static void kernel_syscall_entry_process(struct ltt_module *mod,
struct parse_result *res, int pass)
{
unsigned int ip, id;
kernel_common(res, pass);
if (sscanf(res->values, " ip = 0x%x, syscall_id = %u",
&ip, &id) != 2) {
PARSE_ERROR(mod, res->values);
return;
}
if (pass == 1) {
atag_store(ip);
}
if (pass == 2) {
struct ltt_trace *current_process;
current_process = find_task_trace(res->pid);
emit_trace(current_process, (union ltt_value)PROCESS_KERNEL);
current_process->value = (union ltt_value)PROCESS_KERNEL;
if (id < sizeof(syscall_name)/sizeof(syscall_name[0]))
emit_trace(¤t_process[1], (union ltt_value)syscall_name[id]);
else
emit_trace(¤t_process[1], (union ltt_value)"syscall %d", id);
emit_trace(&syscall_id, (union ltt_value)id);
emit_trace(&syscall_pc, (union ltt_value)ip);
}
}
static void kernel_common(struct parse_result *res, int pass)
{
static char old_mode [15];
static double start_time;
if (pass == 1) {
init_traces();
find_or_add_task_trace(res->pname, res->pid, 0);
}
if (pass == 2) {
if (strcmp(old_mode, res->mode))
emit_trace(&mode, (union ltt_value)res->mode);
memcpy(old_mode, res->mode, sizeof(old_mode));
old_mode[sizeof(old_mode)-1] = 0;
/* 300 ms average for cpu load */
if (res->clock - start_time > 0.3) {
double idle_run = emit_cpu_idle_state(res, (union ltt_value)(char *)NULL);
if (start_time > 0) {
emit_trace(&cpu_load, (union ltt_value)(1.0-idle_run/(res->clock - start_time)));
}
start_time = res->clock;
}
}
}
static void kernel_softirq_entry_process(struct ltt_module *mod,
struct parse_result *res, int pass)
{
int id;
char *s;
kernel_common(res, pass);
if (sscanf(res->values, " softirq_id = %d [%m[^]]", &id, &s) != 2) {
PARSE_ERROR(mod, res->values);
return;
}
if (pass == 2) {
emit_trace(&sirq[0], (union ltt_value)SOFTIRQ_RUNNING);
emit_cpu_idle_state(res, (union ltt_value)IDLE_CPU_PREEMPT);
if (id < sizeof(sofirq_tag)/sizeof(char *) && sofirq_tag[id])
emit_trace(&sirq[1], (union ltt_value)sofirq_tag[id]);
else
emit_trace(&sirq[1], (union ltt_value)"softirq %d", id);
emit_trace(&sirq[2], (union ltt_value)s);
softirqstate = SOFTIRQS_RUN;
/* stat stuff */
strncpy(softirqtask, s, sizeof(softirqtask));
softirqtask[sizeof(softirqtask)-1] = 0;
softirqtime = res->clock;
/* end stat stuff */
}
free(s);
}
static void kernel_page_fault_get_user_exit_process(struct ltt_module *mod,
struct parse_result *res, int pass)
{
if (pass == 1) {
init_traces();
}
if (pass == 2) {
emit_trace(&trace_fault[2], (union ltt_value)LT_IDLE);
}
}
static void kernel_tasklet_low_exit_process(struct ltt_module *mod,
struct parse_result *res, int pass)
{
kernel_common(res, pass);
if (pass == 1) {
}
if (pass == 2) {
emit_trace(&tlow[0], (union ltt_value)LT_IDLE);
}
}
static void kernel_sched_try_wakeup_process(struct ltt_module *mod,
struct parse_result *res, int pass)
{
unsigned int pid, cpu_id, state;
kernel_common(res, pass);
if (sscanf(res->values, " pid = %u, cpu_id = %u, state = %u",
&pid, &cpu_id, &state) != 3) {
PARSE_ERROR(mod, res->values);
return;
}
if (pass == 2) {
emit_trace(&sched_event, (union ltt_value)"%d try wakeup %d", res->pid, pid);
if (res->pid != pid) {
struct ltt_trace *next_process;
next_process = find_task_trace(pid);
emit_trace(next_process, (union ltt_value)PROCESS_WAKEUP);
}
}
}
static void kernel_page_fault_exit_process(struct ltt_module *mod,
struct parse_result *res, int pass)
{
int fault;
if (pass == 1) {
init_traces();
}
if (sscanf(res->values, " res = %d",
&fault) != 1) {
PARSE_ERROR(mod, res->values);
return;
}
if (pass == 2) {
emit_trace(&trace_fault[0], (union ltt_value)LT_IDLE);
emit_trace(&trace_fault[1], (union ltt_value)"-> %d",
fault);
}
}
static void kernel_page_fault_get_user_entry_process(struct ltt_module *mod,
struct parse_result *res, int pass)
{
int wr;
unsigned long long address;
if (pass == 1) {
init_traces();
}
if (sscanf(res->values, " address = %llx, write_access = %d",
&address, &wr) != 2) {
PARSE_ERROR(mod, res->values);
return;
}
if (pass == 2) {
emit_trace(&trace_fault[2], (union ltt_value)(wr?LT_S2:LT_S0));
emit_trace(&trace_fault[3], (union ltt_value)"%c@0x%08x",
(wr)? 'W' : 'R', (uint32_t)address);
}
}
static void kernel_softirq_raise_process(struct ltt_module *mod,
struct parse_result *res, int pass)
{
int id;
kernel_common(res, pass);
if (sscanf(res->values, " softirq_id = %d", &id) != 1) {
PARSE_ERROR(mod, res->values);
return;
}
if (pass == 2) {
if (softirqstate == SOFTIRQS_IDLE)
emit_trace(&sirq[0], (union ltt_value)SOFTIRQ_RAISING);
if (id < sizeof(sofirq_tag)/sizeof(char *) && sofirq_tag[id])
emit_trace(&sirq[1], (union ltt_value)"! %s", sofirq_tag[id]);
else
emit_trace(&sirq[1], (union ltt_value)"raise %d", id);
softirqstate = SOFTIRQS_RAISE;
}
}
static void kernel_irq_exit_process(struct ltt_module *mod,
struct parse_result *res, int pass)
{
kernel_common(res, pass);
if ((pass == 2) && (irqlevel > 0)) {
emit_trace(&trace[irqtab[--irqlevel]], (union ltt_value)IRQ_IDLE);
if (irqlevel > 0) {
emit_trace(&trace[irqtab[irqlevel-1]], (union ltt_value)IRQ_RUNNING);
}
if (irqlevel == 0 && idle_cpu_state == IDLE_RUNNING)
emit_cpu_idle_state(res, (union ltt_value)IDLE_CPU_RUNNING);
else
emit_cpu_idle_state(res, (union ltt_value)IDLE_CPU_IDLE);
/* stat stuff */
/* we allow up to 0.1ms irq */
if (irqlevel == 0 && res->clock - irqtime > 0.0001)
TDIAG(res, "long irq (%s) : %fs!!!\n", irq_tag[irqtab[0]],
res->clock - irqtime);
/* end stat stuff */
}
}
static void kernel_syscall_exit_process(struct ltt_module *mod,
struct parse_result *res, int pass)
{
int ret;
kernel_common(res, pass);
if (sscanf(res->values, " ret = %d",
&ret) != 1) {
PARSE_ERROR(mod, res->values);
return;
}
if (pass == 2) {
struct ltt_trace *current_process;
current_process = find_task_trace(res->pid);
emit_trace(current_process, (union ltt_value)PROCESS_USER);
current_process->value = (union ltt_value)PROCESS_USER;
/* ret is not valid ... */
emit_trace(¤t_process[1], (union ltt_value)"->%d", ret);
}
}
static void kernel_page_fault_entry_process(struct ltt_module *mod,
struct parse_result *res, int pass)
{
int wr;
unsigned long ip;
unsigned long address;
if (pass == 1) {
init_traces();
}
if (sscanf(res->values, " ip = %lx, address = %lx, trap_id = 14, write_access = %d",
&ip, &address, &wr) != 3) {
PARSE_ERROR(mod, res->values);
return;
}
if (pass == 2) {
emit_trace(&trace_fault[0], (union ltt_value)(wr?LT_S2:LT_S0));
emit_trace(&trace_fault[1], (union ltt_value)"0x%08x@%c0x%08x",
ip, (wr)? 'W' : 'R', (uint32_t)address);
}
}
static void userspace_message_process(const char *modname, int pass,
double clock, int cpu, void *args)
{
const char * str = get_arg_str(args, "message");
if (pass == 1)
init_trace(&trace_g, TG_PROCESS, 0.1,
TRACE_SYM_F_STRING, "user event");
if (pass == 2)
emit_trace(&trace_g, (union ltt_value)"%s", str);
}
static void kernel_softirq_exit_process(struct ltt_module *mod,
struct parse_result *res, int pass)
{
kernel_common(res, pass);
if (pass == 2) {
if (softirqstate == SOFTIRQS_RAISE)
emit_trace(&sirq[0], (union ltt_value)SOFTIRQ_RAISING);
else
emit_trace(&sirq[0], (union ltt_value)SOFTIRQ_IDLE);
if (idle_cpu_state == IDLE_RUNNING)
emit_cpu_idle_state(res, (union ltt_value)IDLE_CPU_RUNNING);
else
emit_cpu_idle_state(res, (union ltt_value)IDLE_CPU_IDLE);
softirqstate = SOFTIRQS_IDLE;
/* stat stuff */
/* we allow up to 0.7ms softirq */
if (res->clock - softirqtime > 0.0007)
TDIAG(res, "long softirq(%s) : %fs!!!\n", softirqtask,
res->clock - softirqtime);
/* end stat stuff */
}
}
static void kernel_parrot_evt_stop_process(struct ltt_module *mod,
struct parse_result *res, int pass)
{
int id;
kernel_common(res, pass);
if (sscanf(res->values, " id = %d", &id) != 1) {
PARSE_ERROR(mod, res->values);
return;
}
if (pass == 1) {
init_traces();
if (id < sizeof(parrot_evt_n)/sizeof(parrot_evt_n[0]) && id >= 0)
init_trace(&parrot_evt_n[id], TG_PROCESS, 0.0+0.1*id, TRACE_SYM_F_BITS, "kernel event %d", id);
}
if (pass == 2) {
emit_trace(&parrot_evt, (union ltt_value)"%d->", id);
if (id < sizeof(parrot_evt_n)/sizeof(parrot_evt_n[0]) && id >= 0)
emit_trace(&parrot_evt_n[id], (union ltt_value)LT_IDLE);
}
}
static void kernel_tasklet_low_entry_process(struct ltt_module *mod,
struct parse_result *res, int pass)
{
unsigned int data, func;
kernel_common(res, pass);
if (sscanf(res->values, " func = 0x%x, data = %u", &func, &data) != 2) {
PARSE_ERROR(mod, res->values);
return;
}
if (pass == 1) {
atag_store(func);
}
if (pass == 2) {
emit_trace(&tlow[0], (union ltt_value)LT_S0);
emit_trace(&tlow[1], (union ltt_value)func);
if (atag_enabled) {
strncpy(softirqtask, atag_get(func), sizeof(softirqtask));
softirqtask[sizeof(softirqtask)-1] = 0;
}
}
}
static void kernel_sched_schedule_process(struct ltt_module *mod,
struct parse_result *res, int pass)
{
unsigned int prev_pid, next_pid, prev_state;
kernel_common(res, pass);
if (sscanf(res->values, " prev_pid = %u, next_pid = %u, prev_state = %u",
&prev_pid, &next_pid, &prev_state) != 3) {
PARSE_ERROR(mod, res->values);
return;
}
if (pass == 2) {
struct ltt_trace *current_process;
current_process = find_task_trace(prev_pid);
emit_trace(current_process,(union ltt_value)PROCESS_IDLE);
if (prev_pid == 0) {
emit_cpu_idle_state(res, (union ltt_value)IDLE_CPU_IDLE);
idle_cpu_state = IDLE_IDLE;
}
current_process = find_task_trace(next_pid);
/* XXX this is often buggy : some process are in SYCALL mode while running
in userspace ...
*/
if(current_process->value.state)
emit_trace(current_process, current_process->value);
else if (strcmp(res->mode, "USER_MODE") == 0)
emit_trace(current_process, (union ltt_value)PROCESS_USER);
else
emit_trace(current_process, (union ltt_value)PROCESS_KERNEL);
if (next_pid == 0) {
emit_cpu_idle_state(res, (union ltt_value)IDLE_CPU_RUNNING);
idle_cpu_state = IDLE_RUNNING;
}
}
}
static void kernel_sched_wakeup_new_task_process(struct ltt_module *mod,
struct parse_result *res, int pass)
{
unsigned int pid, cpu_id, state;
kernel_common(res, pass);
if (sscanf(res->values, " pid = %u, state = %u, cpu_id = %u",
&pid, &state, &cpu_id) != 3) {
PARSE_ERROR(mod, res->values);
return;
}
if (pass == 2) {
emit_trace(&sched_event, (union ltt_value)"new task %d", pid);
}
}
static void kernel_send_signal_process(struct ltt_module *mod,
struct parse_result *res, int pass)
{
unsigned int pid, signal;
kernel_common(res, pass);
if (sscanf(res->values, " pid = %u, signal = %u",
&pid, &signal) != 2) {
PARSE_ERROR(mod, res->values);
return;
}
if (pass == 2) {
emit_trace(&sched_event, (union ltt_value)"%d send signal %d to pid %d",
res->pid, signal, pid);
}
}
static void userspace_event_stop_process(const char *modname, int pass,
double clock, int cpu, void *args)
{
int num = (int)get_arg_i64(args, "event_stop");
if (pass == 1) {
if (num < (int)(sizeof(traces)/sizeof(traces[0])) && num >= 0)
init_trace(&traces[num], TG_PROCESS, 0.1+0.1*num,
TRACE_SYM_F_BITS, "user event %d", num);
}
if (pass == 2) {
if (num < (int)(sizeof(traces)/sizeof(traces[0])) && num >= 0) {
emit_trace(&traces[num], (union ltt_value)LT_IDLE);
}
}
}
static void kernel_process_free_process(struct ltt_module *mod,
struct parse_result *res, int pass)
{
int pid;
kernel_common(res, pass);
if (sscanf(res->values, " pid = %d",
&pid) != 1) {
PARSE_ERROR(mod, res->values);
return;
}
if (pass == 2) {
struct ltt_trace *current_process;
current_process = find_task_trace(pid);
emit_trace(current_process, (union ltt_value)PROCESS_DEAD);
}
}
static void ardupilot_end_process(const char *modname, int pass,
double clock, int cpu, void *args)
{
const char *name = get_arg_str(args, "name_field");
struct perf_apm *perf = find_or_add_perf(name);
if (pass == 1) {
init_trace(&perf->trace,
TG_APM,
1 + 0.1 * perf->pos,
TRACE_SYM_F_BITS,
"%s",
name);
}
if (pass == 2) {
emit_trace(&perf->trace, (union ltt_value)LT_IDLE);
}
}
static void kernel_timer_update_time_process(struct ltt_module *mod,
struct parse_result *res, int pass)
{
unsigned int c_jiffies;
unsigned long long c_jiffies64;
kernel_common(res, pass);
if (sscanf(res->values, " jiffies = %llu",
&c_jiffies64) != 1) {
PARSE_ERROR(mod, res->values);
return;
}
c_jiffies = c_jiffies64 & 0xffffffff;
if (pass == 2) {
static unsigned int old_jiffies;
static double jiffies_clock;
static double jiffies_diff;
if (old_jiffies && old_jiffies+1 != c_jiffies)
TDIAG(res, "missing jiffies jump from %x to %x (broken trace ?)\n",
old_jiffies, c_jiffies);
if (jiffies_clock > 0) {
double diff = res->clock - jiffies_clock;
if (jiffies_diff > 0) {
/* we allow a jitter of 0,1 ms */
if (diff > jiffies_diff + 0.0001 ||
diff < jiffies_diff - 0.0001) {
TDIAG(res, "unstable jiffies for %x took %fs (instead of %fs)\n", old_jiffies, diff, jiffies_diff);
}
}
else {
jiffies_diff = diff;
TDIAG(res, "set jiffies times to %fs\n", jiffies_diff);
}
}
jiffies_clock = res->clock;
old_jiffies = c_jiffies;
emit_trace(&jiffies, (union ltt_value)c_jiffies);
}
}
static void kernel_printk_process(struct ltt_module *mod,
struct parse_result *res, int pass)
{
unsigned int ip;
kernel_common(res, pass);
if (sscanf(res->values, " ip = 0x%x",
&ip) != 1) {
PARSE_ERROR(mod, res->values);
return;
}
if (pass == 1) {
atag_store(ip);
}
if (pass == 2) {
emit_trace(&printk_pc, (union ltt_value)ip);
}
}
static double emit_cpu_idle_state(struct parse_result *res, union ltt_value val)
{
static double run_start;
static double total_run;
double ret;
if (val.state) {
emit_trace(&idle_cpu, val);
//printf("clock %f %s start %f total %f\n", res->clock, val.state, run_start, total_run);
/* if running account the time */
if (strcmp(val.state, IRQ_RUNNING) == 0) {
/* if already started, do nothing */
if (run_start == 0)
run_start = res->clock;
}
/* if stoping record the idle time */
else {
/* if already stop, do nothing */
if (run_start > 0) {
total_run += res->clock - run_start;
run_start = 0;
}
}
//printf("%s start %f total %f\n", val.state, run_start, total_run);
ret = total_run;
}
/* give the total idle time and reset counter */
else {
/* idle is running */
if (run_start > 0) {
total_run += res->clock - run_start;
run_start = res->clock;
}
ret = total_run;
/* reset counter */
total_run = 0;
//printf("total clock : %f ret : %f\n", res->clock, ret);
}
return ret;
}
static void task_state_process_state_process(struct ltt_module *mod,
struct parse_result *res, int pass)
{
char *s;
uint32_t pid, parent_pid, type, mode, submode, status, tgid;
if (sscanf(res->values, " pid = %d, parent_pid = %d, name = \"%m[^\"]\", "
"type = %d, mode = %d, submode = %d, status = %d, tgid = %d",
&pid, &parent_pid, &s, &type, &mode, &submode, &status,
&tgid) != 8) {
PARSE_ERROR(mod, res->values);
return;
}
if (pass == 1) {
find_or_add_task_trace(clean_name(s), pid, tgid)/*[0].group = 0*/;
}
if (pass == 2) {
//XXX
if (status == 1)
emit_trace(find_task_trace(pid), (union ltt_value)LT_S0);
}
free(s);
}
static void kernel_irq_entry_process(struct ltt_module *mod,
struct parse_result *res, int pass)
{
int kernel_mode;
unsigned int ip,irq;
#if defined(ARCH_2_6_3X)
void *handler;
#endif
kernel_common(res, pass);
#if defined(ARCH_2_6_3X)
if (sscanf(res->values, " ip = %u, handler = %p, irq_id = %u, kernel_mode = %d",
&ip, &handler, &irq, &kernel_mode) != 4) {
PARSE_ERROR(mod, res->values);
return;
}
#else
if (sscanf(res->values, " ip = %u, irq_id = %u, kernel_mode = %d",
&ip, &irq, &kernel_mode) != 3) {
PARSE_ERROR(mod, res->values);
return;
}
#endif
if (irq >= MAX_IRQS) {
DIAG("invalid IRQ vector ? (%d)\n", irq);
return;
}
if (pass == 1 && irq_tag[irq]) {
init_trace(&trace[irq], TG_IRQ, 1.0+irq, TRACE_SYM_F_BITS, irq_tag[irq]);
atag_store(ip);
}
if (pass == 2) {
if (!irq_tag[irq]) {
char name[20];
snprintf(name, sizeof(name), "irq %d", irq);
init_trace(&trace[irq], TG_IRQ, 1.0+irq, TRACE_SYM_F_BITS, strdup(name));
}
if (irqlevel >= MAX_IRQS) {
DIAG("IRQ nesting level is too high (%d)\n", irqlevel);
return;
}
if (irqlevel > 0 && irq == irqtab[irqlevel-1]) {
DIAG("IRQ reentering in same irq (broken trace ?) %d\n", irqlevel);
return;
}
if (irqlevel > 0) {
TDIAG(res, "nesting irq %s -> %s\n", irq_tag[irqtab[irqlevel-1]],
irq_tag[irq]);
emit_trace(&trace[irqtab[irqlevel-1]], (union ltt_value)IRQ_PREEMPT);
}
emit_trace(&trace[irq], (union ltt_value)IRQ_RUNNING);
emit_trace(&irq_pc, (union ltt_value)ip);
irqtab[irqlevel++] = irq;
if (irqlevel == 1)
emit_cpu_idle_state(res, (union ltt_value)IDLE_CPU_PREEMPT);
/* stat stuff */
#ifndef ARCH_2_6_3X
if (irq == 19) {
static double timer3clock;
static double timer3diff;
if (timer3clock > 0) {
double diff = res->clock - timer3clock;
if (timer3diff > 0) {
/* we allow a jitter of 0,1 ms */
if (diff > timer3diff + 0.0001) {
TDIAG(res, "late irq !!! system timer took %fs (instead of %fs)\n", diff, timer3diff);
}
}
else
timer3diff = diff;
}
timer3clock = res->clock;
}
#endif
/* only account on the first irq */
if (irqlevel == 1)
irqtime = res->clock;
/* end stat stuff */
}
}