[dpdk-dev] [PATCH v4] eal: fix proc type auto detection

Thomas Monjalon thomas at monjalon.net
Tue Jul 30 10:13:53 CEST 2019


24/07/2019 18:07, Anatoly Burakov:
> Currently, primary process holds an exclusive lock on the config
> file, thereby preventing other primaries from spinning up. However,
> when the primary dies, the lock is no longer being held, even though
> there might be other secondary processes still running.
> 
> The fix is two-fold. First of all, downgrade the primary process's
> exclusive lock to a shared lock once we have it. Second of all,
> also take out shared locks on the config from the secondaries. We
> are using fcntl() locks, which get dropped when the file handle is
> closed, so also remove the closure of config file handle.
> 
> Fixes: af75078fece3 ("first public release")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Anatoly Burakov <anatoly.burakov at intel.com>

This is not a new bug, and the fix is a bit complex,
so it is deferred to 19.11 cycle. OK?





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