[Bug default/28954] add Linux Kernel symbol namespace support

[gprocida at google dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=28954

--- Comment #2 from gprocida at google dot com ---
Hi,

(In reply to Ben Woodard from comment #1)
> I’m a little confused by this the LKM name spacing doesn’t seem to use any
> of the symbol mangling that C++ does. From the links that you posted it
> seems like the way that the kernel mangles these names is simply by putting
> “.<subsystem>” into the ELF linkage name. This confuses me because, I would
> think that this change in linkage name would show up in ABI reports but your
> bug description below suggests that it doesn’t. I must be missing something.

I was confused too. It looks like that part of the scheme never happened,
probably because it was both redundant and too intrusive.

Instead we need to chase __kstrtabns_FOO to a string table entry.

Giuliano.

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