Merge git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
[linux-2.6.git] / arch / ia64 / kernel / irq_ia64.c
index 1c5044a809584b592ac5b069f7cc69fa0eead7e1..dce5341303dea25ecb12777058df025d4be6601b 100644 (file)
@@ -38,6 +38,7 @@
 #include <asm/machvec.h>
 #include <asm/pgtable.h>
 #include <asm/system.h>
+#include <asm/tlbflush.h>
 
 #ifdef CONFIG_PERFMON
 # include <asm/perfmon.h>
@@ -126,8 +127,10 @@ void destroy_irq(unsigned int irq)
 
 #ifdef CONFIG_SMP
 #      define IS_RESCHEDULE(vec)       (vec == IA64_IPI_RESCHEDULE)
+#      define IS_LOCAL_TLB_FLUSH(vec)  (vec == IA64_IPI_LOCAL_TLB_FLUSH)
 #else
 #      define IS_RESCHEDULE(vec)       (0)
+#      define IS_LOCAL_TLB_FLUSH(vec)  (0)
 #endif
 /*
  * That's where the IVT branches when we get an external
@@ -179,8 +182,11 @@ ia64_handle_irq (ia64_vector vector, struct pt_regs *regs)
        saved_tpr = ia64_getreg(_IA64_REG_CR_TPR);
        ia64_srlz_d();
        while (vector != IA64_SPURIOUS_INT_VECTOR) {
-               if (unlikely(IS_RESCHEDULE(vector)))
-                        kstat_this_cpu.irqs[vector]++;
+               if (unlikely(IS_LOCAL_TLB_FLUSH(vector))) {
+                       smp_local_flush_tlb();
+                       kstat_this_cpu.irqs[vector]++;
+               } else if (unlikely(IS_RESCHEDULE(vector)))
+                       kstat_this_cpu.irqs[vector]++;
                else {
                        ia64_setreg(_IA64_REG_CR_TPR, vector);
                        ia64_srlz_d();
@@ -226,8 +232,11 @@ void ia64_process_pending_intr(void)
          * Perform normal interrupt style processing
          */
        while (vector != IA64_SPURIOUS_INT_VECTOR) {
-               if (unlikely(IS_RESCHEDULE(vector)))
-                        kstat_this_cpu.irqs[vector]++;
+               if (unlikely(IS_LOCAL_TLB_FLUSH(vector))) {
+                       smp_local_flush_tlb();
+                       kstat_this_cpu.irqs[vector]++;
+               } else if (unlikely(IS_RESCHEDULE(vector)))
+                       kstat_this_cpu.irqs[vector]++;
                else {
                        struct pt_regs *old_regs = set_irq_regs(NULL);
 
@@ -259,12 +268,12 @@ void ia64_process_pending_intr(void)
 
 
 #ifdef CONFIG_SMP
-extern irqreturn_t handle_IPI (int irq, void *dev_id);
 
 static irqreturn_t dummy_handler (int irq, void *dev_id)
 {
        BUG();
 }
+extern irqreturn_t handle_IPI (int irq, void *dev_id);
 
 static struct irqaction ipi_irqaction = {
        .handler =      handle_IPI,
@@ -277,6 +286,13 @@ static struct irqaction resched_irqaction = {
        .flags =        IRQF_DISABLED,
        .name =         "resched"
 };
+
+static struct irqaction tlb_irqaction = {
+       .handler =      dummy_handler,
+       .flags =        SA_INTERRUPT,
+       .name =         "tlb_flush"
+};
+
 #endif
 
 void
@@ -302,6 +318,7 @@ init_IRQ (void)
 #ifdef CONFIG_SMP
        register_percpu_irq(IA64_IPI_VECTOR, &ipi_irqaction);
        register_percpu_irq(IA64_IPI_RESCHEDULE, &resched_irqaction);
+       register_percpu_irq(IA64_IPI_LOCAL_TLB_FLUSH, &tlb_irqaction);
 #endif
 #ifdef CONFIG_PERFMON
        pfm_init_percpu();