[dpdk-dev] DPDK (and rte_*alloc family) friendly Valgrind

[Luca Boccassi]

Hello all,

I created a set of patches for Valgrind that add support for the
rte_*alloc family of functions. We use it for memcheck (I added support
for other all the other Valgrind tools like cachegrind as well, but it's
less tested), and find it extremely useful, since the vanilla version
cannot intercept and report leaks cause by rte_*alloc functions from
librte_malloc.

While at FOSDEM last week I mentioned this to Mark Gray and Kevin
Traynor after their presentations (sorry it took a while to remember to
push this up :-) ), and they thought it would be useful for other
DPDK-based applications developers, so I've uploaded it to Github [1].
I've also sent the patches upstream a while ago [2].

It works with both with a statically and dynamically linked DPDK
library.

To use it with a statically linked DPDK, pass the following parameter to
Valgrind: --soname-synonyms=somalloc=NONE

To use it with a dynamically linked DPDK no additional parameter is
needed, but make sure that the SONAME matches either "lib*dpdk.so*" if
building a single .so or "librte_malloc.so*" if building each library
individually. If it doesn't match either of these regexp, then you can
manually patch the file include/pub_tool_redir.h and rebuild.

Please feel free to provide comments, feedback, or patches! All bug
reports will be promptly redirected to /dev/null :-)

-- 
Kind regards,
Luca Boccassi
Brocade Communications Systems

[1] https://github.com/bluca/valgrind-dpdk
[2] https://bugs.kde.org/show_bug.cgi?id=350405