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vl: add runstate_set tracepoint

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This patch enables us to know RunState transition. It will be userful
for investigation when the trouble occured in special event such like
live migration, shutdown, suspend, and so on.

Signed-off-by: Kazuya Saito <saito.kazuya@jp.fujitsu.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Kazuya Saito 2013-03-22 17:26:59 +09:00 committed by Stefan Hajnoczi
parent a46b24fd5d
commit 7e8660032c
2 changed files with 2 additions and 1 deletions
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1
trace-events
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@ -474,6 +474,7 @@ scsi_request_sense(int target, int lun, int tag) "target %d lun %d tag %d"
# vl.c
vm_state_notify(int running, int reason) "running %d reason %d"
load_file(const char *name, const char *path) "name %s location %s"
runstate_set(int new_state) "new state %d"
# block/qcow2.c
qcow2_writev_start_req(void *co, int64_t sector, int nb_sectors) "co %p sector %" PRIx64 " nb_sectors %d"

2
vl.c
View file

@ -642,7 +642,7 @@ void runstate_set(RunState new_state)
RunState_lookup[new_state]);
abort();
}
trace_runstate_set(new_state);
current_run_state = new_state;
}