| Age | Commit message (Collapse) | Author |
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When expanding a file system from (16TiB-2MiB) to 18TiB, the operation
exits early which leads to result inconsistency between resize2fs and
Ext4 kernel driver.
=== before ===
○ → resize2fs /dev/mapper/thin
resize2fs 1.45.5 (07-Jan-2020)
Filesystem at /dev/mapper/thin is mounted on /mnt/test; on-line resizing required
old_desc_blocks = 2048, new_desc_blocks = 2304
The filesystem on /dev/mapper/thin is now 4831837696 (4k) blocks long.
[ 865.186308] EXT4-fs (dm-5): mounted filesystem with ordered data mode. Opts: (null). Quota mode: none.
[ 912.091502] dm-4: detected capacity change from 34359738368 to 38654705664
[ 970.030550] dm-5: detected capacity change from 34359734272 to 38654701568
[ 1000.012751] EXT4-fs (dm-5): resizing filesystem from 4294966784 to 4831837696 blocks
[ 1000.012878] EXT4-fs (dm-5): resized filesystem to 4294967296
=== after ===
[ 129.104898] EXT4-fs (dm-5): mounted filesystem with ordered data mode. Opts: (null). Quota mode: none.
[ 143.773630] dm-4: detected capacity change from 34359738368 to 38654705664
[ 198.203246] dm-5: detected capacity change from 34359734272 to 38654701568
[ 207.918603] EXT4-fs (dm-5): resizing filesystem from 4294966784 to 4831837696 blocks
[ 207.918754] EXT4-fs (dm-5): resizing filesystem from 4294967296 to 4831837696 blocks
[ 207.918758] EXT4-fs (dm-5): Converting file system to meta_bg
[ 207.918790] EXT4-fs (dm-5): resizing filesystem from 4294967296 to 4831837696 blocks
[ 221.454050] EXT4-fs (dm-5): resized to 4658298880 blocks
[ 227.634613] EXT4-fs (dm-5): resized filesystem to 4831837696
Signed-off-by: Jerry Lee <jerrylee@qnap.com>
Link: https://lore.kernel.org/r/PU1PR04MB22635E739BD21150DC182AC6A18C9@PU1PR04MB2263.apcprd04.prod.outlook.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Hook up the standard GPIO/pinctrl-based recovery support.
We are doing the recovery at the beginning on a timeout.
Multiple people have contributed to the series.
Original patch from Cirag and another one from Robert.
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Acked-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Move IP layout bits definitions to be close to the place that actually
uses it, together with removal extra defines that not in-use.
Reviewed-by: Raed Salem <raeds@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Remove structs which are no longer used in the driver:
mlx5dr_cmd_qp_create_attr
mlx5_fs_dr_ns
mlx5_pas
Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Remove functions which are no longer used in the driver:
mlx5e_ipsec_is_tx_flow
mlx5_health_flush
get_cqe_enhanced_num_mini_cqes
get_cqe_l3_hdr_type
mlx5_health_flush
mlx5_fs_is_ipsec_flow
_mlx5_fs_is_outer_ipproto_flow
mlx5_fs_is_outer_tcp_flow
mlx5_fs_is_outer_udp_flow
mlx5_fs_is_vxlan_flow
mlx5_fs_is_outer_ipsec_flow
Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Use port selection capability port_select_flow_table_bypass
bit to detect and enable explicit port affinity even when
in lag hash mode.
Signed-off-by: Liu, Changcheng <jerrliu@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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The firmware supports adding a steering rule to catch egress traffic
of the QPs/TISs which are set port affinity explicitly in hash mode.
Enable that mode for NICS with 2 ports as well.
Signed-off-by: Liu, Changcheng <jerrliu@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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active_port bit mask indicates the current active ports. Set bit indicates
the port is active. Update active ports info to FW to redirect the QP/TIS
from inactive ports to other ports.
Signed-off-by: Liu, Changcheng <jerrliu@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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In hash mode, without setting tx affinity explicitly, the port select
flow table decides which port is used for the traffic.
If port_select_flow_table_bypass capability is supported and tx affinity
is set explicitly for QP/TIS, they will be added into the explicit affinity
table in FW to check which port is used for the traffic.
1. The overloaded explicit affinity table may affect performance.
To avoid this, do not set tx affinity explicitly by default.
2. The packets of the same flow need to be transmitted on the same port.
Because the packets of the same flow use different QPs in slow & fast
path, it shouldn't set tx affinity explicitly for these QPs.
Signed-off-by: Liu, Changcheng <jerrliu@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Vlad Buslov <vladbu@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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port_select_flow_table_bypass - When set, device supports
bypass port select flow table.
active_port - Bitmask indicates the current active ports
in PORT_SELECT_FT LAG.
MLX5_SET_HCA_CAP_OP_MODE_PORT_SELECTION - op_mod to operate
PORT_SELECTION_Capabilities.
Signed-off-by: Liu, Changcheng <jerrliu@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Add support for setting NPPS. NPPS is currently available in
REAL_TIME_CLOCK mode only. In addition allow the user to set the pulse
duration.
When NPPS pulse duration is not set explicitly by the user, driver set
it to 50% of the NPPS period.
Signed-off-by: Aya Levin <ayal@nvidia.com>
Reviewed-by: Eran Ben Elisha <eranbe@nvidia.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Add management capability bits indicating firmware may support N pulses
per second. Add corresponding fields in MTPPS register.
Signed-off-by: Aya Levin <ayal@nvidia.com>
Reviewed-by: Eran Ben Elisha <eranbe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Support the multi slave functionality which enables the BlueField
to be registered at up to 16 i2c slave addresses.
Reviewed-by: Khalil Blaiech <kblaiech@nvidia.com>
Signed-off-by: Asmaa Mnebhi <asmaa@nvidia.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Linux is not the only entity using the BlueField I2C busses so
support a lock mechanism provided by hardware to avoid issues
when multiple entities are trying to access the same bus.
The lock is acquired whenever written explicitely or the lock
register is read. So make sure it is always released at the end
of a successful or failed transaction.
Fixes: b5b5b32081cd206b (i2c: mlxbf: I2C SMBus driver for Mellanox BlueField SoC)
Reviewed-by: Khalil Blaiech <kblaiech@nvidia.com>
Signed-off-by: Asmaa Mnebhi <asmaa@nvidia.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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"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>
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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>
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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>
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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>
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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>
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* 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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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* 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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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* 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>
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