- 14 Jul, 2023 21 commits
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Randy Dunlap authored
Add kernel-doc for all APIs that do not already have it. Signed-off-by:
Randy Dunlap <rdunlap@infradead.org> Cc: John Stultz <jstultz@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Stephen Boyd <sboyd@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Acked-by:
John Stultz <jstultz@google.com> Signed-off-by:
Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20230704052405.5089-3-rdunlap@infradead.org
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Randy Dunlap authored
Add kernel-doc notation in <linux/jiffies.h> for interfaces that don't already have it (i.e. most interfaces). Fix some formatting and typos in other comments. Signed-off-by:
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Randy Dunlap authored
Give time & timer APIs their own section and begin adding entries to that section. Move hrtimers immediately after this new section so that they are all together. Signed-off-by:
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Fabio M. De Francesco authored
The differences between kmap_local_page() and kmap_local_folio() consist only in the first taking a pointer to a page and the second taking two arguments, a pointer to a folio and the byte offset within the folio which identifies the page. The two API's can be explained at the same time in the "Temporary Virtual Mappings" section of the Highmem's documentation. Add information about kmap_local_folio() in the same subsection that explains kmap_local_page(). Cc: Andrew Morton <akpm@linux-foundation.org> Reviewed-by:
Ira Weiny <ira.weiny@intel.com> Reviewed-by:
Mike Rapoport (IBM) <rppt@kernel.org> Signed-off-by:
Fabio M. De Francesco <fmdefrancesco@gmail.com> Signed-off-by:
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Avadhut Naik authored
Translate Documentation/process/researcher-guidelines.rst into Spanish Signed-off-by:
Avadhut Naik <avadhut.naik@amd.com> Reviewed-By:
Carlos Bilbao <carlos.bilbao@amd.com> [jc: removed unneeded label at the top] Signed-off-by:
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Costa Shulyupin authored
to make the page more organized as requested Signed-off-by:
Costa Shulyupin <costa.shul@redhat.com> Signed-off-by:
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Christophe JAILLET authored
vmalloc() has a 2-factor form. It is vmalloc_array(). So use another function as an example. Signed-off-by:
Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by:
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Randy Dunlap authored
Add bus, class, and device data structures and enum constants to the Driver-Model Structures section and add function interfaces to the Device Drivers Base section of the Device drivers infrastructure chapter. Signed-off-by:
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Randy Dunlap authored
Correct 2 uses of "it's" to the possessive "its" as needed. Signed-off-by:
Darrick J. Wong <djwong@kernel.org> Signed-off-by:
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Randy Dunlap authored
Use the 'constant' indicator '%' in the examples for the Return: values syntax. This can help encourage people to use it. Signed-off-by:
Steven Rostedt <rostedt@goodmis.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Link: https://lore.kernel.org/lkml/20221121154358.36856ca6@gandalf.local.home/Acked-by:
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Randy Dunlap authored
Jesse mentioned that gconfig is missing from the top of the kconfig.rst file, so add it for completeness. Signed-off-by:
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Rick Wertenbroek authored
Add missing address-of (&) operator in pseudo-code. Signed-off-by:
Rick Wertenbroek <rick.wertenbroek@gmail.com> Signed-off-by:
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Jonathan Corbet authored
Hu evidently wrote his two patches in separate branches, with the effect that they conflict with each other. I've applied them in the same way to let "git merge" sort it out.
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Hu Haowen authored
Update zh_TW's index.rst to the version of commit 0c7b4366 ("docs: Rewrite the front page") with some reference from commit f4bf1cd4 ("docs: move asm-annotations.rst into core-api") and commit eef24f70 ("docs/zh_CN: Rewrite the Chinese translation front page"). Signed-off-by:
Hu Haowen <src.res.211@gmail.com> Signed-off-by:
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Hu Haowen authored
The previous email address was abandoned due to some reasons by myself, and thus shift the email contents mentioned from the old email address (src.res@email.cn) to the current version (src.res.211@gmail.com). Signed-off-by:
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Tiezhu Yang authored
Run the refresh script [1] to document the recent feature additions. [1] Documentation/features/scripts/features-refresh.sh Signed-off-by:
Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by:
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Tiezhu Yang authored
ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT selects ARCH_HAS_ELF_RANDOMIZE, so add ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT as another Kconfig check for ELF-ASLR feature, then the refresh script can be used to handle this case for all archs. Co-developed-by:
Xi Ruoyao <xry111@xry111.site> Signed-off-by:
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Jakub Kicinski authored
The example and the git hook use HTTPS but the text for some reason links to the non-SSL version. Signed-off-by:
Jakub Kicinski <kuba@kernel.org> Signed-off-by:
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Jonathan Corbet authored
Get rid of some markup cruft and unneeded labels in a pair of maintainer's manual documents. No wording changes. Signed-off-by: -
Jakub Kicinski authored
The documentation talks about -u and how to configure the default key. It does not mention that once the default key is set one should use the -s flag. Which is likely what most people end up using. Signed-off-by:
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Jakub Kicinski authored
A handful of people got caught out by the recent changes in git which changed the format of Message-ID and broke our recommended applyhook for adding lore links. This was fixed in the docs by commit 2bb19e74 ("Documentation: update git configuration for Link: tag") but it seems like few people have noticed. Add maintainer directory to the process entry so that workflows@ gets CCed. Signed-off-by:
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- 09 Jul, 2023 10 commits
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Linus Torvalds authored
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Linus Torvalds authored
We just sorted the entries and fields last release, so just out of a perverse sense of curiosity, I decided to see if we can keep things ordered for even just one release. The answer is "No. No we cannot". I suggest that all kernel developers will need weekly training sessions, involving a lot of Big Bird and Sesame Street. And at the yearly maintainer summit, we will all sing the alphabet song together. I doubt I will keep doing this. At some point "perverse sense of curiosity" turns into just a cold dark place filled with sadness and despair. Repeats: 80e62bc8 ("MAINTAINERS: re-sort all entries and fields") Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git.infradead.org/users/hch/dma-mappingLinus Torvalds authored
Pull dma-mapping fixes from Christoph Hellwig: - swiotlb area sizing fixes (Petr Tesarik) * tag 'dma-mapping-6.5-2023-07-09' of git://git.infradead.org/users/hch/dma-mapping: swiotlb: reduce the number of areas to match actual memory pool size swiotlb: always set the number of areas before allocating the pool
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq update from Borislav Petkov: - Optimize IRQ domain's name assignment * tag 'irq_urgent_for_v6.5_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqdomain: Use return value of strreplace()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fpu fix from Borislav Petkov: - Do FPU AP initialization on Xen PV too which got missed by the recent boot reordering work * tag 'x86_urgent_for_v6.5_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/xen: Fix secondary processors' FPU initialization
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fix from Thomas Gleixner: "A single fix for the mechanism to park CPUs with an INIT IPI. On shutdown or kexec, the kernel tries to park the non-boot CPUs with an INIT IPI. But the same code path is also used by the crash utility. If the CPU which panics is not the boot CPU then it sends an INIT IPI to the boot CPU which resets the machine. Prevent this by validating that the CPU which runs the stop mechanism is the boot CPU. If not, leave the other CPUs in HLT" * tag 'x86-core-2023-07-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/smp: Don't send INIT to boot CPU
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git://git.kernel.org/pub/scm/linux/kernel/git/mips/linuxLinus Torvalds authored
Pull MIPS fixes from Thomas Bogendoerfer: - fixes for KVM - fix for loongson build and cpu probing - DT fixes * tag 'mips_6.5_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: MIPS: kvm: Fix build error with KVM_MIPS_DEBUG_COP0_COUNTERS enabled MIPS: dts: add missing space before { MIPS: Loongson: Fix build error when make modules_install MIPS: KVM: Fix NULL pointer dereference MIPS: Loongson: Fix cpu_probe_loongson() again
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git://git.kernel.org/pub/scm/fs/xfs/xfs-linuxLinus Torvalds authored
Pull xfs fix from Darrick Wong: "Nothing exciting here, just getting rid of a gcc warning that I got tired of seeing when I turn on gcov" * tag 'xfs-6.5-merge-6' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: xfs: fix uninit warning in xfs_growfs_data
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git://git.samba.org/sfrench/cifs-2.6Linus Torvalds authored
Pull more smb client updates from Steve French: - fix potential use after free in unmount - minor cleanup - add worker to cleanup stale directory leases * tag '6.5-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6: cifs: Add a laundromat thread for cached directories smb: client: remove redundant pointer 'server' cifs: fix session state transition to avoid use-after-free issue
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https://github.com/jonmason/ntbLinus Torvalds authored
Pull NTB updates from Jon Mason: "Fixes for pci_clean_master, error handling in driver inits, and various other issues/bugs" * tag 'ntb-6.5' of https://github.com/jonmason/ntb: ntb: hw: amd: Fix debugfs_create_dir error checking ntb.rst: Fix copy and paste error ntb_netdev: Fix module_init problem ntb: intel: Remove redundant pci_clear_master ntb: epf: Remove redundant pci_clear_master ntb_hw_amd: Remove redundant pci_clear_master ntb: idt: drop redundant pci_enable_pcie_error_reporting() MAINTAINERS: git://github -> https://github.com for jonmason NTB: EPF: fix possible memory leak in pci_vntb_probe() NTB: ntb_tool: Add check for devm_kcalloc NTB: ntb_transport: fix possible memory leak while device_register() fails ntb: intel: Fix error handling in intel_ntb_pci_driver_init() NTB: amd: Fix error handling in amd_ntb_pci_driver_init() ntb: idt: Fix error handling in idt_pci_driver_init()
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- 08 Jul, 2023 9 commits
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Hugh Dickins authored
Lockdep is certainly right to complain about (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_write+0x2d/0x3f but task is already holding lock: (&mapping->i_mmap_rwsem){+.+.}-{3:3}, at: mmap_region+0x4dc/0x6db Invert those to the usual ordering. Fixes: 33313a74 ("mm: lock newly mapped VMA which can be modified after it becomes visible") Cc: stable@vger.kernel.org Signed-off-by:Hugh Dickins <hughd@google.com> Tested-by:
Suren Baghdasaryan <surenb@google.com> Signed-off-by:
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Linus Torvalds authored
Merge tag 'mm-hotfixes-stable-2023-07-08-10-43' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull hotfixes from Andrew Morton: "16 hotfixes. Six are cc:stable and the remainder address post-6.4 issues" The merge undoes the disabling of the CONFIG_PER_VMA_LOCK feature, since it was all hopefully fixed in mainline. * tag 'mm-hotfixes-stable-2023-07-08-10-43' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: lib: dhry: fix sleeping allocations inside non-preemptable section kasan, slub: fix HW_TAGS zeroing with slub_debug kasan: fix type cast in memory_is_poisoned_n mailmap: add entries for Heiko Stuebner mailmap: update manpage link bootmem: remove the vmemmap pages from kmemleak in free_bootmem_page MAINTAINERS: add linux-next info mailmap: add Markus Schneider-Pargmann writeback: account the number of pages written back mm: call arch_swap_restore() from do_swap_page() squashfs: fix cache race with migration mm/hugetlb.c: fix a bug within a BUG(): inconsistent pte comparison docs: update ocfs2-devel mailing list address MAINTAINERS: update ocfs2-devel mailing list address mm: disable CONFIG_PER_VMA_LOCK until its fixed fork: lock VMAs of the parent process when forking
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Suren Baghdasaryan authored
When forking a child process, the parent write-protects anonymous pages and COW-shares them with the child being forked using copy_present_pte(). We must not take any concurrent page faults on the source vma's as they are being processed, as we expect both the vma and the pte's behind it to be stable. For example, the anon_vma_fork() expects the parents vma->anon_vma to not change during the vma copy. A concurrent page fault on a page newly marked read-only by the page copy might trigger wp_page_copy() and a anon_vma_prepare(vma) on the source vma, defeating the anon_vma_clone() that wasn't done because the parent vma originally didn't have an anon_vma, but we now might end up copying a pte entry for a page that has one. Before the per-vma lock based changes, the mmap_lock guaranteed exclusion with concurrent page faults. But now we need to do a vma_start_write() to make sure no concurrent faults happen on this vma while it is being processed. This fix can potentially regress some fork-heavy workloads. Kernel build time did not show noticeable regression on a 56-core machine while a stress test mapping 10000 VMAs and forking 5000 times in a tight loop shows ~5% regression. If such fork time regression is unacceptable, disabling CONFIG_PER_VMA_LOCK should restore its performance. Further optimizations are possible if this regression proves to be problematic. Suggested-by:
David Hildenbrand <david@redhat.com> Reported-by:
Jiri Slaby <jirislaby@kernel.org> Closes: https://lore.kernel.org/all/dbdef34c-3a07-5951-e1ae-e9c6e3cdf51b@kernel.org/Reported-by:
Holger Hoffstätte <holger@applied-asynchrony.com> Closes: https://lore.kernel.org/all/b198d649-f4bf-b971-31d0-e8433ec2a34c@applied-asynchrony.com/Reported-by:
Jacob Young <jacobly.alt@gmail.com> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217624 Fixes: 0bff0aae ("x86/mm: try VMA lock-based page fault handling first") Cc: stable@vger.kernel.org Signed-off-by:
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Suren Baghdasaryan authored
mmap_region adds a newly created VMA into VMA tree and might modify it afterwards before dropping the mmap_lock. This poses a problem for page faults handled under per-VMA locks because they don't take the mmap_lock and can stumble on this VMA while it's still being modified. Currently this does not pose a problem since post-addition modifications are done only for file-backed VMAs, which are not handled under per-VMA lock. However, once support for handling file-backed page faults with per-VMA locks is added, this will become a race. Fix this by write-locking the VMA before inserting it into the VMA tree. Other places where a new VMA is added into VMA tree do not modify it after the insertion, so do not need the same locking. Cc: stable@vger.kernel.org Signed-off-by:
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Suren Baghdasaryan authored
With recent changes necessitating mmap_lock to be held for write while expanding a stack, per-VMA locks should follow the same rules and be write-locked to prevent page faults into the VMA being expanded. Add the necessary locking. Cc: stable@vger.kernel.org Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull more SCSI updates from James Bottomley: "A few late arriving patches that missed the initial pull request. It's mostly bug fixes (the dt-bindings is a fix for the initial pull)" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: ufs: core: Remove unused function declaration scsi: target: docs: Remove tcm_mod_builder.py scsi: target: iblock: Quiet bool conversion warning with pr_preempt use scsi: dt-bindings: ufs: qcom: Fix ICE phandle scsi: core: Simplify scsi_cdl_check_cmd() scsi: isci: Fix comment typo scsi: smartpqi: Replace one-element arrays with flexible-array members scsi: target: tcmu: Replace strlcpy() with strscpy() scsi: ncr53c8xx: Replace strlcpy() with strscpy() scsi: lpfc: Fix lpfc_name struct packing
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linuxLinus Torvalds authored
Pull more i2c updates from Wolfram Sang: - xiic patch should have been in the original pull but slipped through - mpc patch fixes a build regression - nomadik cleanup * tag 'i2c-for-6.5-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: mpc: Drop unused variable i2c: nomadik: Remove a useless call in the remove function i2c: xiic: Don't try to handle more interrupt events after error
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linuxLinus Torvalds authored
Pull hardening fixes from Kees Cook: - Check for NULL bdev in LoadPin (Matthias Kaehlcke) - Revert unwanted KUnit FORTIFY build default - Fix 1-element array causing boot warnings with xhci-hub * tag 'hardening-v6.5-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: usb: ch9: Replace bmSublinkSpeedAttr 1-element array with flexible array Revert "fortify: Allow KUnit test to build without FORTIFY" dm: verity-loadpin: Add NULL pointer check for 'bdev' parameter
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Anup Sharma authored
The debugfs_create_dir function returns ERR_PTR in case of error, and the only correct way to check if an error occurred is 'IS_ERR' inline function. This patch will replace the null-comparison with IS_ERR. Signed-off-by:
Anup Sharma <anupnewsmail@gmail.com> Suggested-by:
Ivan Orlov <ivan.orlov0322@gmail.com> Signed-off-by:
Jon Mason <jdmason@kudzu.us>
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