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 X-Spam-Level: X-Spam-Status: No, score=-3.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 157FBC433DF for ; Sat, 11 Jul 2020 01:06:26 +0000 (UTC) Received: from shelob.surriel.com (shelob.surriel.com [96.67.55.147]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CA3872076A for ; Sat, 11 Jul 2020 01:06:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CA3872076A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=vt.edu Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernelnewbies-bounces@kernelnewbies.org Received: from localhost ([::1] helo=shelob.surriel.com) by shelob.surriel.com with esmtp (Exim 4.94) (envelope-from ) id 1ju3xO-0008DJ-8x; Fri, 10 Jul 2020 21:05:34 -0400 Received: from omr1.cc.ipv6.vt.edu ([2607:b400:92:8300:0:c6:2117:b0e] helo=omr1.cc.vt.edu) by shelob.surriel.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94) (envelope-from ) id 1ju3xL-0008DC-Ae for Kernelnewbies@kernelnewbies.org; Fri, 10 Jul 2020 21:05:31 -0400 Received: from mr2.cc.vt.edu (mr2.cc.ipv6.vt.edu [IPv6:2607:b400:92:8400:0:90:e077:bf22]) by omr1.cc.vt.edu (8.14.4/8.14.4) with ESMTP id 06B15T1J005551 for ; Fri, 10 Jul 2020 21:05:29 -0400 Received: from mail-qk1-f197.google.com (mail-qk1-f197.google.com [209.85.222.197]) by mr2.cc.vt.edu (8.14.7/8.14.7) with ESMTP id 06B15Ohk017133 for ; Fri, 10 Jul 2020 21:05:29 -0400 Received: by mail-qk1-f197.google.com with SMTP id f79so5685074qke.9 for ; Fri, 10 Jul 2020 18:05:29 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:in-reply-to:references :mime-version:content-transfer-encoding:date:message-id; bh=9yOfoOQOxdZaeO4Ih31zm2DhC6zxFYDUShARej5MwAY=; b=NZl1A3J1WZGEBoOMMfa3tfIISsRhUTYTh2XDo7CpgsolDCEGGrvFUhgIwTJdm44NDs C7poEO/qhS2Yi7gorPxzi6KIKs9VjSFXDPGb9nitJO3FYDHSFCBxuFeUq9xnshnRo+GQ WrnQ9R4KvCw57sOyqnirCvZdaAUKMeJAZy6GcHJPqKoWYuPeoGMjxMr9HVSfddoZ8kYQ Hd8LLDvaZin6VON4rcyRv2pyzCM1B+l2+eds9llic4hT5rY5iJpUAh4FLsvc56O8PbMc f0NlmGI9N6NCkiXBAH0eJshaudyJebU3CnCumyzaMQnem8w3SqIMLBnmeAwhdVWKTkYU ZIFg== X-Gm-Message-State: AOAM532fqT1NziIQJWXTReWAafmQA9dDbeeAUp8o8WXkHkPypEHmh0U6 1vFLC/nj5xBfqdzTMTYpigeReV+0WeBVgo3txlJ2lKo7jlW8lqgZuuJCdmDWOgHRV43sQcVMzQB bF79s/s1q+6y4pEi89JfOIT0jV57cCTfvcN69REI= X-Received: by 2002:a37:7682:: with SMTP id r124mr50607038qkc.43.1594429524134; Fri, 10 Jul 2020 18:05:24 -0700 (PDT) X-Google-Smtp-Source: ABdhPJw7TAmfq56NHhkWWGtHj8m8+6sWX4ju7ljsylfRcz7HH5vgcf3duOCdxt12CslKA/IocoClFA== X-Received: by 2002:a37:7682:: with SMTP id r124mr50607023qkc.43.1594429523816; Fri, 10 Jul 2020 18:05:23 -0700 (PDT) Received: from turing-police ([2601:5c0:c001:c9e1::359]) by smtp.gmail.com with ESMTPSA id i26sm10002662qkh.14.2020.07.10.18.05.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 10 Jul 2020 18:05:21 -0700 (PDT) From: "Valdis Kl=?utf-8?Q?=c4=93?=tnieks" X-Google-Original-From: "Valdis Kl=?utf-8?Q?=c4=93?=tnieks" X-Mailer: exmh version 2.9.0 11/07/2018 with nmh-1.7+dev To: "e- d8 i> sunshilong" Subject: Re: Why are there "" and "" in the call trace section? What does them imply? In-Reply-To: References: Mime-Version: 1.0 Date: Fri, 10 Jul 2020 21:05:20 -0400 Message-ID: <206158.1594429520@turing-police> Cc: kernelnewbies X-BeenThere: kernelnewbies@kernelnewbies.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Learn about the Linux kernel List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============5269617850418593173==" Errors-To: kernelnewbies-bounces@kernelnewbies.org --===============5269617850418593173== Content-Type: multipart/signed; boundary="==_Exmh_1594429520_174210P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit --==_Exmh_1594429520_174210P Content-Type: text/plain; charset=us-ascii On Fri, 10 Jul 2020 13:29:29 +0800, "e- d8 i> sunshilong" said: > [72873.713473] > [72873.713474] switch_mm_irqs_off+0x31b/0x4e0 > [72873.713475] xnarch_switch_to+0x2f/0x80 > [72873.713476] ___xnsched_run.part.74+0x154/0x480 > [72873.713476] ___xnsched_run+0x35/0x50 > [72873.713477] xnintr_irq_handler+0x346/0x4c0 > [72873.713478] ? xnintr_core_clock_handler+0x1b6/0x360 > [72873.713479] dispatch_irq_head+0x8e/0x110 > [72873.713479] ? xnintr_irq_handler+0x5/0x4c0 > [72873.713481] ? dispatch_irq_head+0x8e/0x110 > [72873.713482] __ipipe_dispatch_irq+0xd9/0x1c0 > [72873.713483] __ipipe_handle_irq+0x86/0x1e0 > [72873.713483] common_interrupt+0xf/0x2c > [72873.713484] > > Maybe, the later one(i.e. ) implies there was an interrupt > request and the common_interuppt() function handler it. No. It's possible for the kernel traceback to include some routines that were in an IRQ, and some more that were outside IRQ context. So you can tell which are which, the stack dump is formatted as: function that was running when the trace was called for the function that call it another function back (...) interrupt_handler of some sort function that was running when the interrupt hit this caller and its parent etc --==_Exmh_1594429520_174210P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Comment: Exmh version 2.9.0 11/07/2018 iQIVAwUBXwkQTwdmEQWDXROgAQKqmw/7BQvCDk5IENQmOAhygoN0v5mn7n1C5Qyt wxVLWF6mxxVYvua/k6kooQv+YBpVtgrlv/SxRrDW9v4oL8nPM6Uc0vbGIvNSCU8S q0qvU5qPA2rflFCbSRJQA9vl5iXc3CNcMznsTJOw0cxjdh54hEwuuintr1yMCZ4l xR/rhu1QlFwh+72iSy8g/wFsX5DJNpLv4qF+4GrngIsxusziKWQXU9wqeYY5PkMz 378Dchrt8j8eLNLColKZz7Yb+lrcslsAYTOqde1GgSMBE8BDchvDQqNisZGM8lsi 4pzB/NVhv1xa1QmmMxT7pldo1dB9blSTKTL4Hi4uTkWzFLYQ+VaHUkXOXrsZLOaa +NgFSrAhtqPVGPkIgMCWHinuwDUyPaTDW02J87JTbJxI9SmEz5jKr5KhSDJ+l127 Ph0yV8me25VAfJIUjEUaVQ9utwraRhHoDTb2kuFOc+/GgVbKhzWxt2Be7aC8rvw2 Za856uz3xtxYYEJlIfXjohKXK9kjxqPFqYEQIfGq4kZl/J6dvv+v96b9kvuuYEW+ A+72fcddDzRmvIaKZMiJrlsmHeqMKcaKe2uf/s8aMW52irWi1R46kClOQZ9ImigE QezlsurPs5aqQhNtBajw8HJgg8tUyWheWnBFOTOLHxrbrkmt/Id6iRPy+5LLcEdE ApbdadsWjgE= =BHeF -----END PGP SIGNATURE----- --==_Exmh_1594429520_174210P-- --===============5269617850418593173== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies --===============5269617850418593173==--