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2020-08-14mm: add thp_orderMatthew Wilcox (Oracle)
This function returns the order of a transparent huge page. It compiles to 0 if CONFIG_TRANSPARENT_HUGEPAGE is disabled. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: William Kucharski <william.kucharski@oracle.com> Reviewed-by: Zi Yan <ziy@nvidia.com> Cc: David Hildenbrand <david@redhat.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Link: http://lkml.kernel.org/r/20200629151959.15779-4-willy@infradead.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-14mm: move page-flags include to top of fileMatthew Wilcox (Oracle)
Give up on the notion that we can remove page-flags.h from mm.h. There are currently 14 inline functions which use a PageFoo function. Also, two of the files directly included by mm.h include page-flags.h themselves, and there are probably more indirect inclusions. So just include it at the top like any other header file. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: William Kucharski <william.kucharski@oracle.com> Reviewed-by: Zi Yan <ziy@nvidia.com> Cc: David Hildenbrand <david@redhat.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Link: http://lkml.kernel.org/r/20200629151959.15779-3-willy@infradead.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-14mm: store compound_nr as well as compound_orderMatthew Wilcox (Oracle)
Patch series "THP prep patches". These are some generic cleanups and improvements, which I would like merged into mmotm soon. The first one should be a performance improvement for all users of compound pages, and the others are aimed at getting code to compile away when CONFIG_TRANSPARENT_HUGEPAGE is disabled (ie small systems). Also better documented / less confusing than the current prefix mixture of compound, hpage and thp. This patch (of 7): This removes a few instructions from functions which need to know how many pages are in a compound page. The storage used is either page->mapping on 64-bit or page->index on 32-bit. Both of these are fine to overlay on tail pages. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: William Kucharski <william.kucharski@oracle.com> Reviewed-by: Zi Yan <ziy@nvidia.com> Cc: David Hildenbrand <david@redhat.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Link: http://lkml.kernel.org/r/20200629151959.15779-1-willy@infradead.org Link: http://lkml.kernel.org/r/20200629151959.15779-2-willy@infradead.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-14mailmap: add entry for Greg KurzGreg Kurz
I had stopped using gkurz@linux.vnet.ibm.com a while back already but this email address was shutdown last June when I quit IBM. It's about time to map it to groug@kaod.org. Signed-off-by: Greg Kurz <groug@kaod.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/159724692879.76040.4938578139173154028.stgit@bahia.lan Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-14selftests/exec: add file type errno testsKees Cook
Make sure execve() returns the expected errno values for non-regular files. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Marc Zyngier <maz@kernel.org> Link: http://lkml.kernel.org/r/20200813231723.2725102-3-keescook@chromium.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-14exec: restore EACCES of S_ISDIR execve()Kees Cook
Patch series "Fix S_ISDIR execve() errno". Fix an errno change for execve() of directories, noticed by Marc Zyngier. Along with the fix, include a regression test to avoid seeing this return in the future. This patch (of 2): The return code for attempting to execute a directory has always been EACCES. Adjust the S_ISDIR exec test to reflect the old errno instead of the general EISDIR for other kinds of "open" attempts on directories. Fixes: 633fb6ac3980 ("exec: move S_ISREG() check earlier") Reported-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Tested-by: Greg Kroah-Hartman <gregkh@android.com> Reviewed-by: Greg Kroah-Hartman <gregkh@google.com> Link: http://lkml.kernel.org/r/20200813231723.2725102-2-keescook@chromium.org Link: https://lore.kernel.org/lkml/20200813151305.6191993b@why Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-14lz4: fix kernel decompression speedNick Terrell
This patch replaces all memcpy() calls with LZ4_memcpy() which calls __builtin_memcpy() so the compiler can inline it. LZ4 relies heavily on memcpy() with a constant size being inlined. In x86 and i386 pre-boot environments memcpy() cannot be inlined because memcpy() doesn't get defined as __builtin_memcpy(). An equivalent patch has been applied upstream so that the next import won't lose this change [1]. I've measured the kernel decompression speed using QEMU before and after this patch for the x86_64 and i386 architectures. The speed-up is about 10x as shown below. Code Arch Kernel Size Time Speed v5.8 x86_64 11504832 B 148 ms 79 MB/s patch x86_64 11503872 B 13 ms 885 MB/s v5.8 i386 9621216 B 91 ms 106 MB/s patch i386 9620224 B 10 ms 962 MB/s I also measured the time to decompress the initramfs on x86_64, i386, and arm. All three show the same decompression speed before and after, as expected. [1] https://github.com/lz4/lz4/pull/890 Signed-off-by: Nick Terrell <terrelln@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Yann Collet <yann.collet.73@gmail.com> Cc: Gao Xiang <gaoxiang25@huawei.com> Cc: Sven Schmidt <4sschmid@informatik.uni-hamburg.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Arvind Sankar <nivedita@alum.mit.edu> Link: http://lkml.kernel.org/r/20200803194022.2966806-1-nickrterrell@gmail.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-14Revert "mm/vmstat.c: do not show lowmem reserve protection information of ↵Baoquan He
empty zone" This reverts commit 26e7deadaae175. Sonny reported that one of their tests started failing on the latest kernel on their Chrome OS platform. The root cause is that the above commit removed the protection line of empty zone, while the parser used in the test relies on the protection line to mark the end of each zone. Let's revert it to avoid breaking userspace testing or applications. Fixes: 26e7deadaae175 ("mm/vmstat.c: do not show lowmem reserve protection information of empty zone)" Reported-by: Sonny Rao <sonnyrao@chromium.org> Signed-off-by: Baoquan He <bhe@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: David Hildenbrand <david@redhat.com> Acked-by: David Rientjes <rientjes@google.com> Cc: <stable@vger.kernel.org> [5.8.x] Link: http://lkml.kernel.org/r/20200811075412.12872-1-bhe@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-14asm-generic: pgalloc.h: use correct #ifdef to enable pud_alloc_one()Mike Rapoport
The #ifdef statement that guards the generic version of pud_alloc_one() by mistake used __HAVE_ARCH_PUD_FREE instead of __HAVE_ARCH_PUD_ALLOC_ONE. Fix it. Fixes: d9e8b929670b ("asm-generic: pgalloc: provide generic pud_alloc_one() and pud_free_one()") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/20200812191415.GE163101@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-14sh: landisk: Add missing initialization of sh_io_port_baseGeert Uytterhoeven
The Landisk setup code maps the CF IDE area using ioremap_prot(), and passes the resulting virtual addresses to the pata_platform driver, disguising them as I/O port addresses. Hence the pata_platform driver translates them again using ioport_map(). As CONFIG_GENERIC_IOMAP=n, and CONFIG_HAS_IOPORT_MAP=y, the SuperH-specific mapping code in arch/sh/kernel/ioport.c translates I/O port addresses to virtual addresses by adding sh_io_port_base, which defaults to -1, thus breaking the assumption of an identity mapping. Fix this by setting sh_io_port_base to zero. Fixes: 37b7a97884ba64bf ("sh: machvec IO death.") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: bring syscall_set_return_value in line with other architecturesMichael Karcher
Other architectures expect that syscall_set_return_value gets an already negative value as error. That's also what kernel/seccomp.c provides. Signed-off-by: Michael Karcher <kernel@mkarcher.dialup.fu-berlin.de> Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: Add SECCOMP_FILTERMichael Karcher
Port sh to use the new SECCOMP_FILTER code. Signed-off-by: Michael Karcher <kernel@mkarcher.dialup.fu-berlin.de> Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: Rearrange blocks in entry-common.SMichael Karcher
This avoids out-of-range jumps that get auto-replaced by the assembler and prepares for the changes needed to implement SECCOMP_FILTER cleanly. Signed-off-by: Michael Karcher <kernel@mkarcher.dialup.fu-berlin.de> Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: switch to copy_thread_tls()Christian Brauner
Use the copy_thread_tls() calling convention which passes tls through a register. This is required so we can remove the copy_thread{_tls}() split and remove the HAVE_COPY_THREAD_TLS macro. Cc: Rich Felker <dalias@libc.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: linux-sh@vger.kernel.org Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: use the generic dma coherent remap allocatorChristoph Hellwig
This switches to using common code for the DMA allocations, including potential use of the CMA allocator if configured. Switching to the generic code enables DMA allocations from atomic context, which is required by the DMA API documentation, and also adds various other minor features drivers start relying upon. It also makes sure we have on tested code base for all architectures that require uncached pte bits for coherent DMA allocations. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: don't allow non-coherent DMA for NOMMUChristoph Hellwig
The code handling non-coherent DMA depends on being able to remap code as non-cached. But that can't be done without an MMU, so using this option on NOMMU builds is broken. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14dma-mapping: consolidate the NO_DMA definition in kernel/dma/KconfigChristoph Hellwig
Have a single definition that architetures can select. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: unexport register_trapped_io and match_trapped_io_handlerChristoph Hellwig
Both functions are only used by compiled in core code. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: don't include <asm/io_trapped.h> in <asm/io.h>Christoph Hellwig
No need to expose the details of trapped I/O to drivers. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: move the ioremap implementation out of lineChristoph Hellwig
Move the internal implementation details of ioremap out of line, no need to expose any of this to drivers for a slow path API. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: move ioremap_fixed details out of <asm/io.h>Christoph Hellwig
ioremap_fixed is an internal implementation detail and should not be exposed to drivers. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: remove __KERNEL__ ifdefs from non-UAPI headersChristoph Hellwig
There is no point in having __KERNEL__ ifdefs in headers not exported to userspace. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: sort the selects for SUPERH alphabeticallyChristoph Hellwig
Ensure there is an order for the selects. Also remove a duplicate one. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: remove -Werror from MakefilesChristoph Hellwig
The sh build is full of warnings when building with gcc 9.2.1. While fixing those would be great, at least avoid failing the build. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: Replace HTTP links with HTTPS onesAlexander A. Klimov
Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14arch/sh/configs: remove obsolete CONFIG_SOC_CAMERA*Hans Verkuil
Drop all configs with the CONFIG_SOC_CAMERA prefix since those have been removed. SOC_CAMERA support for the sh architecture was removed a long time ago. Drop it from the configs. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: stacktrace: Remove stacktrace_ops.stack()Geert Uytterhoeven
The SH implementation never called stacktrace_ops.stack(). Presumably this was copied from the x86 implementation. Hence remove the method, and all implementations (most of them are dummies). Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: machvec: Modernize printing of kernel messagesGeert Uytterhoeven
- Convert from printk() to pr_*(), - Add missing continuations. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: pci: Modernize printing of kernel messagesGeert Uytterhoeven
- Convert from printk() to pr_*(), - Add missing continuations, - Join broken messages. Note that printk(KERN_DEBUG ...) is retained, to preserve behavior (pr_debug() is a dummy if DEBUG is not defined). Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: sh2007: Modernize printing of kernel messagesGeert Uytterhoeven
- Convert from printk() to pr_*(), - Add missing continuation. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: process: Fix broken lines in register dumpsGeert Uytterhoeven
Rejoin the broken lines by using pr_cont(). Convert the remaining printk() calls to pr_*() while at it. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: dump_stack: Fix broken lines and ptrval in calltrace dumpsGeert Uytterhoeven
Rejoin the broken lines by dropping the log level parameters and using pr_cont(). Use "%px" to print sensible addresses in call traces. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: kernel: disassemble: Fix broken lines in disassembly dumpsGeert Uytterhoeven
Rejoin the broken lines by using pr_cont(). Convert the remaining printk() calls to pr_*() while at it. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14Revert "sh: remove needless printk()"Geert Uytterhoeven
This reverts commit 8b92f34877225c8eb85e3ab7f1177fc248ba26d0. "data" became the log level in commit 539e786cc37ee5cb ("sh: add loglvl to show_trace()"), so we do need to keep the printk() before the continuation in print_trace_address(). Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14Revert "sh: add loglvl to printk_address()"Geert Uytterhoeven
This reverts commit 2deebe4d56d638269a4a728086d64de5734b460a. printk_address() is always used as a continuation of the previous logging, hence it should not include a log level. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: fault: Fix duplicate printing of "PC:"Geert Uytterhoeven
Somewhere along the patch handling path, both the old "printk(KERN_ALERT ....)" and the new "pr_alert(...)" were retained, leading to the duplicate printing of "PC:". Drop the old one. Fixes: eaabf98b0932a540 ("sh: fault: modernize printing of kernel messages") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14input: i8042 - Remove special Cayman handlingGeert Uytterhoeven
As of commit 37744feebc086908 ("sh: remove sh5 support"), support for the SH5-based Cayman platform can no longer be selected. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: Remove SH5-based Cayman platformGeert Uytterhoeven
Since the removal of core support for SH5, Cayman support can no longer be selected. Fixes: 37744feebc086908 ("sh: remove sh5 support") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14arch: sh: smc37c93x: fix spelling mistakeFlavio Suligoi
Fix typo: "triger" --> "trigger" Signed-off-by: Flavio Suligoi <f.suligoi@asem.it> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14Revert "sh: add missing EXPORT_SYMBOL() for __delay"Geert Uytterhoeven
This reverts commit d1f56f318d234fc5db230af2f3e0088f689ab3c0. __delay() is an internal implementation detail on several architectures. Drivers should not call __delay() directly, as it has non-standardized semantics, or may not even exist. Hence there is no need to export __delay() to modules. See also include/asm-generic/delay.h: /* Undefined functions to get compile-time errors */ ... extern void __delay(unsigned long loops); Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: Implement __get_user_u64() required for 64-bit get_user()John Paul Adrian Glaubitz
Trying to build the kernel with CONFIG_INFINIBAND_USER_ACCESS enabled fails ERROR: "__get_user_unknown" [drivers/infiniband/core/ib_uverbs.ko] undefined! with on SH since the kernel misses a 64-bit implementation of get_user(). Implement the missing 64-bit get_user() as __get_user_u64(), matching the already existing __put_user_u64() which implements the 64-bit put_user(). Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Acked-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: remove call to memset after dma_alloc_coherentChen Zhou
Function dma_alloc_coherent use in buf already zeroes out memory, so memset is not needed. Signed-off-by: Chen Zhou <chenzhou10@huawei.com> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14sh: Fix unneeded constructor in page table allocationMatthew Wilcox (Oracle)
The pgd kmem_cache allocation both specified __GFP_ZERO and had a constructor which makes no sense. Remove __GFP_ZERO and zero the user parts of the pgd explicitly. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Rich Felker <dalias@libc.org>
2020-08-14riscv: Setup exception vector for nommu platformQiu Wenbo
Exception vector is missing on nommu platform and that is an issue. This patch is tested in Sipeed Maix Bit Dev Board. Fixes: 79b1feba5455 ("RISC-V: Setup exception vector early") Suggested-by: Anup Patel <anup@brainfault.org> Suggested-by: Atish Patra <atishp@atishpatra.org> Signed-off-by: Qiu Wenbo <qiuwenbo@phytium.com.cn> Reviewed-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup@brainfault.org> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2020-08-14Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds
Pull more SCSI updates from James Bottomley: "This is the set of patches which arrived too late to stabilise in -next for the first pull. It's really just an lpfc driver update and an assortment of minor fixes, all in drivers. The only core update is to the zone block device driver, which isn't the one most people use" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: lpfc: Update lpfc version to 12.8.0.3 scsi: lpfc: Fix LUN loss after cable pull scsi: lpfc: Fix validation of bsg reply lengths scsi: lpfc: Fix retry of PRLI when status indicates its unsupported scsi: lpfc: Fix oops when unloading driver while running mds diags scsi: lpfc: Fix RSCN timeout due to incorrect gidft counter scsi: lpfc: Fix no message shown for lpfc_hdw_queue out of range value scsi: lpfc: Fix FCoE speed reporting scsi: lpfc: Add missing misc_deregister() for lpfc_init() scsi: lpfc: nvmet: Avoid hang / use-after-free again when destroying targetport scsi: scsi_transport_sas: Add spaces around binary operator "|" scsi: sd_zbc: Improve zone revalidation scsi: libfc: Free skb in fc_disc_gpn_id_resp() for valid cases scsi: fcoe: Memory leak fix in fcoe_sysfs_fcf_del() scsi: target: Make iscsit_register_transport() return void
2020-08-14Merge tag 'pwm/for-5.9-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm Pull pwm updates from Thierry Reding: "The majority of this batch is conversion of the PWM period and duty cycle to 64-bit unsigned integers, which is required so that some types of hardware can generate the full range of signals that they're capable of. The remainder is mostly minor fixes and cleanups" * tag 'pwm/for-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: pwm: bcm-iproc: handle clk_get_rate() return pwm: Replace HTTP links with HTTPS ones pwm: omap-dmtimer: Repair pwm_omap_dmtimer_chip's broken kerneldoc header pwm: mediatek: Provide missing kerneldoc description for 'soc' arg pwm: bcm-kona: Remove impossible comparison when validating duty cycle pwm: bcm-iproc: Remove impossible comparison when validating duty cycle pwm: iqs620a: Use lowercase hexadecimal literals for consistency pwm: Convert period and duty cycle to u64 clk: pwm: Use 64-bit division function backlight: pwm_bl: Use 64-bit division function pwm: sun4i: Use nsecs_to_jiffies to avoid a division pwm: sifive: Use 64-bit division macro pwm: iqs620a: Use 64-bit division pwm: imx27: Use 64-bit division macro pwm: imx-tpm: Use 64-bit division macro pwm: clps711x: Use 64-bit division macro hwmon: pwm-fan: Use 64-bit division macro drm/i915: Use 64-bit division macro
2020-08-14Merge tag 'sound-fix-5.9-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "All device-specific small fixes and quirks mostly for usual suspects, USB-audio and HD-audio" * tag 'sound-fix-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: echoaudio: Fix potential Oops in snd_echo_resume() ALSA: hda/hdmi: Use force connectivity quirk on another HP desktop ALSA: hda/realtek - Fix unused variable warning ALSA: hda - reverse the setting value in the micmute_led_set ALSA: echoaduio: Drop superfluous volatile modifier ALSA: usb-audio: Disable Lenovo P620 Rear line-in volume control ALSA: usb-audio: add quirk for Pioneer DDJ-RB ALSA: usb-audio: work around streaming quirk for MacroSilicon MS2109 ALSA: hda - fix the micmute led status for Lenovo ThinkCentre AIO ALSA: usb-audio: fix overeager device match for MacroSilicon MS2109 ALSA: hda/realtek: Fix pin default on Intel NUC 8 Rugged ALSA: usb-audio: Creative USB X-Fi Pro SB1095 volume knob support ALSA: usb-audio: fix spelling mistake "buss" -> "bus"
2020-08-14dma-debug: remove debug_dma_assert_idle() functionLinus Torvalds
This remoes the code from the COW path to call debug_dma_assert_idle(), which was added many years ago. Google shows that it hasn't caught anything in the 6+ years we've had it apart from a false positive, and Hugh just noticed how it had a very unfortunate spinlock serialization in the COW path. He fixed that issue the previous commit (a85ffd59bd36: "dma-debug: fix debug_dma_assert_idle(), use rcu_read_lock()"), but let's see if anybody even notices when we remove this function entirely. NOTE! We keep the dma tracking infrastructure that was added by the commit that introduced it. Partly to make it easier to resurrect this debug code if we ever deside to, and partly because that tracking by pfn and offset looks quite reasonable. The problem with this debug code was simply that it was expensive and didn't seem worth it, not that it was wrong per se. Acked-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-14dma-debug: fix debug_dma_assert_idle(), use rcu_read_lock()Hugh Dickins
Since commit 2a9127fcf229 ("mm: rewrite wait_on_page_bit_common() logic") improved unlock_page(), it has become more noticeable how cow_user_page() in a kernel with CONFIG_DMA_API_DEBUG=y can create and suffer from heavy contention on DMA debug's radix_lock in debug_dma_assert_idle(). It is only doing a lookup: use rcu_read_lock() and rcu_read_unlock() instead; though that does require the static ents[] to be moved onstack... ...but, hold on, isn't that radix_tree_gang_lookup() and loop doing quite the wrong thing: searching CACHELINES_PER_PAGE entries for an exact match with the first cacheline of the page in question? radix_tree_gang_lookup() is the right tool for the job, but we need nothing more than to check the first entry it can find, reporting if that falls anywhere within the page. (Is RCU safe here? As safe as using the spinlock was. The entries are never freed, so don't need to be freed by RCU. They may be reused, and there is a faint chance of a race, with an offending entry reused while printing its error info; but the spinlock did not prevent that either, and I agree that it's not worth worrying about. ] [ Side noe: this patch is a clear improvement to the status quo, but the next patch will be removing this debug function entirely. But just in case we decide we want to resurrect the debugging code some day, I'm first applying this improvement patch so that it doesn't get lost - Linus ] Fixes: 3b7a6418c749 ("dma debug: account for cachelines and read-only mappings in overlap tracking") Signed-off-by: Hugh Dickins <hughd@google.com> Acked-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-14Merge tag 'timers-urgent-2020-08-14' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timekeeping updates from Thomas Gleixner: "A set of timekeeping/VDSO updates: - Preparatory work to allow S390 to switch over to the generic VDSO implementation. S390 requires that the VDSO data pointer is handed in to the counter read function when time namespace support is enabled. Adding the pointer is a NOOP for all other architectures because the compiler is supposed to optimize that out when it is unused in the architecture specific inline. The change also solved a similar problem for MIPS which fortunately has time namespaces not yet enabled. S390 needs to update clock related VDSO data independent of the timekeeping updates. This was solved so far with yet another sequence counter in the S390 implementation. A better solution is to utilize the already existing VDSO sequence count for this. The core code now exposes helper functions which allow to serialize against the timekeeper code and against concurrent readers. S390 needs extra data for their clock readout function. The initial common VDSO data structure did not provide a way to add that. It now has an embedded architecture specific struct embedded which defaults to an empty struct. Doing this now avoids tree dependencies and conflicts post rc1 and allows all other architectures which work on generic VDSO support to work from a common upstream base. - A trivial comment fix" * tag 'timers-urgent-2020-08-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: time: Delete repeated words in comments lib/vdso: Allow to add architecture-specific vdso data timekeeping/vsyscall: Provide vdso_update_begin/end() vdso/treewide: Add vdso_data pointer argument to __arch_get_hw_counter()
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