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=-3.8 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 0FBDFC433DF for ; Thu, 6 Aug 2020 17:57:33 +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 4A4E8206B2 for ; Thu, 6 Aug 2020 17:57:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="toIS2Kfq" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4A4E8206B2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com 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 1k3k8G-0001XX-To; Thu, 06 Aug 2020 13:56:48 -0400 Received: from mail-vk1-xa43.google.com ([2607:f8b0:4864:20::a43]) by shelob.surriel.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.94) (envelope-from ) id 1k3k8D-0001XS-Va for kernelnewbies@kernelnewbies.org; Thu, 06 Aug 2020 13:56:45 -0400 Received: by mail-vk1-xa43.google.com with SMTP id q72so3387487vkb.11 for ; Thu, 06 Aug 2020 10:56:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=sKeLDwgoCMN5+FUjDeoJZXNHf6CwaRqw5AQBoDQHPWg=; b=toIS2KfqZjtT3OwJ8UWerL8hVYQly1avQ/ETMtPw/CoKU8k/DCAwVXUI/xAUHZnOlT oRqPc2O6FqHjLcO/VPn3CJUkiJyki/1rf+0rbK3K50CI7+jtdpVHmNR7AcyjHezAAEat TNSv9GQCnU5/qNk482tIKS2LYc62W3L/KeKbwixtXyYYl2iHExjlGnjBxoEYyAeKs0kB apQ0/c1ldLH/MfAUpIHt5HeY26iszDFP9iNwuaXvFEZnabZCTn+n806KmI1uiQ9+T02X 4PDgdT9Tw+EwBPg88yAlWRzewZrgAfxwBXwJUaNuNXmiMsNxt3H9ddwu3pHChsiruBAU tl9w== 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=sKeLDwgoCMN5+FUjDeoJZXNHf6CwaRqw5AQBoDQHPWg=; b=HZ6E7DkaY6M70CpxRUkrsGWRjwjDOfNl+L31h5gOFAF9wE/3O9ftz33QXQjrDDepJJ p8ZFU0uJrFTB4KtPShcQSgkCXgrzyYcetQWNJt18kKrbho05OgVlknBnq0WzbOH0gF2f q9zny4FtHFg8/mpjqnBsy1ZSfGpLSKFt3BlY93IXvVQwQR5gIIIAccO+g1y31mMHhWS7 29uDQ9jMCZMBZEhyqE9rKDQEiGkaHJPusoRhdvI747QDwtUZxs6CodhUxF0KhVBNr3JV Y4weip7WzHUc38RyOutQpBAYDD0RYfCHIK+MSyEQIPdG3QrPdfWI3sIPp9yjB6xI1njf G+eQ== X-Gm-Message-State: AOAM531F1GOEwpyeL5Rg0zAnDntvIyGZa5nmG3aP5rcsDhHd42HCWNWk bgnWbcrU/4DVoKWGW9wt7jlr3whNDmqQzCm8R2g= X-Google-Smtp-Source: ABdhPJxwVVzA+vmIu42LYi0cYpITsIJZWeSev2MNYRZIuxrMZSxeJEqozMhuCa2TWsDb4x398FKSfY+FZ8A6PsiSX34= X-Received: by 2002:a1f:9713:: with SMTP id z19mr2392905vkd.93.1596736604566; Thu, 06 Aug 2020 10:56:44 -0700 (PDT) MIME-Version: 1.0 References: <20200805183023.586590-1-jim.cromie@gmail.com> <20200806103951.GB2826830@kroah.com> In-Reply-To: <20200806103951.GB2826830@kroah.com> From: jim.cromie@gmail.com Date: Thu, 6 Aug 2020 11:56:17 -0600 Message-ID: Subject: Re: [PATCH 0/8] dyndbg: WIP diet plan To: Greg KH Cc: Jason Baron , 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: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kernelnewbies-bounces@kernelnewbies.org On Thu, Aug 6, 2020 at 4:40 AM Greg KH wrote: > > On Wed, Aug 05, 2020 at 12:30:15PM -0600, Jim Cromie wrote: > > dynamic-debug metadata is bloated; the __dyndbg linker section is > > effectively an array of struct _ddebugs, its 1st 3 members are highly > > repetetive, with 90%, 84%, 45% repeats. Total reported usage ~150kb > > for ~2600 callsites on my laptop config. > > > > This patchset is one diet plan. it all holds together nicely until the > > "cache" commit, when it blows up starting init (or right after freeing > > unused kernel image, which Im hoping to do...). The following commit > > tweaks locking in an attempt to recover, but fails. > > > > Any reason this went to kernelnewbies, and not lkml so that other > developers could see it? > > thanks, > > greg k-h Mostly cuz its broken. and I feel like I have dumb questions I was hoping to repair the stupid errors before going to LKML trade dumb questions for considered answers, and hopefully reply with progress But I'll take your question as advice. _______________________________________________ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies