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=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 D54F3C432C3 for ; Sat, 16 Nov 2019 11:22:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AA18C20718 for ; Sat, 16 Nov 2019 11:22:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="J7Wo5ZhG" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727500AbfKPLWn (ORCPT ); Sat, 16 Nov 2019 06:22:43 -0500 Received: from us-smtp-2.mimecast.com ([207.211.31.81]:50559 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727331AbfKPLWn (ORCPT ); Sat, 16 Nov 2019 06:22:43 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1573903362; h=from:from:reply-to:subject:subject:date:date:message-id:message-id:to: cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=DFvtcaYXXdNUDQYLEti992lt0Z4LB/5qnNbfONAo4rk=; b=J7Wo5ZhGjbUvYroCt3mCszamPZ/SKbQN6NKn6i6sXg8YIuSJFOb/eOXQMWRsCyv6q29KK2 bHSqq0aTRXB64h5wKmzwJRpbDQrBCr0uJYD7FbSjj37JvWz6EwtYYA9Q4VF9VSLgzDC4Dy lRgmXnkr0ejKxPKTGDWQA9H7j5gjIzM= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-179-t5d6b-8SNtetDtBVJ2LYZw-1; Sat, 16 Nov 2019 06:22:41 -0500 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 6F21E1802CE2; Sat, 16 Nov 2019 11:22:39 +0000 (UTC) Received: from firesoul.localdomain (ovpn-200-41.brq.redhat.com [10.40.200.41]) by smtp.corp.redhat.com (Postfix) with ESMTP id 172C21036C81; Sat, 16 Nov 2019 11:22:34 +0000 (UTC) Received: from [192.168.42.3] (localhost [IPv6:::1]) by firesoul.localdomain (Postfix) with ESMTP id 05BFE30FC134D; Sat, 16 Nov 2019 12:22:33 +0100 (CET) Subject: [net-next v2 PATCH 0/3] page_pool: followup changes to restore tracepoint features From: Jesper Dangaard Brouer Cc: Toke =?utf-8?q?H=C3=B8iland-J=C3=B8rgensen?= , netdev@vger.kernel.org, Ilias Apalodimas , Jesper Dangaard Brouer , Saeed Mahameed , Matteo Croce , Jonathan Lemon , Lorenzo Bianconi , Tariq Toukan Date: Sat, 16 Nov 2019 12:22:32 +0100 Message-ID: <157390333500.4062.15569811103072483038.stgit@firesoul> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-MC-Unique: t5d6b-8SNtetDtBVJ2LYZw-1 X-Mimecast-Spam-Score: 2 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable To: unlisted-recipients:; (no To-header on input) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This patchset is a followup to Jonathan patch, that do not release pool until inflight =3D=3D 0. That changed page_pool to be responsible for its own delayed destruction instead of relying on xdp memory model. As the page_pool maintainer, I'm promoting the use of tracepoint to troubleshoot and help driver developers verify correctness when converting at driver to use page_pool. The role of xdp:mem_disconnect have changed, which broke my bpftrace tools for shutdown verification. With these changes, the same capabilities are regained. --- Jesper Dangaard Brouer (3): xdp: remove memory poison on free for struct xdp_mem_allocator page_pool: add destroy attempts counter and rename tracepoint page_pool: extend tracepoint to also include the page PFN include/net/page_pool.h | 2 ++ include/trace/events/page_pool.h | 22 +++++++++++++++------- net/core/page_pool.c | 13 +++++++++++-- net/core/xdp.c | 5 ----- 4 files changed, 28 insertions(+), 14 deletions(-) -- Signature