X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=ltt%2Fbranches%2Fpoly%2Flttv%2Flttv%2Fstate.c;h=5bdfcebf40f3faa1f748d2bf9b62c1d6856b8c56;hb=0305fe774206ec12a98378be3cf891446b1b901c;hp=0398bb9c074189c8e43c4d3fa029df045bc037d4;hpb=bfe9b1311035e09d2c8833a1c96cd0840ad8d516;p=lttv.git

diff --git a/ltt/branches/poly/lttv/lttv/state.c b/ltt/branches/poly/lttv/lttv/state.c
index 0398bb9c..5bdfcebf 100644
--- a/ltt/branches/poly/lttv/lttv/state.c
+++ b/ltt/branches/poly/lttv/lttv/state.c
@@ -168,7 +168,9 @@ static GQuark
   LTTV_STATE_NAME_TABLES,
   LTTV_STATE_TRACE_STATE_USE_COUNT,
   LTTV_STATE_RESOURCE_CPUS,
+  LTTV_STATE_RESOURCE_CPUS_COUNT,
   LTTV_STATE_RESOURCE_IRQS,
+  LTTV_STATE_RESOURCE_SOFT_IRQS,
   LTTV_STATE_RESOURCE_BLKDEVS;
 
 static void create_max_time(LttvTraceState *tcs);
@@ -252,12 +254,15 @@ static void lttv_state_free_usertraces(GHashTable *usertraces)
   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;
 
   //LttvTracefileState *tfcs;
 
@@ -283,6 +288,7 @@ restore_init_state(LttvTraceState *self)
 
   nb_cpus = ltt_trace_get_num_cpu(self->parent.t);
   nb_irqs = self->nb_irqs;
+  nb_soft_irqs = self->nb_soft_irqs;
   
   /* Put the per cpu running_process to beginning state : process 0. */
   for(i=0; i< nb_cpus; i++) {
@@ -313,9 +319,15 @@ restore_init_state(LttvTraceState *self)
       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 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;
@@ -481,6 +493,10 @@ init(LttvTracesetState *self, LttvTraceset *ts)
       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 bdev resource stuff */
     tcs->bdev_states = g_hash_table_new(g_int_hash, g_int_equal);
 
@@ -1154,7 +1170,7 @@ static void lttv_state_free_cpu_states(LttvCPUState *states, guint n)
   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);
@@ -1183,12 +1199,31 @@ static void lttv_state_free_irq_states(LttvIRQState *states, guint n)
   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,j;
+  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(LttvIRQState *states, guint n)
+{
+  g_free(states);
+}
+
 /* bdevstate stuff */
 
 static LttvBdevState *get_hashed_bdevstate(LttvTraceState *ts, guint16 devcode)
@@ -1220,7 +1255,7 @@ static LttvBdevState *bdevstate_new(void)
 
 static void bdevstate_free(LttvBdevState *bds)
 {
-  g_array_free(bds->mode_stack, FALSE);
+  g_array_free(bds->mode_stack, TRUE);
   g_free(bds);
 }
 
@@ -1351,6 +1386,10 @@ static void state_save(LttvTraceState *self, LttvAttribute *container)
 
   /* save the cpu state */
   {
+    value = lttv_attribute_add(container, LTTV_STATE_RESOURCE_CPUS_COUNT,
+        LTTV_UINT);
+    *(value.v_uint) = nb_cpus;
+
     value = lttv_attribute_add(container, LTTV_STATE_RESOURCE_CPUS,
         LTTV_POINTER);
     *(value.v_pointer) = lttv_state_copy_cpu_states(self->cpu_states, nb_cpus);
@@ -1364,6 +1403,14 @@ static void state_save(LttvTraceState *self, LttvAttribute *container)
     *(value.v_pointer) = lttv_state_copy_irq_states(self->irq_states, nb_irqs);
   }
 
+  /* save the soft irq state */
+  nb_irqs = self->nb_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_irqs);
+  }
+
   /* save the blkdev states */
   value = lttv_attribute_add(container, LTTV_STATE_RESOURCE_BLKDEVS,
         LTTV_POINTER);
@@ -1373,7 +1420,7 @@ static void state_save(LttvTraceState *self, LttvAttribute *container)
 
 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;
 
   LttvTracefileState *tfcs;
 
@@ -1432,6 +1479,13 @@ static void state_restore(LttvTraceState *self, LttvAttribute *container)
   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 the blkdev states */
   type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_BLKDEVS, &value);
   g_assert(type == LTTV_POINTER);
@@ -1508,7 +1562,6 @@ static void state_saved_free(LttvTraceState *self, LttvAttribute *container)
   lttv_attribute_remove_by_name(container, LTTV_STATE_PROCESSES);
 
   /* Free running processes array */
-  nb_cpus = ltt_trace_get_num_cpu(self->parent.t);
   type = lttv_attribute_get_by_name(container, LTTV_STATE_RUNNING_PROCESS, 
         &value);
   g_assert(type == LTTV_POINTER);
@@ -1516,20 +1569,23 @@ static void state_saved_free(LttvTraceState *self, LttvAttribute *container)
   g_free(running_process);
 
   /* free cpu resource states */
+  type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_CPUS_COUNT, &value);
+  g_assert(type == LTTV_UINT);
+  nb_cpus = *value.v_uint;
   type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_CPUS, &value);
   g_assert(type == LTTV_POINTER);
-  lttv_state_free_cpu_states(self->cpu_states, nb_cpus);
+  lttv_state_free_cpu_states(*(value.v_pointer), nb_cpus);
 
   /* free irq resource states */
   nb_irqs = self->nb_irqs;
   type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_IRQS, &value);
   g_assert(type == LTTV_POINTER);
-  lttv_state_free_irq_states(self->irq_states, nb_irqs);
+  lttv_state_free_irq_states(*(value.v_pointer), nb_irqs);
 
   /* free the blkdev states */
   type = lttv_attribute_get_by_name(container, LTTV_STATE_RESOURCE_BLKDEVS, &value);
   g_assert(type == LTTV_POINTER);
-  lttv_state_free_blkdev_hashtable(self->bdev_states);
+  lttv_state_free_blkdev_hashtable(*(value.v_pointer));
 
   nb_tracefile = self->parent.tracefiles->len;
 
@@ -1744,9 +1800,10 @@ create_name_tables(LttvTraceState *tcs)
   }
   */
 
-  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);
   }
@@ -1775,7 +1832,7 @@ get_name_tables(LttvTraceState *tcs)
   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;
 }
 
 
@@ -2132,7 +2189,7 @@ lttv_state_find_process_or_create(LttvTraceState *ts, guint cpu, guint pid,
  * 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) 
 {
@@ -2290,12 +2347,17 @@ static gboolean irq_entry(void *hook_data, void *call_data)
 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--;
 
+  return FALSE;
+}
 
 static gboolean irq_exit(void *hook_data, void *call_data)
 {
@@ -2316,6 +2378,7 @@ 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;
@@ -2323,7 +2386,7 @@ static gboolean soft_irq_entry(void *hook_data, void *call_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];
@@ -2337,6 +2400,11 @@ static gboolean soft_irq_entry(void *hook_data, void *call_data)
 
   /* Do something with the info about being in user or system mode when int? */
   push_state(s, LTTV_STATE_SOFT_IRQ, submode);
+
+  /* update softirq status */
+  s->cpu_state->last_soft_irq = softirq;
+  ts->soft_irq_states[softirq].running++;
+
   return FALSE;
 }
 
@@ -2539,7 +2607,7 @@ static gboolean schedchange(void *hook_data, void *call_data)
         process->state->change = s->parent.timestamp;
       }
       
-      if(state_out == 32 || state_out == 128)
+      if(state_out == 32 || state_out == 64)
          exit_process(s, process); /* EXIT_DEAD || TASK_DEAD */
             /* see sched.h for states */
     }
@@ -2558,9 +2626,18 @@ static gboolean schedchange(void *hook_data, void *call_data)
 
   /* update cpu status */
   if(pid_in == 0)
+    /* going to idle task */
     cpu_set_base_mode(s->cpu_state, LTTV_CPU_IDLE);
-  else
+  else {
+    /* scheduling a real task.
+     * we must be careful here:
+     * if we just schedule()'ed to a process that is
+     * in a trap, we must put the cpu in trap mode
+     */
     cpu_set_base_mode(s->cpu_state, LTTV_CPU_BUSY);
+    if(process->state->t == LTTV_STATE_TRAP)
+      cpu_push_mode(s->cpu_state, LTTV_CPU_TRAP);
+  }
 
   return FALSE;
 }
@@ -3842,7 +3919,9 @@ static void module_init()
   LTTV_STATE_TRACE_STATE_USE_COUNT = 
       g_quark_from_string("trace_state_use_count");
   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_BLKDEVS = g_quark_from_string("blkdevs resource states");