From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by dpdk.org (Postfix) with ESMTP id B00324C91 for ; Mon, 8 Oct 2018 11:12:01 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 08 Oct 2018 02:12:00 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,356,1534834800"; d="scan'208";a="79366158" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.49]) ([10.237.221.49]) by orsmga007.jf.intel.com with ESMTP; 08 Oct 2018 02:11:54 -0700 To: Shreyansh Jain Cc: Reshma Pattan , Hemant Agrawal , Ashish Gupta , Fiona Trahe , Pablo de Lara , Akhil Goyal , Declan Doherty , Fan Zhang , Rahul Lakkireddy , Gaetan Rivet , Qi Zhang , Xiao Wang , Beilei Xing , Wenzhuo Lu , Konstantin Ananyev , Rasesh Mody , Harish Patil , Shahed Shaikh , Andrew Rybchenko , Jasvinder Singh , Cristian Dumitrescu , Keith Wiles , Nipun Gupta , Anatoly Burakov , Thomas Monjalon , Jerin Jacob , Olivier Matz , Ashish Gupta , dev@dpdk.org References: <20181004034047.26824-1-ferruh.yigit@intel.com> <20181005162612.31906-1-ferruh.yigit@intel.com> <20181005162612.31906-4-ferruh.yigit@intel.com> <13444cc5-2a1e-881b-40a0-4ab972324e5e@nxp.com> From: Ferruh Yigit Openpgp: preference=signencrypt Autocrypt: addr=ferruh.yigit@intel.com; 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WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <13444cc5-2a1e-881b-40a0-4ab972324e5e@nxp.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-dev] [PATCH v2 4/4] lib: reduce global variable usage X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Oct 2018 09:12:02 -0000 On 10/8/2018 9:45 AM, Shreyansh Jain wrote: > On Friday 05 October 2018 09:56 PM, Ferruh Yigit wrote: >> Some global variables can be eliminated, since they are not part of >> public interface, it is free to remove them. >> >> Signed-off-by: Ferruh Yigit >> --- >> lib/librte_compressdev/rte_compressdev.c | 32 ++++++++---------- >> lib/librte_compressdev/rte_compressdev_pmd.h | 5 --- >> lib/librte_cryptodev/rte_cryptodev.c | 34 +++++++++----------- >> lib/librte_cryptodev/rte_cryptodev_pmd.h | 3 -- >> lib/librte_eventdev/rte_eventdev.c | 8 ++--- >> lib/librte_eventdev/rte_eventdev_pmd.h | 2 -- >> lib/librte_rawdev/rte_rawdev.c | 10 +++--- >> lib/librte_rawdev/rte_rawdev_pmd.h | 2 -- >> 8 files changed, 37 insertions(+), 59 deletions(-) > > [...] > >> diff --git a/lib/librte_rawdev/rte_rawdev.c b/lib/librte_rawdev/rte_rawdev.c >> index 62b6b97ef..9f1e3592d 100644 >> --- a/lib/librte_rawdev/rte_rawdev.c >> +++ b/lib/librte_rawdev/rte_rawdev.c >> @@ -35,21 +35,19 @@ >> /* dynamic log identifier */ >> int librawdev_logtype; >> >> -struct rte_rawdev rte_rawdevices[RTE_RAWDEV_MAX_DEVS]; >> +static struct rte_rawdev rte_rawdevices[RTE_RAWDEV_MAX_DEVS]; >> >> -struct rte_rawdev *rte_rawdevs = &rte_rawdevices[0]; >> +struct rte_rawdev *rte_rawdevs = rte_rawdevices; >> >> static struct rte_rawdev_global rawdev_globals = { >> .nb_devs = 0 >> }; >> >> -struct rte_rawdev_global *rte_rawdev_globals = &rawdev_globals; >> - >> /* Raw device, northbound API implementation */ >> uint8_t >> rte_rawdev_count(void) >> { >> - return rte_rawdev_globals->nb_devs; >> + return rawdev_globals.nb_devs; >> } >> >> uint16_t >> @@ -60,7 +58,7 @@ rte_rawdev_get_dev_id(const char *name) >> if (!name) >> return -EINVAL; >> >> - for (i = 0; i < rte_rawdev_globals->nb_devs; i++) >> + for (i = 0; i < rawdev_globals.nb_devs; i++) >> if ((strcmp(rte_rawdevices[i].name, name) >> == 0) && >> (rte_rawdevices[i].attached == >> diff --git a/lib/librte_rawdev/rte_rawdev_pmd.h b/lib/librte_rawdev/rte_rawdev_pmd.h >> index bb9bbc350..811e51d07 100644 >> --- a/lib/librte_rawdev/rte_rawdev_pmd.h >> +++ b/lib/librte_rawdev/rte_rawdev_pmd.h >> @@ -73,8 +73,6 @@ struct rte_rawdev_global { >> uint16_t nb_devs; >> }; >> >> -extern struct rte_rawdev_global *rte_rawdev_globals; >> -/** Pointer to global raw devices data structure. */ >> extern struct rte_rawdev *rte_rawdevs; >> /** The pool of rte_rawdev structures. */ > > I think `rte_rawdevs` can also be removed from an exposed symbol. In all > cases (at least for now), this is being accessed using an API (and no > macros). There should be no need for people to read this directly if > sufficient get_by_* APIs are available. +1 to make it library internal. But `rte_rawdevs` is both in public header and .map file, so it is part of public API, we can't remove it without deprecation process. And I want to leave the decision of removing an public symbol to library maintainers. > > Wouldn't same be valid for rte_compressdevs as well? `rte_compressdevs` is already removed, but if you mean `rte_cryptodevs` it has same problem with `rte_rawdevs`, it is part of API. > Besides the above: > > Acked-by: Shreyansh Jain >