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 2D9457D57 for ; Fri, 25 Aug 2017 18:02:33 +0200 (CEST) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 25 Aug 2017 09:02:33 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.41,426,1498546800"; d="scan'208";a="1188144557" Received: from silpixa00397898.ir.intel.com (HELO silpixa00397898.ger.corp.intel.com) ([10.237.223.116]) by fmsmga001.fm.intel.com with ESMTP; 25 Aug 2017 09:02:32 -0700 From: David Hunt To: dev@dpdk.org Cc: David Hunt , Nemanja Marjanovic , Rory Sexton Date: Fri, 25 Aug 2017 17:02:16 +0100 Message-Id: <1503676941-80981-6-git-send-email-david.hunt@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1503676941-80981-1-git-send-email-david.hunt@intel.com> References: <1503676941-80981-1-git-send-email-david.hunt@intel.com> Subject: [dpdk-dev] [PATCH v1 05/10] examples/vm_power_mgr: add scale to medium freq fn 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, 25 Aug 2017 16:02:35 -0000 Signed-off-by: Nemanja Marjanovic Signed-off-by: Rory Sexton Signed-off-by: David Hunt --- examples/vm_power_manager/power_manager.c | 15 +++++++++++++++ examples/vm_power_manager/power_manager.h | 13 +++++++++++++ 2 files changed, 28 insertions(+) diff --git a/examples/vm_power_manager/power_manager.c b/examples/vm_power_manager/power_manager.c index 2644fce..7b0afda 100644 --- a/examples/vm_power_manager/power_manager.c +++ b/examples/vm_power_manager/power_manager.c @@ -250,3 +250,18 @@ power_manager_scale_core_max(unsigned core_num) POWER_SCALE_CORE(max, core_num, ret); return ret; } + +int +power_manager_scale_core_med(unsigned int core_num) +{ + int ret = 0; + + if (core_num >= POWER_MGR_MAX_CPUS) + return -1; + if (!(global_enabled_cpus & (1ULL << core_num))) + return -1; + rte_spinlock_lock(&global_core_freq_info[core_num].power_sl); + ret = rte_power_set_freq(core_num, 5); + rte_spinlock_unlock(&global_core_freq_info[core_num].power_sl); + return ret; +} diff --git a/examples/vm_power_manager/power_manager.h b/examples/vm_power_manager/power_manager.h index 1b45bab..6cdec7a 100644 --- a/examples/vm_power_manager/power_manager.h +++ b/examples/vm_power_manager/power_manager.h @@ -179,6 +179,19 @@ int power_manager_scale_core_max(unsigned core_num); */ uint32_t power_manager_get_current_frequency(unsigned core_num); +/** + * Scale to medium frequency for the core specified by core_num. + * It is thread-safe. + * + * @param core_num + * The core number to change frequency + * + * @return + * - 1 on success. + * - 0 if frequency not changed. + * - Negative on error. + */ +int power_manager_scale_core_med(unsigned int core_num); #ifdef __cplusplus } -- 2.7.4