4 files changed, 47 insertions, 8 deletions

diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c
index 8b0b4181219f..981f86c26168 100644
--- a/arch/mips/kernel/irq.c
+++ b/arch/mips/kernel/irq.c
@@ -22,6 +22,7 @@
 #include <linux/seq_file.h>
 #include <linux/kallsyms.h>
 #include <linux/kgdb.h>
+#include <linux/ftrace.h>
 
 #include <asm/atomic.h>
 #include <asm/system.h>
@@ -150,3 +151,32 @@ void __init init_IRQ(void)
                 kgdb_early_setup = 1;
 #endif
 }
+
+/*
+ * do_IRQ handles all normal device IRQ's (the special
+ * SMP cross-CPU interrupts have their own specific
+ * handlers).
+ */
+void __irq_entry do_IRQ(unsigned int irq)
+{
+        irq_enter();
+        __DO_IRQ_SMTC_HOOK(irq);
+        generic_handle_irq(irq);
+        irq_exit();
+}
+
+#ifdef CONFIG_MIPS_MT_SMTC_IRQAFF
+/*
+ * To avoid inefficient and in some cases pathological re-checking of
+ * IRQ affinity, we have this variant that skips the affinity check.
+ */
+
+void __irq_entry do_IRQ_no_affinity(unsigned int irq)
+{
+        irq_enter();
+        __NO_AFFINITY_IRQ_SMTC_HOOK(irq);
+        generic_handle_irq(irq);
+        irq_exit();
+}
+
+#endif /* CONFIG_MIPS_MT_SMTC_IRQAFF */
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index e72e6844d134..6cdca1956b77 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -32,6 +32,7 @@
 #include <linux/cpumask.h>
 #include <linux/cpu.h>
 #include <linux/err.h>
+#include <linux/ftrace.h>
 
 #include <asm/atomic.h>
 #include <asm/cpu.h>
@@ -130,7 +131,7 @@ asmlinkage __cpuinit void start_secondary(void)
 /*
  * Call into both interrupt handlers, as we share the IPI for them
  */
-void smp_call_function_interrupt(void)
+void __irq_entry smp_call_function_interrupt(void)
 {
         irq_enter();
         generic_smp_call_function_single_interrupt();
diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c
index a38e3ee95515..23499b5bd9c3 100644
--- a/arch/mips/kernel/smtc.c
+++ b/arch/mips/kernel/smtc.c
@@ -25,6 +25,7 @@
 #include <linux/interrupt.h>
 #include <linux/kernel_stat.h>
 #include <linux/module.h>
+#include <linux/ftrace.h>
 
 #include <asm/cpu.h>
 #include <asm/processor.h>
@@ -939,23 +940,29 @@ static void ipi_call_interrupt(void)
 
 DECLARE_PER_CPU(struct clock_event_device, mips_clockevent_device);
 
-void ipi_decode(struct smtc_ipi *pipi)
+static void __irq_entry smtc_clock_tick_interrupt(void)
 {
         unsigned int cpu = smp_processor_id();
         struct clock_event_device *cd;
+        int irq = MIPS_CPU_IRQ_BASE + 1;
+
+        irq_enter();
+        kstat_incr_irqs_this_cpu(irq, irq_to_desc(irq));
+        cd = &per_cpu(mips_clockevent_device, cpu);
+        cd->event_handler(cd);
+        irq_exit();
+}
+
+void ipi_decode(struct smtc_ipi *pipi)
+{
         void *arg_copy = pipi->arg;
         int type_copy = pipi->type;
-        int irq = MIPS_CPU_IRQ_BASE + 1;
 
         smtc_ipi_nq(&freeIPIq, pipi);
 
         switch (type_copy) {
         case SMTC_CLOCK_TICK:
-                irq_enter();
-                kstat_incr_irqs_this_cpu(irq, irq_to_desc(irq));
-                cd = &per_cpu(mips_clockevent_device, cpu);
-                cd->event_handler(cd);
-                irq_exit();
+                smtc_clock_tick_interrupt();
                 break;
 
         case LINUX_SMP_IPI:
diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S
index 162b29954baa..f25df73db923 100644
--- a/arch/mips/kernel/vmlinux.lds.S
+++ b/arch/mips/kernel/vmlinux.lds.S
@@ -46,6 +46,7 @@ SECTIONS
                 SCHED_TEXT
                 LOCK_TEXT
                 KPROBES_TEXT
+                IRQENTRY_TEXT
                 *(.text.*)
                 *(.fixup)
                 *(.gnu.warning)