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trace: improve runstate tracing 

Trace previous state, move tracepoint to runstate_set start (to cover
all cases for debugging), add string representations of traced states.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-id: 20190124125154.474650-1-vsementsov@virtuozzo.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2019-01-24 15:51:54 +03:00 committed by Stefan Hajnoczi
parent 62dd1048c0
commit ff12e3ae3d
2 changed files with 7 additions and 4 deletions
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4
trace-events
View File

@ -34,9 +34,9 @@ cpu_out(unsigned int addr, char size, unsigned int val) "addr 0x%x(%c) value %u"
balloon_event(void *opaque, unsigned long addr) "opaque %p addr %lu"
# vl.c
vm_state_notify(int running, int reason) "running %d reason %d"
vm_state_notify(int running, int reason, const char *reason_str) "running %d reason %d (%s)"
load_file(const char *name, const char *path) "name %s location %s"
runstate_set(int new_state) "new state %d"
runstate_set(int current_state, const char *current_state_str, int new_state, const char *new_state_str) "current_run_state %d (%s) new_state %d (%s)"
system_wakeup_request(int reason) "reason=%d"
qemu_system_shutdown_request(int reason) "reason=%d"
qemu_system_powerdown_request(void) ""

7
vl.c
View File

@ -731,6 +731,9 @@ void runstate_set(RunState new_state)
{
assert(new_state < RUN_STATE__MAX);
trace_runstate_set(current_run_state, RunState_str(current_run_state),
new_state, RunState_str(current_run_state));
if (current_run_state == new_state) {
return;
}
@ -741,7 +744,7 @@ void runstate_set(RunState new_state)
RunState_str(new_state));
abort();
}
trace_runstate_set(new_state);
current_run_state = new_state;
}
@ -1554,7 +1557,7 @@ void vm_state_notify(int running, RunState state)
{
VMChangeStateEntry *e, *next;
trace_vm_state_notify(running, state);
trace_vm_state_notify(running, state, RunState_str(state));
QLIST_FOREACH_SAFE(e, &vm_change_state_head, entries, next) {
e->cb(e->opaque, running, state);