From 1e304fa170b16e757ec3518af49d9d5aaf099deb Mon Sep 17 00:00:00 2001 From: compudj Date: Thu, 24 Aug 2006 01:36:05 +0000 Subject: [PATCH] update stats for pid 0 at beginning of trace git-svn-id: http://ltt.polymtl.ca/svn@2046 04897980-b3bd-0310-b5e0-8ef037075253 --- ltt/branches/poly/lttv/lttv/state.c | 31 ++++++++++++++++++++++++++--- 1 file changed, 28 insertions(+), 3 deletions(-) diff --git a/ltt/branches/poly/lttv/lttv/state.c b/ltt/branches/poly/lttv/lttv/state.c index 846c1ebd..7770e9ab 100644 --- a/ltt/branches/poly/lttv/lttv/state.c +++ b/ltt/branches/poly/lttv/lttv/state.c @@ -231,8 +231,18 @@ restore_init_state(LttvTraceState *self) /* Put the per cpu running_process to beginning state : process 0. */ for(i=0; i< nb_cpus; i++) { + LttvExecutionState *es; self->running_process[i] = lttv_state_create_process(self, NULL, i, 0, 0, LTTV_STATE_UNNAMED, &start_time); + /* We are not sure is it's a kernel thread or normal thread, put the + * bottom stack state to unknown */ + self->running_process[i]->execution_stack = + g_array_set_size(self->running_process[i]->execution_stack, 1); + es = self->running_process[i]->state = + &g_array_index(self->running_process[i]->execution_stack, + LttvExecutionState, 0); + es->t = LTTV_STATE_MODE_UNKNOWN; + self->running_process[i]->state->s = LTTV_STATE_RUN; self->running_process[i]->cpu = i; } @@ -1714,6 +1724,9 @@ static void lttv_state_free_process_table(GHashTable *processes) static gboolean syscall_entry(void *hook_data, void *call_data) { LttvTracefileState *s = (LttvTracefileState *)call_data; + guint cpu = s->cpu; + LttvTraceState *ts = (LttvTraceState*)s->parent.t_context; + LttvProcessState *process = ts->running_process[cpu]; LttEvent *e = ltt_tracefile_get_event(s->parent.tf); LttvTraceHookByFacility *thf = (LttvTraceHookByFacility *)hook_data; LttField *f = thf->f1; @@ -1733,7 +1746,9 @@ static gboolean syscall_entry(void *hook_data, void *call_data) submode = g_quark_from_string(string->str); g_string_free(string, TRUE); } - push_state(s, LTTV_STATE_SYSCALL, submode); + /* There can be no system call from PID 0 : unknown state */ + if(process->pid != 0) + push_state(s, LTTV_STATE_SYSCALL, submode); return FALSE; } @@ -1741,8 +1756,13 @@ static gboolean syscall_entry(void *hook_data, void *call_data) static gboolean syscall_exit(void *hook_data, void *call_data) { LttvTracefileState *s = (LttvTracefileState *)call_data; + guint cpu = s->cpu; + LttvTraceState *ts = (LttvTraceState*)s->parent.t_context; + LttvProcessState *process = ts->running_process[cpu]; - pop_state(s, LTTV_STATE_SYSCALL); + /* There can be no system call from PID 0 : unknown state */ + if(process->pid != 0) + pop_state(s, LTTV_STATE_SYSCALL); return FALSE; } @@ -1960,7 +1980,12 @@ static gboolean schedchange(void *hook_data, void *call_data) //if(unlikely(process->pid != pid_out)) { // g_assert(process->pid == 0); //} - + if(process->pid == 0 && process->state->t == LTTV_STATE_MODE_UNKNOWN) { + /* Scheduling out of pid 0 at beginning of the trace : + * we know for sure it is in syscall mode at this point. */ + g_assert(process->execution_stack->len == 1); + process->state->t = LTTV_STATE_SYSCALL; + } if(unlikely(process->state->s == LTTV_STATE_EXIT)) { process->state->s = LTTV_STATE_ZOMBIE; process->state->change = s->parent.timestamp; -- 2.34.1