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 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EC960C433F5 for ; Tue, 22 Mar 2022 13:27:13 +0000 (UTC) Received: from localhost ([::1]:48678 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nWeXY-0004In-QP for qemu-devel@archiver.kernel.org; Tue, 22 Mar 2022 09:27:12 -0400 Received: from eggs.gnu.org ([209.51.188.92]:56860) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nWeWe-00033q-Gj for qemu-devel@nongnu.org; Tue, 22 Mar 2022 09:26:16 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:31709) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nWeWX-0003Ui-Uh for qemu-devel@nongnu.org; Tue, 22 Mar 2022 09:26:15 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1647955568; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=Mk3hl79SOvvRPnNyVsHVQnRiriDoUuiJYwsyISW4b0k=; b=HnxH/dWiG5qdYcUOX8x0sbDblWxYk3DpJvwysjs5rTensNtmzJCvEKEPxTChTm5D3zAsia fH+P579ZrOmSu66O9OeKvezz9910JmLIUAeqLsvTeo+GnjUU6QqHSzH0dQmt28iXzSSnyj 08q2Foo0YtbSEESzWzNhZSNnzaiNA6Q= Received: from mail-wm1-f72.google.com (mail-wm1-f72.google.com [209.85.128.72]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-176-dYFcTk0oOYaFE60yBXyB_w-1; Tue, 22 Mar 2022 09:26:07 -0400 X-MC-Unique: dYFcTk0oOYaFE60yBXyB_w-1 Received: by mail-wm1-f72.google.com with SMTP id 2-20020a1c0202000000b0038c71e8c49cso1278841wmc.1 for ; Tue, 22 Mar 2022 06:26:07 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=Mk3hl79SOvvRPnNyVsHVQnRiriDoUuiJYwsyISW4b0k=; b=dVMBFzdqVLL+8gO7Zd6rlXhfV6icQ8vtR8fWzVugHodD4PMO43nLDIH+l7v82PVQ34 raHnKQzOYZtpUjgFYTYr3Mg9JxQ3DJ17klQR6fxCoCpeILaCznO/eUAs+R8R8kzncJou K/gZLodh5QFMM2GOM2hLTKslI/ZFaTwaV/UkK9Y6G46EAXrCtL6KMfu235Na0v2ifKLt w9mG/1vhaFDPgCHODk0RSx75NZyIkzBHXDWpLbKAC5aFxc7BiH8BzJH+Ba1jHgVKR54f qPSFWPKbepbzrChNMSlBtmxEe0qRPr9bJFRADYSBqX+2cdNQuJCfxjuq5s+KZZnyRW4f HFyg== X-Gm-Message-State: AOAM533ytCCUOAJdWC8pPz36HiDhzt/CaXIJVOMDEgh/TGfDS1syC9ZV LgK+DjZ4Gx48mzuaQUetq8hW48WFVX4b1QL5VLrbGyi1v7kg+KiSln56C75PiDxD2vQJYUPhRjd q4bYquYqqWNk9WFA= X-Received: by 2002:a05:600c:1e0d:b0:38c:bb0c:e01 with SMTP id ay13-20020a05600c1e0d00b0038cbb0c0e01mr2299358wmb.115.1647955566004; Tue, 22 Mar 2022 06:26:06 -0700 (PDT) X-Google-Smtp-Source: ABdhPJy9R6xweHbYOlT41nX8VS8jupEnB/cxHKbwK3VEwN1bfzNeZZNTKEUKx2jEvOzPtm6sO39XFQ== X-Received: by 2002:a05:600c:1e0d:b0:38c:bb0c:e01 with SMTP id ay13-20020a05600c1e0d00b0038cbb0c0e01mr2299266wmb.115.1647955565576; Tue, 22 Mar 2022 06:26:05 -0700 (PDT) Received: from redhat.com ([2.55.132.0]) by smtp.gmail.com with ESMTPSA id b15-20020adfc74f000000b001e888b871a0sm15919477wrh.87.2022.03.22.06.25.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Mar 2022 06:26:04 -0700 (PDT) Date: Tue, 22 Mar 2022 09:25:54 -0400 From: "Michael S. Tsirkin" To: Markus Armbruster Subject: Re: [PATCH v2 0/3] Use g_new() & friends where that makes obvious sense Message-ID: <20220322092520-mutt-send-email-mst@kernel.org> References: <20220315144156.1595462-1-armbru@redhat.com> MIME-Version: 1.0 In-Reply-To: <20220315144156.1595462-1-armbru@redhat.com> Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=mst@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Received-SPF: pass client-ip=170.10.133.124; envelope-from=mst@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , kvm@vger.kernel.org, Paul Durrant , Jason Wang , Christian Schoenebeck , qemu-devel@nongnu.org, Peter Xu , Klaus Jensen , KONRAD Frederic , Konstantin Kostiuk , Gerd Hoffmann , Ani Sinha , Reinoud Zandijk , Eric Blake , Sunil Muthuswamy , Stefano Stabellini , xen-devel@lists.xenproject.org, Yoshinori Sato , Juan Quintela , John Snow , Daniel Henrique Barboza , Magnus Damm , Kamil Rytarowski , "Gonglei \(Arei\)" , =?iso-8859-1?Q?Herv=E9?= Poussineau , Michael Roth , Anthony Perard , =?iso-8859-1?Q?Marc-Andr=E9?= Lureau , Artyom Tarasenko , Laurent Vivier , Aleksandar Rikalo , Amit Shah , Mark Cave-Ayland , haxm-team@intel.com, Richard Henderson , Greg Kurz , Fabien Chouteau , Yuval Shaia , Thomas Huth , Eric Auger , Alex Williamson , qemu-arm@nongnu.org, =?iso-8859-1?Q?C=E9dric?= Le Goater , Pavel Dovgalyuk , Paolo Bonzini , Keith Busch , qemu-ppc@nongnu.org, David Hildenbrand , Alex =?iso-8859-1?Q?Benn=E9e?= , David Gibson , Eduardo Habkost , Vladimir Sementsov-Ogievskiy , Daniel =?iso-8859-1?Q?P=2E_Berrang=E9?= , qemu-block@nongnu.org, Max Filippov , qemu-s390x@nongnu.org, Patrick Venture , Cornelia Huck , Philippe =?iso-8859-1?Q?Mathieu-Daud=E9?= , Jean-Christophe Dubois , Corey Minyard , Wenchao Wang , Igor Mammedov , "Dr. David Alan Gilbert" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Tue, Mar 15, 2022 at 03:41:53PM +0100, Markus Armbruster wrote: > g_new(T, n) is neater than g_malloc(sizeof(T) * n). It's also safer, > for two reasons. One, it catches multiplication overflowing size_t. > Two, it returns T * rather than void *, which lets the compiler catch > more type errors. > > This series only touches allocations with size arguments of the form > sizeof(T). It's mechanical, except for a tiny fix in PATCH 2. > > PATCH 1 adds the Coccinelle script. > > PATCH 2 cleans up the virtio-9p subsystem, and fixes a harmless typing > error uncovered by the cleanup. > > PATCH 3 cleans up everything else. I started to split it up, but > splitting is a lot of decisions, and I just can't see the value. series: Acked-by: Michael S. Tsirkin > For instance, MAINTAINERS tells me to split for subsystem "virtio", > patching > > hw/char/virtio-serial-bus.c > hw/display/virtio-gpu.c > hw/net/virtio-net.c > hw/virtio/virtio-crypto.c > hw/virtio/virtio-iommu.c > hw/virtio/virtio.c > > But it also tells me to split for subsystem "Character devices", > patching > > hw/char/parallel.c | 2 +- > hw/char/riscv_htif.c | 2 +- > hw/char/virtio-serial-bus.c | 6 +- > > and for subsystem "Network devices", patching > > hw/net/virtio-net.c > > and for subsystem "virtio-gpu", patching > > hw/display/virtio-gpu.c > > I guess I'd go with "virtio". Six files down, 103 to go. Thanks, but > no thanks. > > Since the transformation is local to a function call, dropping is > completely safe. We can deal with conflicts by dropping conflicting > hunks, with "git-pull -s recursive -X ours". Or drop entire files > with conflicts. > > If you want me to split off certain parts, please tell me exactly what > you want split off, and I'll gladly do the splitting. I don't mind > the splitting part, I do mind the *thinking* part. > > I backed out two changes made by the Coccinelle script: > scripts/coverity-scan/model.c, because that's special, and > semihosting/config.c, because it has a typing error similar to the one > fixed in PATCH 2, and Alex already posted a patch for it. > > v2: > * PATCH 3: Change to scripts/coverity-scan/model.c dropped [Eric] > * PATCH 3: Change to semihosting/config.c dropped [Alex] > * Commit messages tweaked > > Markus Armbruster (3): > scripts/coccinelle: New use-g_new-etc.cocci > 9pfs: Use g_new() & friends where that makes obvious sense > Use g_new() & friends where that makes obvious sense > > scripts/coccinelle/use-g_new-etc.cocci | 75 ++++++++++++++++++++++++ > include/qemu/timer.h | 2 +- > accel/kvm/kvm-all.c | 6 +- > accel/tcg/tcg-accel-ops-mttcg.c | 2 +- > accel/tcg/tcg-accel-ops-rr.c | 4 +- > audio/audio.c | 4 +- > audio/audio_legacy.c | 6 +- > audio/dsoundaudio.c | 2 +- > audio/jackaudio.c | 6 +- > audio/paaudio.c | 4 +- > backends/cryptodev.c | 2 +- > contrib/vhost-user-gpu/vhost-user-gpu.c | 2 +- > cpus-common.c | 4 +- > dump/dump.c | 2 +- > hw/9pfs/9p-proxy.c | 2 +- > hw/9pfs/9p-synth.c | 4 +- > hw/9pfs/9p.c | 8 +-- > hw/9pfs/codir.c | 6 +- > hw/acpi/hmat.c | 2 +- > hw/audio/intel-hda.c | 2 +- > hw/char/parallel.c | 2 +- > hw/char/riscv_htif.c | 2 +- > hw/char/virtio-serial-bus.c | 6 +- > hw/core/irq.c | 2 +- > hw/core/reset.c | 2 +- > hw/display/pxa2xx_lcd.c | 2 +- > hw/display/tc6393xb.c | 2 +- > hw/display/virtio-gpu.c | 4 +- > hw/display/xenfb.c | 4 +- > hw/dma/rc4030.c | 4 +- > hw/i2c/core.c | 4 +- > hw/i2c/i2c_mux_pca954x.c | 2 +- > hw/i386/amd_iommu.c | 4 +- > hw/i386/intel_iommu.c | 2 +- > hw/i386/xen/xen-hvm.c | 10 ++-- > hw/i386/xen/xen-mapcache.c | 14 ++--- > hw/input/lasips2.c | 2 +- > hw/input/pckbd.c | 2 +- > hw/input/ps2.c | 4 +- > hw/input/pxa2xx_keypad.c | 2 +- > hw/input/tsc2005.c | 3 +- > hw/intc/riscv_aclint.c | 6 +- > hw/intc/xics.c | 2 +- > hw/m68k/virt.c | 2 +- > hw/mips/mipssim.c | 2 +- > hw/misc/applesmc.c | 2 +- > hw/misc/imx6_src.c | 2 +- > hw/misc/ivshmem.c | 4 +- > hw/net/virtio-net.c | 4 +- > hw/nvme/ns.c | 2 +- > hw/pci-host/pnv_phb3.c | 2 +- > hw/pci-host/pnv_phb4.c | 2 +- > hw/pci/pcie_sriov.c | 2 +- > hw/ppc/e500.c | 2 +- > hw/ppc/ppc.c | 8 +-- > hw/ppc/ppc405_boards.c | 4 +- > hw/ppc/ppc405_uc.c | 18 +++--- > hw/ppc/ppc4xx_devs.c | 2 +- > hw/ppc/ppc_booke.c | 4 +- > hw/ppc/spapr.c | 2 +- > hw/ppc/spapr_events.c | 2 +- > hw/ppc/spapr_hcall.c | 2 +- > hw/ppc/spapr_numa.c | 3 +- > hw/rdma/vmw/pvrdma_dev_ring.c | 2 +- > hw/rdma/vmw/pvrdma_qp_ops.c | 6 +- > hw/sh4/r2d.c | 4 +- > hw/sh4/sh7750.c | 2 +- > hw/sparc/leon3.c | 2 +- > hw/sparc64/sparc64.c | 4 +- > hw/timer/arm_timer.c | 2 +- > hw/timer/slavio_timer.c | 2 +- > hw/vfio/pci.c | 4 +- > hw/vfio/platform.c | 4 +- > hw/virtio/virtio-crypto.c | 2 +- > hw/virtio/virtio-iommu.c | 2 +- > hw/virtio/virtio.c | 5 +- > hw/xtensa/xtfpga.c | 2 +- > linux-user/syscall.c | 2 +- > migration/dirtyrate.c | 4 +- > migration/multifd-zlib.c | 4 +- > migration/ram.c | 2 +- > monitor/misc.c | 2 +- > monitor/qmp-cmds.c | 2 +- > qga/commands-win32.c | 8 +-- > qga/commands.c | 2 +- > qom/qom-qmp-cmds.c | 2 +- > replay/replay-char.c | 4 +- > replay/replay-events.c | 10 ++-- > softmmu/bootdevice.c | 4 +- > softmmu/dma-helpers.c | 4 +- > softmmu/memory_mapping.c | 2 +- > target/i386/cpu-sysemu.c | 2 +- > target/i386/hax/hax-accel-ops.c | 4 +- > target/i386/nvmm/nvmm-accel-ops.c | 4 +- > target/i386/whpx/whpx-accel-ops.c | 4 +- > target/i386/whpx/whpx-all.c | 2 +- > target/s390x/cpu-sysemu.c | 2 +- > tests/qtest/virtio-9p-test.c | 4 +- > tests/unit/test-hbitmap.c | 2 +- > tests/unit/test-qmp-cmds.c | 14 ++--- > tests/unit/test-qobject-output-visitor.c | 2 +- > tests/unit/test-vmstate.c | 42 ++++++------- > ui/vnc-enc-tight.c | 2 +- > util/envlist.c | 2 +- > util/hbitmap.c | 2 +- > util/main-loop.c | 2 +- > util/qemu-timer.c | 2 +- > util/vfio-helpers.c | 4 +- > 108 files changed, 282 insertions(+), 212 deletions(-) > create mode 100644 scripts/coccinelle/use-g_new-etc.cocci > > -- > 2.35.1