Revert "Remove dead CONFIG_SIBYTE_BCM1480_PROF"

This reverts commit 22c1d8b4f8f04882046ebe592f9a9eaea443cb45. It has
been nacked by MIPS maintainer Ralf Baechle.

1 files changed, 11 insertions, 0 deletions

diff --git a/arch/mips/sibyte/bcm1480/irq.c b/arch/mips/sibyte/bcm1480/irq.c
index 919d2d58e6fa..044bbe462c2c 100644
--- a/arch/mips/sibyte/bcm1480/irq.c
+++ b/arch/mips/sibyte/bcm1480/irq.c
@@ -362,8 +362,19 @@ asmlinkage void plat_irq_dispatch(void)
         unsigned int cpu = smp_processor_id();
         unsigned int pending;
 
+#ifdef CONFIG_SIBYTE_BCM1480_PROF
+        /* Set compare to count to silence count/compare timer interrupts */
+        write_c0_compare(read_c0_count());
+#endif
+
         pending = read_c0_cause() & read_c0_status();
 
+#ifdef CONFIG_SIBYTE_BCM1480_PROF
+        if (pending & CAUSEF_IP7)       /* Cpu performance counter interrupt */
+                sbprof_cpu_intr();
+        else
+#endif
+
         if (pending & CAUSEF_IP4)
                 do_IRQ(K_BCM1480_INT_TIMER_0 + cpu);
 #ifdef CONFIG_SMP