Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933547AbaGQNd5 (ORCPT ); Thu, 17 Jul 2014 09:33:57 -0400 Received: from mail-bn1lp0142.outbound.protection.outlook.com ([207.46.163.142]:39852 "EHLO na01-bn1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932720AbaGQNdy (ORCPT ); Thu, 17 Jul 2014 09:33:54 -0400 X-WSS-ID: 0N8UZ0E-07-C4M-02 X-M-MSG: From: Oded Gabbay To: David Airlie , Jerome Glisse , "Alex Deucher" , Andrew Morton CC: John Bridgman , Joerg Roedel , Andrew Lewycky , =?UTF-8?q?Christian=20K=C3=B6nig?= , =?UTF-8?q?Michel=20D=C3=A4nzer?= , Ben Goz , Alexey Skidanov , Evgeny Pinchuk , "Evgeny Pinchuk" , Oded Gabbay , "Alex Deucher" , =?UTF-8?q?Christian=20K=C3=B6nig?= , , Subject: [PATCH v2 23/25] amdkfd: Implement the Get Clock Counters IOCTL Date: Thu, 17 Jul 2014 16:29:30 +0300 Message-ID: <1405603773-32688-24-git-send-email-oded.gabbay@amd.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1405603773-32688-1-git-send-email-oded.gabbay@amd.com> References: <1405603773-32688-1-git-send-email-oded.gabbay@amd.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.20.0.84] X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:165.204.84.221;CTRY:US;IPV:NLI;IPV:NLI;EFV:NLI;SFV:NSPM;SFS:(6009001)(428002)(199002)(189002)(62966002)(19580395003)(36756003)(101416001)(77096002)(86362001)(46102001)(77156001)(50466002)(87936001)(74502001)(85306003)(33646002)(20776003)(21056001)(84676001)(19580405001)(4396001)(50226001)(87286001)(48376002)(106466001)(76176999)(95666004)(89996001)(80022001)(229853001)(92726001)(64706001)(81342001)(83322001)(68736004)(31966008)(107046002)(88136002)(79102001)(85852003)(104166001)(102836001)(76482001)(83072002)(81542001)(74662001)(97736001)(50986999)(77982001)(47776003)(93916002)(105586002)(92566001)(44976005)(99396002);DIR:OUT;SFP:;SCL:1;SRVR:BLUPR02MB033;H:atltwp01.amd.com;FPR:;MLV:sfv;PTR:InfoDomainNonexistent;MX:1;LANG:en; X-Microsoft-Antispam: BCL:0;PCL:0;RULEID: X-Forefront-PRVS: 027578BB13 Authentication-Results: spf=none (sender IP is 165.204.84.221) smtp.mailfrom=Oded.Gabbay@amd.com; 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/radeon/amdkfd/kfd_chardev.c | 29 ++++++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c b/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c index 085bd91..72d8e79 100644 --- a/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c @@ -315,7 +315,34 @@ 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; } -- 1.9.1 -- 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/