From patchwork Mon Mar 14 16:01:05 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 12780334 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.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 B577FC433F5 for ; Mon, 14 Mar 2022 16:01:33 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.290302.492303 (Exim 4.92) (envelope-from ) id 1nTn8K-0003dK-Pp; Mon, 14 Mar 2022 16:01:20 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 290302.492303; Mon, 14 Mar 2022 16:01:20 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1nTn8K-0003dB-LB; Mon, 14 Mar 2022 16:01:20 +0000 Received: by outflank-mailman (input) for mailman id 290302; Mon, 14 Mar 2022 16:01:19 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1nTn8J-0003d5-9E for xen-devel@lists.xenproject.org; Mon, 14 Mar 2022 16:01:19 +0000 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id fb2b79ca-a3af-11ec-853b-5f4723681683; Mon, 14 Mar 2022 17:01:18 +0100 (CET) Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-626-M2Tne6xGPg2n2NYdBr40Ew-1; Mon, 14 Mar 2022 12:01:13 -0400 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 226C32999B2F; Mon, 14 Mar 2022 16:01:11 +0000 (UTC) Received: from blackfin.pond.sub.org (unknown [10.36.112.3]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 114ACC44AE7; Mon, 14 Mar 2022 16:01:10 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id A1CFC21E66D4; Mon, 14 Mar 2022 17:01:08 +0100 (CET) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: fb2b79ca-a3af-11ec-853b-5f4723681683 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1647273676; 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: content-transfer-encoding:content-transfer-encoding; bh=LjuojNlljLxHI2R7532V3Nrcf8uo+00tFTpTU3tAPp8=; b=C/wqKWVeFh2EezhqK9KdTSC8PPrYpMLi4Veu07P6l4sTXYG/o5DecU04Wa5l0ZPnqriV6q hk0Ou9j8l0wOThiAJHgbY1jxF5YwunTjH3+FfzwAvE/IFilyuoRX44/mM+zGYca3XVVJYX TU6AxWvN7Fy8vqkx1yW27ZCB0Fel8yQ= X-MC-Unique: M2Tne6xGPg2n2NYdBr40Ew-1 From: Markus Armbruster To: qemu-devel@nongnu.org Cc: Paolo Bonzini , Richard Henderson , Gerd Hoffmann , Christian Schoenebeck , "Gonglei (Arei)" , =?utf-8?q?Marc-Andr=C3=A9_Lurea?= =?utf-8?q?u?= , "Michael S. Tsirkin" , Igor Mammedov , Ani Sinha , Laurent Vivier , Amit Shah , Peter Maydell , Stefano Stabellini , Anthony Perard , Paul Durrant , =?utf-8?q?Herv=C3=A9_Poussineau?= , Aleksandar Rikalo , Corey Minyard , Patrick Venture , Eduardo Habkost , Marcel Apfelbaum , Peter Xu , Jason Wang , =?utf-8?q?C=C3=A9dric_Le_Goater?= , Daniel Henrique Barboza , David Gibson , Greg Kurz , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Jean-Christophe Dubois , Keith Busch , Klaus Jensen , Yuval Shaia , Yoshinori Sato , Magnus Damm , Fabien Chouteau , KONRAD Frederic , Mark Cave-Ayland , Artyom Tarasenko , Alex Williamson , Eric Auger , Max Filippov , Juan Quintela , "Dr. David Alan Gilbert" , Konstantin Kostiuk , Michael Roth , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Pavel Dovgalyuk , =?utf-8?q?Alex_Benn=C3=A9e?= , David Hildenbrand , Wenchao Wang , Colin Xu , Kamil Rytarowski , Reinoud Zandijk , Sunil Muthuswamy , Cornelia Huck , Thomas Huth , Eric Blake , Vladimir Sementsov-Ogievskiy , John Snow , kvm@vger.kernel.org, qemu-arm@nongnu.org, xen-devel@lists.xenproject.org, qemu-ppc@nongnu.org, qemu-block@nongnu.org, haxm-team@intel.com, qemu-s390x@nongnu.org Subject: [PATCH 0/3] Use g_new() & friends where that makes obvious Date: Mon, 14 Mar 2022 17:01:05 +0100 Message-Id: <20220314160108.1440470-1-armbru@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.8 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=armbru@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com 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. 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. 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 ++-- scripts/coverity-scan/model.c | 2 +- semihosting/config.c | 2 +- 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 +- 110 files changed, 284 insertions(+), 214 deletions(-) create mode 100644 scripts/coccinelle/use-g_new-etc.cocci Reviewed-by: Philippe Mathieu-Daudé --- 2.35.1