu)
 	 */
 	/* This is only used if `cpu' is running an idle task,
 	   so it will reschedule itself anyway... */
-	smp_message_pass(cpu, PPC_MSG_RESCHEDULE, 0, 0);
+	smp_message_pass(cpu, PPC_MSG_RESCHEDULE);
 }
 
 #ifdef CONFIG_XMON
 void smp_send_xmon_break(int cpu)
 {
-	smp_message_pass(cpu, PPC_MSG_XMON_BREAK, 0, 0);
+	smp_message_pass(cpu, PPC_MSG_XMON_BREAK);
 }
 #endif /* CONFIG_XMON */
 
@@ -224,7 +224,7 @@ static int __smp_call_function(void (*func) (void *info), void *info,
 	spin_lock(&call_lock);
 	call_data = &data;
 	/* Send a message to all other CPUs and wait for them to respond */
-	smp_message_pass(target, PPC_MSG_CALL_FUNCTION, 0, 0);
+	smp_message_pass(target, PPC_MSG_CALL_FUNCTION);
 
 	/* Wait for response */
 	timeout = 1000000;
@@ -294,7 +294,6 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
         smp_store_cpu_info(smp_processor_id());
 	cpu_callin_map[smp_processor_id()] = 1;
 
-	smp_ops = ppc_md.smp_ops;
 	if (smp_ops == NULL) {
 		printk("SMP not supported on this machine.\n");
 		return;
@@ -308,9 +307,6 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 	/* Backup CPU 0 state */
 	__save_cpu_setup();
 
-	if (smp_ops->space_timers)
-		smp_ops->space_timers(num_cpus);
-
 	for_each_cpu(cpu) {
 		if (cpu == smp_processor_id())
 			continue;

arch/ppc/platforms/chrp_setup.c

@@ -553,7 +553,7 @@ chrp_init(unsigned long r3, unsigned long r4, unsigned long r5,
 #endif
 
 #ifdef CONFIG_SMP
-	ppc_md.smp_ops = &chrp_smp_ops;
+	smp_ops = &chrp_smp_ops;
 #endif /* CONFIG_SMP */
 
 	/*

arch/ppc/platforms/gemini_setup.c

@@ -575,6 +575,6 @@ void __init platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 	ppc_md.pcibios_fixup_bus = gemini_pcibios_fixup;
 
 #ifdef CONFIG_SMP
-	ppc_md.smp_ops = &gemini_smp_ops;
+	smp_ops = &gemini_smp_ops;
 #endif /* CONFIG_SMP */
 }

arch/ppc/platforms/hdpu.c

@@ -753,7 +753,7 @@ static int smp_hdpu_probe(void)
 }
 
 static void
-smp_hdpu_message_pass(int target, int msg, unsigned long data, int wait)
+smp_hdpu_message_pass(int target, int msg)
 {
 	if (msg > 0x3) {
 		printk("SMP %d: smp_message_pass: unknown msg %d\n",
@@ -949,7 +949,7 @@ platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 #endif				/* CONFIG_SERIAL_TEXT_DEBUG */
 
 #ifdef CONFIG_SMP
-	ppc_md.smp_ops = &hdpu_smp_ops;
+	smp_ops = &hdpu_smp_ops;
 #endif				/* CONFIG_SMP */
 
 #if defined(CONFIG_SERIAL_MPSC) || defined(CONFIG_MV643XX_ETH)

arch/ppc/platforms/pmac_setup.c

@@ -330,9 +330,9 @@ pmac_setup_arch(void)
 #ifdef CONFIG_SMP
 	/* Check for Core99 */
 	if (find_devices("uni-n") || find_devices("u3"))
-		ppc_md.smp_ops = &core99_smp_ops;
+		smp_ops = &core99_smp_ops;
 	else
-		ppc_md.smp_ops = &psurge_smp_ops;
+		smp_ops = &psurge_smp_ops;
 #endif /* CONFIG_SMP */
 
 	pci_create_OF_bus_map();

arch/ppc/platforms/pmac_smp.c

@@ -209,8 +209,7 @@ irqreturn_t psurge_primary_intr(int irq, void *d, struct pt_regs *regs)
 	return IRQ_HANDLED;
 }
 
-static void smp_psurge_message_pass(int target, int msg, unsigned long data,
+static void smp_psurge_message_pass(int target, int msg)
-					   int wait)
 {
 	int i;
 

arch/ppc/platforms/pplus.c

@@ -903,6 +903,6 @@ platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 	ppc_md.kgdb_map_scc = gen550_kgdb_map_scc;
 #endif
 #ifdef CONFIG_SMP
-	ppc_md.smp_ops = &pplus_smp_ops;
+	smp_ops = &pplus_smp_ops;
 #endif				/* CONFIG_SMP */
 }

arch/ppc/platforms/prep_setup.c

@@ -1160,6 +1160,6 @@ prep_init(unsigned long r3, unsigned long r4, unsigned long r5,
 #endif
 
 #ifdef CONFIG_SMP
-	ppc_md.smp_ops		 = &prep_smp_ops;
+	smp_ops			 = &prep_smp_ops;
 #endif /* CONFIG_SMP */
 }

arch/ppc/syslib/open_pic.c

@@ -890,7 +890,7 @@ openpic_get_irq(struct pt_regs *regs)
 
 #ifdef CONFIG_SMP
 void
-smp_openpic_message_pass(int target, int msg, unsigned long data, int wait)
+smp_openpic_message_pass(int target, int msg)
 {
 	cpumask_t mask = CPU_MASK_ALL;
 	/* make sure we're sending something that translates to an IPI */