Question perf annotate: how to free allocated memory of arch->instructions

[Thomas-Mich Richter <tmricht@linux.vnet.ibm.com>]

I have a question regarding the struct arch and its initialization/un_initialization.

Function symbol__disassemble() invokes arch->init() once it has identified the archticture
its running on. 
When I execute command ./perf annotate --stdio I discovered that functions
arch__associate_ins_ops()
--> arch__grow_instructions()

are called to create/enlarge the array of machine instructions which require special
annotations like branches, jumps, etc to display arrows etc in the GUI. (At least on s390).

On ARM/ARM64 the arch->priv field also points to malloc'ed space needed for ARM specific
processing.

However there is no uninit() like function to remove any allocated memory and to clean up
before perf terminates.

Is this done on intention to rely on the exit of perf to release any allocated memory?
Are there plans to change this, that is invent an uninit() like function for proper memory free?
Where would be the best place to call this uninit() like function?

Thanks
-- 
Thomas Richter, Dept 3303, IBM LTC Boeblingen Germany
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