LTTV_CPU_IDLE,
LTTV_CPU_BUSY,
LTTV_CPU_IRQ,
+ LTTV_CPU_SOFT_IRQ,
LTTV_CPU_TRAP;
LttvIRQMode
LTTV_STATE_RESOURCE_CPUS,
LTTV_STATE_RESOURCE_CPUS_COUNT,
LTTV_STATE_RESOURCE_IRQS,
+ LTTV_STATE_RESOURCE_SOFT_IRQS,
+ LTTV_STATE_RESOURCE_TRAPS,
LTTV_STATE_RESOURCE_BLKDEVS;
static void create_max_time(LttvTraceState *tcs);
g_hash_table_destroy(usertraces);
}
-
+gboolean rettrue(gpointer key, gpointer value, gpointer user_data)
+{
+ return TRUE;
+}
static void
restore_init_state(LttvTraceState *self)
{
- guint i, nb_cpus, nb_irqs;
+ guint i, nb_cpus, nb_irqs, nb_soft_irqs, nb_traps;
//LttvTracefileState *tfcs;
nb_cpus = ltt_trace_get_num_cpu(self->parent.t);
nb_irqs = self->nb_irqs;
+ nb_soft_irqs = self->nb_soft_irqs;
+ nb_traps = self->nb_traps;
/* Put the per cpu running_process to beginning state : process 0. */
for(i=0; i< nb_cpus; i++) {
g_array_remove_range(self->irq_states[i].mode_stack, 0, self->irq_states[i].mode_stack->len);
}
+ /* reset softirq states */
+ for(i=0; i<nb_soft_irqs; i++) {
+ self->soft_irq_states[i].running = 0;
+ }
+
+ /* reset trap states */
+ for(i=0; i<nb_traps; i++) {
+ self->trap_states[i].running = 0;
+ }
+
/* reset bdev states */
g_hash_table_foreach(self->bdev_states, bdevstate_free_cb, NULL);
- g_hash_table_steal_all(self->bdev_states);
+ //g_hash_table_steal_all(self->bdev_states);
+ g_hash_table_foreach_steal(self->bdev_states, rettrue, NULL);
#if 0
nb_tracefile = self->parent.tracefiles->len;
g_assert(tcs->irq_states[j].mode_stack != NULL);
}
+ /* init soft irq stuff */
+ /* the kernel has a statically fixed max of 32 softirqs */
+ tcs->soft_irq_states = g_new(LttvSoftIRQState, tcs->nb_soft_irqs);
+
+ /* init trap stuff */
+ tcs->trap_states = g_new(LttvTrapState, tcs->nb_traps);
+
/* init bdev resource stuff */
tcs->bdev_states = g_hash_table_new(g_int_hash, g_int_equal);
process = (LttvProcessState *)value;
fprintf(fp,
-" <PROCESS CORE=%p PID=%u TGID=%u PPID=%u TYPE=\"%s\" CTIME_S=%lu CTIME_NS=%lu ITIME_S=%lu ITIME_NS=%lu NAME=\"%s\" BRAND=\"%s\" CPU=\"%u\">\n",
+" <PROCESS CORE=%p PID=%u TGID=%u PPID=%u TYPE=\"%s\" CTIME_S=%lu CTIME_NS=%lu ITIME_S=%lu ITIME_NS=%lu NAME=\"%s\" BRAND=\"%s\" CPU=\"%u\" FREE_EVENTS=\"%u\">\n",
process, process->pid, process->tgid, process->ppid,
g_quark_to_string(process->type),
process->creation_time.tv_sec,
process->insertion_time.tv_nsec,
g_quark_to_string(process->name),
g_quark_to_string(process->brand),
- process->cpu);
+ process->cpu, process->free_events);
for(i = 0 ; i < process->execution_stack->len; i++) {
es = &g_array_index(process->execution_stack, LttvExecutionState, i);
//fputc('\0', fp);
fwrite(&process->brand, sizeof(process->brand), 1, fp);
fwrite(&process->pid, sizeof(process->pid), 1, fp);
+ fwrite(&process->free_events, sizeof(process->free_events), 1, fp);
fwrite(&process->tgid, sizeof(process->tgid), 1, fp);
fwrite(&process->ppid, sizeof(process->ppid), 1, fp);
fwrite(&process->cpu, sizeof(process->cpu), 1, fp);
fread(&tmp.name, sizeof(tmp.name), 1, fp);
fread(&tmp.brand, sizeof(tmp.brand), 1, fp);
fread(&tmp.pid, sizeof(tmp.pid), 1, fp);
+ fread(&tmp.free_events, sizeof(tmp.free_events), 1, fp);
fread(&tmp.tgid, sizeof(tmp.tgid), 1, fp);
fread(&tmp.ppid, sizeof(tmp.ppid), 1, fp);
fread(&tmp.cpu, sizeof(tmp.cpu), 1, fp);
(gchar*)g_ptr_array_index(quarktable, tmp.brand));
process->name =
g_quark_from_string((gchar*)g_ptr_array_index(quarktable, tmp.name));
-
+ process->free_events = tmp.free_events;
do {
if(feof(fp) || ferror(fp)) goto end_loop;
guint i;
for(i=0; i<n; i++) {
- g_array_free(states[i].mode_stack, FALSE);
+ g_array_free(states[i].mode_stack, TRUE);
}
g_free(states);
guint i;
for(i=0; i<n; i++) {
- g_array_free(states[i].mode_stack, FALSE);
+ g_array_free(states[i].mode_stack, TRUE);
+ }
+
+ g_free(states);
+}
+
+static LttvSoftIRQState *lttv_state_copy_soft_irq_states(LttvSoftIRQState *states, guint n)
+{
+ guint i;
+ LttvSoftIRQState *retval;
+
+ retval = g_malloc(n*sizeof(LttvSoftIRQState));
+
+ for(i=0; i<n; i++) {
+ retval[i].running = states[i].running;
+ }
+
+ return retval;
+}
+
+static void lttv_state_free_soft_irq_states(LttvSoftIRQState *states, guint n)
+{
+ g_free(states);
+}
+
+static LttvTrapState *lttv_state_copy_trap_states(LttvTrapState *states, guint n)
+{
+ guint i;
+ LttvTrapState *retval;
+
+ retval = g_malloc(n*sizeof(LttvTrapState));
+
+ for(i=0; i<n; i++) {
+ retval[i].running = states[i].running;
}
+ return retval;
+}
+
+static void lttv_state_free_trap_states(LttvTrapState *states, guint n)
+{
g_free(states);
}
static void bdevstate_free(LttvBdevState *bds)
{
- g_array_free(bds->mode_stack, FALSE);
+ g_array_free(bds->mode_stack, TRUE);
g_free(bds);
}
static void state_save(LttvTraceState *self, LttvAttribute *container)
{
- guint i, nb_tracefile, nb_cpus, nb_irqs;
+ guint i, nb_tracefile, nb_cpus, nb_irqs, nb_soft_irqs, nb_traps;
LttvTracefileState *tfcs;
*(value.v_pointer) = lttv_state_copy_irq_states(self->irq_states, nb_irqs);
}
+ /* save the soft irq state */
+ nb_soft_irqs = self->nb_soft_irqs;
+ {
+ value = lttv_attribute_add(container, LTTV_STATE_RESOURCE_SOFT_IRQS,
+ LTTV_POINTER);
+ *(value.v_pointer) = lttv_state_copy_soft_irq_states(self->soft_irq_states, nb_soft_irqs);
+ }
+
+ /* save the trap state */
+ nb_traps = self->nb_traps;
+ {
+ value = lttv_attribute_add(container, LTTV_STATE_RESOURCE_TRAPS,
+ LTTV_POINTER);
+ *(value.v_pointer) = lttv_state_copy_trap_states(self->trap_states, nb_traps);
+ }
+
/* save the blkdev states */
value = lttv_attribute_add(container, LTTV_STATE_RESOURCE_BLKDEVS,
LTTV_POINTER);
static void state_restore(LttvTraceState *self, LttvAttribute *container)
{
- guint i, nb_tracefile, pid, nb_cpus, nb_irqs;
+ guint i, nb_tracefile, pid, nb_cpus, nb_irqs, nb_soft_irqs, nb_traps;
LttvTracefileState *tfcs;
lttv_state_free_irq_states(self->irq_states, nb_irqs);
self->irq_states = lttv_state_copy_irq_states(*(value.v_pointer), nb_irqs);
+ /* restore soft irq resource states */
+ nb_soft_irqs = self->nb_soft_irqs;
+ type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_SOFT_IRQS, &value);
+ g_assert(type == LTTV_POINTER);
+ lttv_state_free_soft_irq_states(self->soft_irq_states, nb_soft_irqs);
+ self->soft_irq_states = lttv_state_copy_soft_irq_states(*(value.v_pointer), nb_soft_irqs);
+
+ /* restore trap resource states */
+ nb_traps = self->nb_traps;
+ type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_TRAPS, &value);
+ g_assert(type == LTTV_POINTER);
+ lttv_state_free_trap_states(self->trap_states, nb_traps);
+ self->trap_states = lttv_state_copy_trap_states(*(value.v_pointer), nb_traps);
+
/* restore the blkdev states */
type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_BLKDEVS, &value);
g_assert(type == LTTV_POINTER);
}
*/
- name_tables->nb_softirqs = 256;
- name_tables->soft_irq_names = g_new(GQuark, 256);
- for(i = 0 ; i < 256 ; i++) {
+ /* the kernel is limited to 32 statically defined softirqs */
+ name_tables->nb_softirqs = 32;
+ name_tables->soft_irq_names = g_new(GQuark, name_tables->nb_softirqs);
+ for(i = 0 ; i < name_tables->nb_softirqs ; i++) {
g_string_printf(fe_name, "softirq %d", i);
name_tables->soft_irq_names[i] = g_quark_from_string(fe_name->str);
}
tcs->irq_names = name_tables->irq_names;
tcs->soft_irq_names = name_tables->soft_irq_names;
tcs->nb_irqs = name_tables->nb_irqs;
- tcs->nb_softirqs = name_tables->nb_softirqs;
+ tcs->nb_soft_irqs = name_tables->nb_softirqs;
}
process->creation_time.tv_nsec);
process->pid_time = g_quark_from_string(buffer);
process->cpu = cpu;
+ process->free_events = 0;
//process->last_cpu = tfs->cpu_name;
//process->last_cpu_index = ltt_tracefile_num(((LttvTracefileContext*)tfs)->tf);
process->execution_stack = g_array_sized_new(FALSE, FALSE,
* the parent waits for its child terminaison, but may also happen in special
* cases in the child's exit : when the parent ignores its children SIGCCHLD or
* has the flag SA_NOCLDWAIT. It can also happen when the child is part
- * of a killed thread ground, but isn't the leader.
+ * of a killed thread group, but isn't the leader.
*/
-static void exit_process(LttvTracefileState *tfs, LttvProcessState *process)
+static int exit_process(LttvTracefileState *tfs, LttvProcessState *process)
{
LttvTraceState *ts = LTTV_TRACE_STATE(tfs->parent.t_context);
LttvProcessState key;
+ /* Wait for both schedule with exit dead and process free to happen.
+ * They can happen in any order. */
+ if (++(process->free_events) < 2)
+ return 0;
+
key.pid = process->pid;
key.cpu = process->cpu;
g_hash_table_remove(ts->processes, &key);
g_array_free(process->execution_stack, TRUE);
g_array_free(process->user_stack, TRUE);
g_free(process);
+ return 1;
}
static gboolean trap_entry(void *hook_data, void *call_data)
{
LttvTracefileState *s = (LttvTracefileState *)call_data;
+ LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
LttvTraceHook *th = (LttvTraceHook *)hook_data;
struct marker_field *f = lttv_trace_get_hook_field(th, 0);
/* update cpu status */
cpu_push_mode(s->cpu_state, LTTV_CPU_TRAP);
+ /* update trap status */
+ s->cpu_state->last_trap = trap;
+ ts->trap_states[trap].running++;
+
return FALSE;
}
static gboolean trap_exit(void *hook_data, void *call_data)
{
LttvTracefileState *s = (LttvTracefileState *)call_data;
+ LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
+ guint trap = s->cpu_state->last_trap;
pop_state(s, LTTV_STATE_TRAP);
/* update cpu status */
cpu_pop_mode(s->cpu_state);
+ /* update trap status */
+ if(ts->trap_states[trap].running)
+ ts->trap_states[trap].running--;
+
return FALSE;
}
static gboolean soft_irq_exit(void *hook_data, void *call_data)
{
LttvTracefileState *s = (LttvTracefileState *)call_data;
+ LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
+ guint softirq = s->cpu_state->last_soft_irq;
pop_state(s, LTTV_STATE_SOFT_IRQ);
- return FALSE;
-}
+ /* update softirq status */
+ if(ts->soft_irq_states[softirq].running)
+ ts->soft_irq_states[softirq].running--;
+ /* update cpu status */
+ cpu_pop_mode(s->cpu_state);
+
+ return FALSE;
+}
static gboolean irq_exit(void *hook_data, void *call_data)
{
static gboolean soft_irq_entry(void *hook_data, void *call_data)
{
LttvTracefileState *s = (LttvTracefileState *)call_data;
+ LttvTraceState *ts = (LttvTraceState *)s->parent.t_context;
LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
//guint8 ev_id = ltt_event_eventtype_id(e);
LttvTraceHook *th = (LttvTraceHook *)hook_data;
LttvExecutionSubmode submode;
guint64 softirq = ltt_event_get_long_unsigned(e, f);
- guint64 nb_softirqs = ((LttvTraceState *)(s->parent.t_context))->nb_softirqs;
+ guint64 nb_softirqs = ((LttvTraceState *)(s->parent.t_context))->nb_soft_irqs;
if(softirq < nb_softirqs) {
submode = ((LttvTraceState *)(s->parent.t_context))->soft_irq_names[softirq];
/* Do something with the info about being in user or system mode when int? */
push_state(s, LTTV_STATE_SOFT_IRQ, submode);
+
+ /* update cpu status */
+ cpu_push_mode(s->cpu_state, LTTV_CPU_SOFT_IRQ);
+
+ /* update softirq status */
+ s->cpu_state->last_soft_irq = softirq;
+ ts->soft_irq_states[softirq].running++;
+
return FALSE;
}
process->state->change = s->parent.timestamp;
}
- if(state_out == 32 || state_out == 128)
- exit_process(s, process); /* EXIT_DEAD || TASK_DEAD */
- /* see sched.h for states */
+ if(state_out == 32 || state_out == 64) { /* EXIT_DEAD || TASK_DEAD */
+ /* see sched.h for states */
+ if (!exit_process(s, process)) {
+ process->state->s = LTTV_STATE_DEAD;
+ process->state->change = s->parent.timestamp;
+ }
+ }
}
}
process = ts->running_process[cpu] =
*
* Simply put a correct parent.
*/
- g_assert(0); /* This is a problematic case : the process has been created
- before the fork event */
+ g_error("Process %u has been created before fork on cpu %u. Probably an unsynchronized TSC problem on the traced machine.", child_pid, cpu);
+ //g_assert(0); /* This is a problematic case : the process has been created
+ // before the fork event */
child_process->ppid = process->pid;
child_process->tgid = child_tgid;
}
process = lttv_state_find_process_or_create(ts, ANY_CPU, pid,
<t_time_zero);
- process->execution_stack =
- g_array_set_size(process->execution_stack, 1);
- es = process->state =
- &g_array_index(process->execution_stack, LttvExecutionState, 0);
- es->t = LTTV_STATE_SYSCALL;
+ if (process->state->s != LTTV_STATE_DEAD) {
+ process->execution_stack =
+ g_array_set_size(process->execution_stack, 1);
+ es = process->state =
+ &g_array_index(process->execution_stack, LttvExecutionState, 0);
+ es->t = LTTV_STATE_SYSCALL;
+ }
process->type = LTTV_STATE_KERNEL_THREAD;
return FALSE;
g_assert(release_pid != 0);
process = lttv_state_find_process(ts, ANY_CPU, release_pid);
-
+ if(likely(process != NULL))
+ exit_process(s, process);
+ return FALSE;
+//DISABLED
if(likely(process != NULL)) {
/* release_task is happening at kernel level : we can now safely release
* the data structure of the process */
LTTV_STATE_RESOURCE_CPUS = g_quark_from_string("cpu resource states");
LTTV_STATE_RESOURCE_CPUS = g_quark_from_string("cpu count");
LTTV_STATE_RESOURCE_IRQS = g_quark_from_string("irq resource states");
+ LTTV_STATE_RESOURCE_SOFT_IRQS = g_quark_from_string("soft irq resource states");
+ LTTV_STATE_RESOURCE_TRAPS = g_quark_from_string("trap resource states");
LTTV_STATE_RESOURCE_BLKDEVS = g_quark_from_string("blkdevs resource states");
LTTV_CPU_IDLE = g_quark_from_string("idle");
LTTV_CPU_BUSY = g_quark_from_string("busy");
LTTV_CPU_IRQ = g_quark_from_string("irq");
+ LTTV_CPU_SOFT_IRQ = g_quark_from_string("softirq");
LTTV_CPU_TRAP = g_quark_from_string("trap");
LTTV_IRQ_UNKNOWN = g_quark_from_string("unknown");
projects / lttv.git / blobdiff