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=-2.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIMWL_WL_MED, USER_AGENT_GIT autolearn=ham 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 04BF7C3279B for ; Fri, 6 Jul 2018 19:34:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A4551223B1 for ; Fri, 6 Jul 2018 19:34:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=osandov-com.20150623.gappssmtp.com header.i=@osandov-com.20150623.gappssmtp.com header.b="ZScH+vCq" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A4551223B1 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=osandov.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934737AbeGFTcs (ORCPT ); Fri, 6 Jul 2018 15:32:48 -0400 Received: from mail-pf0-f193.google.com ([209.85.192.193]:44473 "EHLO mail-pf0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934654AbeGFTcq (ORCPT ); Fri, 6 Jul 2018 15:32:46 -0400 Received: by mail-pf0-f193.google.com with SMTP id j3-v6so9175904pfh.11 for ; Fri, 06 Jul 2018 12:32:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=osandov-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id; bh=398C5SJUHRbHDItC3HsfQCy0QGnauQYu+M7fUUYd7jY=; b=ZScH+vCqaY7FBAJnUnVneHnQZ5pu7RZ6Vg2QuGh4dj4nCkqJGX4S8zlc1OHmW6aoiK uzJYWXJ+ywbDUvfV6aJBhWmzrdIpDVVz4V3S3/picU+aGDueGlghuQADAEJYXHD/SZXg Omue5byX2hBaPsYuOv+P2yQRTUf6gKLUH8EJGiOKfjh8bCAXCWR7hmtcHACQx8vvpAry OSq2JmI+QmaD+eZ/URv713BGHoBJ0XKKN6zV5bNv0vQcBAlZFKtMtG9wXa0kprrWdBN9 CZLUrM1AGMX6+SMO1KU1leT6DMTsjD9te6HmCyHF/gM/UvXt6xStmeCJcekAmTYolDtd EDeg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=398C5SJUHRbHDItC3HsfQCy0QGnauQYu+M7fUUYd7jY=; b=UDl5ikG0R5hIP/6Wl8nj7ZZh9q/3Y9VYH/cuuuVfKfW5gL6bnEL7+IJ0cvBuRqFkXo OM6Q0h6/lq9Pbf5RuQ96fHF1aJEsqkhqAXHSnjXmHFs66CljS2ZsH/922dYSJ2O7vJ/h E7S8pnX2+/0YvBTZsvwattNdxAQEZnlFlZnb24XJLiS56ShzH7i+0HKeR5Rc06Slr9U2 pGs7Af3LiGGzg500JLuKabPQq5oEjRaEqhdcT3Vg705Oui8ULq7fcjP/yGtuyKsq8a3V GP5AQS56QaOV2haLiFe6KVWSqxJmyR5JJ+X/m/BVFZG0pmx3RotC/+q6l2wZ9kIrofNz 5Xng== X-Gm-Message-State: APt69E1HerRhPrKNqXsZPw+KLWQe/gB9YruDzT7bO43CiWSflWfbc84A ZfD8++NXqiY/MgZtRvTAAB/Kwnilhnw= X-Google-Smtp-Source: AAOMgpdEJMidiqM48vpH2x1CJycsfYGKme9GRTe5STPCYbTUjdNyHwKSJi83aBZ1QzG3kBvm7NR/AQ== X-Received: by 2002:a63:8548:: with SMTP id u69-v6mr1166447pgd.346.1530905564935; Fri, 06 Jul 2018 12:32:44 -0700 (PDT) Received: from vader.thefacebook.com ([2620:10d:c090:200::4:984e]) by smtp.gmail.com with ESMTPSA id a11-v6sm12846162pgq.32.2018.07.06.12.32.43 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 06 Jul 2018 12:32:44 -0700 (PDT) From: Omar Sandoval To: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Alexey Dobriyan Cc: Eric Biederman , kernel-team@fb.com Subject: [PATCH 0/7] /proc/kcore improvements Date: Fri, 6 Jul 2018 12:32:31 -0700 Message-Id: X-Mailer: git-send-email 2.18.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Omar Sandoval Hi, This series makes a few improvements to /proc/kcore. Patches 1 and 2 are prep patches. Patch 3 is a fix/cleanup. Patch 4 is another prep patch. Patches 5 and 6 are optimizations to ->read(). Patch 7 adds vmcoreinfo to /proc/kcore. This series is based on v4.18-rc3. Please consider it for v4.19. Thanks! Omar Sandoval (7): proc/kcore: don't grab lock for kclist_add() proc/kcore: replace kclist_lock rwlock with rwsem proc/kcore: fix memory hotplug vs multiple opens race proc/kcore: hold lock during read proc/kcore: clean up ELF header generation proc/kcore: optimize multiple page reads proc/kcore: add vmcoreinfo note to /proc/kcore fs/proc/Kconfig | 1 + fs/proc/kcore.c | 524 +++++++++++++++++-------------------- include/linux/crash_core.h | 2 + kernel/crash_core.c | 4 +- 4 files changed, 241 insertions(+), 290 deletions(-) -- 2.18.0