Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753997AbaKHSyu (ORCPT ); Sat, 8 Nov 2014 13:54:50 -0500 Received: from mail-bn1on0113.outbound.protection.outlook.com ([157.56.110.113]:3045 "EHLO na01-bn1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752519AbaKHSyt (ORCPT ); Sat, 8 Nov 2014 13:54:49 -0500 X-WSS-ID: 0NEQHV7-07-RKC-02 X-M-MSG: From: Oded Gabbay To: David Airlie , Alex Deucher , Jerome Glisse CC: , , "John Bridgman" , Evgeny Pinchuk , Oded Gabbay , Ben Goz , Andrew Lewycky , Alexey Skidanov Subject: [PATCH v5 22/24] amdkfd: Implement the Get Clock Counters IOCTL Date: Sat, 8 Nov 2014 20:54:31 +0200 Message-ID: <1415472874-4222-1-git-send-email-oded.gabbay@amd.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1415471865-1893-1-git-send-email-oded.gabbay@amd.com> References: <1415471865-1893-1-git-send-email-oded.gabbay@amd.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.180.168.240] X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:165.204.84.221;CTRY:US;IPV:NLI;EFV:NLI;SFV:NSPM;SFS:(10019020)(979002)(6009001)(428002)(199003)(189002)(36756003)(102836001)(46102003)(48376002)(4396001)(107046002)(62966003)(92566001)(88136002)(53416004)(89996001)(120916001)(19580405001)(68736004)(93916002)(19580395003)(101416001)(77096003)(77156002)(50466002)(64706001)(50226001)(20776003)(33646002)(84676001)(105586002)(50986999)(86362001)(44976005)(104166001)(92726001)(21056001)(47776003)(31966008)(87936001)(229853001)(99396003)(97736003)(76176999)(87286001)(106466001)(95666004)(969003)(989001)(999001)(1009001)(1019001);DIR:OUT;SFP:1102;SCL:1;SRVR:CO1PR02MB205;H:atltwp01.amd.com;FPR:;MLV:ovrnspm;PTR:InfoDomainNonexistent;A:1;MX:1;LANG:en; X-Microsoft-Antispam: UriScan:; X-Microsoft-Antispam: BCL:0;PCL:0;RULEID:;SRVR:CO1PR02MB205; X-Exchange-Antispam-Report-Test: UriScan:; X-Exchange-Antispam-Report-CFA: BCL:0;PCL:0;RULEID:;SRVR:CO1PR02MB205; X-Forefront-PRVS: 0389EDA07F Authentication-Results: spf=none (sender IP is 165.204.84.221) smtp.mailfrom=Oded.Gabbay@amd.com; X-Exchange-Antispam-Report-CFA: BCL:0;PCL:0;RULEID:;SRVR:CO1PR02MB205; X-OriginatorOrg: amd4.onmicrosoft.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Evgeny Pinchuk Signed-off-by: Evgeny Pinchuk Signed-off-by: Oded Gabbay --- drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 29 ++++++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c index 1020faf..473f8e1 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c @@ -401,7 +401,34 @@ out: static long kfd_ioctl_get_clock_counters(struct file *filep, struct kfd_process *p, void __user *arg) { - return -ENODEV; + struct kfd_ioctl_get_clock_counters_args args; + struct kfd_dev *dev; + struct timespec time; + + if (copy_from_user(&args, arg, sizeof(args))) + return -EFAULT; + + dev = kfd_device_by_id(args.gpu_id); + if (dev == NULL) + return -EINVAL; + + /* Reading GPU clock counter from KGD */ + args.gpu_clock_counter = kfd2kgd->get_gpu_clock_counter(dev->kgd); + + /* No access to rdtsc. Using raw monotonic time */ + getrawmonotonic(&time); + args.cpu_clock_counter = (uint64_t)timespec_to_ns(&time); + + get_monotonic_boottime(&time); + args.system_clock_counter = (uint64_t)timespec_to_ns(&time); + + /* Since the counter is in nano-seconds we use 1GHz frequency */ + args.system_clock_freq = 1000000000; + + if (copy_to_user(arg, &args, sizeof(args))) + return -EFAULT; + + return 0; } -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/