Re: [dpdk-dev] tools brainstorming

["Simon Kågström" <simon.kagstrom@netinsight.net>]

On 2015-03-23 17:29, Thomas Monjalon wrote:
> 2015-03-20 16:18, Simon Kågström:
>>> 	- make autotests easier and faster to run for smoke testing
>>> 	- automated basic testpmd check
>>
>> Code coverage for automated tests can be useful as well.
>>
>> In a way I'm speaking in my own interests here since I've written a tool
>> to do just this (and produce nice HTML etc output), kcov, that can be
>> found at github (https://github.com/SimonKagstrom/kcov).
> 
> Feel free to do some DPDK integration for your kcov tool.
> It could definitely help to write good tests.

Well, there's not that much integration needed for kcov. It needs
debugging information in the binary, so something like the patch below
is needed (and the same for clang, not sure about icc). Apart from that,
I just ran it as

  kcov --exclude-path=/usr /tmp/kcov-dpdk ./basicfwd --no-huge -c 1 -n 1

to collect coverage info and generate a report. The report for this
particular case can be seen here:

  http://www.c64-network.org/kcov-dpdk/index.html

I'm not sure how your automatic test suite works, but just running it
like you do today but through kcov like above should do the trick.

// Simon

diff --git a/mk/toolchain/gcc/rte.vars.mk b/mk/toolchain/gcc/rte.vars.mk
index 88f235c..d3cd9e5 100644
--- a/mk/toolchain/gcc/rte.vars.mk
+++ b/mk/toolchain/gcc/rte.vars.mk
@@ -60,7 +60,7 @@ endif
 HOSTAS    = as

 TOOLCHAIN_ASFLAGS =
-TOOLCHAIN_CFLAGS =
+TOOLCHAIN_CFLAGS = -g
 TOOLCHAIN_LDFLAGS =

 ifeq ($(CONFIG_RTE_LIBRTE_GCOV),y)