From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <marko.kovacevic@intel.com> Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by dpdk.org (Postfix) with ESMTP id D1126A491; Fri, 2 Feb 2018 16:02:55 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 02 Feb 2018 07:02:53 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.46,448,1511856000"; d="scan'208";a="200857509" Received: from silpixa00399502.ir.intel.com (HELO silpixa00399502.ger.corp.intel.com) ([10.237.223.218]) by fmsmga006.fm.intel.com with ESMTP; 02 Feb 2018 07:02:51 -0800 From: Marko Kovacevic <marko.kovacevic@intel.com> To: dev@dpdk.org Cc: john.mcnamara@intel.com, vipin.varghese@intel.com, bruce.richardson@intel.com, stable@dpdk.org, Marko Kovacevic <marko.kovacevic@intel.com> Date: Fri, 2 Feb 2018 15:02:32 +0000 Message-Id: <20180202150232.6611-1-marko.kovacevic@intel.com> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20180201165347.15646-1-marko.kovacevic@intel.com> References: <20180201165347.15646-1-marko.kovacevic@intel.com> Subject: [dpdk-dev] [PATCH v3] doc: update definition of lcore id and lcore index X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions <dev.dpdk.org> List-Unsubscribe: <https://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: <https://dpdk.org/ml/listinfo/dev>, <mailto:dev-request@dpdk.org?subject=subscribe> X-List-Received-Date: Fri, 02 Feb 2018 15:02:57 -0000 Added examples in lcore index for better explanation on various examples, Sited examples for lcore id. Signed-off-by: Marko Kovacevic <marko.kovacevic@intel.com> --- V3: - Rephrased examples for lcore index and id - Bruce V2: - Added clearer description to lcore id - Bruce - Reframed examples for lcore index - Bruce --- lib/librte_eal/common/include/rte_lcore.h | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/lib/librte_eal/common/include/rte_lcore.h b/lib/librte_eal/common/include/rte_lcore.h index d84bcff..0472220 100644 --- a/lib/librte_eal/common/include/rte_lcore.h +++ b/lib/librte_eal/common/include/rte_lcore.h @@ -57,7 +57,14 @@ RTE_DECLARE_PER_LCORE(unsigned, _lcore_id); /**< Per thread "lcore id". */ RTE_DECLARE_PER_LCORE(rte_cpuset_t, _cpuset); /**< Per thread "cpuset". */ /** - * Return the ID of the execution unit we are running on. + * Return the Application thread ID of the execution unit. + * + * Note: in most cases the lcore id returned here will also correspond + * to the processor id of the CPU on which the thread is pinned, this + * will not be the case if the user has explicitly changed the thread to + * core affinities using --lcores EAL argument e.g. --lcores '(0-3)@10' + * to run threads with lcore IDs 0, 1, 2 and 3 on physical core 10.. + * * @return * Logical core ID (in EAL thread) or LCORE_ID_ANY (in non-EAL thread) */ @@ -94,7 +101,12 @@ rte_lcore_count(void) /** * Return the index of the lcore starting from zero. - * The order is physical or given by command line (-l option). + * + * When option -c or -l is given, the index corresponds + * to the order in the list. + * For example: + * -c 0x30, lcore 4 has index 0, and 5 has index 1. + * -l 22,18 lcore 22 has index 0, and 18 has index 1. * * @param lcore_id * The targeted lcore, or -1 for the current one. -- 2.9.5