From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 209E243EDA; Mon, 22 Apr 2024 15:23:54 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 956CE40265; Mon, 22 Apr 2024 15:23:53 +0200 (CEST) Received: from CNSHPPMGWESA01.NOKIA-SBELL.COM (unknown [116.246.26.71]) by mails.dpdk.org (Postfix) with ESMTP id 6F8F84021F for ; Mon, 22 Apr 2024 15:23:52 +0200 (CEST) X-CSE-ConnectionGUID: uzp5+Jc5SPW+CY4Pyhk8YQ== X-CSE-MsgGUID: XnIlsiLYTvy3roLLXFD7LQ== X-IronPort-AV: E=Sophos;i="6.07,220,1708358400"; d="scan'208,217,223";a="26699770" Received: from unknown (HELO CNSHPPEXCH1609.nsn-intra.net) ([135.251.51.109]) by CNSHPPMGWESA01.NOKIA-SBELL.COM with ESMTP; 22 Apr 2024 21:23:50 +0800 Received: from CNSHPPEXCH1605.nsn-intra.net (135.251.51.105) by CNSHPPEXCH1609.nsn-intra.net (135.251.51.109) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.37; Mon, 22 Apr 2024 21:23:50 +0800 Received: from CNSHPPEXCH1605.nsn-intra.net ([135.251.51.105]) by CNSHPPEXCH1605.nsn-intra.net ([135.251.51.105]) with mapi id 15.01.2507.035; Mon, 22 Apr 2024 21:23:50 +0800 From: "Jianyue Wu (NSB)" To: "roretzla@linux.microsoft.com" , "thomas@monjalon.net" , "david.marchand@redhat.com" CC: "'dev@dpdk.org'" Subject: [PATCH] eal/linux: enhanced error handling for affinity Thread-Topic: [PATCH] eal/linux: enhanced error handling for affinity Thread-Index: AQHalLhQxrpyXKy/B0qhqFMATVnoyw== Date: Mon, 22 Apr 2024 13:23:50 +0000 Message-ID: References: <6edc5c20ca9e4bc5822bcf3f87cab66c@nokia-sbell.com> <930beb572a814989b86186c55fa574be@nokia-sbell.com> In-Reply-To: <930beb572a814989b86186c55fa574be@nokia-sbell.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: yes X-MS-TNEF-Correlator: x-originating-ip: [135.251.51.115] Content-Type: multipart/mixed; boundary="_004_fa21c475248e4a42850697eb76b0de50nokiasbellcom_" MIME-Version: 1.0 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org --_004_fa21c475248e4a42850697eb76b0de50nokiasbellcom_ Content-Type: multipart/alternative; boundary="_000_fa21c475248e4a42850697eb76b0de50nokiasbellcom_" --_000_fa21c475248e4a42850697eb76b0de50nokiasbellcom_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hello, Good day~ I hope this message finds you well. I am writing to submit a patch for cons= ideration, which primarily adds enhanced error handling for affinity sets w= ithin the eal/linux of DPDK. Unfortunately, my current environment does not= support git send-email, so I am sending this patch attached to this email. Thank you~ Best regards, Dave --_000_fa21c475248e4a42850697eb76b0de50nokiasbellcom_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hel= lo,

 

Goo= d day~

I h= ope this message finds you well. I am writing to submit a patch for conside= ration, which primarily adds enhanced error handling for affinity sets with= in the eal/linux of DPDK. Unfortunately, my current environment does not support git send-email, so I am sending th= is patch attached to this email.

 

Thank you~

Best regards,

Dave

 

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X-MS-Exchange-CrossTenant-AuthSource: CH1PEPF0000AD81.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB5913 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org From: Jianyue Wu Improve the robustness of setting thread affinity in DPDK by adding detailed error logging. Changes: 1. Set `errno` to 0 before calling `pthread_setaffinity_np()` to ensure clean error status. 2. Check the return value of `pthread_setaffinity_np()` and log an error if the call fails. 3. Include the current thread name, the intended CPU set, and a detailed error message in the log. Sample prints: EAL: Cannot set affinity for thread dpdk-test with cpus 0, ret: 22, errno: 0, error description: Success EAL: Cannot set affinity for thread dpdk-worker1 with cpus 1, ret: 22, errno: 0, error description: Success Signed-off-by: Jianyue Wu --- .mailmap | 1 + lib/eal/unix/rte_thread.c | 51 +++++++++++++++++++++++++++++++++++++-- 2 files changed, 50 insertions(+), 2 deletions(-) diff --git a/.mailmap b/.mailmap index 3843868716bd..66cff91f30a9 100644 --- a/.mailmap +++ b/.mailmap @@ -639,6 +639,7 @@ Jianfeng Tan Jiangu Zhao Jianwei Ma Jianwei Mei +Jianyue Wu Jiaqi Min Jiawei Wang Jiawei Zhu diff --git a/lib/eal/unix/rte_thread.c b/lib/eal/unix/rte_thread.c index 1b4c73f58e91..56bc7995eb5f 100644 --- a/lib/eal/unix/rte_thread.c +++ b/lib/eal/unix/rte_thread.c @@ -5,6 +5,7 @@ #include #include +#include #include #include #include @@ -114,6 +115,35 @@ thread_start_wrapper(void *arg) return (void *)(uintptr_t)thread_func(thread_args); } +/* Function to convert cpu_set_t to a string. */ +static void cpuset_to_string(const cpu_set_t *cpuset, + char *cpus_str, size_t cpus_str_size) { + int cpu; + // Track the current position in the string + size_t offset = 0; + + // Clear the string buffer + memset(cpus_str, 0, cpus_str_size); + cpus_str_size = RTE_MAX_LCORE < cpus_str_size ? + RTE_MAX_LCORE : cpus_str_size; + + // Iterate over each CPU core, and check if it is included in the set + for (cpu = 0; cpu < RTE_MAX_LCORE && offset < cpus_str_size - 1; ++cpu) { + if (CPU_ISSET(cpu, cpuset)) { + // Append the current CPU number to the string + int written = snprintf(cpus_str + offset, cpus_str_size - offset, + "%s%d", (offset > 0 ? "," : ""), cpu); + if (written > 0) + offset += written; + if (offset >= cpus_str_size - 1) + break; + } + } + + // Ensure the string is properly terminated + cpus_str[cpus_str_size - 1] = '\0'; +} + int rte_thread_create(rte_thread_t *thread_id, const rte_thread_attr_t *thread_attr, @@ -369,8 +399,25 @@ int rte_thread_set_affinity_by_id(rte_thread_t thread_id, const rte_cpuset_t *cpuset) { - return pthread_setaffinity_np((pthread_t)thread_id.opaque_id, - sizeof(*cpuset), cpuset); + int ret; + char cpus_str[RTE_MAX_LCORE + 1] = {'\0'}; + char thread_name[RTE_MAX_THREAD_NAME_LEN] = {'\0'}; + + errno = 0; + ret = pthread_setaffinity_np((pthread_t)thread_id.opaque_id, + sizeof(*cpuset), cpuset); + if (ret != 0) { + if (pthread_getname_np((pthread_t)thread_id.opaque_id, + thread_name, sizeof(thread_name)) != 0) + EAL_LOG(ERR, "pthread_getname_np failed!"); + cpuset_to_string(cpuset, cpus_str, sizeof(cpus_str)); + EAL_LOG(ERR, "Cannot set affinity for thread %s with cpus %s, " + "ret: %d, errno: %d, error description: %s", + thread_name, cpus_str, + ret, errno, strerror(errno)); 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I am writing to submit a patch for > consideration, which primarily adds enhanced error handling for affinity > sets within the eal/linux of DPDK. Unfortunately, my current environment > does not support git send-email, so I am sending this patch attached to > this email. > Thanks Dave, I sent the patch for you, you can follow the CI test results from patchwork link: https://patchwork.dpdk.org/project/dpdk/patch/20240422134917.3740545-1-ferruh.yigit@amd.com/ From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 4B55D43EDB; Mon, 22 Apr 2024 17:26:48 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 34BB540DCE; Mon, 22 Apr 2024 17:26:48 +0200 (CEST) Received: from mail-pl1-f173.google.com (mail-pl1-f173.google.com [209.85.214.173]) by mails.dpdk.org (Postfix) with ESMTP id A8A1340268 for ; Mon, 22 Apr 2024 17:26:30 +0200 (CEST) Received: by mail-pl1-f173.google.com with SMTP id d9443c01a7336-1e2bbc2048eso37713365ad.3 for ; Mon, 22 Apr 2024 08:26:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20230601.gappssmtp.com; s=20230601; t=1713799590; x=1714404390; darn=dpdk.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:from:to:cc:subject:date :message-id:reply-to; bh=6otg2lCRSoht947lSx6joeI6+mkWrUkTl2PThojZ9cw=; b=ft8z/WlDBxVVKmmQ7T/B0ervUpCc+9y5UNkeBZHUQfn8gT7TKlRvZ4snT0X8DMqYTI a63p0dIX/5p+gUviBhyupPoc+uWNRpkeyT1qL0X4DZPi3vGdA3ZctknCLlQJufhS8Mjs kYKvcWR8HlYCoaiHcB+jNlRXHhujHXieXex26IgLxNZrZ+SjmeoUzZYNK7rCblRDA2nh JZGR4o7vH80Ox5Z19gh1DOtFdqSr9DOc4QaJp8PHYdm1hG50rtJR+y0Hj0Y7OlNn8BLI BrZBoeXroq1wslUI0u5Tm3krco43ZLoTte0FmfOnWdoYpQulLYu3wyTu2yrI7J/XM9U5 1sow== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1713799590; x=1714404390; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=6otg2lCRSoht947lSx6joeI6+mkWrUkTl2PThojZ9cw=; b=OuWA4PDL1knHwyxrmSSo635FJtYh/LFxdN2+k3hJWxBJ8SQeVnFlxWrpcYR6Tg7gp3 kF3QcqRhFnjPgsHLwSWMKGj4ulOHNjaaa+WSzPgReHlPNC1I1tZ7eFATl7fVFiDYyG4T ItxsLqyFN1goNfPHw9ATbYyrceuWD5duW+RH2Q25u2WFQfTctPcCbdS13e00UgW2pdzd zWnBTuxoRcD8ytLFKItbof6KImWc1fGwUK77LcExJUuTqYsipv6KbHWMYqAzxB9a3WxT f+ei8f5IZ38Rj3KWzAnwkNMRwTzmBfFZSkacFV4Z2AzCW8NuuPL0VWpTeYxAp+JxxgiR +uAg== X-Forwarded-Encrypted: i=1; AJvYcCWEemwsVw8Gk6JfdX+1cM4yX8bctMJAEVuhhh7FtxWuAQvbfGAL1mUjz3FOdAIfjACCfe4sXlGNO/jF4uU= X-Gm-Message-State: AOJu0Yw5uUPa7UyYhgbLrCUtVFdewb/OJ5AkhQc+RIvyH8ju3Y3LlCGl 2dD6M3G3bPFZAwqu3ADL5tEJtq0YqrxZlgMvzXoNd9FmpWZDmiO7e1yRHx7Z5bU= X-Google-Smtp-Source: AGHT+IER70xXxNX3Yk7dAscjFcQs66gkPX7D75cw1kBmmzc0yKW6nuk0voc/qGrFXWtAI71CjeWnkA== X-Received: by 2002:a17:902:e889:b0:1e5:3684:617e with SMTP id w9-20020a170902e88900b001e53684617emr12782952plg.52.1713799589793; Mon, 22 Apr 2024 08:26:29 -0700 (PDT) Received: from hermes.local (204-195-96-226.wavecable.com. [204.195.96.226]) by smtp.gmail.com with ESMTPSA id n6-20020a170903110600b001e668c1060bsm8232125plh.122.2024.04.22.08.26.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Apr 2024 08:26:29 -0700 (PDT) Date: Mon, 22 Apr 2024 08:26:27 -0700 From: Stephen Hemminger To: "Jianyue Wu (NSB)" Cc: "roretzla@linux.microsoft.com" , "thomas@monjalon.net" , "david.marchand@redhat.com" , "'dev@dpdk.org'" Subject: Re: [PATCH] eal/linux: enhanced error handling for affinity Message-ID: <20240422082627.4b3a14e4@hermes.local> In-Reply-To: References: <6edc5c20ca9e4bc5822bcf3f87cab66c@nokia-sbell.com> <930beb572a814989b86186c55fa574be@nokia-sbell.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org On Mon, 22 Apr 2024 13:23:50 +0000 "Jianyue Wu (NSB)" wrote: > +/* Function to convert cpu_set_t to a string. */ > +static void cpuset_to_string(const cpu_set_t *cpuset, > + char *cpus_str, size_t cpus_str_size) { > + int cpu; > + // Track the current position in the string DPDK does not use C++ style comments. All patches should match the style of existing code. 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[204.195.96.226]) by smtp.gmail.com with ESMTPSA id lo8-20020a170903434800b001e546a10c50sm8225609plb.286.2024.04.22.08.27.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Apr 2024 08:27:32 -0700 (PDT) Date: Mon, 22 Apr 2024 08:27:31 -0700 From: Stephen Hemminger To: "Jianyue Wu (NSB)" Cc: "roretzla@linux.microsoft.com" , "thomas@monjalon.net" , "david.marchand@redhat.com" , "'dev@dpdk.org'" Subject: Re: [PATCH] eal/linux: enhanced error handling for affinity Message-ID: <20240422082731.3aec5126@hermes.local> In-Reply-To: References: <6edc5c20ca9e4bc5822bcf3f87cab66c@nokia-sbell.com> <930beb572a814989b86186c55fa574be@nokia-sbell.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org On Mon, 22 Apr 2024 13:23:50 +0000 "Jianyue Wu (NSB)" wrote: > + char cpus_str[RTE_MAX_LCORE + 1] = {'\0'}; > + char thread_name[RTE_MAX_THREAD_NAME_LEN] = {'\0'}; > + You don't need '\0' here, just doing { } will have same effect. 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[204.195.96.226]) by smtp.gmail.com with ESMTPSA id w16-20020a170902e89000b001e8ab6b927asm7029275plg.39.2024.04.22.08.30.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Apr 2024 08:30:48 -0700 (PDT) Date: Mon, 22 Apr 2024 08:30:46 -0700 From: Stephen Hemminger To: "Jianyue Wu (NSB)" Cc: "roretzla@linux.microsoft.com" , "thomas@monjalon.net" , "david.marchand@redhat.com" , "'dev@dpdk.org'" Subject: Re: [PATCH] eal/linux: enhanced error handling for affinity Message-ID: <20240422083046.2ffe5087@hermes.local> In-Reply-To: References: <6edc5c20ca9e4bc5822bcf3f87cab66c@nokia-sbell.com> <930beb572a814989b86186c55fa574be@nokia-sbell.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org On Mon, 22 Apr 2024 13:23:50 +0000 "Jianyue Wu (NSB)" wrote: > + EAL_LOG(ERR, "Cannot set affinity for thread %s with cpus %s, " > + "ret: %d, errno: %d, error description: %s", > + thread_name, cpus_str, > + ret, errno, strerror(errno)); > + } That error message is way too long, and error strings should not be broken across lines. "Set affinity thread %s to %s failed: %s" And it is a lot effort to deduce the cpuset and thread name here. Probably better to just move the error message back to the caller. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 658E243EE3; Tue, 23 Apr 2024 05:01:54 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id DF8FE402AB; Tue, 23 Apr 2024 05:01:53 +0200 (CEST) Received: from CNSHPPMGWESA01.NOKIA-SBELL.COM (unknown [116.246.26.71]) by mails.dpdk.org (Postfix) with ESMTP id 7580740269 for ; Tue, 23 Apr 2024 05:01:51 +0200 (CEST) X-CSE-ConnectionGUID: lpv1V+o4S0+YrvyTucsffQ== X-CSE-MsgGUID: 2B7F4dA1RIag8o6UPhAv6Q== X-IronPort-AV: E=Sophos;i="6.07,222,1708358400"; d="scan'208,217";a="26720764" Received: from unknown (HELO CNSHPPEXCH1602.nsn-intra.net) ([135.251.51.102]) by CNSHPPMGWESA01.NOKIA-SBELL.COM with ESMTP; 23 Apr 2024 11:01:34 +0800 Received: from CNSHPPEXCH1605.nsn-intra.net (135.251.51.105) by CNSHPPEXCH1602.nsn-intra.net (135.251.51.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Tue, 23 Apr 2024 11:01:34 +0800 Received: from CNSHPPEXCH1605.nsn-intra.net ([135.251.51.105]) by CNSHPPEXCH1605.nsn-intra.net ([135.251.51.105]) with mapi id 15.01.2507.035; Tue, 23 Apr 2024 11:01:34 +0800 From: "Jianyue Wu (NSB)" To: "roretzla@linux.microsoft.com" , "thomas@monjalon.net" , "david.marchand@redhat.com" CC: "'dev@dpdk.org'" Subject: RE: [PATCH] eal/linux: enhanced error handling for affinity Thread-Topic: [PATCH] eal/linux: enhanced error handling for affinity Thread-Index: AQHalLhQxrpyXKy/B0qhqFMATVnoy7F0pYqw Date: Tue, 23 Apr 2024 03:01:34 +0000 Message-ID: References: <6edc5c20ca9e4bc5822bcf3f87cab66c@nokia-sbell.com> <930beb572a814989b86186c55fa574be@nokia-sbell.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [135.251.51.115] Content-Type: multipart/alternative; boundary="_000_eab1693f54b64060af6d15e9eb5ef87bnokiasbellcom_" MIME-Version: 1.0 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org --_000_eab1693f54b64060af6d15e9eb5ef87bnokiasbellcom_ Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 SGVsbG8sDQoNClBsZWFzZSBkaXNyZWdhcmQgdGhpcyBlbWFpbDsgSSB3aWxsIHVzZSBhIGRpZmZl cmVudCBtYWlsYm94IGluc3RlYWQuDQoNClRoYW5rIHlvdX4NCkJlc3QgcmVnYXJkcywNCkRhdmUN Cg0KRnJvbTogSmlhbnl1ZSBXdSAoTlNCKQ0KU2VudDogMjAyNMTqNNTCMjLI1SAyMToyNA0KVG86 ICdyb3JldHpsYUBsaW51eC5taWNyb3NvZnQuY29tJyA8cm9yZXR6bGFAbGludXgubWljcm9zb2Z0 LmNvbT47ICd0aG9tYXNAbW9uamFsb24ubmV0JyA8dGhvbWFzQG1vbmphbG9uLm5ldD47ICdkYXZp ZC5tYXJjaGFuZEByZWRoYXQuY29tJyA8ZGF2aWQubWFyY2hhbmRAcmVkaGF0LmNvbT4NCkNjOiAn ZGV2QGRwZGsub3JnJyA8ZGV2QGRwZGsub3JnPg0KU3ViamVjdDogW1BBVENIXSBlYWwvbGludXg6 IGVuaGFuY2VkIGVycm9yIGhhbmRsaW5nIGZvciBhZmZpbml0eQ0KDQpIZWxsbywNCg0KR29vZCBk YXl+DQpJIGhvcGUgdGhpcyBtZXNzYWdlIGZpbmRzIHlvdSB3ZWxsLiBJIGFtIHdyaXRpbmcgdG8g c3VibWl0IGEgcGF0Y2ggZm9yIGNvbnNpZGVyYXRpb24sIHdoaWNoIHByaW1hcmlseSBhZGRzIGVu aGFuY2VkIGVycm9yIGhhbmRsaW5nIGZvciBhZmZpbml0eSBzZXRzIHdpdGhpbiB0aGUgZWFsL2xp bnV4IG9mIERQREsuIFVuZm9ydHVuYXRlbHksIG15IGN1cnJlbnQgZW52aXJvbm1lbnQgZG9lcyBu b3Qgc3VwcG9ydCBnaXQgc2VuZC1lbWFpbCwgc28gSSBhbSBzZW5kaW5nIHRoaXMgcGF0Y2ggYXR0 YWNoZWQgdG8gdGhpcyBlbWFpbC4NCg0KVGhhbmsgeW91fg0KQmVzdCByZWdhcmRzLA0KRGF2ZQ0K DQo= --_000_eab1693f54b64060af6d15e9eb5ef87bnokiasbellcom_ Content-Type: text/html; charset="gb2312" Content-Transfer-Encoding: quoted-printable

Hel= lo,

 

Ple= ase disregard this email; I will use a different mailbox instead.

 

Thank you~

Best regards,

Dave

 

From: Jianyue Wu (NSB)
Sent: 2024=C4=EA4= =D4=C222=C8=D5 21:24
To: 'roretzla@linux.microsoft.com' <roretzla@linux.microsoft.com&= gt;; 'thomas@monjalon.net' <thomas@monjalon.net>; 'david.marchand@red= hat.com' <david.marchand@redhat.com>
Cc: 'dev@dpdk.org' <dev@dpdk.org>
Subject: [PATCH] eal/linux: enhanced error handling for affinity

 

Hello,

 

Good day~

I hope this message finds you well. I am writing to submit a pa= tch for consideration, which primarily adds enhanced error handling for aff= inity sets within the eal/linux of DPDK. Unfortunately, my current environment does not support git send-email, so = I am sending this patch attached to this email.

 

Thank= you~

Best = regards,

Dave<= o:p>

 

--_000_eab1693f54b64060af6d15e9eb5ef87bnokiasbellcom_-- From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 9889143EF7; Wed, 24 Apr 2024 16:18:27 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 6E81D434FA; Wed, 24 Apr 2024 16:18:27 +0200 (CEST) Received: from m16.mail.163.com (m16.mail.163.com [117.135.210.3]) by mails.dpdk.org (Postfix) with ESMTP id 3EC9F40269 for ; Tue, 23 Apr 2024 05:02:51 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:Subject:Date:Message-Id:MIME-Version; bh=cEQiN xSsjbWYWzUiprQnnfeZdHUZaKTqvK7M6V4nS08=; b=cKINuEuNTaJI67WZCaaZc Re0ls03fPFKRNda0tb/XJlQsNgarxfzTPB5Lpx8D9jlGNLiSxCD3a7G7lGcPfOxN 7XvnuVaYQkhFFNTG9kdxDB4nwY5k0SHFsJrU81LqUNrfOedHpUOhqA9SE2mtaeta if0W4+Gtf8e1VpCiQskOoU= Received: from ubuntu2204.. (unknown [36.24.144.104]) by gzga-smtp-mta-g1-5 (Coremail) with SMTP id _____wD3XxvWJCdm6yU5CA--.8084S2; Tue, 23 Apr 2024 11:02:46 +0800 (CST) From: Jianyue Wu To: Cc: dev@dpdk.org, Jianyue Wu Subject: [PATCH] eal/linux: enhanced error handling for affinity Date: Tue, 23 Apr 2024 11:02:43 +0800 Message-Id: <20240423030243.59895-1-wujianyue000@163.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID: _____wD3XxvWJCdm6yU5CA--.8084S2 X-Coremail-Antispam: 1Uf129KBjvJXoW7WFW5ur47Gr1rKrW7Cr45ZFb_yoW8CF1DpF y0k3sFyrs5ArsFvw13t3W8JFyYyr4xXay7Jr97Aw1fA3y3Wa15Ary5KFy5Xr1rCr48W3s8 JrW7uFWq9r4DJaUanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x0pRqjgcUUUUU= X-Originating-IP: [36.24.144.104] X-CM-SenderInfo: 5zxmxtpq1xviiqq6il2tof0z/1tbisBfJemV4JBBHlgAAss X-Mailman-Approved-At: Wed, 24 Apr 2024 16:18:26 +0200 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Improve the robustness of setting thread affinity in DPDK by adding detailed error logging. Changes: 1. Check the return value of pthread_setaffinity_np() and log an error if the call fails. 2. Include the current thread name, the intended CPU set, and a detailed error message in the log. Sample prints: EAL: Cannot set affinity for thread dpdk-test with cpus 0, ret: 22, errno: 0, error description: Success EAL: Cannot set affinity for thread dpdk-worker1 with cpus 1, ret: 22, errno: 0, error description: Success Signed-off-by: Jianyue Wu --- lib/eal/unix/rte_thread.c | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-) diff --git a/lib/eal/unix/rte_thread.c b/lib/eal/unix/rte_thread.c index 1b4c73f58e..8f9eaf0dcf 100644 --- a/lib/eal/unix/rte_thread.c +++ b/lib/eal/unix/rte_thread.c @@ -369,8 +369,26 @@ int rte_thread_set_affinity_by_id(rte_thread_t thread_id, const rte_cpuset_t *cpuset) { - return pthread_setaffinity_np((pthread_t)thread_id.opaque_id, - sizeof(*cpuset), cpuset); + int ret; + char cpus_str[RTE_CPU_AFFINITY_STR_LEN] = {'\0'}; + char thread_name[RTE_MAX_THREAD_NAME_LEN] = {'\0'}; + + errno = 0; + ret = pthread_setaffinity_np((pthread_t)thread_id.opaque_id, + sizeof(*cpuset), cpuset); + if (ret != 0) { + if (pthread_getname_np((pthread_t)thread_id.opaque_id, + thread_name, sizeof(thread_name)) != 0) + EAL_LOG(ERR, "pthread_getname_np failed!"); + if (eal_thread_dump_affinity(cpuset, cpus_str, RTE_CPU_AFFINITY_STR_LEN) != 0) + EAL_LOG(ERR, "eal_thread_dump_affinity failed!"); + EAL_LOG(ERR, "Cannot set affinity for thread %s with cpus %s, " + "ret: %d, errno: %d, error description: %s", + thread_name, cpus_str, + ret, errno, strerror(errno)); + } + + return ret; } int -- 2.34.1 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 435FB43EF7; Wed, 24 Apr 2024 17:50:26 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id BD13F4359C; Wed, 24 Apr 2024 17:50:25 +0200 (CEST) Received: from mail-pl1-f177.google.com (mail-pl1-f177.google.com [209.85.214.177]) by mails.dpdk.org (Postfix) with ESMTP id 8B0F0402D1 for ; Wed, 24 Apr 2024 17:50:24 +0200 (CEST) Received: by mail-pl1-f177.google.com with SMTP id d9443c01a7336-1e65b29f703so55257905ad.3 for ; Wed, 24 Apr 2024 08:50:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20230601.gappssmtp.com; s=20230601; t=1713973823; x=1714578623; darn=dpdk.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:from:to:cc:subject:date :message-id:reply-to; bh=PqjtUD2BK+Erz0SpNH0Bu6RR5HZs8hZE+Lfx+65Bw2I=; b=IB8vaoM8/CIvMo4H4LomyFMuQDE5LB8gxyerACR4f47m86GPrRmwx53e33llIyQE1A /i9uohd8oqfL2B0ReKVRUm88lL1zGQ5aTy1IhLUSt5/E4gUbju6e4grBvXIyjWKfaKqR 6/XLqMbc6bOpwaDxaeBw0/WmIYuK9tWCwyfyyHXx77/jlToSKtOPmNoC1ycTADqmiiQL /xHrZ5O5DiVSIQ+/rlvz0CbnHotZvZun8dXdZPWe5TB5OlBqoxQugEkeWUkvV3ovT75h GWRio3sanH12ud04qanEebgzWXOvj9Y36tkmAS5mTGwNRnIOVaUEqfPFlRk3ZDwmms3F HkZQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1713973823; x=1714578623; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=PqjtUD2BK+Erz0SpNH0Bu6RR5HZs8hZE+Lfx+65Bw2I=; b=xQ21AaqX65pko+5duLZeaD/gEsniY7poQs+wF5wfJDQ2HeDMo0cil5JDkQ767isGpb ElsxDUgTn0jo/ARsOp5FlWzZJFqLuVSGqYdEKws2PyMfgFoslZB+ryvF4NcC2VTqUub3 IWkq/RFhZI5NGt3IZBZQb7wWY+FkttdliVBXPvBAwFqwqXE/g1g1lW5Q9wm5TScEjCEN n8u9+jewg3WGBqdn9VK4USNKCedvYbjALTmG8UvO6WM7fhoUSzJQDeYg17usAdBdGhb2 gBI8+XZMp6Yc+9j7qVZsleDl4b9OdJFYJfUnxuO6c87ASC91H12rQ8mZTg+3+HXi8oe/ WaPw== X-Gm-Message-State: AOJu0YxWYdf0cR4KTJkTWP9tfjbpEKj9hXIOnMIIbhqzXIbD6cChuLm4 CvyKGKuVelANWR7f8D/B9hzWegPiRTRaDJYyWFEh6RFfmqwMvJMJe7uxbV8s7fvtumVul8eUPO+ R X-Google-Smtp-Source: AGHT+IHQk7piTi0PircP0Vp1zuHFe4u5ZI9Hicktae3SAjjvA+blBPU2EkSSoRRNAn1NBc+vqpbwpA== X-Received: by 2002:a17:902:ce8f:b0:1e4:ccf6:209f with SMTP id f15-20020a170902ce8f00b001e4ccf6209fmr3425192plg.28.1713973823567; Wed, 24 Apr 2024 08:50:23 -0700 (PDT) Received: from hermes.local (204-195-96-226.wavecable.com. [204.195.96.226]) by smtp.gmail.com with ESMTPSA id a13-20020a170902b58d00b001e0942da6c7sm12012458pls.284.2024.04.24.08.50.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 24 Apr 2024 08:50:23 -0700 (PDT) Date: Wed, 24 Apr 2024 08:50:21 -0700 From: Stephen Hemminger To: Jianyue Wu Cc: dev@dpdk.org Subject: Re: [PATCH] eal/linux: enhanced error handling for affinity Message-ID: <20240424085021.11f2ff96@hermes.local> In-Reply-To: <20240423030243.59895-1-wujianyue000@163.com> References: <20240423030243.59895-1-wujianyue000@163.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org On Tue, 23 Apr 2024 11:02:43 +0800 Jianyue Wu wrote: > Improve the robustness of setting thread affinity in DPDK > by adding detailed error logging. Is this an error you saw in your application or something inside DPDK? > Changes: > 1. Check the return value of pthread_setaffinity_np() and log an error > if the call fails. Not sure this is necessary. The rte_thread functions are intended to be os independent wrapper for threads. Does it need to be this chatty. > 2. Include the current thread name, the intended CPU set, and a detailed > error message in the log. This introduces a more code and ends up being Linux/BSD specific only for the case where application did something wrong. 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[204.195.96.226]) by smtp.gmail.com with ESMTPSA id jb11-20020a170903258b00b001e249903b0fsm13887100plb.256.2024.04.25.08.04.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 25 Apr 2024 08:04:48 -0700 (PDT) Date: Thu, 25 Apr 2024 08:04:46 -0700 From: Stephen Hemminger To: =?UTF-8?B?5ZC05YmR6LeD?= Cc: "dev@dpdk.org" Subject: Re: [PATCH] eal/linux: enhanced error handling for affinity Message-ID: <20240425080446.4443fe24@hermes.local> In-Reply-To: <5def5f15.73a1.18f13c4e490.Coremail.wujianyue000@163.com> References: <20240423030243.59895-1-wujianyue000@163.com> <20240424085021.11f2ff96@hermes.local> <3e9a9498.1535.18f12cc71dd.Coremail.wujianyue000@163.com> <5def5f15.73a1.18f13c4e490.Coremail.wujianyue000@163.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org On Thu, 25 Apr 2024 13:40:21 +0800 (CST) =E5=90=B4=E5=89=91=E8=B7=83 wrote: > After reviewing the code, I believe that the combination of the __linux__= and _GNU_SOURCE macros effectively confirms whether the pthread_getname_np= () API can be utilized. I will proceed with adding them. Thank you~ > #if defined(__linux__) && defined(_GNU_SOURCE) >=20 >=20 > =E5=9C=A8 2024-04-25 09:08:59=EF=BC=8C"=E5=90=B4=E5=89=91=E8=B7=83" =E5=86=99=E9=81=93=EF=BC=9A >=20 > Hello, Stephen, >=20 >=20 >=20 > Good day > The issue is not caused by DPDK itself, but arises when the DPDK worker p= rocess attempts to set affinity to a cpuset that exceeds the limits set by = the cgroup cpuset settings. > Original error prints are: > PANIC in rte_eal_init(): > Cannot set affinity > # Callstacks. >=20 >=20 > Finding the detailed reason for the failure was challenging, so I added e= xtra print statements to help diagnose the issue. > I understand your concern about maintaining OS independence with the rte_= thread functions. This change aims to provide more context when errors occu= r, facilitating quicker troubleshooting. I agree that this introduces more = code and could be seen as platform-specific. Perhaps we could implement thi= s conditionally, only for platforms where such detailed logging is supporte= d and useful. >=20 My point is that just giving the kernel error should be sufficient, rather = than having to reformat the incoming arguments. The arguments are coming from the comma= nd line, and what I would do is look at the error and the command line arguments to the applica= tion, as well as any kernel logs. 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Fri, 26 Apr 2024 14:31:37 -0700 (PDT) MIME-Version: 1.0 References: <20240422134917.3740545-1-ferruh.yigit@amd.com> In-Reply-To: <20240422134917.3740545-1-ferruh.yigit@amd.com> From: Patrick Robb Date: Fri, 26 Apr 2024 17:31:27 -0400 Message-ID: Subject: Re: [PATCH] eal/linux: enhanced error handling for affinity To: Ferruh Yigit Cc: Thomas Monjalon , dev@dpdk.org, David Marchand , roretzla@linux.microsoft.com, Jianyue Wu Content-Type: multipart/alternative; boundary="000000000000f50881061706a017" X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org --000000000000f50881061706a017 Content-Type: text/plain; charset="UTF-8" Recheck-request: iol-compile-amd64-testing The DPDK Community Lab updated to the latest Alpine image yesterday, which resulted in all Alpine builds failing. The failure is unrelated to your patch, and this recheck should remove the fail on Patchwork, as we have disabled Alpine testing for now. --000000000000f50881061706a017 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Recheck-request:=C2=A0iol-compile-amd64-testing

The DPDK Community Lab updated to the latest Alpine= image yesterday, which resulted in all Alpine builds failing. The failure = is unrelated to your patch, and this recheck should remove the fail on Patc= hwork,=C2=A0as we have disabled Alpine testing for now.=C2=A0
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