From patchwork Thu Mar 14 14:47:52 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marcin Hajkowski X-Patchwork-Id: 51191 X-Patchwork-Delegate: thomas@monjalon.net 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 ED1C15323; Thu, 14 Mar 2019 15:51:54 +0100 (CET) Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by dpdk.org (Postfix) with ESMTP id 726534CA9 for ; Thu, 14 Mar 2019 15:51:50 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Mar 2019 07:51:49 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,478,1544515200"; d="scan'208";a="151697835" Received: from mhajkowx-mobl.ger.corp.intel.com ([10.104.14.190]) by fmsmga002.fm.intel.com with ESMTP; 14 Mar 2019 07:51:48 -0700 From: Hajkowski To: david.hunt@intel.com Cc: dev@dpdk.org, Marcin Hajkowski Date: Thu, 14 Mar 2019 15:47:52 +0100 Message-Id: <20190314144752.13812-5-marcinx.hajkowski@intel.com> X-Mailer: git-send-email 2.20.1.windows.1 In-Reply-To: <20190314144752.13812-1-marcinx.hajkowski@intel.com> References: <20190314144752.13812-1-marcinx.hajkowski@intel.com> MIME-Version: 1.0 Subject: [dpdk-dev] [PATCH 4/4] power: send confirmation cmd to vm guest 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" From: Marcin Hajkowski Use new guest channel API to send confirmation message for received power command. Signed-off-by: Marcin Hajkowski --- examples/vm_power_manager/channel_monitor.c | 64 +++++++++++++++++++-- 1 file changed, 58 insertions(+), 6 deletions(-) diff --git a/examples/vm_power_manager/channel_monitor.c b/examples/vm_power_manager/channel_monitor.c index 1a3a0fa76..4d8568d87 100644 --- a/examples/vm_power_manager/channel_monitor.c +++ b/examples/vm_power_manager/channel_monitor.c @@ -627,6 +627,39 @@ apply_policy(struct policy *pol) apply_workload_profile(pol); } +static int +write_binary_packet(struct channel_packet *pkt, struct channel_info *chan_info) +{ + int ret, buffer_len = sizeof(*pkt); + void *buffer = pkt; + + if (chan_info->fd == 0) { + RTE_LOG(ERR, CHANNEL_MONITOR, "Channel is not connected\n"); + return -1; + } + + while (buffer_len > 0) { + ret = write(chan_info->fd, buffer, buffer_len); + if (ret == -1) { + if (errno == EINTR) + continue; + return -1; + } + buffer = (char *)buffer + ret; + buffer_len -= ret; + } + return 0; +} + +static int +send_ack_for_received_cmd(struct channel_packet *pkt, + struct channel_info *chan_info, + uint32_t command) +{ + pkt->command = command; + return write_binary_packet(pkt, chan_info); +} + static int process_request(struct channel_packet *pkt, struct channel_info *chan_info) { @@ -645,33 +678,52 @@ process_request(struct channel_packet *pkt, struct channel_info *chan_info) else core_num = pkt->resource_id; + bool valid_unit = true; + int scale_res; + switch (pkt->unit) { case(CPU_POWER_SCALE_MIN): - power_manager_scale_core_min(core_num); + scale_res = power_manager_scale_core_min(core_num); break; case(CPU_POWER_SCALE_MAX): - power_manager_scale_core_max(core_num); + scale_res = power_manager_scale_core_max(core_num); break; case(CPU_POWER_SCALE_DOWN): - power_manager_scale_core_down(core_num); + scale_res = power_manager_scale_core_down(core_num); break; case(CPU_POWER_SCALE_UP): - power_manager_scale_core_up(core_num); + scale_res = power_manager_scale_core_up(core_num); break; case(CPU_POWER_ENABLE_TURBO): - power_manager_enable_turbo_core(core_num); + scale_res = power_manager_enable_turbo_core(core_num); break; case(CPU_POWER_DISABLE_TURBO): - power_manager_disable_turbo_core(core_num); + scale_res = power_manager_disable_turbo_core(core_num); break; default: + valid_unit = false; break; } + + int ret = -1; + if (valid_unit) + ret = send_ack_for_received_cmd(pkt, + chan_info, + scale_res ? CPU_POWER_CMD_ACK : CPU_POWER_CMD_NAK); + if (ret < 0) + RTE_LOG(DEBUG, CHANNEL_MONITOR, "Error during sending ack command " + "or unexpected unit type.\n"); + } if (pkt->command == PKT_POLICY) { RTE_LOG(INFO, CHANNEL_MONITOR, "Processing policy request %s\n", pkt->vm_name); + int ret = send_ack_for_received_cmd(pkt, + chan_info, + CPU_POWER_CMD_ACK); + if (ret < 0) + RTE_LOG(DEBUG, CHANNEL_MONITOR, "Error during sending ack command.\n"); update_policy(pkt); policy_is_set = 1; }