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Re: [PATCH] trace/simple: Enable tracing on startup only if the user spe


From: Markus Armbruster
Subject: Re: [PATCH] trace/simple: Enable tracing on startup only if the user specifies a trace option
Date: Tue, 29 Sep 2020 09:46:21 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux)

Stefan Hajnoczi <stefanha@gmail.com> writes:

> On Sun, Aug 16, 2020 at 12:46:10PM -0500, duboisj@gmail.com wrote:
>> From: Josh DuBois <josh@joshdubois.com>
>> 
>> Tracing can be enabled at the command line or via the
>> monitor. Command-line trace options are recorded during
>> trace_opt_parse(), but tracing is not enabled until the various
>> front-ends later call trace_init_file(). If the user passes a trace
>> option on the command-line, remember that and enable tracing during
>> trace_init_file().  Otherwise, trace_init_file() should record the
>> trace file specified by the frontend and avoid enabling traces
>> until the user requests them via the monitor.
>> 
>> This fixes 1b7157be3a8c4300fc8044d40f4b2e64a152a1b4 and also
>> db25d56c014aa1a96319c663e0a60346a223b31e, by allowing the user
>> to enable traces on the command line and also avoiding
>> unwanted trace-<pid> files when the user has not asked for them.
>> 
>> Fixes: 1b7157be3a8c4300fc8044d40f4b2e64a152a1b4
>> Signed-off-by: Josh DuBois <josh@joshdubois.com>
>> ---
>>  trace/control.c | 6 +++++-
>>  1 file changed, 5 insertions(+), 1 deletion(-)
>
> Thanks, applied to my tracing-next tree:
> https://github.com/stefanha/qemu/commits/tracing-next
>
> Stefan

Pull request?




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