From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Liang, Cunming" <cunming.liang@intel.com>
Subject: Re: [PATCH v14 06/13] eal/linux: standalone intr event
 fd create support
Date: Mon, 20 Jul 2015 10:08:18 +0800
Message-ID: <55AC5812.6000004@intel.com>
References: <1434686442-578-1-git-send-email-cunming.liang@intel.com>
 <1437113775-32199-7-git-send-email-cunming.liang@intel.com>
 <1831628.YzNoj6xjSe@xps13> <1790585.Z8rAdeIt1H@xps13>
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit
Cc: dev@dpdk.org, shemming@brocade.com
To: Thomas Monjalon <thomas.monjalon@6wind.com>
Return-path: <dev-bounces@dpdk.org>
Received: from mga03.intel.com (mga03.intel.com [134.134.136.65])
 by dpdk.org (Postfix) with ESMTP id 3916CC358
 for <dev@dpdk.org>; Mon, 20 Jul 2015 04:08:21 +0200 (CEST)
In-Reply-To: <1790585.Z8rAdeIt1H@xps13>
List-Id: patches and discussions about DPDK <dev.dpdk.org>
List-Unsubscribe: <http://dpdk.org/ml/options/dev>,
 <mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://dpdk.org/ml/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <http://dpdk.org/ml/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
Errors-To: dev-bounces@dpdk.org
Sender: "dev" <dev-bounces@dpdk.org>



On 7/20/2015 7:39 AM, Thomas Monjalon wrote:
> 2015-07-20 01:35, Thomas Monjalon:
>> 2015-07-17 14:16, Cunming Liang:
>>> +#ifdef RTE_NEXT_ABI
>>> +extern int
>>> +rte_intr_efd_enable(struct rte_intr_handle *intr_handle, uint32_t nb_efd);
>>> +#else
>>> +static inline int
>>> +rte_intr_efd_enable(struct rte_intr_handle *intr_handle, uint32_t nb_efd)
>>> +{
>>> +	RTE_SET_USED(intr_handle);
>>> +	RTE_SET_USED(nb_efd);
>>> +	return 0;
>>> +}
>>> +#endif
>> [...]
>>> +#ifdef RTE_NEXT_ABI
>>> +extern void
>>> +rte_intr_efd_disable(struct rte_intr_handle *intr_handle);
>>> +#else
>>> +static inline void
>>> +rte_intr_efd_disable(struct rte_intr_handle *intr_handle)
>>> +{
>>> +	RTE_SET_USED(intr_handle);
>>> +}
>>> +#endif
>> [...]
>>> +#ifdef RTE_NEXT_ABI
>>> +static inline int
>>> +rte_intr_dp_is_en(struct rte_intr_handle *intr_handle)
>>> +{
>>> +	return !(!intr_handle->nb_efd);
>>> +}
>>> +#else
>>> +static inline int
>>> +rte_intr_dp_is_en(struct rte_intr_handle *intr_handle)
>>> +{
>>> +	RTE_SET_USED(intr_handle);
>>> +	return 0;
>>> +}
>>> +#endif
>> [...]
>>> +#ifdef RTE_NEXT_ABI
>>> +static inline int
>>> +rte_intr_allow_others(struct rte_intr_handle *intr_handle)
>>> +{
>>> +	return !!(intr_handle->max_intr - intr_handle->nb_efd);
>>> +}
>>> +#else
>>> +static inline int
>>> +rte_intr_allow_others(struct rte_intr_handle *intr_handle)
>>> +{
>>> +	RTE_SET_USED(intr_handle);
>>> +	return 1;
>>> +}
>>> +#endif
>> Why these #else cases?
> Why not totally removing these ifdef in the header and use them in .c?
That's a good idea, will take it. Thanks.
>
>>> --- a/lib/librte_eal/linuxapp/eal/rte_eal_version.map
>>> +++ b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
>>> @@ -117,6 +117,10 @@ DPDK_2.1 {
>>>   
>>>   	rte_epoll_ctl;
>>>   	rte_epoll_wait;
>>> +	rte_intr_allow_others;
>>> +	rte_intr_dp_is_en;
>>> +	rte_intr_efd_enable;
>>> +	rte_intr_efd_disable;
>> If RTE_NEXT_ABI is disabled, these symbols do not exist.
>> An alternate .map would be needed.
You're right, will take your suggestion above.