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/**
* Copyright (C) ARM Limited 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.
*
*/
static void marshal_summary(long long timestamp, long long uptime) {
int cpu = 0;
gator_buffer_write_packed_int(cpu, BACKTRACE_BUF, MESSAGE_SUMMARY);
gator_buffer_write_packed_int64(cpu, BACKTRACE_BUF, timestamp);
gator_buffer_write_packed_int64(cpu, BACKTRACE_BUF, uptime);
}
static bool marshal_cookie_header(char* text) {
int cpu = smp_processor_id();
return buffer_check_space(cpu, BACKTRACE_BUF, strlen(text) + 2 * MAXSIZE_PACK32);
}
static void marshal_cookie(int cookie, char* text) {
int cpu = smp_processor_id();
gator_buffer_write_packed_int(cpu, BACKTRACE_BUF, MESSAGE_COOKIE);
gator_buffer_write_packed_int(cpu, BACKTRACE_BUF, cookie);
gator_buffer_write_string(cpu, BACKTRACE_BUF, text);
}
static void marshal_pid_name(int pid, char* name) {
unsigned long flags, cpu;
local_irq_save(flags);
cpu = smp_processor_id();
if (buffer_check_space(cpu, BACKTRACE_BUF, TASK_COMM_LEN + 2 * MAXSIZE_PACK32 + MAXSIZE_PACK64)) {
gator_buffer_write_packed_int(cpu, BACKTRACE_BUF, MESSAGE_PID_NAME);
gator_buffer_write_packed_int64(cpu, BACKTRACE_BUF, gator_get_time());
gator_buffer_write_packed_int(cpu, BACKTRACE_BUF, pid);
gator_buffer_write_string(cpu, BACKTRACE_BUF, name);
}
local_irq_restore(flags);
}
static bool marshal_backtrace_header(int exec_cookie, int tgid, int pid, int inKernel) {
int cpu = smp_processor_id();
if (buffer_check_space(cpu, BACKTRACE_BUF, gator_backtrace_depth * 2 * MAXSIZE_PACK32)) {
gator_buffer_write_packed_int(cpu, BACKTRACE_BUF, MESSAGE_START_BACKTRACE);
gator_buffer_write_packed_int64(cpu, BACKTRACE_BUF, gator_get_time());
gator_buffer_write_packed_int(cpu, BACKTRACE_BUF, exec_cookie);
gator_buffer_write_packed_int(cpu, BACKTRACE_BUF, tgid);
gator_buffer_write_packed_int(cpu, BACKTRACE_BUF, pid);
gator_buffer_write_packed_int(cpu, BACKTRACE_BUF, inKernel);
return true;
}
// Check and commit; commit is set to occur once buffer is 3/4 full
buffer_check(cpu, BACKTRACE_BUF);
return false;
}
static void marshal_backtrace(int address, int cookie) {
int cpu = smp_processor_id();
gator_buffer_write_packed_int(cpu, BACKTRACE_BUF, address);
gator_buffer_write_packed_int(cpu, BACKTRACE_BUF, cookie);
}
static void marshal_backtrace_footer(void) {
int cpu = smp_processor_id();
gator_buffer_write_packed_int(cpu, BACKTRACE_BUF, MESSAGE_END_BACKTRACE);
// Check and commit; commit is set to occur once buffer is 3/4 full
buffer_check(cpu, BACKTRACE_BUF);
}
static bool marshal_event_header(void) {
unsigned long flags, cpu = smp_processor_id();
bool retval = false;
local_irq_save(flags);
if (buffer_check_space(cpu, COUNTER_BUF, MAXSIZE_PACK32 + MAXSIZE_PACK64)) {
gator_buffer_write_packed_int(cpu, COUNTER_BUF, 0); // key of zero indicates a timestamp
gator_buffer_write_packed_int64(cpu, COUNTER_BUF, gator_get_time());
retval = true;
}
local_irq_restore(flags);
// Check and commit; commit is set to occur once buffer is 3/4 full
buffer_check(cpu, COUNTER_BUF);
return retval;
}
static void marshal_event(int len, int* buffer) {
unsigned long i, flags, cpu = smp_processor_id();
if (len <= 0)
return;
// length must be even since all data is a (key, value) pair
if (len & 0x1) {
pr_err("gator: invalid counter data detected and discarded");
return;
}
// events must be written in key,value pairs
for (i = 0; i < len; i += 2) {
local_irq_save(flags);
if (!buffer_check_space(cpu, COUNTER_BUF, MAXSIZE_PACK32 * 2)) {
local_irq_restore(flags);
break;
}
gator_buffer_write_packed_int(cpu, COUNTER_BUF, buffer[i]);
gator_buffer_write_packed_int(cpu, COUNTER_BUF, buffer[i + 1]);
local_irq_restore(flags);
}
// Check and commit; commit is set to occur once buffer is 3/4 full
buffer_check(cpu, COUNTER_BUF);
}
static void marshal_event64(int len, long long* buffer64) {
unsigned long i, flags, cpu = smp_processor_id();
if (len <= 0)
return;
// length must be even since all data is a (key, value) pair
if (len & 0x1) {
pr_err("gator: invalid counter data detected and discarded");
return;
}
// events must be written in key,value pairs
for (i = 0; i < len; i += 2) {
local_irq_save(flags);
if (!buffer_check_space(cpu, COUNTER_BUF, MAXSIZE_PACK64 * 2)) {
local_irq_restore(flags);
break;
}
gator_buffer_write_packed_int64(cpu, COUNTER_BUF, buffer64[i]);
gator_buffer_write_packed_int64(cpu, COUNTER_BUF, buffer64[i + 1]);
local_irq_restore(flags);
}
// Check and commit; commit is set to occur once buffer is 3/4 full
buffer_check(cpu, COUNTER_BUF);
}
#if GATOR_CPU_FREQ_SUPPORT
static void marshal_event_single(int core, int key, int value) {
unsigned long flags, cpu;
local_irq_save(flags);
cpu = smp_processor_id();
if (buffer_check_space(cpu, COUNTER2_BUF, MAXSIZE_PACK64 + MAXSIZE_PACK32 * 3)) {
gator_buffer_write_packed_int64(cpu, COUNTER2_BUF, gator_get_time());
gator_buffer_write_packed_int(cpu, COUNTER2_BUF, core);
gator_buffer_write_packed_int(cpu, COUNTER2_BUF, key);
gator_buffer_write_packed_int(cpu, COUNTER2_BUF, value);
}
local_irq_restore(flags);
// Check and commit; commit is set to occur once buffer is 3/4 full
buffer_check(cpu, COUNTER2_BUF);
}
#endif
static void marshal_sched_gpu(int type, int unit, int core, int tgid, int pid) {
unsigned long cpu = smp_processor_id(), flags;
if (!per_cpu(gator_buffer, cpu)[GPU_TRACE_BUF])
return;
local_irq_save(flags);
if (buffer_check_space(cpu, GPU_TRACE_BUF, MAXSIZE_PACK64 + 5 * MAXSIZE_PACK32)) {
gator_buffer_write_packed_int(cpu, GPU_TRACE_BUF, type);
gator_buffer_write_packed_int64(cpu, GPU_TRACE_BUF, gator_get_time());
gator_buffer_write_packed_int(cpu, GPU_TRACE_BUF, unit);
gator_buffer_write_packed_int(cpu, GPU_TRACE_BUF, core);
gator_buffer_write_packed_int(cpu, GPU_TRACE_BUF, tgid);
gator_buffer_write_packed_int(cpu, GPU_TRACE_BUF, pid);
}
local_irq_restore(flags);
// Check and commit; commit is set to occur once buffer is 3/4 full
buffer_check(cpu, GPU_TRACE_BUF);
}
static void marshal_sched_trace(int type, int pid, int tgid, int cookie, int state) {
unsigned long cpu = smp_processor_id(), flags;
if (!per_cpu(gator_buffer, cpu)[SCHED_TRACE_BUF])
return;
local_irq_save(flags);
if (buffer_check_space(cpu, SCHED_TRACE_BUF, MAXSIZE_PACK64 + 5 * MAXSIZE_PACK32)) {
gator_buffer_write_packed_int(cpu, SCHED_TRACE_BUF, type);
gator_buffer_write_packed_int64(cpu, SCHED_TRACE_BUF, gator_get_time());
gator_buffer_write_packed_int(cpu, SCHED_TRACE_BUF, pid);
gator_buffer_write_packed_int(cpu, SCHED_TRACE_BUF, tgid);
gator_buffer_write_packed_int(cpu, SCHED_TRACE_BUF, cookie);
gator_buffer_write_packed_int(cpu, SCHED_TRACE_BUF, state);
}
local_irq_restore(flags);
// Check and commit; commit is set to occur once buffer is 3/4 full
buffer_check(cpu, SCHED_TRACE_BUF);
}
#if GATOR_CPU_FREQ_SUPPORT
static void marshal_wfi(int core, int state) {
unsigned long flags, cpu;
local_irq_save(flags);
cpu = smp_processor_id();
if (buffer_check_space(cpu, WFI_BUF, MAXSIZE_PACK64 + MAXSIZE_PACK32 * 2)) {
gator_buffer_write_packed_int64(cpu, WFI_BUF, gator_get_time());
gator_buffer_write_packed_int(cpu, WFI_BUF, core);
gator_buffer_write_packed_int(cpu, WFI_BUF, state);
}
local_irq_restore(flags);
// Check and commit; commit is set to occur once buffer is 3/4 full
buffer_check(cpu, WFI_BUF);
}
#endif
static void marshal_frame(int cpu, int buftype, int frame) {
// add response type
if (gator_response_type > 0) {
gator_buffer_write_packed_int(cpu, buftype, gator_response_type);
}
// leave space for 4-byte unpacked length
per_cpu(gator_buffer_write, cpu)[buftype] = (per_cpu(gator_buffer_write, cpu)[buftype] + 4) & gator_buffer_mask[buftype];
// add frame type and core number
gator_buffer_write_packed_int(cpu, buftype, frame);
gator_buffer_write_packed_int(cpu, buftype, cpu);
}
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