Merge branch 'generic-ipi' into generic-ipi-for-linus

Conflicts:

	arch/powerpc/Kconfig
	arch/s390/kernel/time.c
	arch/x86/kernel/apic_32.c
	arch/x86/kernel/cpu/perfctr-watchdog.c
	arch/x86/kernel/i8259_64.c
	arch/x86/kernel/ldt.c
	arch/x86/kernel/nmi_64.c
	arch/x86/kernel/smpboot.c
	arch/x86/xen/smp.c
	include/asm-x86/hw_irq_32.h
	include/asm-x86/hw_irq_64.h
	include/asm-x86/mach-default/irq_vectors.h
	include/asm-x86/mach-voyager/irq_vectors.h
	include/asm-x86/smp.h
	kernel/Makefile

Signed-off-by: Ingo Molnar <mingo@elte.hu>

2 files changed, 16 insertions, 47 deletions

diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 9a854c8e5274..3e7384f4619c 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -688,6 +688,7 @@ config CRASH_DUMP
 config SMP
         bool "Symmetric multi-processing support"
         depends on SYS_SUPPORTS_SMP
+        select USE_GENERIC_SMP_HELPERS
         ---help---
           This enables support for systems with more than one CPU. If you have
           a system with only one CPU, like most personal computers, say N. If
diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c
index 5d039d168f57..60c50841143e 100644
--- a/arch/sh/kernel/smp.c
+++ b/arch/sh/kernel/smp.c
@@ -36,13 +36,6 @@ 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;
@@ -175,45 +168,20 @@ 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(cpumask_t mask)
 {
-        unsigned int nr_cpus = atomic_read(&cpus_booted);
-        int i;
-
-        /* Can deadlock when called with interrupts disabled */
-        WARN_ON(irqs_disabled());
-
-        spin_lock(&smp_fn_call.lock);
-
-        atomic_set(&smp_fn_call.finished, 0);
-        smp_fn_call.fn = func;
-        smp_fn_call.data = info;
-
-        for (i = 0; i < nr_cpus; i++)
-                if (i != smp_processor_id())
-                        plat_send_ipi(i, SMP_MSG_FUNCTION);
-
-        if (wait)
-                while (atomic_read(&smp_fn_call.finished) != (nr_cpus - 1));
+        int cpu;
 
-        spin_unlock(&smp_fn_call.lock);
+        for_each_cpu_mask(cpu, mask)
+                plat_send_ipi(cpu, SMP_MSG_FUNCTION);
+}
 
-        return 0;
+void arch_send_call_function_single_ipi(int cpu)
+{
+        plat_send_ipi(cpu, SMP_MSG_FUNCTION_SINGLE);
 }
 
 /* Not really SMP stuff ... */
@@ -229,7 +197,7 @@ 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 +223,7 @@ 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 +260,7 @@ 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 +284,7 @@ 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 +303,7 @@ 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 +327,6 @@ 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);
 }