clk_disable_unprepare() already checks NULL by using IS_ERR_OR_NULL.
Remove unneeded NULL check for dev->ext_clk here.
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Link: https://patch.msgid.link/20250312033509.1235268-1-nichen@iscas.ac.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
The m68k architecture's source files do not require <linux/fb.h>.
Remove the include statements.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>
Add support for parsing the Group Entity properties from DisCo/ACPI.
Group Entities allow control of several other Entities, typically
Selector Units, from a single control.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20250312172205.4152686-7-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
SDCA Ranges are two dimensional arrays of data associated with controls,
add a helper to provide an x,y access mechanism to the data and a helper
to locate a specific value inside a range.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20250312172205.4152686-6-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
SDCA Controls come in a variety of data formats, to simplify later
parsing work out this data type as the control is parsed and stash it
for later use.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20250312172205.4152686-5-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Implementation defined controls will not be present in the large list of
known controls for SDCA. The driver should not return an error for these,
because it is perfectly legal to have implementation defined controls.
Update the handling to instead generate a generic name.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20250312172205.4152686-4-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Slightly neaten up the initialization write code to overlay a struct
rather than shifting the pointer along manually. This also removes the
Sparse warning:
sound/soc/sdca/sdca_functions.c:233:36: warning: cast to restricted __le32
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20250312172205.4152686-2-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The current code for the IRQ in pcm6240 makes no sense:
it looks up an IRQ with of_irq_get(), treat it as a GPIO
by issuing gpio_request(), gpio_direction_input()
and gpio_to_irq() on it.
This is just wrong, if the device tree assigns the IRQ
from a GPIO number this is just incorrect: it is clearly
stated that GPIO providers and IRQ providers are
orthogonal.
It is possible to look up an IRQ to a corresponding GPIO
line but this is taking an IRQ and pretending it's a
GPIO, which is just semantically wrong.
Drop the offending code and treat the IRQ that we get
from the device tree as any other IRQ, see for example
other codec drivers.
The DT bindings for this codec does not have any in-tree
DTS files, which may explain why things are weird.
As a bonus, this moves the driver away from the legacy
<linux/gpio.h> include.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patch.msgid.link/20250312-pcm-codecs-v1-3-41ffc4f8fc5c@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This converts the PCM3008 driver to look up the GPIO lines
using descriptors.
Apparently there are no in-tree users of the platform data
struct, so users need to adopt.
New users can associate the GPIO lines with the platform
device "pcm3008-codec".
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patch.msgid.link/20250312-pcm-codecs-v1-2-41ffc4f8fc5c@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This driver includes the legacy GPIO header <linux/gpio.h>
but does not use any symbols from it so drop the include.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patch.msgid.link/20250312-pcm-codecs-v1-1-41ffc4f8fc5c@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Enable headset jack detection for MT8188 platforms that use the MT6359
ACCDET block for it, indicated by the mediatek,accdet property in DT.
For those platforms, register a jack and initialize the ACCDET block to
report jack events through it.
Co-developed-by: Zoran Zhan <zoran.zhan@mediatek.com>
Signed-off-by: Zoran Zhan <zoran.zhan@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Link: https://patch.msgid.link/20250306-mt8188-accdet-v3-4-7828e835ff4b@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Add a stub for mt6359_accdet_enable_jack_detect() to prevent linker
failures in the machine sound drivers calling it when
CONFIG_SND_SOC_MT6359_ACCDET is not enabled.
Suggested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Link: https://patch.msgid.link/20250306-mt8188-accdet-v3-3-7828e835ff4b@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Handle the optional mediatek,accdet property. When present, retrieve the
sound component from its phandle, so the machine sound driver can use it
to register the audio jack and initialize the MT6359 ACCDET for jack
detection.
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Link: https://patch.msgid.link/20250306-mt8188-accdet-v3-2-7828e835ff4b@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Add a mediatek,accdet phandle property to allow getting a reference to
the MT6359 ACCDET block, which is responsible for detecting jack
insertion/removal.
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Link: https://patch.msgid.link/20250306-mt8188-accdet-v3-1-7828e835ff4b@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The driver is for amplifiers aw88166 of Awinic Technology
Corporation. The AW88166 is a high efficiency digital
Smart K audio amplifier
Signed-off-by: Weidong Wang <wangweidong.a@awinic.com>
Link: https://patch.msgid.link/20250312120100.9730-3-wangweidong.a@awinic.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Add the awinic,aw88166 property to support the aw88166 chip.
Signed-off-by: Weidong Wang <wangweidong.a@awinic.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20250312120100.9730-2-wangweidong.a@awinic.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Add maintainers entry for the `pin-init` crate.
This crate is already being maintained by me, but until now there
existed two different versions: the version inside of the kernel tree
and a user-space version at [1]. The previous patches synchronized these
two versions to reduce the maintenance burden. In order to keep them
synchronized from now on, separate the maintenance from other Rust code.
Link: https://github.com/Rust-for-Linux/pin-init [1]
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Link: https://lore.kernel.org/r/20250308110339.2997091-23-benno.lossin@proton.me
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
The pin-init crate is now compiled in a standalone fashion, so revert
the earlier commit that disabled the doctests in pin-init in order to
avoid build errors while transitioning the crate into a standalone
version.
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250308110339.2997091-22-benno.lossin@proton.me
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Add readme and contribution guidelines of the user-space version of
pin-init.
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250308110339.2997091-21-benno.lossin@proton.me
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Remove the last differences between the kernel version and the
user-space version.
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Link: https://lore.kernel.org/r/20250308110339.2997091-20-benno.lossin@proton.me
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Synchronize the internal macros crate with the user-space version that
uses the quote crate [1] instead of a custom `quote!` macro. The imports
in the different version are achieved using `cfg` on the kernel config
value. This cfg is always set in the kernel and never set in the
user-space version.
Since the quote crate requires the proc_macro2 crate, imports also need
to be adjusted and `.into()` calls have to be inserted.
Link: https://crates.io/crates/quote [1]
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Fiona Behrens <me@Kloenk.dev>
Link: https://lore.kernel.org/r/20250308110339.2997091-19-benno.lossin@proton.me
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Synchronize documentation and examples with the user-space version.
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250308110339.2997091-18-benno.lossin@proton.me
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
To synchronize the kernel's version of pin-init with the user-space
version, introduce support for `std` and `alloc`. While the kernel uses
neither, the user-space version has to support both. Thus include the
required `#[cfg]`s and additional code.
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250308110339.2997091-17-benno.lossin@proton.me
[ Undo the temporary `--extern force:alloc` since now we have contents
for `alloc` here. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Rename relative paths inside of the crate to still refer to the same
items, also rename paths inside of the kernel crate and adjust the build
system to build the crate.
[ Remove the `expect` (and thus the `lint_reasons` feature) since
the tree now uses `quote!` from `rust/macros/export.rs`. Remove the
`TokenStream` import removal, since it is now used as well.
In addition, temporarily (i.e. just for this commit) use an `--extern
force:alloc` to prevent an unknown `new_uninit` error in the `rustdoc`
target. For context, please see a similar case in:
https://lore.kernel.org/lkml/20240422090644.525520-1-ojeda@kernel.org/
And adjusted the message above. - Miguel ]
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250308110339.2997091-16-benno.lossin@proton.me
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Add infrastructure for moving the initialization API to its own crate.
Covers all make targets such as `rust-analyzer` and `rustdoc`. The tests
of pin-init are not added to `rusttest`, as they are already tested in
the user-space repository [1].
Link: https://github.com/Rust-for-Linux/pin-init [1]
Co-developed-by: Benno Lossin <benno.lossin@proton.me>
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250308110339.2997091-15-benno.lossin@proton.me
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Change the paste macro path from `::kernel::macros::paste!` to use
`$crate::init::macros::paste!` instead, which links to
`::macros::paste!`. This is because the pin-init crate will be a
dependency of the kernel, so it itself cannot have the kernel as a
dependency.
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250308110339.2997091-14-benno.lossin@proton.me
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
In order to make pin-init a standalone crate, remove dependencies on
kernel-specific code such as `ScopeGuard` and `KBox`.
`ScopeGuard` is only used in the `[pin_]init_array_from_fn` functions
and can easily be replaced by a primitive construct.
`KBox` is only used for type variance of unsized types and can also
easily be replaced.
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250308110339.2997091-13-benno.lossin@proton.me
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Before switching to compile the `pin-init` crate directly, change
any links that would be invalid to links that are valid both before and
after the switch.
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250308110339.2997091-12-benno.lossin@proton.me
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
When making pin-init its own crate, `Zeroable` will no longer be defined
by the kernel crate and thus implementing it for `Option<Box<T, A>>` is
no longer possible due to the orphan rule.
For this reason introduce a new `ZeroableOption` trait that circumvents
this problem.
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250308110339.2997091-11-benno.lossin@proton.me
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
In order to make pin-init a standalone crate, move kernel-specific code
directly into the kernel crate. Since `Opaque<T>` and `KBox<T>` are part
of the kernel, move their `Zeroable` implementation into the kernel
crate.
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Link: https://lore.kernel.org/r/20250308110339.2997091-10-benno.lossin@proton.me
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
In order to make pin-init a standalone crate, move kernel-specific code
directly into the kernel crate. This includes the `InPlaceInit<T>`
trait, its implementations and the implementations of `InPlaceWrite` for
`Arc` and `UniqueArc`. All of these use the kernel's error type which
will become unavailable in pin-init.
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250308110339.2997091-9-benno.lossin@proton.me
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Move the ability to just write `try_pin_init!(Foo { a <- a_init })`
(note the missing `? Error` at the end) into the kernel crate.
Remove this notation from the pin-init crate, since the default when no
error is specified is the kernel-internal `Error` type. Instead add two
macros in the kernel crate that serve this default and are used instead
of the ones from `pin-init`.
This is done, because the `Error` type that is used as the default is
from the kernel crate and it thus prevents making the pin-init crate
standalone.
In order to not cause a build error due to a name overlap, the macros in
the pin-init crate are renamed, but this change is reverted in a future
commit when it is a standalone crate.
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250308110339.2997091-8-benno.lossin@proton.me
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
The `[pin_]init!` macros have the same behavior as the `try_[pin_]init!`
macros, except that they set the error type to `Infallible`.
Instead of calling the primitive `__init_internal!` with the correct
parameters, the same can thus be achieved by calling `try_[pin_]init!`.
Since this makes it more clear what their behavior is, simplify the
implementations of `[pin_]init!`.
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250308110339.2997091-7-benno.lossin@proton.me
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Replace the examples in the documentation by the ones from the
user-space version and introduce the standalone examples from the
user-space version such as the `CMutex<T>` type.
The `CMutex<T>` example from the pinned-init repository [1] is used in
several documentation examples in the user-space version instead of the
kernel `Mutex<T>` type (as it's not available). In order to split off
the pin-init crate, all examples need to be free of kernel-specific
types.
Link: https://github.com/rust-for-Linux/pinned-init [1]
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250308110339.2997091-6-benno.lossin@proton.me
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Move the documentation of proc-macros from pin-init-internal into
pin-init. This is because documentation can only reference types from
dependencies and pin-init-internal cannot have pin-init as a dependency,
as that would be cyclic.
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250308110339.2997091-5-benno.lossin@proton.me
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
In preparation of splitting off the pin-init crate from the kernel
crate, move all kernel-specific documentation from pin-init back into
the kernel crate.
Also include an example from the user-space version [1] adapted to the
kernel.
The new `init.rs` file will also be populated by kernel-specific
extensions to the pin-init crate by the next commits.
Link: c1417c64c7/src/lib.rs (L161) [1]
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250308110339.2997091-4-benno.lossin@proton.me
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
In preparation of splitting off the pin-init crate from the kernel
crate, move all pin-init API code (including proc-macros) into
`rust/pin-init`.
Moved modules have their import path adjusted via the `#[path = "..."]`
attribute. This allows the files to still be imported in the kernel
crate even though the files are in different directories.
Code that is moved out of files (but the file itself stays where it is)
is imported via the `include!` macro. This also allows the code to be
moved while still being part of the kernel crate.
Note that this commit moves the generics parsing code out of the GPL-2.0
file `rust/macros/helpers.rs` into the Apache-2.0 OR MIT file
`rust/pin_init/internal/src/helpers.rs`. I am the sole author of that
code and it already is available with that license at [1].
The same is true for the entry-points of the proc-macros `pin_data`,
`pinned_drop` and `derive_zeroable` in `rust/macros/lib.rs` that are
moved to `rust/pin_data/internal/src/lib.rs`. Although there are some
smaller patches that fix the doctests.
Link: https://github.com/Rust-for-Linux/pinned-init [1]
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250308110339.2997091-3-benno.lossin@proton.me
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
The build system cannot handle doctests in the kernel crate in files
outside of `rust/kernel/`. Subsequent commits will move files out of
that directory, but will still compile them as part of the kernel crate.
Thus ignore all doctests in the to-be-moved files.
Leave tests disabled until they are separated into their own crate and
they stop causing breakage.
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20250308110339.2997091-2-benno.lossin@proton.me
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Extend the Result documentation by some guidelines and examples how
to handle Result error cases gracefully. And how to not handle them.
While at it fix one missing `Result` link in the existing documentation.
[ Moved links out-of-line for improved readability. Fixed `srctree`
link. Sorted out-of-line links. Added newlines for consistency
with other docs. Applied paragraph break suggestion. Reworded
slightly the docs in a couple places. Added Markdown.
In addition, added `#[allow(clippy::single_match)` for the first
example. It cannot be an `expect` since due to a difference introduced
in Rust 1.85.0 when there are comments in the arms of the `match`.
Reported it upstream, but it was intended:
https://github.com/rust-lang/rust-clippy/issues/14418
Perhaps Clippy will lint about it in the future, but without autofix:
https://github.com/rust-lang/rust-clippy/pull/14420
- Miguel ]
Link: https://lore.kernel.org/rust-for-linux/CANiq72keOdXy0LFKk9SzYWwSjiD710v=hQO4xi+5E4xNALa6cA@mail.gmail.com/
Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Link: https://lore.kernel.org/r/20250122054719.595878-1-dirk.behme@de.bosch.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Tracing instances have a ref count to keep them around while files within
their directories are open. This prevents them from being deleted while
they are used. The histogram code had some files that needed to take the
ref count and that was added, but the error paths did not decrement the
ref counts. This caused the instances from ever being removed if a
histogram file failed to open due to some error.
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Merge tag 'trace-v6.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing fix from Steven Rostedt:
"Fix ref count of trace_array in error path of histogram file open
Tracing instances have a ref count to keep them around while files
within their directories are open. This prevents them from being
deleted while they are used.
The histogram code had some files that needed to take the ref count
and that was added, but the error paths did not decrement the ref
counts. This caused the instances from ever being removed if a
histogram file failed to open due to some error"
* tag 'trace-v6.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing: Correct the refcount if the hist/hist_debug file fails to open
It's possible for checksum errors to be transient - e.g. flakey
controller or cable, thus we need additional retries (besides retrying
from different replicas) before we can definitely return an error.
This is particularly important for the next patch, which will allow the
data move path to move extents with checksum errors - we don't want to
accidentally introduce bitrot due to a transient error!
- bch2_bkey_pick_read_device() is substantially reworked, and
bch2_dev_io_failures is expanded to record more information about the
type of failure (i.e. number of checksum errors).
It now returns an error code that describes more precisely the reason
for the failure - checksum error, io error, or offline device, instead
of the previous generic "insufficient devices". This is important for
the next patches that add poisoning, as we only want to poison extents
when we've got real checksum errors (or perhaps IO errors?) - not
because a device was offline.
- Add a new option and superblock field for the number of checksum
retries.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Users have been asking for this, and now that errors are returned to the
top level read retry path - we can.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Next patch will be adding an additional retry loop for checksum errors,
so that we can rule out transient errors before marking an extent as
poisoned.
Prerequisite to this is returning errors to bch2_rbio_retry(); this will
also let us add a "successful retry" message.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Now that the read path uses proper error codes, we can get rid of the
weird rbio->hole signalling to the move path that the read didn't
happen.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
