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path: root/drivers/gator/driver/gator_trace_gpu.c
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Diffstat (limited to 'drivers/gator/driver/gator_trace_gpu.c')
-rw-r--r--drivers/gator/driver/gator_trace_gpu.c250
1 files changed, 0 insertions, 250 deletions
diff --git a/drivers/gator/driver/gator_trace_gpu.c b/drivers/gator/driver/gator_trace_gpu.c
deleted file mode 100644
index bc63995c847..00000000000
--- a/drivers/gator/driver/gator_trace_gpu.c
+++ /dev/null
@@ -1,250 +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 "gator.h"
-
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/time.h>
-#include <linux/math64.h>
-
-#ifdef MALI_SUPPORT
-#include "linux/mali_linux_trace.h"
-#endif
-#include "gator_trace_gpu.h"
-
-#define ACTIVITY_START 1
-#define ACTIVITY_STOP 2
-
-/* Note whether tracepoints have been registered */
-static int mali_trace_registered;
-static int gpu_trace_registered;
-
-#define GPU_OVERFLOW -1
-#define GPU_START 1
-#define GPU_STOP 2
-
-#define GPU_UNIT_VP 1
-#define GPU_UNIT_FP 2
-
-#define TRACESIZE (8*1024)
-
-static DEFINE_PER_CPU(uint64_t *[2], theGpuTraceBuf);
-static DEFINE_PER_CPU(int, theGpuTraceSel);
-static DEFINE_PER_CPU(int, theGpuTracePos);
-static DEFINE_PER_CPU(int, theGpuTraceErr);
-
-int gator_trace_gpu_read(long long **buffer);
-
-static void probe_gpu_write(int type, int unit, int core, struct task_struct* task)
-{
- int tracePos;
- unsigned long flags;
- uint64_t *traceBuf, time;
- int pid, tgid;
- int cpu = smp_processor_id();
-
- if (!per_cpu(theGpuTraceBuf, cpu)[per_cpu(theGpuTraceSel, cpu)])
- return;
-
- if (task) {
- tgid = (int)task->tgid;
- pid = (int)task->pid;
- } else {
- tgid = pid = 0;
- }
-
- // disable interrupts to synchronize with gator_trace_gpu_read(); spinlocks not needed since percpu buffers are used
- local_irq_save(flags);
-
- time = gator_get_time();
- tracePos = per_cpu(theGpuTracePos, cpu);
- traceBuf = per_cpu(theGpuTraceBuf, cpu)[per_cpu(theGpuTraceSel, cpu)];
-
- if (tracePos < (TRACESIZE - 100)) {
- // capture
- traceBuf[tracePos++] = type;
- traceBuf[tracePos++] = time;
- traceBuf[tracePos++] = unit;
- traceBuf[tracePos++] = core;
- traceBuf[tracePos++] = tgid;
- traceBuf[tracePos++] = pid;
- } else if (!per_cpu(theGpuTraceErr, cpu)) {
- per_cpu(theGpuTraceErr, cpu) = 1;
- traceBuf[tracePos++] = GPU_OVERFLOW;
- traceBuf[tracePos++] = time;
- traceBuf[tracePos++] = 0;
- traceBuf[tracePos++] = 0;
- traceBuf[tracePos++] = 0;
- traceBuf[tracePos++] = 0;
- pr_debug("gator: gpu trace overflow\n");
- }
- per_cpu(theGpuTracePos, cpu) = tracePos;
- local_irq_restore(flags);
-}
-
-#ifdef MALI_SUPPORT
-
-enum components {
- COMPONENT_VP0 = 1,
- COMPONENT_FP0 = 5,
- COMPONENT_FP1,
- COMPONENT_FP2,
- COMPONENT_FP3,
- COMPONENT_FP4,
- COMPONENT_FP5,
- COMPONENT_FP6,
- COMPONENT_FP7,
-};
-
-GATOR_DEFINE_PROBE(mali_timeline_event, TP_PROTO(unsigned int event_id, unsigned int d0, unsigned int d1, unsigned int d2, unsigned int d3, unsigned int d4))
-{
- unsigned int component, state;
-
- // do as much work as possible before disabling interrupts
- component = (event_id >> 16) & 0xF;
- state = (event_id >> 24) & 0xF;
-
- if ((component == COMPONENT_VP0) || (component >= COMPONENT_FP0 && component <= COMPONENT_FP7)) {
- if (state == ACTIVITY_START || state == ACTIVITY_STOP) {
- unsigned int type = (state == ACTIVITY_START) ? GPU_START : GPU_STOP;
- unsigned int unit = (component < COMPONENT_FP0) ? GPU_UNIT_VP : GPU_UNIT_FP;
- unsigned int core = (component < COMPONENT_FP0) ? component - COMPONENT_VP0 : component - COMPONENT_FP0;
- struct task_struct* task = (state == ACTIVITY_START) ? (struct task_struct*)d2 : NULL;
-
- probe_gpu_write(type, unit, core, task);
- }
- }
-}
-#endif
-
-GATOR_DEFINE_PROBE(gpu_activity_start, TP_PROTO(int gpu_unit, int gpu_core, struct task_struct *p))
-{
- probe_gpu_write(GPU_START, gpu_unit, gpu_core, p);
-}
-
-GATOR_DEFINE_PROBE(gpu_activity_stop, TP_PROTO(int gpu_unit, int gpu_core))
-{
- probe_gpu_write(GPU_STOP, gpu_unit, gpu_core, NULL);
-}
-
-int gator_trace_gpu_start(void)
-{
- int cpu;
-
- /*
- * Returns 0 for installation failed
- * Absence of gpu trace points is not an error
- */
-
- gpu_trace_registered = mali_trace_registered = 0;
-
-#ifdef MALI_SUPPORT
- if (!GATOR_REGISTER_TRACE(mali_timeline_event)) {
- mali_trace_registered = 1;
- }
-#endif
-
- if (!mali_trace_registered) {
- if (GATOR_REGISTER_TRACE(gpu_activity_start)) {
- return 0;
- }
- if (GATOR_REGISTER_TRACE(gpu_activity_stop)) {
- GATOR_UNREGISTER_TRACE(gpu_activity_start);
- return 0;
- }
- gpu_trace_registered = 1;
- }
-
- if (!gpu_trace_registered && !mali_trace_registered) {
- return 0;
- }
-
- for_each_present_cpu(cpu) {
- per_cpu(theGpuTraceSel, cpu) = 0;
- per_cpu(theGpuTracePos, cpu) = 0;
- per_cpu(theGpuTraceErr, cpu) = 0;
- per_cpu(theGpuTraceBuf, cpu)[0] = kmalloc(TRACESIZE * sizeof(uint64_t), GFP_KERNEL);
- per_cpu(theGpuTraceBuf, cpu)[1] = kmalloc(TRACESIZE * sizeof(uint64_t), GFP_KERNEL);
- if (!per_cpu(theGpuTraceBuf, cpu)[0] || !per_cpu(theGpuTraceBuf, cpu)[1]) {
-#ifdef MALI_SUPPORT
- if (mali_trace_registered) {
- GATOR_UNREGISTER_TRACE(mali_timeline_event);
- }
-#endif
- if (gpu_trace_registered) {
- GATOR_UNREGISTER_TRACE(gpu_activity_stop);
- GATOR_UNREGISTER_TRACE(gpu_activity_start);
- }
-
- gpu_trace_registered = mali_trace_registered = 0;
-
- return -1;
- }
- }
-
- return 0;
-}
-
-int gator_trace_gpu_offline(long long **buffer)
-{
- return gator_trace_gpu_read(buffer);
-}
-
-void gator_trace_gpu_stop(void)
-{
- int cpu;
-
- if (gpu_trace_registered || mali_trace_registered) {
- for_each_present_cpu(cpu) {
- kfree(per_cpu(theGpuTraceBuf, cpu)[0]);
- kfree(per_cpu(theGpuTraceBuf, cpu)[1]);
- per_cpu(theGpuTraceBuf, cpu)[0] = NULL;
- per_cpu(theGpuTraceBuf, cpu)[1] = NULL;
- }
-
-#ifdef MALI_SUPPORT
- if (mali_trace_registered) {
- GATOR_UNREGISTER_TRACE(mali_timeline_event);
- }
-#endif
- if (gpu_trace_registered) {
- GATOR_UNREGISTER_TRACE(gpu_activity_stop);
- GATOR_UNREGISTER_TRACE(gpu_activity_start);
- }
-
- gpu_trace_registered = mali_trace_registered = 0;
- }
-}
-
-int gator_trace_gpu_read(long long **buffer)
-{
- int cpu = smp_processor_id();
- unsigned long flags;
- uint64_t *traceBuf;
- int tracePos;
-
- if (!per_cpu(theGpuTraceBuf, cpu)[per_cpu(theGpuTraceSel, cpu)])
- return 0;
-
- local_irq_save(flags);
-
- traceBuf = per_cpu(theGpuTraceBuf, cpu)[per_cpu(theGpuTraceSel, cpu)];
- tracePos = per_cpu(theGpuTracePos, cpu);
-
- per_cpu(theGpuTraceSel, cpu) = !per_cpu(theGpuTraceSel, cpu);
- per_cpu(theGpuTracePos, cpu) = 0;
- per_cpu(theGpuTraceErr, cpu) = 0;
-
- local_irq_restore(flags);
-
- if (buffer)
- *buffer = traceBuf;
-
- return tracePos;
-}
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