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tracing: only allow -trace to override -D if set 

Otherwise any -D settings the user may have made get ignored.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Robert Foley <robert.foley@linaro.org>
Message-Id: <20200225124710.14152-10-alex.bennee@linaro.org>
This commit is contained in:
Alex Bennée 2020-02-25 12:47:00 +00:00
parent 002375895c
commit 3d88754e2b
1 changed files with 8 additions and 3 deletions
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11
trace/control.c
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@ -226,10 +226,15 @@ void trace_init_file(const char *file)
#ifdef CONFIG_TRACE_SIMPLE
st_set_trace_file(file);
#elif defined CONFIG_TRACE_LOG
/* If both the simple and the log backends are enabled, "--trace file"
* only applies to the simple backend; use "-D" for the log backend.
/*
* If both the simple and the log backends are enabled, "--trace file"
* only applies to the simple backend; use "-D" for the log
* backend. However we should only override -D if we actually have
* something to override it with.
*/
qemu_set_log_filename(file, &error_fatal);
if (file) {
qemu_set_log_filename(file, &error_fatal);
}
#else
if (file) {
fprintf(stderr, "error: --trace file=...: "