]> git.baikalelectronics.ru Git - kernel.git/commit
thermal: trace: migrating thermal traces to use TRACE_DEFINE_ENUM() macros
authorMichele Di Giorgio <michele.digiorgio@arm.com>
Tue, 1 Mar 2016 17:38:54 +0000 (17:38 +0000)
committerZhang Rui <rui.zhang@intel.com>
Mon, 14 Mar 2016 23:51:40 +0000 (07:51 +0800)
commit03082ad442a0ec05bcc7af2c53f4466821b4f257
tree2da9c9c652331b8e7808f2311b57fbf5d1714b14
parentf8a99dc23ee72194787fe9490e8f23b768742711
thermal: trace: migrating thermal traces to use TRACE_DEFINE_ENUM() macros

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.

CC: Steven Rostedt <rostedt@goodmis.org>
CC: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Javi Merino <javi.merino@arm.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
include/trace/events/thermal.h