cpumask: arch_send_call_function_ipi_mask: sh

[safe/jmp/linux-2.6] / arch / sh / kernel / smp.c

diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c
index 5d039d1..576aad3 100644 (file)
--- a/arch/sh/kernel/smp.c
+++ b/arch/sh/kernel/smp.c
@@ -3,7 +3,7 @@
  *
  * SMP support for the SuperH processors.
  *
- * Copyright (C) 2002 - 2007 Paul Mundt
+ * Copyright (C) 2002 - 2008 Paul Mundt
  * Copyright (C) 2006 - 2007 Akio Idehara
  *
  * This file is subject to the terms and conditions of the GNU General Public
@@ -18,6 +18,7 @@
 #include <linux/spinlock.h>
 #include <linux/mm.h>
 #include <linux/module.h>
+#include <linux/cpu.h>
 #include <linux/interrupt.h>
 #include <asm/atomic.h>
 #include <asm/processor.h>
@@ -30,19 +31,6 @@
 int __cpu_number_map[NR_CPUS];         /* Map physical to logical */
 int __cpu_logical_map[NR_CPUS];                /* Map logical to physical */
 
-cpumask_t cpu_possible_map;
-EXPORT_SYMBOL(cpu_possible_map);
-
-cpumask_t cpu_online_map;
-EXPORT_SYMBOL(cpu_online_map);
-
-static atomic_t cpus_booted = ATOMIC_INIT(0);
-
-/*
- * Run specified function on a particular processor.
- */
-void __smp_call_function(unsigned int cpu);
-
 static inline void __init smp_store_cpu_info(unsigned int cpu)
 {
        struct sh_cpuinfo *c = cpu_data + cpu;
@@ -89,11 +77,16 @@ asmlinkage void __cpuinit start_secondary(void)
 
        preempt_disable();
 
+       notify_cpu_starting(smp_processor_id());
+
        local_irq_enable();
 
+       cpu = smp_processor_id();
+
+       /* Enable local timers */
+       local_timer_setup(cpu);
        calibrate_delay();
 
-       cpu = smp_processor_id();
        smp_store_cpu_info(cpu);
 
        cpu_set(cpu, cpu_online_map);
@@ -175,45 +168,56 @@ static void stop_this_cpu(void *unused)
 
 void smp_send_stop(void)
 {
-       smp_call_function(stop_this_cpu, 0, 1, 0);
+       smp_call_function(stop_this_cpu, 0, 0);
 }
 
-struct smp_fn_call_struct smp_fn_call = {
-       .lock           = __SPIN_LOCK_UNLOCKED(smp_fn_call.lock),
-       .finished       = ATOMIC_INIT(0),
-};
-
-/*
- * The caller of this wants the passed function to run on every cpu.  If wait
- * is set, wait until all cpus have finished the function before returning.
- * The lock is here to protect the call structure.
- * You must not call this function with disabled interrupts or from a
- * hardware interrupt handler or from a bottom half handler.
- */
-int smp_call_function(void (*func)(void *info), void *info, int retry, int wait)
+void arch_send_call_function_ipi_mask(const struct cpumask *mask)
 {
-       unsigned int nr_cpus = atomic_read(&cpus_booted);
-       int i;
-
-       /* Can deadlock when called with interrupts disabled */
-       WARN_ON(irqs_disabled());
+       int cpu;
 
-       spin_lock(&smp_fn_call.lock);
+       for_each_cpu(cpu, mask)
+               plat_send_ipi(cpu, SMP_MSG_FUNCTION);
+}
 
-       atomic_set(&smp_fn_call.finished, 0);
-       smp_fn_call.fn = func;
-       smp_fn_call.data = info;
+void arch_send_call_function_single_ipi(int cpu)
+{
+       plat_send_ipi(cpu, SMP_MSG_FUNCTION_SINGLE);
+}
 
-       for (i = 0; i < nr_cpus; i++)
-               if (i != smp_processor_id())
-                       plat_send_ipi(i, SMP_MSG_FUNCTION);
+void smp_timer_broadcast(const struct cpumask *mask)
+{
+       int cpu;
 
-       if (wait)
-               while (atomic_read(&smp_fn_call.finished) != (nr_cpus - 1));
+       for_each_cpu(cpu, mask)
+               plat_send_ipi(cpu, SMP_MSG_TIMER);
+}
 
-       spin_unlock(&smp_fn_call.lock);
+static void ipi_timer(void)
+{
+       irq_enter();
+       local_timer_interrupt();
+       irq_exit();
+}
 
-       return 0;
+void smp_message_recv(unsigned int msg)
+{
+       switch (msg) {
+       case SMP_MSG_FUNCTION:
+               generic_smp_call_function_interrupt();
+               break;
+       case SMP_MSG_RESCHEDULE:
+               break;
+       case SMP_MSG_FUNCTION_SINGLE:
+               generic_smp_call_function_single_interrupt();
+               break;
+       case SMP_MSG_TIMER:
+               ipi_timer();
+               break;
+       default:
+               printk(KERN_WARNING "SMP %d: %s(): unknown IPI %d\n",
+                      smp_processor_id(), __func__, msg);
+               break;
+       }
 }
 
 /* Not really SMP stuff ... */
@@ -229,7 +233,7 @@ static void flush_tlb_all_ipi(void *info)
 
 void flush_tlb_all(void)
 {
-       on_each_cpu(flush_tlb_all_ipi, 0, 1, 1);
+       on_each_cpu(flush_tlb_all_ipi, 0, 1);
 }
 
 static void flush_tlb_mm_ipi(void *mm)
@@ -255,7 +259,7 @@ void flush_tlb_mm(struct mm_struct *mm)
        preempt_disable();
 
        if ((atomic_read(&mm->mm_users) != 1) || (current->mm != mm)) {
-               smp_call_function(flush_tlb_mm_ipi, (void *)mm, 1, 1);
+               smp_call_function(flush_tlb_mm_ipi, (void *)mm, 1);
        } else {
                int i;
                for (i = 0; i < num_online_cpus(); i++)
@@ -292,7 +296,7 @@ void flush_tlb_range(struct vm_area_struct *vma,
                fd.vma = vma;
                fd.addr1 = start;
                fd.addr2 = end;
-               smp_call_function(flush_tlb_range_ipi, (void *)&fd, 1, 1);
+               smp_call_function(flush_tlb_range_ipi, (void *)&fd, 1);
        } else {
                int i;
                for (i = 0; i < num_online_cpus(); i++)
@@ -316,7 +320,7 @@ void flush_tlb_kernel_range(unsigned long start, unsigned long end)
 
        fd.addr1 = start;
        fd.addr2 = end;
-       on_each_cpu(flush_tlb_kernel_range_ipi, (void *)&fd, 1, 1);
+       on_each_cpu(flush_tlb_kernel_range_ipi, (void *)&fd, 1);
 }
 
 static void flush_tlb_page_ipi(void *info)
@@ -335,7 +339,7 @@ void flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
 
                fd.vma = vma;
                fd.addr1 = page;
-               smp_call_function(flush_tlb_page_ipi, (void *)&fd, 1, 1);
+               smp_call_function(flush_tlb_page_ipi, (void *)&fd, 1);
        } else {
                int i;
                for (i = 0; i < num_online_cpus(); i++)
@@ -359,6 +363,6 @@ void flush_tlb_one(unsigned long asid, unsigned long vaddr)
        fd.addr1 = asid;
        fd.addr2 = vaddr;
 
-       smp_call_function(flush_tlb_one_ipi, (void *)&fd, 1, 1);
+       smp_call_function(flush_tlb_one_ipi, (void *)&fd, 1);
        local_flush_tlb_one(asid, vaddr);
 }