From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by dpdk.org (Postfix) with ESMTP id 70FC65A6E for ; Fri, 1 Jun 2018 19:15:23 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 01 Jun 2018 10:15:21 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,467,1520924400"; d="scan'208";a="61015422" Received: from irvmail001.ir.intel.com ([163.33.26.43]) by orsmga001.jf.intel.com with ESMTP; 01 Jun 2018 10:15:19 -0700 Received: from sivswdev01.ir.intel.com (sivswdev01.ir.intel.com [10.237.217.45]) by irvmail001.ir.intel.com (8.14.3/8.13.6/MailSET/Hub) with ESMTP id w51HFIQw020487; Fri, 1 Jun 2018 18:15:18 +0100 Received: from sivswdev01.ir.intel.com (localhost [127.0.0.1]) by sivswdev01.ir.intel.com with ESMTP id w51HFI39024793; Fri, 1 Jun 2018 18:15:18 +0100 Received: (from aburakov@localhost) by sivswdev01.ir.intel.com with LOCAL id w51HFILZ024789; Fri, 1 Jun 2018 18:15:18 +0100 From: Anatoly Burakov To: dev@dpdk.org Cc: ray.kinsella@intel.com, kuralamudhan.ramakrishnan@intel.com, louise.m.daly@intel.com, bruce.richardson@intel.com, ferruh.yigit@intel.com, konstantin.ananyev@intel.com, thomas@monjalon.net Date: Fri, 1 Jun 2018 18:15:13 +0100 Message-Id: <438a4831f1c5bf40f946950ed856dd0d0c841904.1527872626.git.anatoly.burakov@intel.com> X-Mailer: git-send-email 1.7.0.7 In-Reply-To: References: In-Reply-To: References: Subject: [dpdk-dev] [PATCH 4/9] eal: add support for no-shconf in hugepage data file 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: Fri, 01 Jun 2018 17:15:24 -0000 Do not create a shared hugepage data file if we were asked to not create any shared files. Signed-off-by: Anatoly Burakov --- Notes: RFC->v1: - Use --no-shconf only lib/librte_eal/linuxapp/eal/eal_memory.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c index c917de1c2..cb784e1c3 100644 --- a/lib/librte_eal/linuxapp/eal/eal_memory.c +++ b/lib/librte_eal/linuxapp/eal/eal_memory.c @@ -521,7 +521,18 @@ static void * create_shared_memory(const char *filename, const size_t mem_size) { void *retval; - int fd = open(filename, O_CREAT | O_RDWR, 0666); + int fd; + + /* if no shared files mode is used, create anonymous memory instead */ + if (internal_config.no_shconf) { + retval = mmap(NULL, mem_size, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + if (retval == MAP_FAILED) + return NULL; + return retval; + } + + fd = open(filename, O_CREAT | O_RDWR, 0666); if (fd < 0) return NULL; if (ftruncate(fd, mem_size) < 0) { -- 2.17.0