tree 8b519a9409851c2ac843351ff10fc208ef1649ad
parent 2c7c90f61acc23b08b67391fea8ffcc5ea336cad
author Luis R. Rodriguez <mcgrof@kernel.org> 1455831149 -0800
committer Luis R. Rodriguez <mcgrof@kernel.org> 1468957751 -0700

dynamic_debug: port to use linker tables

This removes the custom vmlinux.lds.h hacks and uses
the generalized solution for .data (SECTION_DATA)
entries.

This is much more potential for further fine tuning here
though in the future. For instance, linker tables enable
an extra postfix for order level annotations, this could
easily be used as the KBUILD_MODNAME and with a bit of
linker table changes we may be able to get a direct O(1)
count of the entries for that KBUILD_MODNAME: it would
just be a count on the number of entries for the given
order level. This should help make dynamic_debug_init()
cleaner and also reduce the amount of time it takes at
boot time. Instead of iterating over each print until we
have all for a KBUILD_MODNAME, we'd instead directly
operate on each KBUILD_MODNAME directly.

Tested dynamic debug with dyndbg query ana debugfs control
and it works as expected.

Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>