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GET /api/patches/29683/?format=api
{ "id": 29683, "url": "https://patches.dpdk.org/api/patches/29683/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/patch/1507206350-215367-5-git-send-email-david.hunt@intel.com/", "project": { "id": 1, "url": "https://patches.dpdk.org/api/projects/1/?format=api", "name": "DPDK", "link_name": "dpdk", "list_id": "dev.dpdk.org", "list_email": "dev@dpdk.org", "web_url": "http://core.dpdk.org", "scm_url": "git://dpdk.org/dpdk", "webscm_url": "http://git.dpdk.org/dpdk", "list_archive_url": "https://inbox.dpdk.org/dev", "list_archive_url_format": "https://inbox.dpdk.org/dev/{}", "commit_url_format": "" }, "msgid": "<1507206350-215367-5-git-send-email-david.hunt@intel.com>", "list_archive_url": "https://inbox.dpdk.org/dev/1507206350-215367-5-git-send-email-david.hunt@intel.com", "date": "2017-10-05T12:25:45", "name": "[dpdk-dev,v6,4/9] examples/vm_power_mgr: add scale to medium freq fn", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": true, "hash": "463be98014b93b70d7e37cd6bc9e332f0b53eb10", "submitter": { "id": 342, "url": "https://patches.dpdk.org/api/people/342/?format=api", "name": "Hunt, David", "email": "david.hunt@intel.com" }, "delegate": null, "mbox": "https://patches.dpdk.org/project/dpdk/patch/1507206350-215367-5-git-send-email-david.hunt@intel.com/mbox/", "series": [], "comments": "https://patches.dpdk.org/api/patches/29683/comments/", "check": "success", "checks": "https://patches.dpdk.org/api/patches/29683/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@dpdk.org", "Delivered-To": "patchwork@dpdk.org", "Received": [ "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id 7FE781B1B3;\n\tThu, 5 Oct 2017 14:28:01 +0200 (CEST)", "from mga03.intel.com (mga03.intel.com [134.134.136.65])\n\tby dpdk.org (Postfix) with ESMTP id BD1947CE7\n\tfor <dev@dpdk.org>; Thu, 5 Oct 2017 14:27:57 +0200 (CEST)", "from orsmga005.jf.intel.com ([10.7.209.41])\n\tby orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384;\n\t05 Oct 2017 05:27:57 -0700", "from silpixa00397898.ir.intel.com ([10.237.223.116])\n\tby orsmga005.jf.intel.com with ESMTP; 05 Oct 2017 05:27:55 -0700" ], "X-ExtLoop1": "1", "X-IronPort-AV": "E=Sophos;i=\"5.42,481,1500966000\"; d=\"scan'208\";a=\"157056763\"", "From": "David Hunt <david.hunt@intel.com>", "To": "dev@dpdk.org", "Cc": "konstantin.ananyev@intel.com, jingjing.wu@intel.com,\n\tsantosh.shukla@caviumnetworks.com, David Hunt <david.hunt@intel.com>, \n\tNemanja Marjanovic <nemanja.marjanovic@intel.com>,\n\tRory Sexton <rory.sexton@intel.com>", "Date": "Thu, 5 Oct 2017 13:25:45 +0100", "Message-Id": "<1507206350-215367-5-git-send-email-david.hunt@intel.com>", "X-Mailer": "git-send-email 2.7.4", "In-Reply-To": "<1507206350-215367-1-git-send-email-david.hunt@intel.com>", "References": "<1507130720-48891-1-git-send-email-david.hunt@intel.com>\n\t<1507206350-215367-1-git-send-email-david.hunt@intel.com>", "Subject": "[dpdk-dev] [PATCH v6 4/9] examples/vm_power_mgr: add scale to\n\tmedium freq fn", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.15", "Precedence": "list", "List-Id": "DPDK patches and discussions <dev.dpdk.org>", "List-Unsubscribe": "<http://dpdk.org/ml/options/dev>,\n\t<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": "<http://dpdk.org/ml/listinfo/dev>,\n\t<mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org", "Sender": "\"dev\" <dev-bounces@dpdk.org>" }, "content": "Signed-off-by: Nemanja Marjanovic <nemanja.marjanovic@intel.com>\nSigned-off-by: Rory Sexton <rory.sexton@intel.com>\nSigned-off-by: David Hunt <david.hunt@intel.com>\n---\n examples/vm_power_manager/power_manager.c | 32 ++++++++++++++++++++++++++-----\n examples/vm_power_manager/power_manager.h | 13 +++++++++++++\n 2 files changed, 40 insertions(+), 5 deletions(-)", "diff": "diff --git a/examples/vm_power_manager/power_manager.c b/examples/vm_power_manager/power_manager.c\nindex 80705f9..1834a82 100644\n--- a/examples/vm_power_manager/power_manager.c\n+++ b/examples/vm_power_manager/power_manager.c\n@@ -108,7 +108,7 @@ set_host_cpus_mask(void)\n int\n power_manager_init(void)\n {\n-\tunsigned i, num_cpus;\n+\tunsigned int i, num_cpus, num_freqs;\n \tuint64_t cpu_mask;\n \tint ret = 0;\n \n@@ -121,15 +121,21 @@ power_manager_init(void)\n \trte_power_set_env(PM_ENV_ACPI_CPUFREQ);\n \tcpu_mask = global_enabled_cpus;\n \tfor (i = 0; cpu_mask; cpu_mask &= ~(1 << i++)) {\n-\t\tif (rte_power_init(i) < 0 || rte_power_freqs(i,\n-\t\t\t\tglobal_core_freq_info[i].freqs,\n-\t\t\t\tRTE_MAX_LCORE_FREQS) == 0) {\n-\t\t\tRTE_LOG(ERR, POWER_MANAGER, \"Unable to initialize power manager \"\n+\t\tif (rte_power_init(i) < 0)\n+\t\t\tRTE_LOG(ERR, POWER_MANAGER,\n+\t\t\t\t\t\"Unable to initialize power manager \"\n \t\t\t\t\t\"for core %u\\n\", i);\n+\t\tnum_freqs = rte_power_freqs(i, global_core_freq_info[i].freqs,\n+\t\t\t\t\tRTE_MAX_LCORE_FREQS);\n+\t\tif (num_freqs == 0) {\n+\t\t\tRTE_LOG(ERR, POWER_MANAGER,\n+\t\t\t\t\"Unable to get frequency list for core %u\\n\",\n+\t\t\t\ti);\n \t\t\tglobal_enabled_cpus &= ~(1 << i);\n \t\t\tnum_cpus--;\n \t\t\tret = -1;\n \t\t}\n+\t\tglobal_core_freq_info[i].num_freqs = num_freqs;\n \t\trte_spinlock_init(&global_core_freq_info[i].power_sl);\n \t}\n \tRTE_LOG(INFO, POWER_MANAGER, \"Detected %u host CPUs , enabled core mask:\"\n@@ -286,3 +292,19 @@ power_manager_disable_turbo_core(unsigned int core_num)\n \tPOWER_SCALE_CORE(disable_turbo, core_num, ret);\n \treturn ret;\n }\n+\n+int\n+power_manager_scale_core_med(unsigned int core_num)\n+{\n+\tint ret = 0;\n+\n+\tif (core_num >= POWER_MGR_MAX_CPUS)\n+\t\treturn -1;\n+\tif (!(global_enabled_cpus & (1ULL << core_num)))\n+\t\treturn -1;\n+\trte_spinlock_lock(&global_core_freq_info[core_num].power_sl);\n+\tret = rte_power_set_freq(core_num,\n+\t\t\t\tglobal_core_freq_info[core_num].num_freqs / 2);\n+\trte_spinlock_unlock(&global_core_freq_info[core_num].power_sl);\n+\treturn ret;\n+}\ndiff --git a/examples/vm_power_manager/power_manager.h b/examples/vm_power_manager/power_manager.h\nindex b74d09b..b52fb4c 100644\n--- a/examples/vm_power_manager/power_manager.h\n+++ b/examples/vm_power_manager/power_manager.h\n@@ -231,6 +231,19 @@ int power_manager_disable_turbo_core(unsigned int core_num);\n */\n uint32_t power_manager_get_current_frequency(unsigned core_num);\n \n+/**\n+ * Scale to medium frequency for the core specified by core_num.\n+ * It is thread-safe.\n+ *\n+ * @param core_num\n+ * The core number to change frequency\n+ *\n+ * @return\n+ * - 1 on success.\n+ * - 0 if frequency not changed.\n+ * - Negative on error.\n+ */\n+int power_manager_scale_core_med(unsigned int core_num);\n \n #ifdef __cplusplus\n }\n", "prefixes": [ "dpdk-dev", "v6", "4/9" ] }