diff --git a/driver/gator_hrtimer_perf.c b/driver/gator_hrtimer_perf.c
+++ /dev/null
@@ -1,113 +0,0 @@
-/**
- * Copyright (C) ARM Limited 2011-2013. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- */
-
-// gator_hrtimer_gator.c is used if perf is not supported
-// update, gator_hrtimer_gator.c always used until issues resolved with perf hrtimers
-#if 0
-
-// Note: perf Cortex support added in 2.6.35 and PERF_COUNT_SW_CPU_CLOCK/hrtimer broken on 2.6.35 and 2.6.36
-// not relevant as this code is not active until 3.0.0, but wanted to document the issue
-
-void (*callback)(void);
-static int profiling_interval;
-static DEFINE_PER_CPU(struct perf_event *, perf_hrtimer);
-static DEFINE_PER_CPU(struct perf_event_attr *, perf_hrtimer_attr);
-
-static void gator_hrtimer_shutdown(void);
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 1, 0)
-static void hrtimer_overflow_handler(struct perf_event *event, int unused, struct perf_sample_data *data, struct pt_regs *regs)
-#else
-static void hrtimer_overflow_handler(struct perf_event *event, struct perf_sample_data *data, struct pt_regs *regs)
-#endif
-{
- (*callback)();
-}
-
-static int gator_online_single_hrtimer(int cpu)
-{
- if (per_cpu(perf_hrtimer, cpu) != 0 || per_cpu(perf_hrtimer_attr, cpu) == 0)
- return 0;
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 1, 0)
- per_cpu(perf_hrtimer, cpu) = perf_event_create_kernel_counter(per_cpu(perf_hrtimer_attr, cpu), cpu, 0, hrtimer_overflow_handler);
-#else
- per_cpu(perf_hrtimer, cpu) = perf_event_create_kernel_counter(per_cpu(perf_hrtimer_attr, cpu), cpu, 0, hrtimer_overflow_handler, 0);
-#endif
- if (IS_ERR(per_cpu(perf_hrtimer, cpu))) {
- per_cpu(perf_hrtimer, cpu) = NULL;
- return -1;
- }
-
- if (per_cpu(perf_hrtimer, cpu)->state != PERF_EVENT_STATE_ACTIVE) {
- perf_event_release_kernel(per_cpu(perf_hrtimer, cpu));
- per_cpu(perf_hrtimer, cpu) = NULL;
- return -1;
- }
-
- return 0;
-}
-
-static void gator_hrtimer_online(int cpu)
-{
- if (gator_online_single_hrtimer(cpu) < 0) {
- pr_debug("gator: unable to online the hrtimer on cpu%d\n", cpu);
- }
-}
-
-static void gator_hrtimer_offline(int cpu)
-{
- if (per_cpu(perf_hrtimer, cpu)) {
- perf_event_release_kernel(per_cpu(perf_hrtimer, cpu));
- per_cpu(perf_hrtimer, cpu) = NULL;
- }
-}
-
-static int gator_hrtimer_init(int interval, void (*func)(void))
-{
- u32 size = sizeof(struct perf_event_attr);
- int cpu;
-
- callback = func;
-
- // calculate profiling interval
- profiling_interval = 1000000000 / interval;
-
- for_each_present_cpu(cpu) {
- per_cpu(perf_hrtimer, cpu) = 0;
- per_cpu(perf_hrtimer_attr, cpu) = kmalloc(size, GFP_KERNEL);
- if (per_cpu(perf_hrtimer_attr, cpu) == 0) {
- gator_hrtimer_shutdown();
- return -1;
- }
-
- memset(per_cpu(perf_hrtimer_attr, cpu), 0, size);
- per_cpu(perf_hrtimer_attr, cpu)->type = PERF_TYPE_SOFTWARE;
- per_cpu(perf_hrtimer_attr, cpu)->size = size;
- per_cpu(perf_hrtimer_attr, cpu)->config = PERF_COUNT_SW_CPU_CLOCK;
- per_cpu(perf_hrtimer_attr, cpu)->sample_period = profiling_interval;
- per_cpu(perf_hrtimer_attr, cpu)->pinned = 1;
- }
-
- return 0;
-}
-
-static void gator_hrtimer_shutdown(void)
-{
- int cpu;
-
- for_each_present_cpu(cpu) {
- if (per_cpu(perf_hrtimer_attr, cpu)) {
- kfree(per_cpu(perf_hrtimer_attr, cpu));
- per_cpu(perf_hrtimer_attr, cpu) = NULL;
- }
- }
-}
-
-#endif