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From: Thomas Monjalon <thomas@monjalon.net>
To: "Guo, Jia" <jia.guo@intel.com>
Cc: Mordechay Haimovsky <motih@mellanox.com>, dev@dpdk.org,
 "stephen@networkplumber.org" <stephen@networkplumber.org>, "Richardson,
 Bruce" <bruce.richardson@intel.com>, "Yigit, Ferruh" <ferruh.yigit@intel.com>,
 "gaetan.rivet@6wind.com" <gaetan.rivet@6wind.com>, "Ananyev,
 Konstantin" <konstantin.ananyev@intel.com>,
 "shreyansh.jain@nxp.com" <shreyansh.jain@nxp.com>, "Wu,
 Jingjing" <jingjing.wu@intel.com>, "Zhang, Helin" <helin.zhang@intel.com>,
 "Van Haaren, Harry" <harry.van.haaren@intel.com>
Date: Tue, 09 Jan 2018 14:44:32 +0100
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Subject: Re: [dpdk-dev] [PATCH v7 1/2] eal: add uevent monitor for hot plug
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09/01/2018 13:08, Guo, Jia:
> Your comments about split it totally make sense ,no doubt that, but my question is that if split api with the funcational , so the function part should be set null implement or stake. Any other good idea or tip for that. 

Yes when introducing the callback API first, there will be no
implementation, so the callbacks are not called.
If needed you can have some empty functions.