The code that handles case 14 (down) and case 16 (up) has been copy and
pasted despite being byte-for-byte identical. Combine them.
Cc: stable@vger.kernel.org # Not a bug fix but it is needed for later bug fixes
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Justin Stitt <justinstitt@google.com>
Link: https://lore.kernel.org/r/20240424-kgdb_read_refactor-v3-4-f236dbe9828d@linaro.org
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Currently, if the cursor position is not at the end of the command buffer
and the user uses the Tab-complete functions, then the console does not
leave the cursor in the correct position.
For example consider the following buffer with the cursor positioned
at the ^:
md kdb_pro 10
^
Pressing tab should result in:
md kdb_prompt_str 10
^
However this does not happen. Instead the cursor is placed at the end
(after then 10) and further cursor movement redraws incorrectly. The
same problem exists when we double-Tab but in a different part of the
code.
Fix this by sending a carriage return and then redisplaying the text to
the left of the cursor.
Cc: stable@vger.kernel.org
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Justin Stitt <justinstitt@google.com>
Link: https://lore.kernel.org/r/20240424-kgdb_read_refactor-v3-3-f236dbe9828d@linaro.org
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Currently when kdb_read() needs to reposition the cursor it uses copy and
paste code that works by injecting an '\0' at the cursor position before
delivering a carriage-return and reprinting the line (which stops at the
'\0').
Tidy up the code by hoisting the copy and paste code into an appropriately
named function. Additionally let's replace the '\0' injection with a
proper field width parameter so that the string will be abridged during
formatting instead.
Cc: stable@vger.kernel.org # Not a bug fix but it is needed for later bug fixes
Tested-by: Justin Stitt <justinstitt@google.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20240424-kgdb_read_refactor-v3-2-f236dbe9828d@linaro.org
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Currently, when the user attempts symbol completion with the Tab key, kdb
will use strncpy() to insert the completed symbol into the command buffer.
Unfortunately it passes the size of the source buffer rather than the
destination to strncpy() with predictably horrible results. Most obviously
if the command buffer is already full but cp, the cursor position, is in
the middle of the buffer, then we will write past the end of the supplied
buffer.
Fix this by replacing the dubious strncpy() calls with memmove()/memcpy()
calls plus explicit boundary checks to make sure we have enough space
before we start moving characters around.
Reported-by: Justin Stitt <justinstitt@google.com>
Closes: https://lore.kernel.org/all/CAFhGd8qESuuifuHsNjFPR-Va3P80bxrw+LqvC8deA8GziUJLpw@mail.gmail.com/
Cc: stable@vger.kernel.org
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Justin Stitt <justinstitt@google.com>
Tested-by: Justin Stitt <justinstitt@google.com>
Link: https://lore.kernel.org/r/20240424-kgdb_read_refactor-v3-1-f236dbe9828d@linaro.org
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
This fixes the MediaTek SVS driver to look for the right thermal zone
names, and adds a missing Kconfig dependency for mtk-socinfo.
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Merge tag 'mtk-soc-fixes-for-v6.9' of https://git.kernel.org/pub/scm/linux/kernel/git/mediatek/linux into for-next
MediaTek driver fixes for v6.9
This fixes the MediaTek SVS driver to look for the right thermal zone
names, and adds a missing Kconfig dependency for mtk-socinfo.
This reworks the memory layout of the argument buffers passed to trusted
applications in QSEECOM, to avoid failures and system crashes.
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Merge tag 'qcom-drivers-fixes-for-6.9' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into for-next
Qualcomm driver fix for v6.9
This reworks the memory layout of the argument buffers passed to trusted
applications in QSEECOM, to avoid failures and system crashes.
* tag 'qcom-drivers-fixes-for-6.9' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
firmware: qcom: uefisecapp: Fix memory related IO errors and crashes
Link: https://lore.kernel.org/r/20240420163816.1133528-1-andersson@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Add the NVreg_RegistryDwords command line parameter, which allows
specifying additional registry keys to be sent to GSP-RM. This
allows additional configuration, debugging, and experimentation
with GSP-RM, which uses these keys to alter its behavior.
Note that these keys are passed as-is to GSP-RM, and Nouveau does
not parse them. This is in contrast to the Nvidia driver, which may
parse some of the keys to configure some functionality in concert with
GSP-RM. Therefore, any keys which also require action by the driver
may not function correctly when passed by Nouveau. Caveat emptor.
The name and format of NVreg_RegistryDwords is the same as used by
the Nvidia driver, to maintain compatibility.
Signed-off-by: Timur Tabi <ttabi@nvidia.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240417215317.3490856-1-ttabi@nvidia.com
This fixes some dts validation issues against bindings for multiple SoCs,
GPU voltage constraints for Chromebook devices, missing gce-client-reg
on various nodes (performance issues) on MT8183/92/95, and also fixes
boot issues on MT8195 when SPMI is built as module.
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Merge tag 'mtk-dts64-fixes-for-v6.9' of https://git.kernel.org/pub/scm/linux/kernel/git/mediatek/linux into for-next
MediaTek ARM64 DTS fixes for v6.9
This fixes some dts validation issues against bindings for multiple SoCs,
GPU voltage constraints for Chromebook devices, missing gce-client-reg
on various nodes (performance issues) on MT8183/92/95, and also fixes
boot issues on MT8195 when SPMI is built as module.
* tag 'mtk-dts64-fixes-for-v6.9' of https://git.kernel.org/pub/scm/linux/kernel/git/mediatek/linux:
arm64: dts: mediatek: mt2712: fix validation errors
arm64: dts: mediatek: mt7986: prefix BPI-R3 cooling maps with "map-"
arm64: dts: mediatek: mt7986: drop invalid thermal block clock
arm64: dts: mediatek: mt7986: drop "#reset-cells" from Ethernet controller
arm64: dts: mediatek: mt7986: drop invalid properties from ethsys
arm64: dts: mediatek: mt7622: drop "reset-names" from thermal block
arm64: dts: mediatek: mt7622: fix ethernet controller "compatible"
arm64: dts: mediatek: mt7622: fix IR nodename
arm64: dts: mediatek: mt7622: fix clock controllers
arm64: dts: mediatek: mt8186-corsola: Update min voltage constraint for Vgpu
arm64: dts: mediatek: mt8183-kukui: Use default min voltage for MT6358
arm64: dts: mediatek: mt8195-cherry: Update min voltage constraint for MT6315
arm64: dts: mediatek: mt8192-asurada: Update min voltage constraint for MT6315
arm64: dts: mediatek: cherry: Describe CPU supplies
arm64: dts: mediatek: mt8195: Add missing gce-client-reg to mutex1
arm64: dts: mediatek: mt8195: Add missing gce-client-reg to mutex
arm64: dts: mediatek: mt8195: Add missing gce-client-reg to vpp/vdosys
arm64: dts: mediatek: mt8192: Add missing gce-client-reg to mutex
arm64: dts: mediatek: mt8183: Add power-domains properity to mfgcfg
It contains:
- fixes for regulator nodes on SAMA7G5 based boards: proper DT property is used
to setup regulators suspend voltage.
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Merge tag 'at91-fixes-6.9' of https://git.kernel.org/pub/scm/linux/kernel/git/at91/linux into for-next
AT91 fixes for 6.9
It contains:
- fixes for regulator nodes on SAMA7G5 based boards: proper DT property is used
to setup regulators suspend voltage.
* tag 'at91-fixes-6.9' of https://git.kernel.org/pub/scm/linux/kernel/git/at91/linux:
ARM: dts: microchip: at91-sama7g54_curiosity: Replace regulator-suspend-voltage with the valid property
ARM: dts: microchip: at91-sama7g5ek: Replace regulator-suspend-voltage with the valid property
Link: https://lore.kernel.org/r/20240421124824.960096-1-claudiu.beznea@tuxon.dev
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This corrects the watchdog IRQ flags for a number of remoteproc
instances, which otherwise prevents the driver from probe in the face of
a probe deferral.
Improvements in other areas, such as USB, have made it possible for CX
rail voltage on SC8280XP to be lowered, no longer meeting requirements
of active PCIe controllers. Necessary votes are added to these
controllers.
The MSI definitions for PCIe controllers in SM8450, SM8550, and SM8650
was incorrect, due to a bug in the driver. As this has now been fixed
the definition needs to be corrected.
Lastly, the SuperSpeed PHY irq of the second USB controller in SC8180x,
and the compatible string for X1 Elite domain idle states are corrected.
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Merge tag 'qcom-arm64-fixes-for-6.9' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into for-next
Qualcomm Arm64 DeviceTree fixes for v6.9
This corrects the watchdog IRQ flags for a number of remoteproc
instances, which otherwise prevents the driver from probe in the face of
a probe deferral.
Improvements in other areas, such as USB, have made it possible for CX
rail voltage on SC8280XP to be lowered, no longer meeting requirements
of active PCIe controllers. Necessary votes are added to these
controllers.
The MSI definitions for PCIe controllers in SM8450, SM8550, and SM8650
was incorrect, due to a bug in the driver. As this has now been fixed
the definition needs to be corrected.
Lastly, the SuperSpeed PHY irq of the second USB controller in SC8180x,
and the compatible string for X1 Elite domain idle states are corrected.
* tag 'qcom-arm64-fixes-for-6.9' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
arm64: dts: qcom: sc8180x: Fix ss_phy_irq for secondary USB controller
arm64: dts: qcom: sm8650: Fix the msi-map entries
arm64: dts: qcom: sm8550: Fix the msi-map entries
arm64: dts: qcom: sm8450: Fix the msi-map entries
arm64: dts: qcom: sc8280xp: add missing PCIe minimum OPP
arm64: dts: qcom: x1e80100: Fix the compatible for cluster idle states
arm64: dts: qcom: Fix type of "wdog" IRQs for remoteprocs
Link: https://lore.kernel.org/r/20240420161002.1132240-1-andersson@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* 'v6.9-armsoc/dtsfixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
arm64: dts: rockchip: Fix USB interface compatible string on kobol-helios64
arm64: dts: rockchip: regulator for sd needs to be always on for BPI-R2Pro
dt-bindings: rockchip: grf: Add missing type to 'pcie-phy' node
arm64: dts: rockchip: drop redundant disable-gpios in Lubancat 2
arm64: dts: rockchip: drop redundant disable-gpios in Lubancat 1
arm64: dts: rockchip: drop redundant pcie-reset-suspend in Scarlet Dumo
arm64: dts: rockchip: mark system power controller and fix typo on orangepi-5-plus
arm64: dts: rockchip: Designate the system power controller on QuartzPro64
arm64: dts: rockchip: drop panel port unit address in GRU Scarlet
arm64: dts: rockchip: Remove unsupported node from the Pinebook Pro dts
arm64: dts: rockchip: Fix the i2c address of es8316 on Cool Pi CM5
arm64: dts: rockchip: add regulators for PCIe on RK3399 Puma Haikou
arm64: dts: rockchip: enable internal pull-up on PCIE_WAKE# for RK3399 Puma
arm64: dts: rockchip: enable internal pull-up on Q7_USB_ID for RK3399 Puma
arm64: dts: rockchip: fix alphabetical ordering RK3399 puma
arm64: dts: rockchip: enable internal pull-up for Q7_THRM# on RK3399 Puma
arm64: dts: rockchip: set PHY address of MT7531 switch to 0x1f
Link: https://lore.kernel.org/r/3413596.CbtlEUcBR6@phil
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Add device node for the H616 Non Maskable Interrupt (NMI) controller.
This controller is present on all H616 boards and derivatives such as
the T507 and H700. Note that on the H616 no NMI pad is exposed.
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20240418181615.1370179-3-macroalpha82@gmail.com
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Replace "gpio" suffix with "gpios" for tegra20-ac97 DTS as the "gpio"
suffix is deprecated.
Signed-off-by: Mohammad Shehar Yaar Tausif <sheharyaar48@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Tegra194 and later chips have a coherency fabric, so some devices can be
marked as DMA coherent to avoid unnecessary cache maintenance.
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Add the wake event for the EQOS ethernet controller on Tegra194 and
Tegra234 devices, so that system can be woken up by an event from this
ethernet controller.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Enable Tegra Security Engine which can accelerate various
AES and HASH algorithms on supported hardware.
Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
The same table as ram-code 0 operates correctly on ram-code 1
v2: rebase on current kernel
Signed-off-by: Nicolas Chauvet <kwizart@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
The definition of bpf_tail_call_static in tools/lib/bpf/bpf_helpers.h
is guarded by a preprocessor check to assure that clang is recent
enough to support it. This patch updates the guard so the function is
compiled when using GCC 13 or later as well.
Tested in bpf-next master. No regressions.
Signed-off-by: Jose E. Marchesi <jose.marchesi@oracle.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20240426145158.14409-1-jose.marchesi@oracle.com
Don't populate the read-only array buf_samples on the stack at
run time, instead make it static const.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Acked-by: Ivan Orlov <ivan.orlov0322@gmail.com>
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Message-ID: <20240425160754.114716-1-colin.i.king@gmail.com>
Contrary to i915, in xe ADL-N is kept as a different platform, not a
subplatform of ADL-P. Since the display side doesn't need to
differentiate between P and N, i.e. IS_ALDERLAKE_P_N() is never called,
just fixup the compat header to check for both P and N.
Moving ADL-N to be a subplatform would be more complex as the firmware
loading in xe only handles platforms, not subplatforms, as going forward
the direction is to check on IP version rather than
platforms/subplatforms.
Fix warning when initializing display:
xe 0000:00:02.0: [drm:intel_pch_type [xe]] Found Alder Lake PCH
------------[ cut here ]------------
xe 0000:00:02.0: drm_WARN_ON(!((dev_priv)->info.platform == XE_ALDERLAKE_S) && !((dev_priv)->info.platform == XE_ALDERLAKE_P))
And wrong paths being taken on the display side.
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240425181610.2704633-1-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
The return-address (RA) register r14 is specified as volatile in the
s390x ELF ABI [1]. Nevertheless proper CFI directives must be provided
for an unwinder to restore the return address, if the RA register
value is changed from its value at function entry, as it is the case.
[1]: s390x ELF ABI, https://github.com/IBM/s390x-abi/releases
Fixes: 4bff8cb545 ("s390: convert to GENERIC_VDSO")
Signed-off-by: Jens Remus <jremus@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Since commit 1b2ac5a6d6 ("s390/3270: use new address translation
helpers") rq->buffer is passed unconditionally to virt_to_dma32().
The 3270 driver allocates requests without buffer, so the value passed
to virt_to_dma32 might be NULL. Check for NULL before assigning.
Fixes: 1b2ac5a6d6 ("s390/3270: use new address translation helpers")
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Since LunarLake, we use the HDadio WAKEEN/WAKESTS to detect wakes for
SoundWire codecs. This patch follows the HDaudio example and
simplifies the behavior on wake-up by unconditionally waking up all
links.
This behavior makes a lot of sense when removing the jack, which may
signal that the user wants to start rendering audio using the local
amplifiers. Resuming all links helps make sure the amplifiers are
ready to be used. Worst case, the pm_runtime suspend would kick-in
after several seconds of inactivity.
Closes: https://github.com/thesofproject/linux/issues/4687
Co-developed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Keqiao Zhang <keqiao.zhang@intel.com>
Link: https://lore.kernel.org/r/20240426064030.2305343-3-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The initial programming sequence only worked in the case where the
OFLEN bit is set, i.e. the DSP handles the SoundWire interface. In the
Linux integration, the interface is owned by the host. This disconnect
leads to wake-ups being routed to the DSP and not to the host.
The suggested update is to rely on the global HDAudio WAKEEN/STATESTS
registers, with the SDI bits used to program the wakeups and check the
status.
Note that there is no way to know which peripheral generated a
wake-up. When the hardware detects a change, it sets all the bits
corresponding to LSDIIDx. The LSDIIDx information can be used to
figure out on which link the wakeup happened, but for further details
the software will have to check the status of each peripheral.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20240426064030.2305343-2-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Translate process/cve.rst into Chinese and add it to
Documentation/translations/zh_CN directory.
Signed-off-by: Dongliang Mu <dzm91@hust.edu.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240422041115.2439166-1-dzm91@hust.edu.cn
In __sbitmap_queue_get_batch(), map->word is read several times, and
update atomically using atomic_long_try_cmpxchg(). But the first two read
of map->word is not protected.
This patch moves the statement val = READ_ONCE(map->word) forward,
eliminating unprotected accesses to map->word within the function.
It is aimed at reducing the number of benign races reported by KCSAN in
order to focus future debugging effort on harmful races.
Signed-off-by: linke li <lilinke99@qq.com>
Link: https://lore.kernel.org/r/tencent_0B517C25E519D3D002194E8445E86C04AD0A@qq.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
In io_msg_exec_remote(), ctx->submitter_task is read using READ_ONCE at
the beginning of the function, checked, and then re-read from
ctx->submitter_task, voiding all guarantees of the checks. Reuse the value
that was read by READ_ONCE to ensure the consistency of the task struct
throughout the function.
Signed-off-by: linke li <lilinke99@qq.com>
Link: https://lore.kernel.org/r/tencent_F9B2296C93928D6F68FF0C95C33475C68209@qq.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Jason Xing says:
====================
Implement reset reason mechanism to detect
From: Jason Xing <kernelxing@tencent.com>
In production, there are so many cases about why the RST skb is sent but
we don't have a very convenient/fast method to detect the exact underlying
reasons.
RST is implemented in two kinds: passive kind (like tcp_v4_send_reset())
and active kind (like tcp_send_active_reset()). The former can be traced
carefully 1) in TCP, with the help of drop reasons, which is based on
Eric's idea[1], 2) in MPTCP, with the help of reset options defined in
RFC 8684. The latter is relatively independent, which should be
implemented on our own, such as active reset reasons which can not be
replace by skb drop reason or something like this.
In this series, I focus on the fundamental implement mostly about how
the rstreason mechanism works and give the detailed passive part as an
example, not including the active reset part. In future, we can go
further and refine those NOT_SPECIFIED reasons.
Here are some examples when tracing:
<idle>-0 [002] ..s1. 1830.262425: tcp_send_reset: skbaddr=x
skaddr=x src=x dest=x state=x reason=NOT_SPECIFIED
<idle>-0 [002] ..s1. 1830.262425: tcp_send_reset: skbaddr=x
skaddr=x src=x dest=x state=x reason=NO_SOCKET
[1]
Link: https://lore.kernel.org/all/CANn89iJw8x-LqgsWOeJQQvgVg6DnL5aBRLi10QN2WBdr+X4k=w@mail.gmail.com/
====================
Link: https://lore.kernel.org/r/20240425031340.46946-1-kerneljasonxing@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
At last, we should let it work by introducing this reset reason in
trace world.
One of the possible expected outputs is:
... tcp_send_reset: skbaddr=xxx skaddr=xxx src=xxx dest=xxx
state=TCP_ESTABLISHED reason=NOT_SPECIFIED
Signed-off-by: Jason Xing <kernelxing@tencent.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Since we have mapped every mptcp reset reason definition in enum
sk_rst_reason, introducing a new helper can cover some missing places
where we have already set the subflow->reset_reason.
Note: using SK_RST_REASON_NOT_SPECIFIED is the same as
SK_RST_REASON_MPTCP_RST_EUNSPEC. They are both unknown. So we can convert
it directly.
Suggested-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jason Xing <kernelxing@tencent.com>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
It relies on what reset options in the skb are as rfc8684 says. Reusing
this logic can save us much energy. This patch replaces most of the prior
NOT_SPECIFIED reasons.
Signed-off-by: Jason Xing <kernelxing@tencent.com>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reuse the dropreason logic to show the exact reason of tcp reset,
so we can finally display the corresponding item in enum sk_reset_reason
instead of reinventing new reset reasons. This patch replaces all
the prior NOT_SPECIFIED reasons.
Signed-off-by: Jason Xing <kernelxing@tencent.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Like what we did to passive reset:
only passing possible reset reason in each active reset path.
No functional changes.
Signed-off-by: Jason Xing <kernelxing@tencent.com>
Acked-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Adjust the parameter and support passing reason of reset which
is for now NOT_SPECIFIED. No functional changes.
Signed-off-by: Jason Xing <kernelxing@tencent.com>
Acked-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Add a new standalone file for the easy future extension to support
both active reset and passive reset in the TCP/DCCP/MPTCP protocols.
This patch only does the preparations for reset reason mechanism,
nothing else changes.
The reset reasons are divided into three parts:
1) reuse drop reasons for passive reset in TCP
2) our own independent reasons which aren't relying on other reasons at all
3) reuse MP_TCPRST option for MPTCP
The benefits of a standalone reset reason are listed here:
1) it can cover more than one case, such as reset reasons in MPTCP,
active reset reasons.
2) people can easily/fastly understand and maintain this mechanism.
3) we get unified format of output with prefix stripped.
4) more new reset reasons are on the way
...
I will implement the basic codes of active/passive reset reason in
those three protocols, which are not complete for this moment. For
passive reset part in TCP, I only introduce the NO_SOCKET common case
which could be set as an example.
After this series applied, it will have the ability to open a new
gate to let other people contribute more reasons into it :)
Signed-off-by: Jason Xing <kernelxing@tencent.com>
Acked-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This patch adds support to per-packet Tx hardware timestamp request to
AF_XDP zero-copy packet via XDP Tx metadata framework. Please note that
user needs to enable Tx HW timestamp capability via igc_ioctl() with
SIOCSHWTSTAMP cmd before sending xsk Tx hardware timestamp request.
Same as implementation in RX timestamp XDP hints kfunc metadata, Timer 0
(adjustable clock) is used in xsk Tx hardware timestamp. i225/i226 have
four sets of timestamping registers. *skb and *xsk_tx_buffer pointers
are used to indicate whether the timestamping register is already occupied.
Furthermore, a boolean variable named xsk_pending_ts is used to hold the
transmit completion until the tx hardware timestamp is ready. This is
because, for i225/i226, the timestamp notification event comes some time
after the transmit completion event. The driver will retrigger hardware irq
to clean the packet after retrieve the tx hardware timestamp.
Besides, xsk_meta is added into struct igc_tx_timestamp_request as a hook
to the metadata location of the transmit packet. When the Tx timestamp
interrupt is fired, the interrupt handler will copy the value of Tx hwts
into metadata location via xsk_tx_metadata_complete().
This patch is tested with tools/testing/selftests/bpf/xdp_hw_metadata
on Intel ADL-S platform. Below are the test steps and results.
Test Step 1: Run xdp_hw_metadata app
./xdp_hw_metadata <iface> > /dev/shm/result.log
Test Step 2: Enable Tx hardware timestamp
hwstamp_ctl -i <iface> -t 1 -r 1
Test Step 3: Run ptp4l and phc2sys for time synchronization
Test Step 4: Generate UDP packets with 1ms interval for 10s
trafgen --dev <iface> '{eth(da=<addr>), udp(dp=9091)}' -t 1ms -n 10000
Test Step 5: Rerun Step 1-3 with 10s iperf3 as background traffic
Test Step 6: Rerun Step 1-4 with 10s iperf3 as background traffic
Based on iperf3 results below, the impact of holding tx completion to
throughput is not observable.
Result of last UDP packet (no. 10000) in Step 4:
poll: 1 (0) skip=99 fail=0 redir=10000
xsk_ring_cons__peek: 1
0x5640a37972d0: rx_desc[9999]->addr=f2110 addr=f2110 comp_addr=f2110 EoP
rx_hash: 0x2049BE1D with RSS type:0x1
HW RX-time: 1679819246792971268 (sec:1679819246.7930) delta to User RX-time sec:0.0000 (14.990 usec)
XDP RX-time: 1679819246792981987 (sec:1679819246.7930) delta to User RX-time sec:0.0000 (4.271 usec)
No rx_vlan_tci or rx_vlan_proto, err=-95
0x5640a37972d0: ping-pong with csum=ab19 (want 315b) csum_start=34 csum_offset=6
0x5640a37972d0: complete tx idx=9999 addr=f010
HW TX-complete-time: 1679819246793036971 (sec:1679819246.7930) delta to User TX-complete-time sec:0.0001 (77.656 usec)
XDP RX-time: 1679819246792981987 (sec:1679819246.7930) delta to User TX-complete-time sec:0.0001 (132.640 usec)
HW RX-time: 1679819246792971268 (sec:1679819246.7930) delta to HW TX-complete-time sec:0.0001 (65.703 usec)
0x5640a37972d0: complete rx idx=10127 addr=f2110
Result of iperf3 without tx hwts request in step 5:
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 2.74 GBytes 2.36 Gbits/sec 0 sender
[ 5] 0.00-10.05 sec 2.74 GBytes 2.34 Gbits/sec receiver
Result of iperf3 running parallel with trafgen command in step 6:
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 2.74 GBytes 2.36 Gbits/sec 0 sender
[ 5] 0.00-10.04 sec 2.74 GBytes 2.34 Gbits/sec receiver
Co-developed-by: Lai Peter Jun Ann <jun.ann.lai@intel.com>
Signed-off-by: Lai Peter Jun Ann <jun.ann.lai@intel.com>
Signed-off-by: Song Yoong Siang <yoong.siang.song@intel.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://lore.kernel.org/r/20240424210256.3440903-1-anthony.l.nguyen@intel.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
If a thermal mitigation event is in progress, its duration value has
not been updated yet, so 0 will be printed as the event duration by
tze_seq_show() which is confusing.
Avoid doing that by marking the beginning of the event with the
KTIME_MIN duration value and making tze_seq_show() compute the current
event duration on the fly, in which case '>' will be printed instead of
'=' in the event duration value field.
Similarly, for trip points that have been crossed on the down, mark
the end of mitigation with the KTIME_MAX timestamp value and make
tze_seq_show() compute the current duration on the fly for the trip
points still involved in the mitigation, in which cases the duration
value printed by it will be prepended with a '>' character.
Fixes: 7ef01f228c ("thermal/debugfs: Add thermal debugfs information for mitigation episodes")
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Tested-by: Lukasz Luba <lukasz.luba@arm.com>
If cdev_dt_seq_show() runs before the first state transition of a cooling
device, it will not print any state residency information for it, even
though it might be reasonably expected to print residency information for
the initial state of the cooling device.
For this reason, rearrange the code to get the initial state of a cooling
device at the registration time and pass it to thermal_debug_cdev_add(),
so that the latter can create a duration record for that state which will
allow cdev_dt_seq_show() to print its residency information.
Fixes: 755113d767 ("thermal/debugfs: Add thermal cooling device debugfs information")
Reported-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Tested-by: Lukasz Luba <lukasz.luba@arm.com>
Because thermal_debug_cdev_state_update() only creates a duration record
for the old state of a cooling device, if its new state is used for the
first time, there will be no record for it and cdev_dt_seq_show() will
not print the duration information for it even though it contains code
to compute the duration value in that case.
Address this by making thermal_debug_cdev_state_update() create a
duration record for the new state if there is none.
Fixes: 755113d767 ("thermal/debugfs: Add thermal cooling device debugfs information")
Reported-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Tested-by: Lukasz Luba <lukasz.luba@arm.com>
Since thermal_debug_cdev_remove() does not run under cdev->lock, it can
run in parallel with thermal_debug_cdev_state_update() and it may free
the struct thermal_debugfs object used by the latter after it has been
checked against NULL.
If that happens, thermal_debug_cdev_state_update() will access memory
that has been freed already causing the kernel to crash.
Address this by using cdev->lock in thermal_debug_cdev_remove() around
the cdev->debugfs value check (in case the same cdev is removed at the
same time in two different threads) and its reset to NULL.
Fixes: 755113d767 ("thermal/debugfs: Add thermal cooling device debugfs information")
Cc :6.8+ <stable@vger.kernel.org> # 6.8+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
In netfs_perform_write(), when the file is marked NETFS_ICTX_WRITETHROUGH
or O_*SYNC or RWF_*SYNC was specified, write-through caching is performed
on a buffered file. When setting up for write-through, we flush any
conflicting writes in the region and wait for the write to complete,
failing if there's a write error to return.
The issue arises if we're writing at or above the EOF position because we
skip the flush and - more importantly - the wait. This becomes a problem
if there's a partial folio at the end of the file that is being written out
and we want to make a write to it too. Both the already-running write and
the write we start both want to clear the writeback mark, but whoever is
second causes a warning looking something like:
------------[ cut here ]------------
R=00000012: folio 11 is not under writeback
WARNING: CPU: 34 PID: 654 at fs/netfs/write_collect.c:105
...
CPU: 34 PID: 654 Comm: kworker/u386:27 Tainted: G S ...
...
Workqueue: events_unbound netfs_write_collection_worker
...
RIP: 0010:netfs_writeback_lookup_folio
Fix this by making the flush-and-wait unconditional. It will do nothing if
there are no folios in the pagecache and will return quickly if there are
no folios in the region specified.
Further, move the WBC attachment above the flush call as the flush is going
to attach a WBC and detach it again if it is not present - and since we
need one anyway we might as well share it.
Fixes: 41d8e7673a ("netfs: Implement a write-through caching option")
Reported-by: kernel test robot <oliver.sang@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202404161031.468b84f-oliver.sang@intel.com
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/2150448.1714130115@warthog.procyon.org.uk
Reviewed-by: Jeffrey Layton <jlayton@kernel.org>
cc: Eric Van Hensbergen <ericvh@kernel.org>
cc: Latchesar Ionkov <lucho@ionkov.net>
cc: Dominique Martinet <asmadeus@codewreck.org>
cc: Christian Schoenebeck <linux_oss@crudebyte.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
cc: v9fs@lists.linux.dev
cc: linux-afs@lists.infradead.org
cc: linux-cifs@vger.kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
