From owner-svn-src-head@freebsd.org Fri Mar 1 03:11:05 2019 Return-Path: Delivered-To: svn-src-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 85522150133D; Fri, 1 Mar 2019 03:11:05 +0000 (UTC) (envelope-from asomers@gmail.com) Received: from mail-lf1-f52.google.com (mail-lf1-f52.google.com [209.85.167.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 011F4710D4; Fri, 1 Mar 2019 03:11:04 +0000 (UTC) (envelope-from asomers@gmail.com) Received: by mail-lf1-f52.google.com with SMTP id a8so11106921lfi.7; Thu, 28 Feb 2019 19:11:04 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=Mcys8F9sK65mf8u3gIWCIi15AwteAWM5eKjuWna92/Y=; b=WF8arhQ8GSaus8A0wX9t+QxZgdYp/tbgDd5Mqz6vUdzQW7kINQb5d8WFCFeo6Ao/Mh sLJ+gvuJrEJDJgTHEVIR2CqwTncVOwlkMFu8kt8CjzBuPi0V7iHNhXkyoM+BdFvXk5uB UZZEw02r0+TYF/hgoZpxmEQFXtQa568tSOvNMLoRv2pBKe+mfDrd1OBYg2N6QaSBkEH/ DSIW7AKbat2TbSGnw8nUcKr5ptG6E9SBFc37eS/beOdB8jHX1Yb69XZZ9uf/i6Gu4g0i aHQR9OWOAOGq/VuRRGdh9siQW8Jk5q3zupooMEEjlIS/IBaNLjY5KomZiJnTPTViXCI4 RcRQ== X-Gm-Message-State: APjAAAWDbEN89ho6iD39rXXGIllbuEamCR9es4EBeOZI8F4y+Ey6T7AV 70S0va2g574zhsYS1wy3G3E+BC2nbat/TXtKmfAr+KaO X-Google-Smtp-Source: APXvYqwERQBc3schfBl86w5F8YRC+1zuBCoz3J8hw6qpruLqVGYpH8Rj59XKRwS+eRW5nXo4FeL7T5CKT9AYZxp2vK8= X-Received: by 2002:ac2:415a:: with SMTP id c26mr1655356lfi.62.1551409862684; Thu, 28 Feb 2019 19:11:02 -0800 (PST) MIME-Version: 1.0 References: <201902232114.x1NLE0cH085345@repo.freebsd.org> In-Reply-To: From: Alan Somers Date: Thu, 28 Feb 2019 20:10:50 -0700 Message-ID: Subject: Re: svn commit: r344487 - in head/sys: conf gnu/gcov To: Matthew Macy Cc: src-committers , svn-src-all , svn-src-head Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 011F4710D4 X-Spamd-Bar: ------ Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-6.97 / 15.00]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; NEURAL_HAM_SHORT(-0.97)[-0.968,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; REPLY(-4.00)[] X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Mar 2019 03:11:05 -0000 On Thu, Feb 28, 2019 at 6:40 PM Matthew Macy wrote: > > to config add: > options LINDEBUGFS > options GCOV > > compile kernel with gcc (otherwise it will be a no-op) > > sysctl debug.gcov.enable=1 > > mount -t debugfs debugfs /sys/kernel/debug > > (or wherever) and the output artifacts will appear under gcov/ build path> - you need to be root to see the artifacts > > gcov can then generate the results as it would normally from the > profiling and the build time artifacts > > bug reports welcome > > > -M Here's a bug report: I rebuilt the kernel but boot fails with this error. Do I need to rebuild world too? Mounting local filesystems:kldload: fdescfs.ko: lost base for reltab linker_load_file: /boot/kernel/fdescfs.ko - unsupported file type mount: fdescfs: Operation not supported by device Mounting /etc/fstab filesystems failed, will retry after root mount hold release kldload: fdescfs.ko: lost base for reltab linker_load_file: /boot/kernel/fdescfs.ko - unsupported file type mount: fdescfs: Operation not supported by device . Mounting /etc/fstab filesystems failed, startup aborted