From patchwork Tue Feb 13 05:55:52 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ankur Arora X-Patchwork-Id: 200226 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7300:bc8a:b0:106:860b:bbdd with SMTP id dn10csp349912dyb; Mon, 12 Feb 2024 22:05:30 -0800 (PST) X-Forwarded-Encrypted: i=3; AJvYcCUssGE80ja0KaEg8kZ+TfFB+8fxjCQx0hBisF0ohlFV+PLXLCcRZ2VUz6lXehgyMqewlvXeAWlEqb2H2AyUDU3rP3tvjQ== X-Google-Smtp-Source: AGHT+IGz7ncc53iLkSPNYtgC8nGVQbYrF8nq0WLtYXAFKpmW91mrhCa7MkAtIeGo47bNEmztGpbY X-Received: by 2002:a05:620a:2ae3:b0:785:db2d:d894 with SMTP id bn35-20020a05620a2ae300b00785db2dd894mr3055160qkb.35.1707804330405; Mon, 12 Feb 2024 22:05:30 -0800 (PST) X-Forwarded-Encrypted: i=3; AJvYcCV6gs56wymVmRlSQXSWYKBzSTpfPRPDhDy2aTyY8gx7VVEysGOHdJ4A241FDXgpKgFaSmRH4Zp1X30qBXJIor+vdv6kQA== Received: from ny.mirrors.kernel.org (ny.mirrors.kernel.org. [2604:1380:45d1:ec00::1]) by mx.google.com with ESMTPS id vu14-20020a05620a560e00b00783322de747si7701287qkn.339.2024.02.12.22.05.30 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 12 Feb 2024 22:05:30 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-62986-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) client-ip=2604:1380:45d1:ec00::1; Authentication-Results: mx.google.com; dkim=pass header.i=@oracle.com header.s=corp-2023-11-20 header.b=lY6q1Inl; dkim=pass header.i=@oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b=0GHqqeSx; arc=fail (signature failed); spf=pass (google.com: domain of linux-kernel+bounces-62986-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-62986-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=oracle.com Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ny.mirrors.kernel.org (Postfix) with ESMTPS id B5BC21C22F71 for ; Tue, 13 Feb 2024 06:05:13 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 82F3D524A2; Tue, 13 Feb 2024 05:58:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="lY6q1Inl"; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.b="0GHqqeSx" Received: from mx0b-00069f02.pphosted.com (mx0b-00069f02.pphosted.com [205.220.177.32]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3ACEA50A77 for ; Tue, 13 Feb 2024 05:58:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=205.220.177.32 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707803881; cv=fail; b=nvGPME5marCEh8Bp7yuKFravG/0pBiz3kM/t0KRtCqdyYZSgFXvO+jBNm3uPviJMbMhxj5ROcYycSmr0nMonS2wvX9iAlB2xNIG8QDUrd61bH0TorDe3VU3LUDb4o0ilEGS1e1KT+Dw9kCK2IMTUHAtvnhUWe9bseGUQgDbAoD8= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707803881; c=relaxed/simple; bh=HWMnr0IL3/+UnCwwU/rSW3D61iUcgJaEY3VB3Gw22UA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: Content-Type:MIME-Version; b=flCRZpkgy7Gq0/0yOLfyiyT5Jme6TAs34ppxWLy3StAlhCon2ld8aG5qF8/JFDLHfvLRbJhgmTTZjyvlojcVXZEXIU4BNo2N6Ue85i0s/LFJbHfoFJs0hSQ+W73ipHXFg1AGIjcvkRLcY+8iYdOcMOaKwoK7q3gVIuREguDVnYI= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=oracle.com; spf=pass smtp.mailfrom=oracle.com; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b=lY6q1Inl; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.b=0GHqqeSx; arc=fail smtp.client-ip=205.220.177.32 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=oracle.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oracle.com Received: from pps.filterd (m0333520.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 41D5ng4d028881; Tue, 13 Feb 2024 05:57:05 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : content-transfer-encoding : content-type : mime-version; s=corp-2023-11-20; bh=2ISIDIE+DWdtLOJcbwLdBeVJe6nQP559F6WAgS9bf2A=; b=lY6q1Inl3m5SZnA2NrDjUiHZw9YdBlBPAKIDo1E3Op3xWlAjhK3zbp5iQtE7ghKNe7Dr JGzyabCKvdSD2995DcT6LZG81s8+UhxRYNGoFrtXvIdxQ52B7keeVvF0SXCKyi9Y7mCH WDNSFwPGsqxm2iDDIJVbSUNdqM+AfzWGWfuDnnrdaG2STibOIMJAoDMMHu4ZmsXsa01T rSGfcirJYkm/9fXUFfdrEmiYSVRpBeNu2SB/fbf4rFRBue+QK23htK24G6jy5ovodCxG WlsuLN0NKzT7BP/nUiVR252VuCsKWOcVwbhsINT6B3x+rVMUE0StjyagOntiFRNAmhhw VA== Received: from phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta01.appoci.oracle.com [138.1.114.2]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3w82m480kx-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 13 Feb 2024 05:57:05 +0000 Received: from pps.filterd (phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (8.17.1.19/8.17.1.19) with ESMTP id 41D4QMOQ015080; Tue, 13 Feb 2024 05:57:04 GMT Received: from nam10-dm6-obe.outbound.protection.outlook.com (mail-dm6nam10lp2100.outbound.protection.outlook.com [104.47.58.100]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 3w5yk6uh6d-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 13 Feb 2024 05:57:04 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=hYdRrHnuD4POoNXv4xnBuftpInZJqvHTotsdjI6pkPNHBUbJUgO1UUvjDsNWkH45Ij5hapX8lt1awpBwRF52lNErL0DtsBnzZq/pGTXqBWVBIYU/KbZB3KaaCKRXZbm2RBM3GszVS+qMRXmn9anJjw7U4UieMptaHySnmhLMIA7e4URSDT3npPCKjpyxlNg6CKQ6J6MQyYQQEVguE96j8gvnc/vKMtmrRQQB1oRZJvNgMwBud8+sFafZIiyVVhWnRpfmKZ21Ar1fZtFYfxfa6fvRtHt+HlYzeiiTPt+Ra94VNWSx93Eo4LJ1yaMy62JDMj3K1z3P3PLnEKw1ybtWtw== 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=2ISIDIE+DWdtLOJcbwLdBeVJe6nQP559F6WAgS9bf2A=; b=Ifr+Lr7j3BmjX/NF2m+UTa2JBOq83+2fdxAj01O8bT9cmK8tQbRGrQ0p08dC7Kw6m24Pc8oYYH0BEuSELNRv2mtp5TpMzCce0MG0KaEeMQ2yP/Rf+7qdRuL1HuTTvNHdHFDVnboAFfT2OilTs8yaKayGMygr4xpGXQe7/Z3zflfBagskYEhDPirBdF/h0DP7jM1DjA2dkBXXFCSJLu0ycbWGt1/ol0RiiKUYfQxSZEAjk0fcqATf1Po17SIYunLDWGzAH4a7z4Hlb+EkB9vtldU5oky9ow/Yb1rjxBrN5k48EZwRNU2+3+yaJlF2hm21A5ZE/cLxfiqtmVMvAuZ/1A== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oracle.com; dmarc=pass action=none header.from=oracle.com; dkim=pass header.d=oracle.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.onmicrosoft.com; s=selector2-oracle-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=2ISIDIE+DWdtLOJcbwLdBeVJe6nQP559F6WAgS9bf2A=; b=0GHqqeSx476Pc/dEUK41si3+GqSe+UcWRlN24VQ/BD1SAyjow+qrNKUM4Bjjexe1QUpO9P7faSkVNfZH9FQQF0pDRZbdgEJE7tyLctqn/lWJyceSFOYQNvH6JbgknCc05xmlNsc3Q2t/nYpcMUKBtzhbcixYp4ArTneJSiTf7kk= Received: from CO6PR10MB5409.namprd10.prod.outlook.com (2603:10b6:5:357::14) by CY8PR10MB6906.namprd10.prod.outlook.com (2603:10b6:930:85::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7270.39; Tue, 13 Feb 2024 05:57:01 +0000 Received: from CO6PR10MB5409.namprd10.prod.outlook.com ([fe80::91b3:fd53:a6ee:8685]) by CO6PR10MB5409.namprd10.prod.outlook.com ([fe80::91b3:fd53:a6ee:8685%4]) with mapi id 15.20.7270.036; Tue, 13 Feb 2024 05:57:01 +0000 From: Ankur Arora To: linux-kernel@vger.kernel.org Cc: tglx@linutronix.de, peterz@infradead.org, torvalds@linux-foundation.org, paulmck@kernel.org, akpm@linux-foundation.org, luto@kernel.org, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, mingo@redhat.com, juri.lelli@redhat.com, vincent.guittot@linaro.org, willy@infradead.org, mgorman@suse.de, jpoimboe@kernel.org, mark.rutland@arm.com, jgross@suse.com, andrew.cooper3@citrix.com, bristot@kernel.org, mathieu.desnoyers@efficios.com, geert@linux-m68k.org, glaubitz@physik.fu-berlin.de, anton.ivanov@cambridgegreys.com, mattst88@gmail.com, krypton@ulrich-teichert.org, rostedt@goodmis.org, David.Laight@ACULAB.COM, richard@nod.at, mjguzik@gmail.com, jon.grimm@amd.com, bharata@amd.com, raghavendra.kt@amd.com, boris.ostrovsky@oracle.com, konrad.wilk@oracle.com, Ankur Arora , Masami Hiramatsu Subject: [PATCH 28/30] tracing: support lazy resched Date: Mon, 12 Feb 2024 21:55:52 -0800 Message-Id: <20240213055554.1802415-29-ankur.a.arora@oracle.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20240213055554.1802415-1-ankur.a.arora@oracle.com> References: <20240213055554.1802415-1-ankur.a.arora@oracle.com> X-ClientProxiedBy: MW4PR03CA0165.namprd03.prod.outlook.com (2603:10b6:303:8d::20) To CO6PR10MB5409.namprd10.prod.outlook.com (2603:10b6:5:357::14) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO6PR10MB5409:EE_|CY8PR10MB6906:EE_ X-MS-Office365-Filtering-Correlation-Id: 828b5498-a7bc-47f0-5333-08dc2c58991b 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:CO6PR10MB5409.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(39860400002)(376002)(366004)(346002)(136003)(396003)(230922051799003)(1800799012)(64100799003)(451199024)(186009)(2906002)(5660300002)(66476007)(66556008)(66946007)(8936002)(8676002)(7416002)(7406005)(6916009)(4326008)(86362001)(41300700001)(1076003)(26005)(2616005)(36756003)(83380400001)(54906003)(6666004)(316002)(6506007)(6486002)(966005)(6512007)(103116003)(478600001)(38100700002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: 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 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: 828b5498-a7bc-47f0-5333-08dc2c58991b X-MS-Exchange-CrossTenant-AuthSource: CO6PR10MB5409.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Feb 2024 05:57:01.8305 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: KfkWEoOpRn+l9IyvJDd8MZvom6wQPYlSL2X1xcmZGbSBfhSbsHxa3JAzI38lR4fsa+o5/jdbj7ZbNFNHKDNIqDpho0FfmM7c/ha9t5XdPXQ= X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR10MB6906 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-13_02,2024-02-12_03,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 bulkscore=0 suspectscore=0 phishscore=0 adultscore=0 spamscore=0 mlxlogscore=999 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402130043 X-Proofpoint-GUID: yD1AjVAKFwJC5zOj-JdfyINs1mc27Kqd X-Proofpoint-ORIG-GUID: yD1AjVAKFwJC5zOj-JdfyINs1mc27Kqd X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1790762633120420000 X-GMAIL-MSGID: 1790762633120420000 Tracing support for TIF_NEED_RESCHED_LAZY. trace_entry::flags is full, so reuse the TRACE_FLAG_IRQS_NOSUPPORT bit for this. The flag is safe to reuse since it is only used in old archs that don't support lockdep irq tracing. Cc: Steven Rostedt Cc: Masami Hiramatsu Originally-by: Thomas Gleixner Link: https://lore.kernel.org/lkml/87jzshhexi.ffs@tglx/ Signed-off-by: Ankur Arora --- include/linux/trace_events.h | 6 +++--- kernel/trace/trace.c | 2 ++ kernel/trace/trace_output.c | 16 ++++++++++++++-- 3 files changed, 19 insertions(+), 5 deletions(-) diff --git a/include/linux/trace_events.h b/include/linux/trace_events.h index d68ff9b1247f..0c17e9de1434 100644 --- a/include/linux/trace_events.h +++ b/include/linux/trace_events.h @@ -178,7 +178,7 @@ unsigned int tracing_gen_ctx_irq_test(unsigned int irqs_status); enum trace_flag_type { TRACE_FLAG_IRQS_OFF = 0x01, - TRACE_FLAG_IRQS_NOSUPPORT = 0x02, + TRACE_FLAG_NEED_RESCHED_LAZY = 0x02, TRACE_FLAG_NEED_RESCHED = 0x04, TRACE_FLAG_HARDIRQ = 0x08, TRACE_FLAG_SOFTIRQ = 0x10, @@ -205,11 +205,11 @@ static inline unsigned int tracing_gen_ctx(void) static inline unsigned int tracing_gen_ctx_flags(unsigned long irqflags) { - return tracing_gen_ctx_irq_test(TRACE_FLAG_IRQS_NOSUPPORT); + return tracing_gen_ctx_irq_test(0); } static inline unsigned int tracing_gen_ctx(void) { - return tracing_gen_ctx_irq_test(TRACE_FLAG_IRQS_NOSUPPORT); + return tracing_gen_ctx_irq_test(0); } #endif diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 0a9642fba852..8fb3a79771df 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2703,6 +2703,8 @@ unsigned int tracing_gen_ctx_irq_test(unsigned int irqs_status) if (tif_need_resched(NR_now)) trace_flags |= TRACE_FLAG_NEED_RESCHED; + if (tif_need_resched(NR_lazy)) + trace_flags |= TRACE_FLAG_NEED_RESCHED_LAZY; if (test_preempt_need_resched()) trace_flags |= TRACE_FLAG_PREEMPT_RESCHED; return (trace_flags << 16) | (min_t(unsigned int, pc & 0xff, 0xf)) | diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c index 3e7fa44dc2b2..5e120c2404cf 100644 --- a/kernel/trace/trace_output.c +++ b/kernel/trace/trace_output.c @@ -460,17 +460,29 @@ int trace_print_lat_fmt(struct trace_seq *s, struct trace_entry *entry) (entry->flags & TRACE_FLAG_IRQS_OFF && bh_off) ? 'D' : (entry->flags & TRACE_FLAG_IRQS_OFF) ? 'd' : bh_off ? 'b' : - (entry->flags & TRACE_FLAG_IRQS_NOSUPPORT) ? 'X' : + !IS_ENABLED(CONFIG_TRACE_IRQFLAGS_SUPPORT) ? 'X' : '.'; - switch (entry->flags & (TRACE_FLAG_NEED_RESCHED | + switch (entry->flags & (TRACE_FLAG_NEED_RESCHED | TRACE_FLAG_NEED_RESCHED_LAZY | TRACE_FLAG_PREEMPT_RESCHED)) { + case TRACE_FLAG_NEED_RESCHED | TRACE_FLAG_NEED_RESCHED_LAZY | TRACE_FLAG_PREEMPT_RESCHED: + need_resched = 'B'; + break; case TRACE_FLAG_NEED_RESCHED | TRACE_FLAG_PREEMPT_RESCHED: need_resched = 'N'; break; + case TRACE_FLAG_NEED_RESCHED_LAZY | TRACE_FLAG_PREEMPT_RESCHED: + need_resched = 'L'; + break; + case TRACE_FLAG_NEED_RESCHED | TRACE_FLAG_NEED_RESCHED_LAZY: + need_resched = 'b'; + break; case TRACE_FLAG_NEED_RESCHED: need_resched = 'n'; break; + case TRACE_FLAG_NEED_RESCHED_LAZY: + need_resched = 'l'; + break; case TRACE_FLAG_PREEMPT_RESCHED: need_resched = 'p'; break;