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vl: fix tracing initialization 

we should call trace_init_backends() before trace_init_file() for
CONFIG_TRACE_SIMPLE There is no difference for other cases.

This problem was introduced by the commit
    commit 41fc57e44e
    Author: Paolo Bonzini <pbonzini@redhat.com>
    Date:   Thu Jan 7 16:55:24 2016 +0300

    trace: split trace_init_file out of trace_init_backends

'make check' was failed as a result if configured with
  --enable-trace-backends=simple

Spotted by Alex Bennée.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-id: 1455036545-14870-1-git-send-email-den@openvz.org
CC: Alex Bennée <alex.bennee@linaro.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Denis V. Lunev 2016-02-09 19:49:05 +03:00 committed by Stefan Hajnoczi
parent 4779dc1d19
commit 62cb4145bb
1 changed files with 3 additions and 4 deletions
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7
vl.c
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@ -4081,6 +4081,9 @@ int main(int argc, char **argv, char **envp)
exit(0);
}
if (!trace_init_backends()) {
exit(1);
}
trace_init_file(trace_file);
/* Open the logfile at this point and set the log mask if necessary.
@ -4101,10 +4104,6 @@ int main(int argc, char **argv, char **envp)
qemu_set_log(0);
}
if (!trace_init_backends()) {
exit(1);
}
/* If no data_dir is specified then try to find it relative to the
executable path. */
if (data_dir_idx < ARRAY_SIZE(data_dir)) {