From patchwork Tue Dec 19 11:14:36 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Burakov, Anatoly" X-Patchwork-Id: 32458 Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 125011B1A8; Tue, 19 Dec 2017 12:15:11 +0100 (CET) Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by dpdk.org (Postfix) with ESMTP id A51A41B019 for ; Tue, 19 Dec 2017 12:14:55 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 19 Dec 2017 03:14:54 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.45,426,1508828400"; d="scan'208";a="14827539" Received: from irvmail001.ir.intel.com ([163.33.26.43]) by fmsmga001.fm.intel.com with ESMTP; 19 Dec 2017 03:14:52 -0800 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 vBJBEqiD003110; Tue, 19 Dec 2017 11:14:52 GMT Received: from sivswdev01.ir.intel.com (localhost [127.0.0.1]) by sivswdev01.ir.intel.com with ESMTP id vBJBEqbR010237; Tue, 19 Dec 2017 11:14:52 GMT Received: (from aburakov@localhost) by sivswdev01.ir.intel.com with LOCAL id vBJBEqHC010233; Tue, 19 Dec 2017 11:14:52 GMT From: Anatoly Burakov To: dev@dpdk.org Cc: andras.kovacs@ericsson.com, laszlo.vadkeri@ericsson.com, keith.wiles@intel.com, benjamin.walker@intel.com, bruce.richardson@intel.com, thomas@monjalon.net Date: Tue, 19 Dec 2017 11:14:36 +0000 Message-Id: X-Mailer: git-send-email 1.7.0.7 In-Reply-To: References: In-Reply-To: References: Subject: [dpdk-dev] [RFC v2 09/23] eal: add "legacy memory" option 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: , Errors-To: dev-bounces@dpdk.org Sender: "dev" This adds a "--legacy-mem" command-line switch. It will be used to go back to the old memory behavior, one where we can't dynamically allocate/free memory (the downside), but one where the user can get physically contiguous memory, like before (the upside). For now, nothing but the legacy behavior exists, non-legacy memory init sequence will be added later. Signed-off-by: Anatoly Burakov --- lib/librte_eal/common/eal_common_options.c | 4 ++++ lib/librte_eal/common/eal_internal_cfg.h | 3 +++ lib/librte_eal/common/eal_options.h | 2 ++ lib/librte_eal/linuxapp/eal/eal.c | 1 + lib/librte_eal/linuxapp/eal/eal_memory.c | 22 ++++++++++++++++++---- 5 files changed, 28 insertions(+), 4 deletions(-) diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c index c3f7c41..88ff35a 100644 --- a/lib/librte_eal/common/eal_common_options.c +++ b/lib/librte_eal/common/eal_common_options.c @@ -99,6 +99,7 @@ eal_long_options[] = { {OPT_VFIO_INTR, 1, NULL, OPT_VFIO_INTR_NUM }, {OPT_VMWARE_TSC_MAP, 0, NULL, OPT_VMWARE_TSC_MAP_NUM }, {OPT_SINGLE_FILE_SEGMENTS, 0, NULL, OPT_SINGLE_FILE_SEGMENTS_NUM}, + {OPT_LEGACY_MEM, 0, NULL, OPT_LEGACY_MEM_NUM }, {0, 0, NULL, 0 } }; @@ -1162,6 +1163,9 @@ eal_parse_common_option(int opt, const char *optarg, case OPT_SINGLE_FILE_SEGMENTS_NUM: conf->single_file_segments = 1; break; + case OPT_LEGACY_MEM_NUM: + conf->legacy_mem = 1; + break; /* don't know what to do, leave this to caller */ default: diff --git a/lib/librte_eal/common/eal_internal_cfg.h b/lib/librte_eal/common/eal_internal_cfg.h index 484a32e..62ab15b 100644 --- a/lib/librte_eal/common/eal_internal_cfg.h +++ b/lib/librte_eal/common/eal_internal_cfg.h @@ -79,6 +79,9 @@ struct internal_config { volatile unsigned single_file_segments; /**< true if storing all pages within single files (per-page-size, * per-node). */ + volatile unsigned legacy_mem; + /**< true to enable legacy memory behavior (no dynamic allocation, + * contiguous segments). */ volatile int syslog_facility; /**< facility passed to openlog() */ /** default interrupt mode for VFIO */ volatile enum rte_intr_mode vfio_intr_mode; diff --git a/lib/librte_eal/common/eal_options.h b/lib/librte_eal/common/eal_options.h index 26a682a..d09b034 100644 --- a/lib/librte_eal/common/eal_options.h +++ b/lib/librte_eal/common/eal_options.h @@ -85,6 +85,8 @@ enum { OPT_VMWARE_TSC_MAP_NUM, #define OPT_SINGLE_FILE_SEGMENTS "single-file-segments" OPT_SINGLE_FILE_SEGMENTS_NUM, +#define OPT_LEGACY_MEM "legacy-mem" + OPT_LEGACY_MEM_NUM, OPT_LONG_MAX_NUM }; diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c index 2a3127f..37ae8e0 100644 --- a/lib/librte_eal/linuxapp/eal/eal.c +++ b/lib/librte_eal/linuxapp/eal/eal.c @@ -367,6 +367,7 @@ eal_usage(const char *prgname) " --"OPT_CREATE_UIO_DEV" Create /dev/uioX (usually done by hotplug)\n" " --"OPT_VFIO_INTR" Interrupt mode for VFIO (legacy|msi|msix)\n" " --"OPT_SINGLE_FILE_SEGMENTS" Put all hugepage memory in single files\n" + " --"OPT_LEGACY_MEM" Legacy memory mode (no dynamic allocation, contiguous segments)\n" "\n"); /* Allow the application to print its usage message too if hook is set */ if ( rte_application_usage_hook ) { diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c index dd18d98..5b18af9 100644 --- a/lib/librte_eal/linuxapp/eal/eal_memory.c +++ b/lib/librte_eal/linuxapp/eal/eal_memory.c @@ -940,8 +940,8 @@ huge_recover_sigbus(void) * 6. unmap the first mapping * 7. fill memsegs in configuration with contiguous zones */ -int -rte_eal_hugepage_init(void) +static int +eal_legacy_hugepage_init(void) { struct rte_mem_config *mcfg; struct hugepage_file *hugepage = NULL, *tmp_hp = NULL; @@ -1283,8 +1283,8 @@ getFileSize(int fd) * configuration and finds the hugepages which form that segment, mapping them * in order to form a contiguous block in the virtual memory space */ -int -rte_eal_hugepage_attach(void) +static int +eal_legacy_hugepage_attach(void) { const struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config; struct hugepage_file *hp = NULL; @@ -1435,6 +1435,20 @@ rte_eal_hugepage_attach(void) } int +rte_eal_hugepage_init(void) { + if (internal_config.legacy_mem) + return eal_legacy_hugepage_init(); + return -1; +} + +int +rte_eal_hugepage_attach(void) { + if (internal_config.legacy_mem) + return eal_legacy_hugepage_attach(); + return -1; +} + +int rte_eal_using_phys_addrs(void) { return phys_addrs_available;