static void sched_switch(int cpu, u64 timestamp, struct trace_entry *te)
{
struct per_pid *p = NULL, *prev_p;
struct sched_switch *sw = (void *)te;
prev_p = find_create_pid(sw->prev_pid);
p = find_create_pid(sw->next_pid);
if (prev_p->current && prev_p->current->state != TYPE_NONE)
pid_put_sample(sw->prev_pid, TYPE_RUNNING, cpu, prev_p->current->state_since, timestamp);
if (p && p->current) {
if (p->current->state != TYPE_NONE)
pid_put_sample(sw->next_pid, p->current->state, cpu, p->current->state_since, timestamp);
p->current->state_since = timestamp;
p->current->state = TYPE_RUNNING;
}
if (prev_p->current) {
prev_p->current->state = TYPE_NONE;
prev_p->current->state_since = timestamp;
if (sw->prev_state & 2)
prev_p->current->state = TYPE_BLOCKED;
if (sw->prev_state == 0)
prev_p->current->state = TYPE_WAITING;
}
}
static void pid_fork(int pid, int ppid, u64 timestamp)
{
struct per_pid *p, *pp;
p = find_create_pid(pid);
pp = find_create_pid(ppid);
p->ppid = ppid;
if (pp->current && pp->current->comm && !p->current)
pid_set_comm(pid, pp->current->comm);
p->start_time = timestamp;
if (p->current) {
p->current->start_time = timestamp;
p->current->state_since = timestamp;
}
}
static void pid_set_comm(int pid, char *comm)
{
struct per_pid *p;
struct per_pidcomm *c;
p = find_create_pid(pid);
c = p->all;
while (c) {
if (c->comm && strcmp(c->comm, comm) == 0) {
p->current = c;
return;
}
if (!c->comm) {
c->comm = strdup(comm);
p->current = c;
return;
}
c = c->next;
}
c = malloc(sizeof(struct per_pidcomm));
assert(c != NULL);
memset(c, 0, sizeof(struct per_pidcomm));
c->comm = strdup(comm);
p->current = c;
c->next = p->all;
p->all = c;
}
static void
sched_wakeup(int cpu, u64 timestamp, int pid, struct trace_entry *te)
{
struct wake_event *we;
struct per_pid *p;
struct wakeup_entry *wake = (void *)te;
we = malloc(sizeof(struct wake_event));
if (!we)
return;
memset(we, 0, sizeof(struct wake_event));
we->time = timestamp;
we->waker = pid;
if ((te->flags & TRACE_FLAG_HARDIRQ) || (te->flags & TRACE_FLAG_SOFTIRQ))
we->waker = -1;
we->wakee = wake->pid;
we->next = wake_events;
wake_events = we;
p = find_create_pid(we->wakee);
if (p && p->current && p->current->state == TYPE_NONE) {
p->current->state_since = timestamp;
p->current->state = TYPE_WAITING;
}
if (p && p->current && p->current->state == TYPE_BLOCKED) {
pid_put_sample(p->pid, p->current->state, cpu, p->current->state_since, timestamp);
p->current->state_since = timestamp;
p->current->state = TYPE_WAITING;
}
}
static void pid_exit(int pid, u64 timestamp)
{
struct per_pid *p;
p = find_create_pid(pid);
p->end_time = timestamp;
if (p->current)
p->current->end_time = timestamp;
}
static void
pid_put_sample(int pid, int type, unsigned int cpu, u64 start, u64 end)
{
struct per_pid *p;
struct per_pidcomm *c;
struct cpu_sample *sample;
p = find_create_pid(pid);
c = p->current;
if (!c) {
c = malloc(sizeof(struct per_pidcomm));
assert(c != NULL);
memset(c, 0, sizeof(struct per_pidcomm));
p->current = c;
c->next = p->all;
p->all = c;
}
sample = malloc(sizeof(struct cpu_sample));
assert(sample != NULL);
memset(sample, 0, sizeof(struct cpu_sample));
sample->start_time = start;
sample->end_time = end;
sample->type = type;
sample->next = c->samples;
sample->cpu = cpu;
c->samples = sample;
if (sample->type == TYPE_RUNNING && end > start && start > 0) {
c->total_time += (end-start);
p->total_time += (end-start);
}
if (c->start_time == 0 || c->start_time > start)
c->start_time = start;
if (p->start_time == 0 || p->start_time > start)
p->start_time = start;
if (cpu > numcpus)
numcpus = cpu;
}
static void pid_put_sample(struct timechart *tchart, int pid, int type,
unsigned int cpu, u64 start, u64 end,
const char *backtrace)
{
struct per_pid *p;
struct per_pidcomm *c;
struct cpu_sample *sample;
p = find_create_pid(tchart, pid);
c = p->current;
if (!c) {
c = zalloc(sizeof(*c));
assert(c != NULL);
p->current = c;
c->next = p->all;
p->all = c;
}
sample = zalloc(sizeof(*sample));
assert(sample != NULL);
sample->start_time = start;
sample->end_time = end;
sample->type = type;
sample->next = c->samples;
sample->cpu = cpu;
sample->backtrace = backtrace;
c->samples = sample;
if (sample->type == TYPE_RUNNING && end > start && start > 0) {
c->total_time += (end-start);
p->total_time += (end-start);
}
if (c->start_time == 0 || c->start_time > start)
c->start_time = start;
if (p->start_time == 0 || p->start_time > start)
p->start_time = start;
}
