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>

11 files changed, 22 insertions, 28 deletions

diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c
index 9416fcaa6daa..7eb0c34b6994 100644
--- a/arch/powerpc/platforms/powermac/setup.c
+++ b/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();
diff --git a/arch/powerpc/platforms/powermac/smp.c b/arch/powerpc/platforms/powermac/smp.c
index fb996336c58b..ccaa0534d60f 100644
--- a/arch/powerpc/platforms/powermac/smp.c
+++ b/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,
-                                           int wait)
+static void smp_psurge_message_pass(int target, int msg)
 {
         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 */
diff --git a/arch/ppc/kernel/smp.c b/arch/ppc/kernel/smp.c
index 801c793fdec8..bc5bf1124836 100644
--- a/arch/ppc/kernel/smp.c
+++ b/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;
diff --git a/arch/ppc/platforms/chrp_setup.c b/arch/ppc/platforms/chrp_setup.c
index 8c874e957a4b..56c53bb3dfd4 100644
--- a/arch/ppc/platforms/chrp_setup.c
+++ b/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 */
 
         /*
diff --git a/arch/ppc/platforms/gemini_setup.c b/arch/ppc/platforms/gemini_setup.c
index ec6aa04d001e..729897c59033 100644
--- a/arch/ppc/platforms/gemini_setup.c
+++ b/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 */
 }
diff --git a/arch/ppc/platforms/hdpu.c b/arch/ppc/platforms/hdpu.c
index ff3796860123..2cc12b04584a 100644
--- a/arch/ppc/platforms/hdpu.c
+++ b/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)
diff --git a/arch/ppc/platforms/pmac_setup.c b/arch/ppc/platforms/pmac_setup.c
index 74165684552a..55d2beffe560 100644
--- a/arch/ppc/platforms/pmac_setup.c
+++ b/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();
diff --git a/arch/ppc/platforms/pmac_smp.c b/arch/ppc/platforms/pmac_smp.c
index e613f0e0d9eb..26ff26238f03 100644
--- a/arch/ppc/platforms/pmac_smp.c
+++ b/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,
-                                           int wait)
+static void smp_psurge_message_pass(int target, int msg)
 {
         int i;
 
diff --git a/arch/ppc/platforms/pplus.c b/arch/ppc/platforms/pplus.c
index c8803214405d..59eb330b2090 100644
--- a/arch/ppc/platforms/pplus.c
+++ b/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 */
 }
diff --git a/arch/ppc/platforms/prep_setup.c b/arch/ppc/platforms/prep_setup.c
index 490ff175c902..9e5637e5f5a9 100644
--- a/arch/ppc/platforms/prep_setup.c
+++ b/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 */
 }
diff --git a/arch/ppc/syslib/open_pic.c b/arch/ppc/syslib/open_pic.c
index 361f113260d7..894779712b46 100644
--- a/arch/ppc/syslib/open_pic.c
+++ b/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 */