From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by dpdk.org (Postfix) with ESMTP id 316611B86A for ; Mon, 9 Apr 2018 20:01:32 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 09 Apr 2018 11:01:31 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.48,427,1517904000"; d="scan'208";a="218993592" Received: from irvmail001.ir.intel.com ([163.33.26.43]) by fmsmga006.fm.intel.com with ESMTP; 09 Apr 2018 11:01:28 -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 w39I1RXX031099; Mon, 9 Apr 2018 19:01:27 +0100 Received: from sivswdev01.ir.intel.com (localhost [127.0.0.1]) by sivswdev01.ir.intel.com with ESMTP id w39I1RvH027850; Mon, 9 Apr 2018 19:01:27 +0100 Received: (from aburakov@localhost) by sivswdev01.ir.intel.com with LOCAL id w39I1RYk027838; Mon, 9 Apr 2018 19:01:27 +0100 From: Anatoly Burakov To: dev@dpdk.org Cc: keith.wiles@intel.com, jianfeng.tan@intel.com, andras.kovacs@ericsson.com, laszlo.vadkeri@ericsson.com, benjamin.walker@intel.com, bruce.richardson@intel.com, thomas@monjalon.net, konstantin.ananyev@intel.com, kuralamudhan.ramakrishnan@intel.com, louise.m.daly@intel.com, nelio.laranjeiro@6wind.com, yskoh@mellanox.com, pepperjo@japf.ch, jerin.jacob@caviumnetworks.com, hemant.agrawal@nxp.com, olivier.matz@6wind.com, shreyansh.jain@nxp.com, gowrishankar.m@linux.vnet.ibm.com Date: Mon, 9 Apr 2018 19:00:28 +0100 Message-Id: <34990f268c2e1e2c448a42d279064561492b12d0.1523296700.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 v5 25/70] eal: add function to walk all memsegs 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, 09 Apr 2018 18:01:33 -0000 For code that might need to iterate over list of allocated segments, using this API will make it more resilient to internal API changes and will prevent copying the same iteration code over and over again. Additionally, down the line there will be locking implemented, so users of this API will not need to care about locking either. Signed-off-by: Anatoly Burakov Tested-by: Santosh Shukla Tested-by: Hemant Agrawal --- lib/librte_eal/common/eal_common_memory.c | 21 +++++++++++++++++++++ lib/librte_eal/common/include/rte_memory.h | 25 +++++++++++++++++++++++++ lib/librte_eal/rte_eal_version.map | 1 + 3 files changed, 47 insertions(+) diff --git a/lib/librte_eal/common/eal_common_memory.c b/lib/librte_eal/common/eal_common_memory.c index 5b8ced4..947db1f 100644 --- a/lib/librte_eal/common/eal_common_memory.c +++ b/lib/librte_eal/common/eal_common_memory.c @@ -218,6 +218,27 @@ rte_mem_lock_page(const void *virt) return mlock((void *)aligned, page_size); } +int __rte_experimental +rte_memseg_walk(rte_memseg_walk_t func, void *arg) +{ + struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config; + int i, ret; + + for (i = 0; i < RTE_MAX_MEMSEG; i++) { + const struct rte_memseg *ms = &mcfg->memseg[i]; + + if (ms->addr == NULL) + continue; + + ret = func(ms, arg); + if (ret < 0) + return -1; + if (ret > 0) + return 1; + } + return 0; +} + /* init memory subsystem */ int rte_eal_memory_init(void) diff --git a/lib/librte_eal/common/include/rte_memory.h b/lib/librte_eal/common/include/rte_memory.h index 302f865..93eadaa 100644 --- a/lib/librte_eal/common/include/rte_memory.h +++ b/lib/librte_eal/common/include/rte_memory.h @@ -20,6 +20,7 @@ extern "C" { #endif #include +#include #include __extension__ @@ -130,6 +131,30 @@ phys_addr_t rte_mem_virt2phy(const void *virt); rte_iova_t rte_mem_virt2iova(const void *virt); /** + * Memseg walk function prototype. + * + * Returning 0 will continue walk + * Returning 1 will stop the walk + * Returning -1 will stop the walk and report error + */ +typedef int (*rte_memseg_walk_t)(const struct rte_memseg *ms, void *arg); + +/** + * Walk list of all memsegs. + * + * @param func + * Iterator function + * @param arg + * Argument passed to iterator + * @return + * 0 if walked over the entire list + * 1 if stopped by the user + * -1 if user function reported error + */ +int __rte_experimental +rte_memseg_walk(rte_memseg_walk_t func, void *arg); + +/** * Get the layout of the available physical memory. * * It can be useful for an application to have the full physical diff --git a/lib/librte_eal/rte_eal_version.map b/lib/librte_eal/rte_eal_version.map index d9fc458..716b965 100644 --- a/lib/librte_eal/rte_eal_version.map +++ b/lib/librte_eal/rte_eal_version.map @@ -223,6 +223,7 @@ EXPERIMENTAL { rte_eal_mbuf_user_pool_ops; rte_log_register_type_and_pick_level; rte_malloc_dump_heaps; + rte_memseg_walk; rte_mp_action_register; rte_mp_action_unregister; rte_mp_reply; -- 2.7.4