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From: David Marchand <david.marchand@redhat.com>
To: Harry van Haaren <harry.van.haaren@intel.com>
Cc: dev <dev@dpdk.org>, Aaron Conole <aconole@redhat.com>,
	dpdk stable <stable@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH] test/service: fix wait for service core
Date: Wed, 27 Nov 2019 22:38:57 +0100
Message-ID: <CAJFAV8zofFEprMQMGiAf_3o=Tjf-zm0dx2QrafZq+c93Yu4_3g@mail.gmail.com> (raw)
In-Reply-To: <20191127132027.80239-1-harry.van.haaren@intel.com>

On Wed, Nov 27, 2019 at 2:20 PM Harry van Haaren
<harry.van.haaren@intel.com> wrote:
>
> This commit fixes a sporadic failure of the service_autotest
> unit test, as seen in the DPDK CI. The failure occurs as the main test
> thread did not wait on the service-thread to return, and allowing it
> to read a flag before the service was able to write to it.
>
> The fix changes the wait API call to specific the service-core ID,
> and this waits for cores with both ROLE_RTE and ROLE_SERVICE.
>
> The rte_eal_mp_wait_lcore() call does not (and should not) wait
> for service cores, so must not be used to wait on service-cores.
>
> Fixes: f038a81e1c56 ("service: add unit tests")
Cc: stable@dpdk.org

>
> Reported-by: Aaron Conole <aconole@redhat.com>
> Signed-off-by: Harry van Haaren <harry.van.haaren@intel.com>

Acked-by: David Marchand <david.marchand@redhat.com>

Before this patch, reproduced the pb in less than 2 minutes with:
# time (log=/tmp/$$.log; while true; do echo service_autotest |taskset
-c 0-1 build-gcc-static/app/test/dpdk-test --log-level *:8 -l 0-1
>$log 2>&1; grep -q 'Test OK' $log || break; done; cat $log; rm -f
$log)

With the patch, this loop has been running for 40 minutes.

Applied, thanks.


--
David Marchand


      parent reply index

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-27 13:20 Harry van Haaren
2019-11-27 14:10 ` Aaron Conole
2019-11-27 14:16   ` Van Haaren, Harry
2019-11-27 18:11     ` [dpdk-dev] [dpdk-stable] " David Marchand
2019-11-27 19:10       ` Aaron Conole
2019-11-27 20:11     ` David Marchand
2019-11-27 21:38 ` David Marchand [this message]

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