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2022-09-27drm/amd/display: Do DIO FIFO enable after DP video stream enableNicholas Kazlauskas
[Why] Avoids a race condition where DIO FIFO can underflow due to no incoming data available. [How] Shift the FIFO enable below stream enable. Make sure fullness level is written before the DIO reset takes place and that we're not doing it twice. Reviewed-by: Syed Hassan <Syed.Hassan@amd.com> Acked-by: Jasdeep Dhillon <jdhillon@amd.com> Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-09-27drm/amd/display: Update DCN32 to use new SR latenciesAlvin Lee
[Description] Update to new SR latencies for DCN32 Reviewed-by: Nevenko Stupar <Nevenko.Stupar@amd.com> Reviewed-by: Jun Lei <Jun.Lei@amd.com> Acked-by: Jasdeep Dhillon <jdhillon@amd.com> Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-09-27drm/amd/display: Avoid avoid unnecessary pixel rate divider programmingTaimur Hassan
[Why] Programming pixel rate divider when FIFO is enabled can cause FIFO error. [How] Skip divider programming when divider values are the same to prevent FIFO error. Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com> Acked-by: Jasdeep Dhillon <jdhillon@amd.com> Signed-off-by: Taimur Hassan <Syed.Hassan@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-09-27drm/amdkfd: fix dropped interrupt in kfd_int_process_v11Graham Sider
Shader wave interrupts were getting dropped in event_interrupt_wq_v11 if the PRIV bit was set to 1. This would often lead to a hang. Until debugger logic is upstreamed, expand comment to stop early return. Signed-off-by: Graham Sider <Graham.Sider@amd.com> Reviewed-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-09-27drm/amdgpu: pass queue size and is_aql_queue to MESGraham Sider
Update mes_v11_api_def.h add_queue API with is_aql_queue parameter. Also re-use gds_size for the queue size (unused for KFD). MES requires the queue size in order to compute the actual wptr offset within the queue RB since it increases monotonically for AQL queues. v2: Make is_aql_queue assign clearer Signed-off-by: Graham Sider <Graham.Sider@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-09-27drm/amdkfd: fix MQD init for GFX11 in init_mqdGraham Sider
Set remaining compute_static_thread_mgmt_se* accordingly. Signed-off-by: Graham Sider <Graham.Sider@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-09-27drm/amd/pm: use adverse selection for dpm features unsupported by driverEvan Quan
It's vbios and pmfw instead of driver who decide whether some dpm features is supported or not. Driver just de-selects those features which are not permitted on user's request. Thus, we use adverse selects model. Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Lijo Lazar <lijo.lazar@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-09-27drm/amd/pm: enable gfxoff feature for SMU 13.0.0Evan Quan
The feature is ready with latest 78.58.0 PMFW. Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Lijo Lazar <lijo.lazar@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-09-27drm/amdgpu: avoid gfx register accessing during gfxoffEvan Quan
Make sure gfxoff is disabled before gfx register accessing. Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Lijo Lazar <lijo.lazar@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-09-27x86/alternative: Fix race in try_get_desc()Nadav Amit
I encountered some occasional crashes of poke_int3_handler() when kprobes are set, while accessing desc->vec. The text poke mechanism claims to have an RCU-like behavior, but it does not appear that there is any quiescent state to ensure that nobody holds reference to desc. As a result, the following race appears to be possible, which can lead to memory corruption. CPU0 CPU1 ---- ---- text_poke_bp_batch() -> smp_store_release(&bp_desc, &desc) [ notice that desc is on the stack ] poke_int3_handler() [ int3 might be kprobe's so sync events are do not help ] -> try_get_desc(descp=&bp_desc) desc = __READ_ONCE(bp_desc) if (!desc) [false, success] WRITE_ONCE(bp_desc, NULL); atomic_dec_and_test(&desc.refs) [ success, desc space on the stack is being reused and might have non-zero value. ] arch_atomic_inc_not_zero(&desc->refs) [ might succeed since desc points to stack memory that was freed and might be reused. ] Fix this issue with small backportable patch. Instead of trying to make RCU-like behavior for bp_desc, just eliminate the unnecessary level of indirection of bp_desc, and hold the whole descriptor as a global. Anyhow, there is only a single descriptor at any given moment. Fixes: 1f676247f36a4 ("x86/alternatives: Implement a better poke_int3_handler() completion scheme") Signed-off-by: Nadav Amit <namit@vmware.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: stable@kernel.org Link: https://lkml.kernel.org/r/20220920224743.3089-1-namit@vmware.com
2022-09-27MIPS: Lantiq: vmmc: fix compile break introduced by gpiod patchDmitry Torokhov
"MIPS: Lantiq: switch vmmc to use gpiod API" patch introduced compile errors, this patch fixes them. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2022-09-27Documentation: devres: add missing SPI helperYang Yingliang
Add devm_spi_alloc_master() and devm_spi_alloc_slave() to devres.rst. They are introduced by commit 5e844cc37a5c ("spi: Introduce device-managed SPI controller allocation"). Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Reviewed-by: Lukas Wunner <lukas@wunner.de> Link: https://lore.kernel.org/r/20220923141803.75734-1-yangyingliang@huawei.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27Documentation: devres: add missing PINCTRL helpersYang Yingliang
Add devm_pinctrl_get_select() and devm_pinctrl_register_and_init() to devres.rst. Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Link: https://lore.kernel.org/r/20220922153737.2863951-1-yangyingliang@huawei.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs: hugetlbpage.rst: fix a typo of hugepage sizeHoi Pok Wu
should be kB instead of Kb Signed-off-by: Hoi Pok Wu <wuhoipok@gmail.com> Reviewed-by: Muchun Song <songmuchun@bytedance.com> Link: https://lore.kernel.org/r/20220922030645.9719-1-wuhoipok@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs/zh_CN: Add new translation of admin-guide/bootconfig.rstWu XiangCheng
The last English version used: commit 2f51efc6b71d ("docs: bootconfig: Add how to embed the bootconfig into kernel") Signed-off-by: Wu XiangCheng <bobwxc@email.cn> Reviewed-by: Yanteng Si <siyanteng@loongson.cn> Link: https://lore.kernel.org/r/386249dc333a3e40b80c3a9483d60d2bfd24a6c4.1663850554.git.bobwxc@email.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs/zh_CN: Update zh_CN/admin-guide/README.rst to 6.0-rc2Wu XiangCheng
* update to commit ea052e7257bd ("docs: admin-guide: for kernel bugs refer to other kernel documentation") We are in 6.x now ;) Signed-off-by: Wu XiangCheng <bobwxc@email.cn> Reviewed-by: Yanteng Si <siyanteng@loongson.cn> Link: https://lore.kernel.org/r/7f6e0b8961f79befa62e0070f9682ab3abde8622.1663850554.git.bobwxc@email.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs/zh_CN: core-api: Add packing Chinese translationBinbin Zhou
Translate core-api/packing.rst into Chinese. Last English version used: commit 1ec779b9fabc ("docs: packing: move it to core-api book and adjust markups"). Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn> Reviewed-by: Wu XiangCheng <bobwxc@email.cn> Reviewed-by: Yanteng Si<siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/96b19575ca7e9e23941e8a5ef92120f1bffbc518.1660881950.git.zhoubinbin@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs/zh_CN: core-api: Add generic-radix-tree Chinese translationBinbin Zhou
Translate core-api/generic-radix-tree.rst into Chinese. Last English version used: commit ba20ba2e3743 ("generic radix trees"). Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn> Reviewed-by: Wu XiangCheng <bobwxc@email.cn> Reviewed-by: Yanteng Si<siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/aad94e2a053ae021eb4d63240690b05c2f3e8dec.1660881950.git.zhoubinbin@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs/zh_CN: core-api: Add circular-buffers Chinese translationBinbin Zhou
Translate core-api/circular-buffers.rst into Chinese. Last English version used: commit 714b6904e23e ("doc: Remove ".vnet" from paulmck email addresses"). Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn> Reviewed-by: Wu XiangCheng <bobwxc@email.cn> Reviewed-by: Yanteng Si<siyanteng@loongson.cn> Link: https://lore.kernel.org/r/6b94f233dd4b4a9e6da6fa2f86a9b1d32f104004.1660881950.git.zhoubinbin@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs/zh_CN: core-api: Add idr Chinese translationBinbin Zhou
Translate core-api/idr.rst into Chinese. Last English version used: commit 85656ec193e9 ("IDR: Note that the IDR API is deprecated"). Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn> Reviewed-by: Wu XiangCheng <bobwxc@email.cn> Reviewed-by: Yanteng Si<siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/9f578ea087df7ef8665fc08541d208e7429176ec.1660881950.git.zhoubinbin@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs: x86: replace do_IRQ int the entry_64.rst with common_interrupt()Tuo Cao
do_IRQ has been replaced by common_interrupt in commit fa5e5c409213 ("x86/entry: Use idtentry for interrupts"). Signed-off-by: Tuo Cao <91tuocao@gmail.com> Link: https://lore.kernel.org/r/20220915150155.9908-1-91tuocao@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27usb: chipidea: clarify Documentation/ABI textRandy Dunlap
Fix grammar and improve readability of chipidea-usb2 text. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Peter Chen <peter.chen@kernel.org> Cc: linux-usb@vger.kernel.org Acked-by: Peter Chen <peter.chen@kernel.org> Link: https://lore.kernel.org/r/20220827203217.7837-1-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27Documentation: W1: minor typo correctionsRandy Dunlap
Correct one typo/spello and remove one duplicated word in the W1 documentation. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Evgeniy Polyakov <zbr@ioremap.net> Link: https://lore.kernel.org/r/20220828002845.7022-1-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27Documentation: fb: udlfb: clean up text and formattingRandy Dunlap
Clean up punctuation, spelling, and formatting for command line usage and modprobe config file usage in udlfb.rst. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Bernie Thompson <bernie@plugable.com> Cc: linux-fbdev@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: Helge Deller <deller@gmx.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Bagas Sanjaya <bagasdotme@gmail.com> Link: https://lore.kernel.org/r/20220828192501.14232-1-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs/core-api: expand Fedora instructions for GCC pluginsRobert Elliott
In Fedora 36, cross-compiling an allmodconfig configuration for other architectures on x86 fails with this problem: In file included from ../scripts/gcc-plugins/gcc-common.h:95, from ../scripts/gcc-plugins/latent_entropy_plugin.c:78: /usr/lib/gcc/aarch64-linux-gnu/12/plugin/include/builtins.h:23:10: fatal error: mpc.h: No such file or directory 23 | #include <mpc.h> | ^~~~~~~ compilation terminated. In that distro, that header file is available in the separate libmpc-devel package. Although future versions of Fedora might correctly mark that dependency, mention this additional package. To help detect such problems ahead of time, describe the gcc -print-file-name=plugin command that is used by scripts/gcc-plugins/Kconfig to detect plugins [1]. [1] https://lore.kernel.org/lkml/CAHk-=wjjiYjCp61gdAMpDOsUBU-A2hFFKJoVx5VAC7yV4K6WYg@xxxxxxxxxxxxxx/ Fixes: 43e96ef8b70c50f ("docs/core-api: Add Fedora instructions for GCC plugins"); Signed-off-by: Robert Elliott <elliott@hpe.com> Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20220827193836.2582079-1-elliott@hpe.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27Documentation: spufs: correct a duplicate word typoRandy Dunlap
Fix a typo of "or" which should be "of". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jeremy Kerr <jk@ozlabs.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: linuxppc-dev@lists.ozlabs.org Cc: Jonathan Corbet <corbet@lwn.net> Reviewed-by: Jeremy Kerr <jk@ozlabs.org> Link: https://lore.kernel.org/r/20220829232908.32437-1-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs/zh_CN: Update zh_CN/process/coding-style.rst to 6.0-rc2Wu XiangCheng
* update to commit c04639a7d2fb ("coding-style.rst: trivial: fix location of driver model macros") Signed-off-by: Wu XiangCheng <bobwxc@email.cn> Reviewed-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/Yw2ewM4wfaDDLjTk@bobwxc.mipc Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27Documentation/hw-vuln: Update spectre docLin Yujun
commit 7c693f54c873691 ("x86/speculation: Add spectre_v2=ibrs option to support Kernel IBRS") adds the "ibrs " option in Documentation/admin-guide/kernel-parameters.txt but omits it to Documentation/admin-guide/hw-vuln/spectre.rst, add it. Signed-off-by: Lin Yujun <linyujun809@huawei.com> Link: https://lore.kernel.org/r/20220830123614.23007-1-linyujun809@huawei.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27Documentation: filesystems: correct possessive "its"Randy Dunlap
Change occurrences of "it's" that are possessive to "its" so that they don't read as "it is". For f2fs.rst, reword one description for better clarity. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-fsdevel@vger.kernel.org Cc: linux-f2fs-devel@lists.sourceforge.net Cc: linux-xfs@vger.kernel.org Cc: Christian Brauner <brauner@kernel.org> Cc: Seth Forshee <sforshee@kernel.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Theodore Ts'o <tytso@mit.edu> Cc: Jaegeuk Kim <jaegeuk@kernel.org> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: "Christian Brauner (Microsoft)" <brauner@kernel.org> Reviewed-by: Chao Yu <chao@kernel.org> Reviewed-by: Jaegeuk Kim <jaegeuk@kernel.org> Link: https://lore.kernel.org/r/20220901002828.25102-1-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27Documentation: stable: Document alternative for referring upstream commit hashSalvatore Bonaccorso
Additionally to the "commit <sha1> upstream." variant, "[ Upstream commit <sha1> ]" is used as well as alternative to refer to the upstream commit hash. Signed-off-by: Salvatore Bonaccorso <carnil@debian.org> Link: https://lore.kernel.org/r/20220901184328.4075701-1-carnil@debian.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs: update mediator information in CoC docsShuah Khan
Update mediator information in the CoC interpretation document. Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> Link: https://lore.kernel.org/r/20220901212319.56644-1-skhan@linuxfoundation.org Cc: stable@vger.kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs/zh_CN: add dt kernel-api translationYanteng Si
Translte .../devicetree/kernel-api.rst into Chinese. Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/35fd1b5801d7191e078937908008115f8949aac3.1662449105.git.siyanteng@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs/zh_CN: add dt overlay-notes translationYanteng Si
Translate .../devicetree/overlay-notes.rst into Chinese. Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/b957580e448e2d0ab7917644c8f8f1614060b20a.1662449105.git.siyanteng@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs/zh_CN: add dt dynamic-resolution-notes translationYanteng Si
Translate .../devicetree/dynamic-resolution-notes.rst into Chinese. Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/d8b7c06fe8fdb58cb2ec6989e09f9999aca2d8d1.1662449105.git.siyanteng@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs/zh_CN: add dt changesets translationYanteng Si
Translate .../devicetree/changesets.rst into Chinese. Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/07d23cedda1e2cd8cf40d68059024d116f8d004e.1662449105.git.siyanteng@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs/zh_CN: add PCI acpi-info translationYanteng Si
Translate .../PCI/acpi-info.rst into Chinese. Add PCI into .../zh_CN/index.rst. Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Reviewed-by: Wu XiangCheng <bobwxc@email.cn> Link: https://lore.kernel.org/r/f07ba17ae9c6d728d6135ecc0577a932e9836fba.1662449105.git.siyanteng@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27Documentation: process/submitting-patches: misspelling "mesages"Rong Tao
Fix spelling mistakes, "mesages" should be spelled "messages". Signed-off-by: Rong Tao <rtoax@foxmail.com> Link: https://lore.kernel.org/r/tencent_924BF0B25425E2D5673409D1CF604F682505@qq.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27Delete duplicate words from kernel docsAkhil Raj
I have deleted duplicate words like to, guest, trace, when, we Signed-off-by: Akhil Raj <lf32.dev@gmail.com> Link: https://lore.kernel.org/r/20220829065239.4531-1-lf32.dev@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs: admin-guide: for kernel bugs refer to other kernel documentationLukas Bulwahn
The current section 'If something goes wrong' makes a number of suggestions for debugging, bug hunting and reporting issues, which are quite briefly described in that section. However, the suggestions are also well covered in other kernel documentation or sometimes simply outdated. Here, each suggestion in that section is summarized, and then followed with its assessment, and the derived action for each suggestion: - use MAINTAINERS and mailing list: covered in 'Reporting issues', summarized in the short guide, detailed in its further section. Reporting issues even provides some specific examples that guides readers well through the needed steps. Refer to 'Reporting issues'. - contact Linus Torvalds: probably outdated as currently described. nevertheless covered in 'Reporting issues'. Reporting issues points out to contact the relevant kernel maintainers first, and after some patience and failed attempts with those maintainers, contacting Linus Torvalds might be okay. Refer to 'Reporting issues'. - tell what kernel, how to duplicate, the setup, if the problem is new or old and when did you notice: covered in 'Reporting issues', especially in Step-by-step guide how to report issues to the kernel maintainers. Refer to 'Reporting issues'. - duplicate kernel bug reports exactly: covered in 'Reporting issues', especially in Write and send the report. Refer to 'Reporting issues'. - read 'Bug hunting': keep this reference. Refer to 'Bug hunting'. - compile the kernel with CONFIG_KALLSYMS: covered in 'Reporting issues', especially in Decode failure messages. Refer to 'Reporting issues'. - alternatively, use ksymoops: ksymoops at the mentioned URL seems not to be maintained anymore. It was released roughly once a year until version 2.4.11 in 2005, but has not seen a new release since then. The information in ./scripts/ksymoops/README is from 1999, and does not give more insight on its actual maintenance state either. Ksymoops is mentioned as system utility in changes.rst, but also not recommended there. Drop the explanation on using ksymoops. - alternatively, lookup dump manually with the EIP and nm to determine the function in which the kernel crashes: this method seems already a quite advanced and low-level debugging method. Even all the further references on bug hunting and debugging do not mention it. Drop this alternative method and limit mentioning methods explained in the other existing kernel documentation. - read 'Reporting issues': keep this reference. Refer to 'Reporting issues'. - use gdb for debugging: some specific details, e.g., edit arch/x86/Makefile, are probably outdated or limited to one (historic important) setup. Using gdb is covered in 'Bug hunting', 'Debugging kernel and modules via gdb' and 'Using kgdb, kdb and the kernel debugger internals'. Refer to those three documents. Overall, it is sufficient to refer to reporting-issues.rst, bug-hunting.rst, gdb-kernel-debugging.rst and kgdb.rst and this way cover the existing suggestions. 'Reporting issues' is quite new and probably up to date. 'Bug hunting', 'Debugging kernel and modules via gdb' and 'Using kgdb, kdb and the kernel debugger internals' might need some revisit and update, but they are generally in an acceptable state for referring to them. Replace the existing suggestions by reference to other existing kernel documentation covering those suggestions---partly even nicely summarized and then explained in greater detail. Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Link: https://lore.kernel.org/r/20220720041325.15693-3-lukas.bulwahn@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs: admin-guide: do not mention the 'run a.out user programs' featureLukas Bulwahn
Running a.out user programs with the latest kernel release is a very rare and uncommon use case nowadays. The support of a.out user programs is only remaining for the alpha architecture and is not defined and activated in the architecture's Kconfig (so even the activation of this support requires to modify the Kconfig file and not just kernel build configuration). The discussion on a.out support in 2019 (see Link) shows that the support of a.out user programs is just remaining for a special corner case from some (alpha architecture) users. There is no need to point out and mention this special feature to the general audience of kernel users. Delete the reference to this historic and special feature. Link: https://lore.kernel.org/all/CAHk-=wgt7M6yA5BJCJo0nF22WgPJnN8CvViL9CAJmd+S+Civ6w@mail.gmail.com/ Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Link: https://lore.kernel.org/r/20220720041325.15693-2-lukas.bulwahn@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27Documentation/ABI: correct possessive "its" typosRandy Dunlap
Correct all uses of "it's" that are meant to be possessive "its". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20220801025207.29971-1-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27Remove duplicate words inside documentationAkhil Raj
I have removed repeated `the` inside the documentation Signed-off-by: Akhil Raj <lf32.dev@gmail.com> Link: https://lore.kernel.org/r/20220827145359.32599-1-lf32.dev@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs/conf.py: Respect env variable SPHINX_IMGMATHAkira Yokosawa
On some distros with coarse-grained packaging policy, dvipng is installed along with latex. In such cases, math rendering will use imgmath by default. It is possible to override the choice by specifying the option string of "-D html_math_renderer='mathjax'" to sphinx-build (Sphinx >= 1.8). To provide developers an easier-to-use knob, add code for an env variable "SPHINX_IMGMATH" which overrides the automatic choice of math renderer for html docs. SPHINX_IMGMATH=yes : Load imgmath even if dvipng is not found SPHINX_IMGMATH=no : Don't load imgmath (fall back to mathjax) Signed-off-by: Akira Yokosawa <akiyks@gmail.com> Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org> Link: https://lore.kernel.org/r/5a582b2b-d51c-a062-36b2-19479cf68fab@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs/conf.py: Treat mathjax as fallback math rendererAkira Yokosawa
Currently, math expressions using the "math::" directive or the ":math:" role of Sphinx need the imgmath extension for proper rendering in html and epub builds. imgmath requires dvipng (and latex). Otherwise, "make htmldocs" will complain of missing commands. As a matter of fact, the mathjax extension is loaded by default since Sphinx v1.8 and it is good enough for html docs without any dependency on texlive packages. Stop loading the imgmath extension for html docs unless requirements for imgmath are met. To find out whether required commands are available, add a helper find_command(), which is a wrapper of shutil.which(). For epub docs, keep the same behavior of always loading imgmath. Signed-off-by: Akira Yokosawa <akiyks@gmail.com> Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org> Link: https://lore.kernel.org/r/a6a877fc-dc93-2bda-a6d3-37001d99942a@gmail.com [jc: Took out the writing of the math_renderer decision] Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs/zh_CN: Update zh_CN/process/submit-checklist.rst to 6.0-rc2Wu XiangCheng
* update to commit 163ba35ff371 ("doc: use KCFLAGS instead of EXTRA_CFLAGS to pass flags from command line") Signed-off-by: Wu XiangCheng <bobwxc@email.cn> Reviewed-by: Yanteng Si <siyanteng@loongson.cn> Link: https://lore.kernel.org/r/Ywli7VfhQVPHKiGw@bobwxc.mipc Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs: scheduler: Update new path for the sysctl knobsLukasz Luba
Add missing update for the documentation bit of some scheduler knob. The knobs have been moved to /debug/sched/ location (with adjusted names). Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Reviewed-by: Alex Shi <alexs@kernel.org> Tested-by: Yanteng Si <siyanteng@loongson.cn> Link: https://lore.kernel.org/r/20220816121907.841-1-lukasz.luba@arm.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs/zh_TW: Remove oops-tracingYanteng Si
The English version of oops-tracing has been refactored and has been translated into Chinese. Let's remove them. Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Acked-by: Wu XiangCheng <bobwxc@email.cn> Link: https://lore.kernel.org/r/0d22733cea474b0a3784f8de6b4bc4841fbaba77.1661431365.git.siyanteng@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs/zh_CN: Remove IRQ and oops-tracingYanteng Si
The English version of IRQ has been refactored and the new document (not called that anymore) has been moved to core-api/irq, which has been translated into Chinese. oops-tracing is pretty much the same, let's remove them. Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Wu XiangCheng <bobwxc@email.cn> Link: https://lore.kernel.org/r/7dc43c33ea7e2edf668070b203dce83b285f2cdb.1661431365.git.siyanteng@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27docs/zh_CN: Update the translation of io_ordering to 6.0-rc2Yanteng Si
Update to commit d1ce350015d8 Documentation: ("Add io_ordering.rst to driver-api manual"). Move ../zh_CN/io_ordering.txt to ../zh_CN/driver-api/io_ordering.rst. Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Wu XiangCheng <bobwxc@email.cn> Link: https://lore.kernel.org/r/c66f6d17c509c2c93f2afd30223c4bcf734f8317.1661431365.git.siyanteng@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-09-27Documentation: ext4: correct the document about superblockJunChao Sun
The description of s_lastcheck_hi, s_first_error_time_hi, and s_last_error_time_hi fields refer to themselves, while these means referring to upper 8 bits (byte) of corresponding fields (s_lastcheck, s_first_error_time, and s_last_error_time). Correct the mistake. Signed-off-by: JunChao Sun <sunjunchao2870@gmail.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Link: https://lore.kernel.org/r/20220815125233.2040-1-sunjunchao2870@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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