Messages in this thread | | | Date | Tue, 1 Mar 2016 13:20:06 -0500 | From | Steven Rostedt <> | Subject | Re: [PATCH] thermal: trace: migrating thermal traces to use TRACE_DEFINE_ENUM() macros |
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On Tue, 1 Mar 2016 17:38:54 +0000 Michele Di Giorgio <michele.digiorgio@arm.com> wrote:
> Userspace tools are not aware of how to convert the enums provided by > the tracepoints to their corresponding strings. > > Adding TRACE_DEFINE_ENUM() macros allows to make the enums available > to userspace to let the tools know what those enum values represent. > > In particular, for thermal zone trip types what we obtained before was > something like: > > kworker/1:1-460 [001] 320.372732: thermal_zone_trip: thermal_zone=soc > id=0 trip=1 trip_type=1 > > Unfortunately, userspace tools do not know how to convert enum values to > strings and as a consequence they can only forward the enum value to the > output. By using TRACE_DEFINE_ENUM() macros for thermal traces we get the > following trace line: > > kworker/1:1-460 [001] 320.372732: thermal_zone_trip: thermal_zone=soc > id=0 trip=1 trip_type=PASSIVE > > Userspace tools are now able to better understand the meaning of the trip_type > and provide the user with more readable information. >
Acked-by: Steven Rostedt <rostedt@goodmis.org>
-- Steve
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