From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9E7FCEE49AE for ; Wed, 23 Aug 2023 07:31:37 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id F2E1B280061; Wed, 23 Aug 2023 03:31:36 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id EDE0828005F; Wed, 23 Aug 2023 03:31:36 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D57AB280061; Wed, 23 Aug 2023 03:31:36 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id C3A0E28005F for ; Wed, 23 Aug 2023 03:31:36 -0400 (EDT) Received: from smtpin21.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id 93179A04E1 for ; Wed, 23 Aug 2023 07:31:36 +0000 (UTC) X-FDA: 81154549392.21.02A7AC3 Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.126]) by imf03.hostedemail.com (Postfix) with ESMTP id 992D72000B for ; Wed, 23 Aug 2023 07:31:31 +0000 (UTC) Authentication-Results: imf03.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b=L30x9VMg; dmarc=pass (policy=none) header.from=intel.com; arc=reject ("signature check failed: fail, {[1] = sig:microsoft.com:reject}"); spf=pass (imf03.hostedemail.com: domain of fengwei.yin@intel.com designates 134.134.136.126 as permitted sender) smtp.mailfrom=fengwei.yin@intel.com ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1692775893; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=lgeW9msq6GhHjkp7BvFhdIIcaZjx/1RzDXT9CV4pTm4=; b=b1PEzpmt8nbA4hhKxkroGOM1i+JMp29bIaMoMAX3wR2tAZ8wwP8fAQeGuflnHa5x4YTnJz y77BMP4y9dAUZ1cd48ypb2zt8kmW1J68RaVJ7fyJxam9Zebf8XR6ZDYcvuKGN33UOGVhG1 +xt8gee0B/XyubGFUHHcn1Qh/fpmVhA= ARC-Authentication-Results: i=2; imf03.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b=L30x9VMg; dmarc=pass (policy=none) header.from=intel.com; arc=reject ("signature check failed: fail, {[1] = sig:microsoft.com:reject}"); spf=pass (imf03.hostedemail.com: domain of fengwei.yin@intel.com designates 134.134.136.126 as permitted sender) smtp.mailfrom=fengwei.yin@intel.com ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1692775893; a=rsa-sha256; cv=fail; b=ACxIUaJHH7s5kb6Y+BVwlV66yOOb0TcibwNK4iMDG7YmBQPZDShZT+9eDqCMzbUtdzntQA AzkbuudK+G+ZUhRSWZHOGVC09BWC4I3s33Mn2XJhJ7UyJ/WTWzI35G6ivjNwykEIPeaLqn mPjdOnRF58YYVQ2Nc8a3Y9AX9VShvlY= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1692775891; x=1724311891; h=message-id:date:subject:to:cc:references:from: in-reply-to:content-transfer-encoding:mime-version; bh=SkZnXfr9Wdt6nuWrspTepXLIOeKnI2LFcfXCCAJHg0E=; b=L30x9VMgK9AJMKG5EDUMMI3+xYDaj7yolHTat4z44bs7BQvOh2p8Bimw Xr7Rc65BtI6lTJOSN0RpfSz47ADH9XJXxjCOOa7I7ym5wFKioO6lp6mIF m4hv4ksJgFY8V4A9X1LoqNVz96lgeJkgFB/KJ8RD0vhPSFupX1TMKhv3I J06jwGT+S1w106i3mOVXTKA6+in+52pJ2cKnF842yvQKIN1HtI0FFbSXz PlGBFnZ/tz1s9kGK1Yh2yXJblXM38gmRNmv01owKPlnZNrGIgkcfhgNlI OOyyA7iiVp2Vx0J9cTWPbflt1Qc265M5ZqDgU00zxGQBe4zdxBYF7fAjP w==; X-IronPort-AV: E=McAfee;i="6600,9927,10810"; a="359076964" X-IronPort-AV: E=Sophos;i="6.01,195,1684825200"; d="scan'208";a="359076964" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Aug 2023 00:31:19 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.01,202,1684825200"; d="scan'208";a="880302503" Received: from fmsmsx603.amr.corp.intel.com ([10.18.126.83]) by fmsmga001.fm.intel.com with ESMTP; 23 Aug 2023 00:31:24 -0700 Received: from fmsmsx612.amr.corp.intel.com (10.18.126.92) by fmsmsx603.amr.corp.intel.com (10.18.126.83) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Wed, 23 Aug 2023 00:31:19 -0700 Received: from fmsmsx601.amr.corp.intel.com (10.18.126.81) by fmsmsx612.amr.corp.intel.com (10.18.126.92) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Wed, 23 Aug 2023 00:31:18 -0700 Received: from fmsedg601.ED.cps.intel.com (10.1.192.135) by fmsmsx601.amr.corp.intel.com (10.18.126.81) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27 via Frontend Transport; Wed, 23 Aug 2023 00:31:18 -0700 Received: from NAM10-MW2-obe.outbound.protection.outlook.com (104.47.55.104) by edgegateway.intel.com (192.55.55.70) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.27; Wed, 23 Aug 2023 00:31:18 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=il0+AENr6jmpK4FWzbG8sawIQ6jEE8/cxa8P2YPbXDsIBHbuUfBrU9hVcNSWBOOQNCkyuRN05z1yaPWOhB6wiuJ1ZldmTVn+94OO6HNEchGfrrdOfOV3KvJEUyAEG2JXOLHHqzoM3uFYo367A6daV9wqNFjiFfUMPJCPCIC/N+HREGR8kAZEWHlB2K8JHXKNaKA4A+6lzqrFPFvSYHc/rEp/Q8bsXbKs769trY2SaKFgIuGndFiU9RibKxsVyHmcQTgHGJRdSO3zRHdGPDUMLQPpqFCBhDpODcSHUCChh1ifK5Zdc6wUP52mZZVoy0RSh2ZF8gM65F38Xl9jYskSIw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=lgeW9msq6GhHjkp7BvFhdIIcaZjx/1RzDXT9CV4pTm4=; b=f1mRpEMZwVE3yLfTP2QzKa+GcCTLl4UWV8IVZMVsDMoRwpLCcmzsHjyubEBiEbdXN/nk4lKianbse9m+7epjGOM30+cliunU58jt47BSqKPAoYEhspjhE35UrLVWak+nkt45Z7FF7XAd0MeKgok1I9eUqQVgJY019jQGJDjRJKggRxw0QQN5IrMPK5U5jCKxrCKnF8+bYPSywTslE82QkxAwTzSYryeR96w35hdrqR+ETRu0EjFXQ+eS4li3VTfXO051lARdOoah0OE6mXvUWedL/1IDI+Xk2JI0dPKqq0gWhCvrkw75ab71HCKCuHz8YQJ9Ho5fiiminB7iCiJUnw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=intel.com; dmarc=pass action=none header.from=intel.com; dkim=pass header.d=intel.com; arc=none Received: from CO1PR11MB4820.namprd11.prod.outlook.com (2603:10b6:303:6f::8) by SA1PR11MB6847.namprd11.prod.outlook.com (2603:10b6:806:29e::9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6699.25; Wed, 23 Aug 2023 07:31:16 +0000 Received: from CO1PR11MB4820.namprd11.prod.outlook.com ([fe80::221b:d422:710b:c9e6]) by CO1PR11MB4820.namprd11.prod.outlook.com ([fe80::221b:d422:710b:c9e6%3]) with mapi id 15.20.6699.025; Wed, 23 Aug 2023 07:31:16 +0000 Message-ID: Date: Wed, 23 Aug 2023 15:28:50 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Firefox/102.0 Thunderbird/102.11.0 Subject: Re: [RFC PATCH 1/4] perf: Convert perf_mmap_(alloc,free)_page to folios Content-Language: en-US To: "Matthew Wilcox (Oracle)" , CC: , , , , , , References: <20230821202016.2910321-1-willy@infradead.org> <20230821202016.2910321-2-willy@infradead.org> From: Yin Fengwei In-Reply-To: <20230821202016.2910321-2-willy@infradead.org> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: KL1PR01CA0059.apcprd01.prod.exchangelabs.com (2603:1096:820:5::23) To CO1PR11MB4820.namprd11.prod.outlook.com (2603:10b6:303:6f::8) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1PR11MB4820:EE_|SA1PR11MB6847:EE_ X-MS-Office365-Filtering-Correlation-Id: ebe6968c-a554-4373-4fc9-08dba3aaef44 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:CO1PR11MB4820.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(346002)(396003)(136003)(39860400002)(366004)(376002)(451199024)(1800799009)(186009)(31686004)(478600001)(6666004)(6486002)(83380400001)(38100700002)(36756003)(2906002)(26005)(53546011)(6506007)(2616005)(6512007)(31696002)(4326008)(82960400001)(41300700001)(316002)(66946007)(5660300002)(66556008)(8936002)(8676002)(86362001)(66476007)(43740500002)(45980500001);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?YkVnTnl5SnI3Z2xXMHVtM1BJUlhLcHdlTVdOUXZYUVNHb1c4QVFvV3QyVWxq?= =?utf-8?B?b1d1VUtFcTZRRTRYSkxPTytsVWk5Nm9hYWswNEE5QnJNamNMMjRRZkwyZzFq?= =?utf-8?B?TzJyYWFqRWxFdkhDNEdOdUU5eXRUVUxKRTdyT0xMSlBlKzAyT3B1Wk11RElu?= =?utf-8?B?WWRhUVF4UXFjYU5NNTIyZWNrUHNabFM4NDNoajM5bHZoNThZZkNSZmEyc1dn?= =?utf-8?B?S3NKYWYyV0wrdUxpb041VG1UbS9wWHVHalZVVFpSdTJNZVo3M092NkVsOGox?= =?utf-8?B?NWdXY0VRTi9uMjZKclJWTGV0TnpUSXpyM0VzYmZUd3BuMVNXZzJiVkhGRkVl?= =?utf-8?B?UTFwdWpxMFB5YzUrWVU0dFJxWThucDFucXFZYVBMK3lkRitjUzBZR1lORU5z?= =?utf-8?B?elJIMlNmaWFaVG16RSt2aHNnYnBnbVlsTWl3Z3FtcjhBVVVERmF4eWdRMm5M?= =?utf-8?B?ZytZbzVOQWp5M0FmbWpiYzdHZmJKZVV4RFZDdnJ1NnBXV0t2VVA4d2s4dllS?= =?utf-8?B?SFUzTHdrMlJQVWY0bERoc2wwY2xsVWswRFhJcXpHTlBzRUhseHlaeEdMTkFY?= =?utf-8?B?OFdLMHNuSWJ6ei9qV1pLNUFqTXJHckNxQmVzbE5qdVJQL2xQOGJaWmNWL2hB?= =?utf-8?B?Z2s1V1NMV1B4YUxSZmpKV0FZdWlxS3F4REtua1RNZXh5MjVEbVk0d1gzdHNH?= =?utf-8?B?Ny9mc242UHVWZk5zaWNKcUp6dUlxUTh1WkNBMEp6T0x3QlFrNG1zY2pZYTFZ?= =?utf-8?B?U1BrbzBtMUdSMWZnQ0dsUTErTFJpVFNITHZPbERxNHk1NHVVU1h4b04zZU05?= =?utf-8?B?MUIvdGw0UGZOcWlreDl1bXR1aGxKd0txSmF2Y2x0dmU2Z0x4Z0l6REdEK0ds?= =?utf-8?B?QnQwbXlYN092d1ZDYlZ4cDlMZWNxS3FzUUdONlRpZFBtQ2VmSHdhOFdodGxl?= =?utf-8?B?SGpRWnkzUlI5eXJOeEY5dHl1REZvMXRFUXRTeU5jazB0NzVrWmYvM1JuZS9E?= =?utf-8?B?MTBKaWxudnZUOXE0azJ3cDhHOVhTK1FhZlRsaVVvK1g2NHArUG1wSDRxVi9s?= =?utf-8?B?dFdrbEt4VDE3Z0M3RldySnFHcSs2a2FoTWlLOEJFWTJiVlZYZGdteUN2REVr?= =?utf-8?B?aXlwMC9JOUFDU0sxN0lpZm8reEdCRkw0TWM5L3I5NUhTNHpZVm04a0owRHFr?= =?utf-8?B?U2F2Z0h3MVFpYkhFdGJ1eW9RNGdwTXcxTEhwbkVxeU1IdnZDSmoyV2JaSEdL?= =?utf-8?B?dXZSYzVnWmZsZVg4ZEQ0RGk2aUVyVlBheklVdjltWDF1WnN4MTZYRGQ0d2l5?= =?utf-8?B?TFE2S2g0Rld5ZGwvK2xCeTI4TEFXc0FJeHVCNU8zczNvdjAwTEV4UEdINmYx?= =?utf-8?B?bldPNHBIU0JmdGVqNm9rbjhMNHlGcXdCK3kwUDJpUU0xSXhpY1ZKQit4ZlhN?= =?utf-8?B?a0xFSmRRUGVscVdQMlp6K2svOUpWVnBpa0Z1eGhsYU5nVEJqaGhGVjNXV2Jx?= =?utf-8?B?K1I3OGd1TTBrZTZuRmVVcGozaDk4bkx3ejdWbDlvMFh3UnlpRkx2V2xFeWxs?= =?utf-8?B?OWFKUnNvaytla0ZjNWZVSzhEbnpjRktURW9IRHBtcEtBWkh3OFhCUUt2UmVy?= =?utf-8?B?d0FhNEltaFEwUCt5UWQ0aTlOQzZyakt4TGk4dGw0ZmwwTEY4WTJEc1NxdVYy?= =?utf-8?B?Q2lvNTNOeVNUTlBUbmZJMW9MR2hWQlpkU250S01EbzVSenlMNTRUNElOTUgw?= =?utf-8?B?RUxQTjZ2WWhscUkxWWRCOXBxREY5K2lHaDlsL1A5ZmpWUE8vRVVNYm84SVFQ?= =?utf-8?B?b1dvQWtqb3U4ZEdHWmVMVHZOUDFIS3pTWmsxQ25rUXdhVEw5d1lxeGxZaGk4?= =?utf-8?B?UTZZNlcrQlZiQklyQ0VZQkFycjhmajllWlprNTBYUWVTbFd5ZVZoY2hoanZp?= =?utf-8?B?aXRQLzFUWWV4V2dyVEU1aWF4ZnRvbTRZUVF3RTRLU3J2SnhQRzdGVlpkOWtn?= =?utf-8?B?TmNGOUMxbVpRK0tFUEVKRU4xWkpLS09HcW4zSUxuNm42SndpbnRjL2xXcEk0?= =?utf-8?B?ckQ3UUIvblhhQk1LcGUvd3REWFY4VDBvek9CTHZLZWhwbHg1cUE0Ykd5bEkv?= =?utf-8?Q?YfXznyAtlX5ySGvUSXUJDBaXm?= X-MS-Exchange-CrossTenant-Network-Message-Id: ebe6968c-a554-4373-4fc9-08dba3aaef44 X-MS-Exchange-CrossTenant-AuthSource: CO1PR11MB4820.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Aug 2023 07:31:16.0284 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: cCzZNDrmRhcxarVz8jKJ02dVzfu4QrNqJygrY9ZS1XrjzAUtiol7tkJMhDAMgOqPpIFZkYVkF+g4668/u7yA7g== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR11MB6847 X-OriginatorOrg: intel.com X-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 992D72000B X-Stat-Signature: cerscb4tazns17gs91pxijiqygznszay X-HE-Tag: 1692775891-436604 X-HE-Meta: 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 O+jeHsL7 CupnXRmrNnpN/Nezmn3axVIaGRMK0SBKzENcAjbrSalH5v2M+IvrStHegeOyL34Cxw5xIYV+2X2Gt53jEBkGMT1Xs93xsyu7KCAHFLywUrSpwWuKWkQyat2Susz6PSnckgiOXhBMz7bCn1iPiKkSfV86Mgxkt6/VqTDpcYduxlo9XcfGDn4D8B52jAJoC38SUnD0bYukjOi/x16ZHHCpw6ZkhjsgQkoVd0Vwz6O6+fQG4tvNcKkBhCpPzKmBehY+LEKEXiEuQSeZL0r0Af0LU471/wyOiIdfBj84pAS00CdUeQTvFFv3yKaASMO7aMI8BvWUxk6ZQN59f6FV5PXYtR1Xi9NS8BHCTow1+0d4bJcbPhZPrEOpy/XMHLnqLChl+JkIlAR1muvlS3L87HAlZi35DPtd0r/nETiB3 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 8/22/23 04:20, Matthew Wilcox (Oracle) wrote: > Use the folio API to alloc & free memory. Also pass in the node ID > instead of the CPU ID since we already did that calculation in the > caller. And call numa_mem_id() instead of leaving the node ID as > -1 and having the MM call numa_mem_id() each time. > > Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Yin Fengwei Regards Yin, Fengwei > --- > kernel/events/ring_buffer.c | 26 ++++++++++++-------------- > 1 file changed, 12 insertions(+), 14 deletions(-) > > diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c > index fb1e180b5f0a..cc90d5299005 100644 > --- a/kernel/events/ring_buffer.c > +++ b/kernel/events/ring_buffer.c > @@ -770,7 +770,7 @@ void rb_free_aux(struct perf_buffer *rb) > #ifndef CONFIG_PERF_USE_VMALLOC > > /* > - * Back perf_mmap() with regular GFP_KERNEL-0 pages. > + * Back perf_mmap() with regular GFP_KERNEL pages. > */ > > static struct page * > @@ -785,25 +785,23 @@ __perf_mmap_to_page(struct perf_buffer *rb, unsigned long pgoff) > return virt_to_page(rb->data_pages[pgoff - 1]); > } > > -static void *perf_mmap_alloc_page(int cpu) > +static void *perf_mmap_alloc_page(int node) > { > - struct page *page; > - int node; > + struct folio *folio; > > - node = (cpu == -1) ? cpu : cpu_to_node(cpu); > - page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0); > - if (!page) > + folio = __folio_alloc_node(GFP_KERNEL | __GFP_ZERO, 0, node); > + if (!folio) > return NULL; > > - return page_address(page); > + return folio_address(folio); > } > > static void perf_mmap_free_page(void *addr) > { > - struct page *page = virt_to_page(addr); > + struct folio *folio = virt_to_folio(addr); > > - page->mapping = NULL; > - __free_page(page); > + folio->mapping = NULL; > + folio_put(folio); > } > > struct perf_buffer *rb_alloc(int nr_pages, long watermark, int cpu, int flags) > @@ -818,17 +816,17 @@ struct perf_buffer *rb_alloc(int nr_pages, long watermark, int cpu, int flags) > if (order_base_2(size) > PAGE_SHIFT+MAX_ORDER) > goto fail; > > - node = (cpu == -1) ? cpu : cpu_to_node(cpu); > + node = (cpu == -1) ? numa_mem_id() : cpu_to_node(cpu); > rb = kzalloc_node(size, GFP_KERNEL, node); > if (!rb) > goto fail; > > - rb->user_page = perf_mmap_alloc_page(cpu); > + rb->user_page = perf_mmap_alloc_page(node); > if (!rb->user_page) > goto fail_user_page; > > for (i = 0; i < nr_pages; i++) { > - rb->data_pages[i] = perf_mmap_alloc_page(cpu); > + rb->data_pages[i] = perf_mmap_alloc_page(node); > if (!rb->data_pages[i]) > goto fail_data_pages; > }