1 files changed, 0 insertions, 296 deletions
diff --git a/drivers/gator/driver/gator_events_perf_pmu.c b/drivers/gator/driver/gator_events_perf_pmu.c
deleted file mode 100644
index 322ebc430ec..00000000000
--- a/drivers/gator/driver/gator_events_perf_pmu.c
+++ /dev/null
@@ -1,296 +0,0 @@
-/**
- * Copyright (C) ARM Limited 2010-2012. 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.
- */
-
-#include <linux/slab.h>
-#include <linux/perf_event.h>
-#include "gator.h"
-
-// gator_events_armvX.c is used for Linux 2.6.x
-#if GATOR_PERF_PMU_SUPPORT
-
-static const char *pmnc_name;
-int pmnc_counters;
-int ccnt = 0;
-
-#define CNTMAX (6+1)
-
-unsigned long pmnc_enabled[CNTMAX];
-unsigned long pmnc_event[CNTMAX];
-unsigned long pmnc_count[CNTMAX];
-unsigned long pmnc_key[CNTMAX];
-
-static DEFINE_PER_CPU(int[CNTMAX], perfCurr);
-static DEFINE_PER_CPU(int[CNTMAX], perfPrev);
-static DEFINE_PER_CPU(int[CNTMAX], perfPrevDelta);
-static DEFINE_PER_CPU(int[CNTMAX * 2], perfCnt);
-static DEFINE_PER_CPU(struct perf_event *[CNTMAX], pevent);
-static DEFINE_PER_CPU(struct perf_event_attr *[CNTMAX], pevent_attr);
-
-static void gator_events_perf_pmu_stop(void);
-
-static int gator_events_perf_pmu_create_files(struct super_block *sb, struct dentry *root)
-{
-	struct dentry *dir;
-	int i;
-
-	for (i = 0; i < pmnc_counters; i++) {
-		char buf[40];
-		if (i == 0) {
-			snprintf(buf, sizeof buf, "%s_ccnt", pmnc_name);
-		} else {
-			snprintf(buf, sizeof buf, "%s_cnt%d", pmnc_name, i-1);
-		}
-		dir = gatorfs_mkdir(sb, root, buf);
-		if (!dir) {
-			return -1;
-		}
-		gatorfs_create_ulong(sb, dir, "enabled", &pmnc_enabled[i]);
-		gatorfs_create_ulong(sb, dir, "count", &pmnc_count[i]);
-		gatorfs_create_ro_ulong(sb, dir, "key", &pmnc_key[i]);
-		if (i > 0) {
-			gatorfs_create_ulong(sb, dir, "event", &pmnc_event[i]);
-		}
-	}
-
-	return 0;
-}
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 1, 0)
-static void dummy_handler(struct perf_event *event, int unused, struct perf_sample_data *data, struct pt_regs *regs)
-#else
-static void dummy_handler(struct perf_event *event, struct perf_sample_data *data, struct pt_regs *regs)
-#endif
-{
-// Required as perf_event_create_kernel_counter() requires an overflow handler, even though all we do is poll
-}
-
-static int gator_events_perf_pmu_online(int** buffer)
-{
-	int cnt, len = 0, cpu = smp_processor_id();
-
-	// read the counters and toss the invalid data, return zero instead
-	for (cnt = 0; cnt < pmnc_counters; cnt++) {
-		struct perf_event * ev = per_cpu(pevent, cpu)[cnt];
-		if (ev != NULL && ev->state == PERF_EVENT_STATE_ACTIVE) {
-			ev->pmu->read(ev);
-			per_cpu(perfPrev, cpu)[cnt] = per_cpu(perfCurr, cpu)[cnt] = local64_read(&ev->count);
-			per_cpu(perfPrevDelta, cpu)[cnt] = 0;
-			per_cpu(perfCnt, cpu)[len++] = pmnc_key[cnt];
-			per_cpu(perfCnt, cpu)[len++] = 0;
-		}
-	}
-
-	if (buffer)
-		*buffer = per_cpu(perfCnt, cpu);
-
-	return len;
-}
-
-static void gator_events_perf_pmu_online_dispatch(int cpu)
-{
-	int cnt;
-
-	for (cnt = 0; cnt < pmnc_counters; cnt++) {
-		if (per_cpu(pevent, cpu)[cnt] != NULL || per_cpu(pevent_attr, cpu)[cnt] == 0)
-			continue;
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 1, 0)
-		per_cpu(pevent, cpu)[cnt] = perf_event_create_kernel_counter(per_cpu(pevent_attr, cpu)[cnt], cpu, 0, dummy_handler);
-#else
-		per_cpu(pevent, cpu)[cnt] = perf_event_create_kernel_counter(per_cpu(pevent_attr, cpu)[cnt], cpu, 0, dummy_handler, 0);
-#endif
-		if (IS_ERR(per_cpu(pevent, cpu)[cnt])) {
-			pr_debug("gator: unable to online a counter on cpu %d\n", cpu);
-			per_cpu(pevent, cpu)[cnt] = NULL;
-			continue;
-		}
-
-		if (per_cpu(pevent, cpu)[cnt]->state != PERF_EVENT_STATE_ACTIVE) {
-			pr_debug("gator: inactive counter on cpu %d\n", cpu);
-			perf_event_release_kernel(per_cpu(pevent, cpu)[cnt]);
-			per_cpu(pevent, cpu)[cnt] = NULL;
-			continue;
-		}
-	}
-}
-
-static void gator_events_perf_pmu_offline_dispatch(int cpu)
-{
-	int cnt;
-
-	for (cnt = 0; cnt < pmnc_counters; cnt++) {
-		if (per_cpu(pevent, cpu)[cnt] != NULL) {
-			perf_event_release_kernel(per_cpu(pevent, cpu)[cnt]);
-			per_cpu(pevent, cpu)[cnt] = NULL;
-		}
-	}
-}
-
-static int gator_events_perf_pmu_start(void)
-{
-	int cnt, cpu;
-	u32 size = sizeof(struct perf_event_attr);
-
-	for_each_present_cpu(cpu) {
-		for (cnt = 0; cnt < pmnc_counters; cnt++) {
-			per_cpu(pevent, cpu)[cnt] = NULL;
-			if (!pmnc_enabled[cnt] || pmnc_count[cnt] > 0) // Skip disabled counters and EBS counters
-				continue;
-
-			per_cpu(perfPrev, cpu)[cnt] = 0;
-			per_cpu(perfCurr, cpu)[cnt] = 0;
-			per_cpu(perfPrevDelta, cpu)[cnt] = 0;
-			per_cpu(pevent_attr, cpu)[cnt] = kmalloc(size, GFP_KERNEL);
-			if (!per_cpu(pevent_attr, cpu)[cnt]) {
-				gator_events_perf_pmu_stop();
-				return -1;
-			}
-
-			memset(per_cpu(pevent_attr, cpu)[cnt], 0, size);
-			per_cpu(pevent_attr, cpu)[cnt]->type = PERF_TYPE_RAW;
-			per_cpu(pevent_attr, cpu)[cnt]->size = size;
-			per_cpu(pevent_attr, cpu)[cnt]->config = pmnc_event[cnt];
-			per_cpu(pevent_attr, cpu)[cnt]->sample_period = 0;
-			per_cpu(pevent_attr, cpu)[cnt]->pinned = 1;
-
-			// handle special case for ccnt
-			if (cnt == ccnt) {
-				per_cpu(pevent_attr, cpu)[cnt]->type = PERF_TYPE_HARDWARE;
-				per_cpu(pevent_attr, cpu)[cnt]->config = PERF_COUNT_HW_CPU_CYCLES;
-			}
-		}
-	}
-
-	return 0;
-}
-
-static void gator_events_perf_pmu_stop(void)
-{
-	unsigned int cnt, cpu;
-
-	for_each_present_cpu(cpu) {
-		for (cnt = 0; cnt < pmnc_counters; cnt++) {
-			if (per_cpu(pevent_attr, cpu)[cnt]) {
-				kfree(per_cpu(pevent_attr, cpu)[cnt]);
-				per_cpu(pevent_attr, cpu)[cnt] = NULL;
-			}
-		}
-	}
-
-	for (cnt = 0; cnt < pmnc_counters; cnt++) {
-		pmnc_enabled[cnt] = 0;
-		pmnc_event[cnt] = 0;
-		pmnc_count[cnt] = 0;
-	}
-}
-
-static int gator_events_perf_pmu_read(int **buffer)
-{
-	int cnt, delta, len = 0;
-	int cpu = smp_processor_id();
-
-	for (cnt = 0; cnt < pmnc_counters; cnt++) {
-		struct perf_event * ev = per_cpu(pevent, cpu)[cnt];
-		if (ev != NULL && ev->state == PERF_EVENT_STATE_ACTIVE) {
-			ev->pmu->read(ev);
-			per_cpu(perfCurr, cpu)[cnt] = local64_read(&ev->count);
-			delta = per_cpu(perfCurr, cpu)[cnt] - per_cpu(perfPrev, cpu)[cnt];
-			if (delta != per_cpu(perfPrevDelta, cpu)[cnt]) {
-				per_cpu(perfPrevDelta, cpu)[cnt] = delta;
-				per_cpu(perfPrev, cpu)[cnt] = per_cpu(perfCurr, cpu)[cnt];
-				per_cpu(perfCnt, cpu)[len++] = pmnc_key[cnt];
-				if (delta < 0)
-					delta *= -1;
-				per_cpu(perfCnt, cpu)[len++] = delta;
-			}
-		}
-	}
-
-	if (buffer)
-		*buffer = per_cpu(perfCnt, cpu);
-
-	return len;
-}
-
-static struct gator_interface gator_events_perf_pmu_interface = {
-	.create_files = gator_events_perf_pmu_create_files,
-	.start = gator_events_perf_pmu_start,
-	.stop = gator_events_perf_pmu_stop,
-	.online = gator_events_perf_pmu_online,
-	.online_dispatch = gator_events_perf_pmu_online_dispatch,
-	.offline_dispatch = gator_events_perf_pmu_offline_dispatch,
-	.read = gator_events_perf_pmu_read,
-};
-
-int gator_events_perf_pmu_init(void)
-{
-	unsigned int cnt;
-
-	switch (gator_cpuid()) {
-	case ARM1136:
-	case ARM1156:
-	case ARM1176:
-		pmnc_name = "ARM_ARM11";
-		pmnc_counters = 3;
-		ccnt = 2;
-		break;
-	case ARM11MPCORE:
-		pmnc_name = "ARM_ARM11MPCore";
-		pmnc_counters = 3;
-		break;
-	case CORTEX_A5:
-		pmnc_name = "ARM_Cortex-A5";
-		pmnc_counters = 2;
-		break;
-	case CORTEX_A7:
-		pmnc_name = "ARM_Cortex-A7";
-		pmnc_counters = 4;
-		break;
-	case CORTEX_A8:
-		pmnc_name = "ARM_Cortex-A8";
-		pmnc_counters = 4;
-		break;
-	case CORTEX_A9:
-		pmnc_name = "ARM_Cortex-A9";
-		pmnc_counters = 6;
-		break;
-	case CORTEX_A15:
-		pmnc_name = "ARM_Cortex-A15";
-		pmnc_counters = 6;
-		break;
-	case SCORPION:
-		pmnc_name = "Scorpion";
-		pmnc_counters = 4;
-		break;
-	case SCORPIONMP:
-		pmnc_name = "ScorpionMP";
-		pmnc_counters = 4;
-		break;
-	case KRAITSIM:
-	case KRAIT:
-		pmnc_name = "Krait";
-		pmnc_counters = 4;
-		break;
-	default:
-		return -1;
-	}
-
-	pmnc_counters++; // CNT[n] + CCNT
-
-	for (cnt = 0; cnt < CNTMAX; cnt++) {
-		pmnc_enabled[cnt] = 0;
-		pmnc_event[cnt] = 0;
-		pmnc_count[cnt] = 0;
-		pmnc_key[cnt] = gator_events_get_key();
-	}
-
-	return gator_events_install(&gator_events_perf_pmu_interface);
-}
-
-gator_events_init(gator_events_perf_pmu_init);
-#endif