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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Wed, 16 Jan 2019 13:44:28 -0000 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x0GDiR5o8782174 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 16 Jan 2019 13:44:27 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 97C1452054; Wed, 16 Jan 2019 13:44:27 +0000 (GMT) Received: from rapoport-lnx (unknown [9.148.8.226]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTPS id 784FD52050; Wed, 16 Jan 2019 13:44:23 +0000 (GMT) Received: by rapoport-lnx (sSMTP sendmail emulation); Wed, 16 Jan 2019 15:44:22 +0200 From: Mike Rapoport To: linux-mm@kvack.org Cc: Andrew Morton , Catalin Marinas , Christoph Hellwig , "David S. Miller" , Dennis Zhou , Geert Uytterhoeven , Greentime Hu , Greg Kroah-Hartman , Guan Xuetao , Guo Ren , Heiko Carstens , Mark Salter , Matt Turner , Max Filippov , Michael Ellerman , Michal Simek , Paul Burton , Petr Mladek , Rich Felker , Richard Weinberger , Rob Herring , Russell King , Stafford Horne , Tony Luck , Vineet Gupta , Yoshinori Sato , devicetree@vger.kernel.org, kasan-dev@googlegroups.com, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-c6x-dev@linux-c6x.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-um@lists.infradead.org, linux-usb@vger.kernel.org, linux-xtensa@linux-xtensa.org, linuxppc-dev@lists.ozlabs.org, openrisc@lists.librecores.org, sparclinux@vger.kernel.org, uclinux-h8-devel@lists.sourceforge.jp, x86@kernel.org, xen-devel@lists.xenproject.org, Mike Rapoport Subject: [PATCH 00/21] Refine memblock API Date: Wed, 16 Jan 2019 15:44:00 +0200 X-Mailer: git-send-email 2.7.4 X-TM-AS-GCONF: 00 x-cbid: 19011613-4275-0000-0000-000002FFFEDF X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19011613-4276-0000-0000-0000380E2031 Message-Id: <1547646261-32535-1-git-send-email-rppt@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-01-16_05:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=3 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=793 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1901160114 Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Hi, Current memblock API is quite extensive and, which is more annoying, duplicated. Except the low-level functions that allow searching for a free memory region and marking it as reserved, memblock provides three (well, two and a half) sets of functions to allocate memory. There are several overlapping functions that return a physical address and there are functions that return virtual address. Those that return the virtual address may also clear the allocated memory. And, on top of all that, some allocators panic and some return NULL in case of error. This set tries to reduce the mess, and trim down the amount of memblock allocation methods. Patches 1-10 consolidate the functions that return physical address of the allocated memory Patches 11-13 are some trivial cleanups Patches 14-19 add checks for the return value of memblock_alloc*() and panics in case of errors. The patches 14-18 include some minor refactoring to have better readability of the resulting code and patch 19 is a mechanical addition of if (!ptr) panic(); after memblock_alloc*() calls. And, finally, patches 20 and 21 remove panic() calls memblock and _nopanic variants from memblock. Christophe Leroy (1): powerpc: use memblock functions returning virtual address Mike Rapoport (20): openrisc: prefer memblock APIs returning virtual address memblock: replace memblock_alloc_base(ANYWHERE) with memblock_phys_alloc memblock: drop memblock_alloc_base_nid() memblock: emphasize that memblock_alloc_range() returns a physical address memblock: memblock_phys_alloc_try_nid(): don't panic memblock: memblock_phys_alloc(): don't panic memblock: drop __memblock_alloc_base() memblock: drop memblock_alloc_base() memblock: refactor internal allocation functions memblock: make memblock_find_in_range_node() and choose_memblock_flags() static arch: use memblock_alloc() instead of memblock_alloc_from(size, align, 0) arch: don't memset(0) memory returned by memblock_alloc() ia64: add checks for the return value of memblock_alloc*() sparc: add checks for the return value of memblock_alloc*() mm/percpu: add checks for the return value of memblock_alloc*() init/main: add checks for the return value of memblock_alloc*() swiotlb: add checks for the return value of memblock_alloc*() treewide: add checks for the return value of memblock_alloc*() memblock: memblock_alloc_try_nid: don't panic memblock: drop memblock_alloc_*_nopanic() variants arch/alpha/kernel/core_cia.c | 5 +- arch/alpha/kernel/core_marvel.c | 6 + arch/alpha/kernel/pci-noop.c | 11 +- arch/alpha/kernel/pci.c | 11 +- arch/alpha/kernel/pci_iommu.c | 16 +- arch/alpha/kernel/setup.c | 2 +- arch/arc/kernel/unwind.c | 3 +- arch/arc/mm/highmem.c | 4 + arch/arm/kernel/setup.c | 6 + arch/arm/mm/init.c | 6 +- arch/arm/mm/mmu.c | 14 +- arch/arm64/kernel/setup.c | 9 +- arch/arm64/mm/kasan_init.c | 10 ++ arch/arm64/mm/mmu.c | 2 + arch/arm64/mm/numa.c | 4 + arch/c6x/mm/dma-coherent.c | 4 + arch/c6x/mm/init.c | 4 +- arch/csky/mm/highmem.c | 5 + arch/h8300/mm/init.c | 4 +- arch/ia64/kernel/mca.c | 25 +-- arch/ia64/mm/contig.c | 8 +- arch/ia64/mm/discontig.c | 4 + arch/ia64/mm/init.c | 38 ++++- arch/ia64/mm/tlb.c | 6 + arch/ia64/sn/kernel/io_common.c | 3 + arch/ia64/sn/kernel/setup.c | 12 +- arch/m68k/atari/stram.c | 4 + arch/m68k/mm/init.c | 3 + arch/m68k/mm/mcfmmu.c | 7 +- arch/m68k/mm/motorola.c | 9 ++ arch/m68k/mm/sun3mmu.c | 6 + arch/m68k/sun3/sun3dvma.c | 3 + arch/microblaze/mm/init.c | 10 +- arch/mips/cavium-octeon/dma-octeon.c | 3 + arch/mips/kernel/setup.c | 3 + arch/mips/kernel/traps.c | 5 +- arch/mips/mm/init.c | 5 + arch/nds32/mm/init.c | 12 ++ arch/openrisc/mm/init.c | 5 +- arch/openrisc/mm/ioremap.c | 8 +- arch/powerpc/kernel/dt_cpu_ftrs.c | 8 +- arch/powerpc/kernel/irq.c | 5 - arch/powerpc/kernel/paca.c | 6 +- arch/powerpc/kernel/pci_32.c | 3 + arch/powerpc/kernel/prom.c | 5 +- arch/powerpc/kernel/rtas.c | 6 +- arch/powerpc/kernel/setup-common.c | 3 + arch/powerpc/kernel/setup_32.c | 26 ++-- arch/powerpc/kernel/setup_64.c | 4 + arch/powerpc/lib/alloc.c | 3 + arch/powerpc/mm/hash_utils_64.c | 11 +- arch/powerpc/mm/mmu_context_nohash.c | 9 ++ arch/powerpc/mm/numa.c | 4 + arch/powerpc/mm/pgtable-book3e.c | 12 +- arch/powerpc/mm/pgtable-book3s64.c | 3 + arch/powerpc/mm/pgtable-radix.c | 9 +- arch/powerpc/mm/ppc_mmu_32.c | 3 + arch/powerpc/platforms/pasemi/iommu.c | 3 + arch/powerpc/platforms/powermac/nvram.c | 3 + arch/powerpc/platforms/powernv/opal.c | 3 + arch/powerpc/platforms/powernv/pci-ioda.c | 8 + arch/powerpc/platforms/ps3/setup.c | 3 + arch/powerpc/sysdev/dart_iommu.c | 3 + arch/powerpc/sysdev/msi_bitmap.c | 3 + arch/s390/kernel/crash_dump.c | 3 + arch/s390/kernel/setup.c | 16 ++ arch/s390/kernel/smp.c | 9 +- arch/s390/kernel/topology.c | 6 + arch/s390/numa/mode_emu.c | 3 + arch/s390/numa/numa.c | 6 +- arch/s390/numa/toptree.c | 8 +- arch/sh/boards/mach-ap325rxa/setup.c | 5 +- arch/sh/boards/mach-ecovec24/setup.c | 10 +- arch/sh/boards/mach-kfr2r09/setup.c | 5 +- arch/sh/boards/mach-migor/setup.c | 5 +- arch/sh/boards/mach-se/7724/setup.c | 10 +- arch/sh/kernel/machine_kexec.c | 3 +- arch/sh/mm/init.c | 8 +- arch/sh/mm/numa.c | 4 + arch/sparc/kernel/prom_32.c | 6 +- arch/sparc/kernel/setup_64.c | 6 + arch/sparc/kernel/smp_64.c | 12 ++ arch/sparc/mm/init_32.c | 2 +- arch/sparc/mm/init_64.c | 11 ++ arch/sparc/mm/srmmu.c | 18 ++- arch/um/drivers/net_kern.c | 3 + arch/um/drivers/vector_kern.c | 3 + arch/um/kernel/initrd.c | 2 + arch/um/kernel/mem.c | 16 ++ arch/unicore32/kernel/setup.c | 4 + arch/unicore32/mm/mmu.c | 15 +- arch/x86/kernel/acpi/boot.c | 3 + arch/x86/kernel/apic/io_apic.c | 5 + arch/x86/kernel/e820.c | 5 +- arch/x86/kernel/setup_percpu.c | 10 +- arch/x86/mm/kasan_init_64.c | 14 +- arch/x86/mm/numa.c | 12 +- arch/x86/platform/olpc/olpc_dt.c | 3 + arch/x86/xen/p2m.c | 11 +- arch/xtensa/mm/kasan_init.c | 10 +- arch/xtensa/mm/mmu.c | 3 + drivers/clk/ti/clk.c | 3 + drivers/firmware/memmap.c | 2 +- drivers/macintosh/smu.c | 5 +- drivers/of/fdt.c | 8 +- drivers/of/of_reserved_mem.c | 7 +- drivers/of/unittest.c | 8 +- drivers/usb/early/xhci-dbc.c | 2 +- drivers/xen/swiotlb-xen.c | 7 +- include/linux/memblock.h | 59 +------ init/main.c | 26 +++- kernel/dma/swiotlb.c | 21 ++- kernel/power/snapshot.c | 3 + kernel/printk/printk.c | 17 +- lib/cpumask.c | 3 + mm/cma.c | 10 +- mm/kasan/init.c | 10 +- mm/memblock.c | 249 ++++++++++-------------------- mm/page_alloc.c | 10 +- mm/page_ext.c | 2 +- mm/percpu.c | 84 +++++++--- mm/sparse.c | 25 ++- 122 files changed, 872 insertions(+), 415 deletions(-) -- 2.7.4