mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-09-04 20:19:47 +08:00
ac12b7e291
8672 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
0ad9617c78 |
Networking changes for 6.14.
Core
----
- More core refactoring to reduce the RTNL lock contention,
including preparatory work for the per-network namespace RTNL lock,
replacing RTNL lock with a per device-one to protect NAPI-related
net device data and moving synchronize_net() calls outside such
lock.
- Extend drop reasons usage, adding net scheduler, AF_UNIX, bridge and
more specific TCP coverage.
- Reduce network namespace tear-down time by removing per-subsystems
synchronize_net() in tipc and sched.
- Add flow label selector support for fib rules, allowing traffic
redirection based on such header field.
Netfilter
---------
- Do not remove netdev basechain when last device is gone, allowing
netdev basechains without devices.
- Revisit the flowtable teardown strategy, dealing better with fin,
reset and re-open events.
- Scale-up IP-vs connection dumping by avoiding linear search on
each restart.
Protocols
---------
- A significant XDP socket refactor, consolidating and optimizing
several helpers into the core
- Better scaling of ICMP rate-limiting, by removing false-sharing in
inet peers handling.
- Introduces netlink notifications for multicast IPv4 and IPv6
address changes.
- Add ipsec support for IP-TFS/AggFrag encapsulation, allowing
aggregation and fragmentation of the inner IP.
- Add sysctl to configure TIME-WAIT reuse delay for TCP sockets,
to avoid local port exhaustion issues when the average connection
lifetime is very short.
- Support updating keys (re-keying) for connections using kernel
TLS (for TLS 1.3 only).
- Support ipv4-mapped ipv6 address clients in smc-r v2.
- Add support for jumbo data packet transmission in RxRPC sockets,
gluing multiple data packets in a single UDP packet.
- Support RxRPC RACK-TLP to manage packet loss and retransmission in
conjunction with the congestion control algorithm.
Driver API
----------
- Introduce a unified and structured interface for reporting PHY
statistics, exposing consistent data across different H/W via
ethtool.
- Make timestamping selectable, allow the user to select the desired
hwtstamp provider (PHY or MAC) administratively.
- Add support for configuring a header-data-split threshold (HDS)
value via ethtool, to deal with partial or buggy H/W implementation.
- Consolidate DSA drivers Energy Efficiency Ethernet support.
- Add EEE management to phylink, making use of the phylib
implementation.
- Add phylib support for in-band capabilities negotiation.
- Simplify how phylib-enabled mac drivers expose the supported
interfaces.
Tests and tooling
-----------------
- Make the YNL tool package-friendly to make it easier to deploy it
separately from the kernel.
- Increase TCP selftest coverage importing several packetdrill
test-cases.
- Regenerate the ethtool uapi header from the YNL spec,
to ease maintenance and future development.
- Add YNL support for decoding the link types used in net
self-tests, allowing a single build to run both net and
drivers/net.
Drivers
-------
- Ethernet high-speed NICs:
- nVidia/Mellanox (mlx5):
- add cross E-Switch QoS support
- add SW Steering support for ConnectX-8
- implement support for HW-Managed Flow Steering, improving the
rule deletion/insertion rate
- support for multi-host LAG
- Intel (ixgbe, ice, igb):
- ice: add support for devlink health events
- ixgbe: add initial support for E610 chipset variant
- igb: add support for AF_XDP zero-copy
- Meta:
- add support for basic RSS config
- allow changing the number of channels
- add hardware monitoring support
- Broadcom (bnxt):
- implement TCP data split and HDS threshold ethtool support,
enabling Device Memory TCP.
- Marvell Octeon:
- implement egress ipsec offload support for the cn10k family
- Hisilicon (HIBMC):
- implement unicast MAC filtering
- Ethernet NICs embedded and virtual:
- Convert UDP tunnel drivers to NETDEV_PCPU_STAT_DSTATS, avoiding
contented atomic operations for drop counters
- Freescale:
- quicc: phylink conversion
- enetc: support Tx and Rx checksum offload and improve TSO
performances
- MediaTek:
- airoha: introduce support for ETS and HTB Qdisc offload
- Microchip:
- lan78XX USB: preparation work for phylink conversion
- Synopsys (stmmac):
- support DWMAC IP on NXP Automotive SoCs S32G2xx/S32G3xx/S32R45
- refactor EEE support to leverage the new driver API
- optimize DMA and cache access to increase raw RX performances
by 40%
- TI:
- icssg-prueth: add multicast filtering support for VLAN
interface
- netkit:
- add ability to configure head/tailroom
- VXLAN:
- accepts packets with user-defined reserved bit
- Ethernet switches:
- Microchip:
- lan969x: add RGMII support
- lan969x: improve TX and RX performance using the FDMA engine
- nVidia/Mellanox:
- move Tx header handling to PCI driver, to ease XDP support
- Ethernet PHYs:
- Texas Instruments DP83822:
- add support for GPIO2 clock output
- Realtek:
- 8169: add support for RTL8125D rev.b
- rtl822x: add hwmon support for the temperature sensor
- Microchip:
- add support for RDS PTP hardware
- consolidate periodic output signal generation
- CAN:
- several DT-bindings to DT schema conversions
- tcan4x5x:
- add HW standby support
- support nWKRQ voltage selection
- kvaser:
- allowing Bus Error Reporting runtime configuration
- WiFi:
- the on-going Multi-Link Operation (MLO) effort continues, affecting
both the stack and in drivers
- mac80211/cfg80211:
- Emergency Preparedness Communication Services (EPCS) station mode
support
- support for adding and removing station links for MLO
- add support for WiFi 7/EHT mesh over 320 MHz channels
- report Tx power info for each link
- RealTek (rtw88):
- enable USB Rx aggregation and USB 3 to improve performance
- LED support
- RealTek (rtw89):
- refactor power save to support Multi-Link Operations
- add support for RTL8922AE-VS variant
- MediaTek (mt76):
- single wiphy multiband support (preparation for MLO)
- p2p device support
- add TP-Link TXE50UH USB adapter support
- Qualcomm (ath10k):
- support for the QCA6698AQ IP core
- Qualcomm (ath12k):
- enable MLO for QCN9274
- Bluetooth:
- Allow sysfs to trigger hdev reset, to allow recovering devices
not responsive from user-space
- MediaTek: add support for MT7922, MT7925, MT7921e devices
- Realtek: add support for RTL8851BE devices
- Qualcomm: add support for WCN785x devices
- ISO: allow BIG re-sync
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
"This is slightly smaller than usual, with the most interesting work
being still around RTNL scope reduction.
Core:
- More core refactoring to reduce the RTNL lock contention, including
preparatory work for the per-network namespace RTNL lock, replacing
RTNL lock with a per device-one to protect NAPI-related net device
data and moving synchronize_net() calls outside such lock.
- Extend drop reasons usage, adding net scheduler, AF_UNIX, bridge
and more specific TCP coverage.
- Reduce network namespace tear-down time by removing per-subsystems
synchronize_net() in tipc and sched.
- Add flow label selector support for fib rules, allowing traffic
redirection based on such header field.
Netfilter:
- Do not remove netdev basechain when last device is gone, allowing
netdev basechains without devices.
- Revisit the flowtable teardown strategy, dealing better with fin,
reset and re-open events.
- Scale-up IP-vs connection dumping by avoiding linear search on each
restart.
Protocols:
- A significant XDP socket refactor, consolidating and optimizing
several helpers into the core
- Better scaling of ICMP rate-limiting, by removing false-sharing in
inet peers handling.
- Introduces netlink notifications for multicast IPv4 and IPv6
address changes.
- Add ipsec support for IP-TFS/AggFrag encapsulation, allowing
aggregation and fragmentation of the inner IP.
- Add sysctl to configure TIME-WAIT reuse delay for TCP sockets, to
avoid local port exhaustion issues when the average connection
lifetime is very short.
- Support updating keys (re-keying) for connections using kernel TLS
(for TLS 1.3 only).
- Support ipv4-mapped ipv6 address clients in smc-r v2.
- Add support for jumbo data packet transmission in RxRPC sockets,
gluing multiple data packets in a single UDP packet.
- Support RxRPC RACK-TLP to manage packet loss and retransmission in
conjunction with the congestion control algorithm.
Driver API:
- Introduce a unified and structured interface for reporting PHY
statistics, exposing consistent data across different H/W via
ethtool.
- Make timestamping selectable, allow the user to select the desired
hwtstamp provider (PHY or MAC) administratively.
- Add support for configuring a header-data-split threshold (HDS)
value via ethtool, to deal with partial or buggy H/W
implementation.
- Consolidate DSA drivers Energy Efficiency Ethernet support.
- Add EEE management to phylink, making use of the phylib
implementation.
- Add phylib support for in-band capabilities negotiation.
- Simplify how phylib-enabled mac drivers expose the supported
interfaces.
Tests and tooling:
- Make the YNL tool package-friendly to make it easier to deploy it
separately from the kernel.
- Increase TCP selftest coverage importing several packetdrill
test-cases.
- Regenerate the ethtool uapi header from the YNL spec, to ease
maintenance and future development.
- Add YNL support for decoding the link types used in net self-tests,
allowing a single build to run both net and drivers/net.
Drivers:
- Ethernet high-speed NICs:
- nVidia/Mellanox (mlx5):
- add cross E-Switch QoS support
- add SW Steering support for ConnectX-8
- implement support for HW-Managed Flow Steering, improving the
rule deletion/insertion rate
- support for multi-host LAG
- Intel (ixgbe, ice, igb):
- ice: add support for devlink health events
- ixgbe: add initial support for E610 chipset variant
- igb: add support for AF_XDP zero-copy
- Meta:
- add support for basic RSS config
- allow changing the number of channels
- add hardware monitoring support
- Broadcom (bnxt):
- implement TCP data split and HDS threshold ethtool support,
enabling Device Memory TCP.
- Marvell Octeon:
- implement egress ipsec offload support for the cn10k family
- Hisilicon (HIBMC):
- implement unicast MAC filtering
- Ethernet NICs embedded and virtual:
- Convert UDP tunnel drivers to NETDEV_PCPU_STAT_DSTATS, avoiding
contented atomic operations for drop counters
- Freescale:
- quicc: phylink conversion
- enetc: support Tx and Rx checksum offload and improve TSO
performances
- MediaTek:
- airoha: introduce support for ETS and HTB Qdisc offload
- Microchip:
- lan78XX USB: preparation work for phylink conversion
- Synopsys (stmmac):
- support DWMAC IP on NXP Automotive SoCs S32G2xx/S32G3xx/S32R45
- refactor EEE support to leverage the new driver API
- optimize DMA and cache access to increase raw RX performances
by 40%
- TI:
- icssg-prueth: add multicast filtering support for VLAN
interface
- netkit:
- add ability to configure head/tailroom
- VXLAN:
- accepts packets with user-defined reserved bit
- Ethernet switches:
- Microchip:
- lan969x: add RGMII support
- lan969x: improve TX and RX performance using the FDMA engine
- nVidia/Mellanox:
- move Tx header handling to PCI driver, to ease XDP support
- Ethernet PHYs:
- Texas Instruments DP83822:
- add support for GPIO2 clock output
- Realtek:
- 8169: add support for RTL8125D rev.b
- rtl822x: add hwmon support for the temperature sensor
- Microchip:
- add support for RDS PTP hardware
- consolidate periodic output signal generation
- CAN:
- several DT-bindings to DT schema conversions
- tcan4x5x:
- add HW standby support
- support nWKRQ voltage selection
- kvaser:
- allowing Bus Error Reporting runtime configuration
- WiFi:
- the on-going Multi-Link Operation (MLO) effort continues,
affecting both the stack and in drivers
- mac80211/cfg80211:
- Emergency Preparedness Communication Services (EPCS) station
mode support
- support for adding and removing station links for MLO
- add support for WiFi 7/EHT mesh over 320 MHz channels
- report Tx power info for each link
- RealTek (rtw88):
- enable USB Rx aggregation and USB 3 to improve performance
- LED support
- RealTek (rtw89):
- refactor power save to support Multi-Link Operations
- add support for RTL8922AE-VS variant
- MediaTek (mt76):
- single wiphy multiband support (preparation for MLO)
- p2p device support
- add TP-Link TXE50UH USB adapter support
- Qualcomm (ath10k):
- support for the QCA6698AQ IP core
- Qualcomm (ath12k):
- enable MLO for QCN9274
- Bluetooth:
- Allow sysfs to trigger hdev reset, to allow recovering devices
not responsive from user-space
- MediaTek: add support for MT7922, MT7925, MT7921e devices
- Realtek: add support for RTL8851BE devices
- Qualcomm: add support for WCN785x devices
- ISO: allow BIG re-sync"
* tag 'net-next-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1386 commits)
net/rose: prevent integer overflows in rose_setsockopt()
net: phylink: fix regression when binding a PHY
net: ethernet: ti: am65-cpsw: streamline TX queue creation and cleanup
net: ethernet: ti: am65-cpsw: streamline RX queue creation and cleanup
net: ethernet: ti: am65-cpsw: ensure proper channel cleanup in error path
ipv6: Convert inet6_rtm_deladdr() to per-netns RTNL.
ipv6: Convert inet6_rtm_newaddr() to per-netns RTNL.
ipv6: Move lifetime validation to inet6_rtm_newaddr().
ipv6: Set cfg.ifa_flags before device lookup in inet6_rtm_newaddr().
ipv6: Pass dev to inet6_addr_add().
ipv6: Convert inet6_ioctl() to per-netns RTNL.
ipv6: Hold rtnl_net_lock() in addrconf_init() and addrconf_cleanup().
ipv6: Hold rtnl_net_lock() in addrconf_dad_work().
ipv6: Hold rtnl_net_lock() in addrconf_verify_work().
ipv6: Convert net.ipv6.conf.${DEV}.XXX sysctl to per-netns RTNL.
ipv6: Add __in6_dev_get_rtnl_net().
net: stmmac: Drop redundant skb_mark_for_recycle() for SKB frags
net: mii: Fix the Speed display when the network cable is not connected
sysctl net: Remove macro checks for CONFIG_SYSCTL
eth: bnxt: update header sizing defaults
...
|
||
|
Linus Torvalds
|
d0f93ac2c3 |
Documentation changes this time around include:
- Quite a bit of Chinese and Spanish translation work. - Clarifying that Git commit IDs >12chars are OK - A new nvme-multipath document - A reorganization of the admin-guide top-level page to make it readable - Clarification of the role of Acked-by and maintainer discretion on their acceptance. - Some reorganization of debugging-oriented docs. ...and typo fixes, documentation updates, etc. as usual. -----BEGIN PGP SIGNATURE----- iQFDBAABCAAtFiEEIw+MvkEiF49krdp9F0NaE2wMflgFAmeOp8EPHGNvcmJldEBs d24ubmV0AAoJEBdDWhNsDH5YipUH/iffvlVYuqoVdPUFWdmsiNjwOCRE2MIfp8qO tPTRRHJAny+NlFT0IWlGUbLNoNXtvpN47YlkaeAjdrsjASerfpwzje7t4Z1B+jWT 0YwGBCvDIGasfRCx7D14+w5aqkEEynfsy+QurwcuDxcHMQGwt7ZCuTNOVO6BULEr L++BMwqapUr5IemP4ItQqDVVF9sp6bWEhaOnTTJCLU6oG23uUSSA/59sJmwDJUk7 6J3VGO1An4Jte9WX7qkVrSBNO5cOOhaFiFXIeNxfOioOPctBwxKiHDJnzVud8ipz R+tnUI/8hEvyJ7GZFezyZxmMnFs0P2DEYAkaN+hBs/nUjx0dKUg= =YxaS -----END PGP SIGNATURE----- Merge tag 'docs-6.14' of git://git.lwn.net/linux Pull Documentation updates from Jonathan Corbet: - Quite a bit of Chinese and Spanish translation work - Clarifying that Git commit IDs >12chars are OK - A new nvme-multipath document - A reorganization of the admin-guide top-level page to make it readable - Clarification of the role of Acked-by and maintainer discretion on their acceptance - Some reorganization of debugging-oriented docs ... and typo fixes, documentation updates, etc as usual * tag 'docs-6.14' of git://git.lwn.net/linux: (50 commits) Documentation: Fix x86_64 UEFI outdated references to elilo Documentation/sysctl: Add timer_migration to kernel.rst docs/mm: Physical memory: Remove zone_t docs: submitting-patches: clarify that signers may use their discretion on tags docs: submitting-patches: clarify difference between Acked-by and Reviewed-by docs: submitting-patches: clarify Acked-by and introduce "# Suffix" Documentation: bug-hunting.rst: remove odd contact information docs/zh_CN: Add sak index Chinese translation doc: module: DEFAULT_SYMBOL_NAMESPACE must be defined before #includes doc: module: Fix documented type of namespace Documentation/kernel-parameters: Fix a reference to vga-softcursor.rst docs/zh_CN: Add landlock index Chinese translation Documentation: Fix typo localmodonfig -> localmodconfig overlayfs.rst: Fix and improve grammar docs/zh_CN: Add siphash index Chinese translation docs/zh_CN: Add security IMA-templates Chinese translation docs/zh_CN: Add security digsig Chinese translation Align git commit ID abbreviation guidelines and checks docs: process: submitting-patches: split canonical patch format section docs/zh_CN: Add security lsm Chinese translation ... |
||
|
Linus Torvalds
|
e3610441d1 |
Rust changes for v6.14
Toolchain and infrastructure:
- Finish the move to custom FFI integer types started in the previous
cycle and finally map 'long' to 'isize' and 'char' to 'u8'. Do a few
cleanups on top thanks to that.
- Start to use 'derive(CoercePointee)' on Rust >= 1.84.0.
This is a major milestone on the path to build the kernel using only
stable Rust features. In particular, previously we were using the
unstable features 'coerce_unsized', 'dispatch_from_dyn' and 'unsize',
and now we will use the new 'derive_coerce_pointee' one, which is on
track to stabilization. This new feature is a macro that essentially
expands into code that internally uses the unstable features that we
were using before, without having to expose those.
With it, stable Rust users, including the kernel, will be able to
build custom smart pointers that work with trait objects, e.g.:
fn f(p: &Arc<dyn Display>) {
pr_info!("{p}\n");
}
let a: Arc<dyn Display> = Arc::new(42i32, GFP_KERNEL)?;
let b: Arc<dyn Display> = Arc::new("hello there", GFP_KERNEL)?;
f(&a); // Prints "42".
f(&b); // Prints "hello there".
Together with the 'arbitrary_self_types' feature that we started
using in the previous cycle, using our custom smart pointers like
'Arc' will eventually only rely in stable Rust.
- Introduce 'PROCMACROLDFLAGS' environment variable to allow to link
Rust proc macros using different flags than those used for linking
Rust host programs (e.g. when 'rustc' uses a different C library
than the host programs' one), which Android needs.
- Help kernel builds under macOS with Rust enabled by accomodating
other naming conventions for dynamic libraries (i.e. '.so' vs.
'.dylib') which are used for Rust procedural macros. The actual
support for macOS (i.e. the rest of the pieces needed) is provided
out-of-tree by others, following the policy used for other parts of
the kernel by Kbuild.
- Run Clippy for 'rusttest' code too and clean the bits it spotted.
- Provide Clippy with the minimum supported Rust version to improve
the suggestions it gives.
- Document 'bindgen' 0.71.0 regression.
'kernel' crate:
- 'build_error!': move users of the hidden function to the documented
macro, prevent such uses in the future by moving the function
elsewhere and add the macro to the prelude.
- 'types' module: add improved version of 'ForeignOwnable::borrow_mut'
(which was removed in the past since it was problematic); change
'ForeignOwnable' pointer type to '*mut'.
- 'alloc' module: implement 'Display' for 'Box' and align the 'Debug'
implementation to it; add example (doctest) for 'ArrayLayout::new()'.
- 'sync' module: document 'PhantomData' in 'Arc'; use
'NonNull::new_unchecked' in 'ForeignOwnable for Arc' impl.
- 'uaccess' module: accept 'Vec's with different allocators in
'UserSliceReader::read_all'.
- 'workqueue' module: enable run-testing a couple more doctests.
- 'error' module: simplify 'from_errno()'.
- 'block' module: fix formatting in code documentation (a lint to catch
these is being implemented).
- Avoid 'unwrap()'s in doctests, which also improves the examples by
showing how kernel code is supposed to be written.
- Avoid 'as' casts with 'cast{,_mut}' calls which are a bit safer.
And a few other cleanups.
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Merge tag 'rust-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux
Pull rust updates from Miguel Ojeda:
"Toolchain and infrastructure:
- Finish the move to custom FFI integer types started in the previous
cycle and finally map 'long' to 'isize' and 'char' to 'u8'. Do a
few cleanups on top thanks to that.
- Start to use 'derive(CoercePointee)' on Rust >= 1.84.0.
This is a major milestone on the path to build the kernel using
only stable Rust features. In particular, previously we were using
the unstable features 'coerce_unsized', 'dispatch_from_dyn' and
'unsize', and now we will use the new 'derive_coerce_pointee' one,
which is on track to stabilization. This new feature is a macro
that essentially expands into code that internally uses the
unstable features that we were using before, without having to
expose those.
With it, stable Rust users, including the kernel, will be able to
build custom smart pointers that work with trait objects, e.g.:
fn f(p: &Arc<dyn Display>) {
pr_info!("{p}\n");
}
let a: Arc<dyn Display> = Arc::new(42i32, GFP_KERNEL)?;
let b: Arc<dyn Display> = Arc::new("hello there", GFP_KERNEL)?;
f(&a); // Prints "42".
f(&b); // Prints "hello there".
Together with the 'arbitrary_self_types' feature that we started
using in the previous cycle, using our custom smart pointers like
'Arc' will eventually only rely in stable Rust.
- Introduce 'PROCMACROLDFLAGS' environment variable to allow to link
Rust proc macros using different flags than those used for linking
Rust host programs (e.g. when 'rustc' uses a different C library
than the host programs' one), which Android needs.
- Help kernel builds under macOS with Rust enabled by accomodating
other naming conventions for dynamic libraries (i.e. '.so' vs.
'.dylib') which are used for Rust procedural macros. The actual
support for macOS (i.e. the rest of the pieces needed) is provided
out-of-tree by others, following the policy used for other parts of
the kernel by Kbuild.
- Run Clippy for 'rusttest' code too and clean the bits it spotted.
- Provide Clippy with the minimum supported Rust version to improve
the suggestions it gives.
- Document 'bindgen' 0.71.0 regression.
'kernel' crate:
- 'build_error!': move users of the hidden function to the documented
macro, prevent such uses in the future by moving the function
elsewhere and add the macro to the prelude.
- 'types' module: add improved version of 'ForeignOwnable::borrow_mut'
(which was removed in the past since it was problematic); change
'ForeignOwnable' pointer type to '*mut'.
- 'alloc' module: implement 'Display' for 'Box' and align the 'Debug'
implementation to it; add example (doctest) for 'ArrayLayout::new()'
- 'sync' module: document 'PhantomData' in 'Arc'; use
'NonNull::new_unchecked' in 'ForeignOwnable for Arc' impl.
- 'uaccess' module: accept 'Vec's with different allocators in
'UserSliceReader::read_all'.
- 'workqueue' module: enable run-testing a couple more doctests.
- 'error' module: simplify 'from_errno()'.
- 'block' module: fix formatting in code documentation (a lint to catch
these is being implemented).
- Avoid 'unwrap()'s in doctests, which also improves the examples by
showing how kernel code is supposed to be written.
- Avoid 'as' casts with 'cast{,_mut}' calls which are a bit safer.
And a few other cleanups"
* tag 'rust-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: (32 commits)
kbuild: rust: add PROCMACROLDFLAGS
rust: uaccess: generalize userSliceReader to support any Vec
rust: kernel: add improved version of `ForeignOwnable::borrow_mut`
rust: kernel: reorder `ForeignOwnable` items
rust: kernel: change `ForeignOwnable` pointer to mut
rust: arc: split unsafe block, add missing comment
rust: types: avoid `as` casts
rust: arc: use `NonNull::new_unchecked`
rust: use derive(CoercePointee) on rustc >= 1.84.0
rust: alloc: add doctest for `ArrayLayout::new()`
rust: init: update `stack_try_pin_init` examples
rust: error: import `kernel`'s `LayoutError` instead of `core`'s
rust: str: replace unwraps with question mark operators
rust: page: remove unnecessary helper function from doctest
rust: rbtree: remove unwrap in asserts
rust: init: replace unwraps with question mark operators
rust: use host dylib naming convention to support macOS
rust: add `build_error!` to the prelude
rust: kernel: move `build_error` hidden function to prevent mistakes
rust: use the `build_error!` macro, not the hidden function
...
|
||
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Linus Torvalds
|
c0e75905ca |
Updates to scipts/sorttable for 6.14:
The sorttable.c was a copy from recordmcount.c which is very hard to maintain. That's because it uses macro helpers and places the code in a header file sorttable.h to handle both the 64 bit and 32 bit version of the Elf structures. It also uses _r()/r()/r2() wrappers around accessing the data which will read the 64 bit or 32 bit version of the data as well as handle endianess. If the wrong wrapper is used, an invalid value will result, and this has been a cause for bugs in the past. In fact the new ORC code doesn't even use it. That's fine because ORC is only for 64 bit x86 which is the default parsing. Instead of having a bunch of macros defined and then include the code twice from a header, the Elf structures are each wrapped in a union. The union holds the 64 bit and 32 bit version of the needed structure. Then a structure of function pointers is used, along with helper macros to access the ELF types appropriately for their byte size and endianess. How to reference the data fields is moved from the code that implements the sorting to the helper functions where all accesses to a field will use he same helper function. As long as the helper functions access the fields correctly, the code will also access the fields. This is an improvement over having to code implementing the sorting having to make sure it always uses the right accessor function when reading an ELF field. This is a clean up only, the functionality of the scripts/sorttable.c does not change. -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCZ5AO2RQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qj6pAQDAHA3mtawVYgq/Kw8OAc6r2NLP5Q58 8nptwPVoATomLgEA2HO38cu1N8Fxg+zMgQ4L9eYfa0QdE3XKD0WNbG4x7wE= =go8s -----END PGP SIGNATURE----- Merge tag 'trace-sorttable-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull scipts/sorttable updates from Steven Rostedt: "The sorttable.c was a copy from recordmcount.c which is very hard to maintain. That's because it uses macro helpers and places the code in a header file sorttable.h to handle both the 64 bit and 32 bit version of the Elf structures. It also uses _r()/r()/r2() wrappers around accessing the data which will read the 64 bit or 32 bit version of the data as well as handle endianess. If the wrong wrapper is used, an invalid value will result, and this has been a cause for bugs in the past. In fact the new ORC code doesn't even use it. That's fine because ORC is only for 64 bit x86 which is the default parsing. Instead of having a bunch of macros defined and then include the code twice from a header, the Elf structures are each wrapped in a union. The union holds the 64 bit and 32 bit version of the needed structure. Then a structure of function pointers is used, along with helper macros to access the ELF types appropriately for their byte size and endianess. How to reference the data fields is moved from the code that implements the sorting to the helper functions where all accesses to a field will use he same helper function. As long as the helper functions access the fields correctly, the code will also access the fields. This is an improvement over having to code implementing the sorting having to make sure it always uses the right accessor function when reading an ELF field. This is a clean up only, the functionality of the scripts/sorttable.c does not change" * tag 'trace-sorttable-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: scripts/sorttable: Use a structure of function pointers for elf helpers scripts/sorttable: Get start/stop_mcount_loc from ELF file directly scripts/sorttable: Move code from sorttable.h into sorttable.c scripts/sorttable: Use uint64_t for mcount sorting scripts/sorttable: Add helper functions for Elf_Sym scripts/sorttable: Add helper functions for Elf_Shdr scripts/sorttable: Add helper functions for Elf_Ehdr scripts/sorttable: Convert Elf_Sym MACRO over to a union scripts/sorttable: Replace Elf_Shdr Macro with a union scripts/sorttable: Convert Elf_Ehdr to union scripts/sorttable: Make compare_extable() into two functions scripts/sorttable: Have the ORC code use the _r() functions to read scripts/sorttable: Remove unneeded Elf_Rel scripts/sorttable: Remove unused write functions scripts/sorttable: Remove unused macro defines |
||
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Linus Torvalds
|
8838a1a2d2 |
Locking changes for v6.14:
- Lockdep:
- Improve and fix lockdep bitsize limits, clarify the Kconfig
documentation (Carlos Llamas)
- Fix lockdep build warning on Clang related to
chain_hlock_class_idx() inlining (Andy Shevchenko)
- Relax the requirements of PROVE_RAW_LOCK_NESTING arch support
by not tying it to ARCH_SUPPORTS_RT unnecessarily (Waiman Long)
- Rust integration:
- Support lock pointers managed by the C side (Lyude Paul)
- Support guard types (Lyude Paul)
- Update MAINTAINERS file filters to include the
Rust locking code (Boqun Feng)
- Wake-queues:
- Add raw_spin_*wake() helpers to simplify locking code (John Stultz)
- SMP cross-calls:
- Fix potential data update race by evaluating the local cond_func()
before IPI side-effects (Mathieu Desnoyers)
- Guard primitives:
- Ease [c]tags based searches by including the cleanup/guard type
primitives (Peter Zijlstra)
- ww_mutexes:
- Simplify the ww_mutex self-test code via swap() (Thorsten Blum)
- Static calls:
- Update the static calls MAINTAINERS file-pattern (Jiri Slaby)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2025-01-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
"Lockdep:
- Improve and fix lockdep bitsize limits, clarify the Kconfig
documentation (Carlos Llamas)
- Fix lockdep build warning on Clang related to
chain_hlock_class_idx() inlining (Andy Shevchenko)
- Relax the requirements of PROVE_RAW_LOCK_NESTING arch support by
not tying it to ARCH_SUPPORTS_RT unnecessarily (Waiman Long)
Rust integration:
- Support lock pointers managed by the C side (Lyude Paul)
- Support guard types (Lyude Paul)
- Update MAINTAINERS file filters to include the Rust locking code
(Boqun Feng)
Wake-queues:
- Add raw_spin_*wake() helpers to simplify locking code (John Stultz)
SMP cross-calls:
- Fix potential data update race by evaluating the local cond_func()
before IPI side-effects (Mathieu Desnoyers)
Guard primitives:
- Ease [c]tags based searches by including the cleanup/guard type
primitives (Peter Zijlstra)
ww_mutexes:
- Simplify the ww_mutex self-test code via swap() (Thorsten Blum)
Static calls:
- Update the static calls MAINTAINERS file-pattern (Jiri Slaby)"
* tag 'locking-core-2025-01-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
MAINTAINERS: Add static_call_inline.c to STATIC BRANCH/CALL
cleanup, tags: Create tags for the cleanup primitives
sched/wake_q: Add helper to call wake_up_q after unlock with preemption disabled
rust: sync: Add lock::Backend::assert_is_held()
rust: sync: Add SpinLockGuard type alias
rust: sync: Add MutexGuard type alias
rust: sync: Make Guard::new() public
rust: sync: Add Lock::from_raw() for Lock<(), B>
locking: MAINTAINERS: Start watching Rust locking primitives
lockdep: Move lockdep_assert_locked() under #ifdef CONFIG_PROVE_LOCKING
lockdep: Mark chain_hlock_class_idx() with __maybe_unused
lockdep: Document MAX_LOCKDEP_CHAIN_HLOCKS calculation
lockdep: Clarify size for LOCKDEP_*_BITS configs
lockdep: Fix upper limit for LOCKDEP_*_BITS configs
locking/ww_mutex/test: Use swap() macro
smp/scf: Evaluate local cond_func() before IPI side-effects
locking/lockdep: Enforce PROVE_RAW_LOCK_NESTING only if ARCH_SUPPORTS_RT
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||
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Jakub Kicinski
|
2ee738e90e |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.13-rc8). Conflicts: drivers/net/ethernet/realtek/r8169_main.c |
||
|
Luca Ceresoli
|
2bff77c665 |
scripts/decode_stacktrace.sh: fix decoding of lines with an additional info
Since commit |
||
|
Peter Zijlstra
|
a937f384c9 |
cleanup, tags: Create tags for the cleanup primitives
Oleg reported that it is hard to find the definition of things like: __free(argv) without having to do 'git grep "DEFINE_FREE(argv,"'. Add tag generation for the various macros in cleanup.h. Notably 'DEFINE_FREE(argv, ...)' will now generate a 'cleanup_argv' tag, while all the others, eg. 'DEFINE_GUARD(mutex, ...)' will generate 'class_mutex' like tags. Reported-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20250106102647.GB20870@noisy.programming.kicks-ass.net |
||
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Steven Rostedt
|
1e5f6771c2 |
scripts/sorttable: Use a structure of function pointers for elf helpers
Instead of having a series of function pointers that gets assigned to the Elf64 or Elf32 versions, put them all into a single structure and use that. Add the helper function that chooses the structure into the macros that build the different versions of the elf functions. Link: https://lore.kernel.org/all/CAHk-=wiafEyX7UgOeZgvd6fvuByE5WXUPh9599kwOc_d-pdeug@mail.gmail.com/ Cc: bpf <bpf@vger.kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nicolas Schier <nicolas@fjasle.eu> Cc: Zheng Yejian <zhengyejian1@huawei.com> Cc: Martin Kelly <martin.kelly@crowdstrike.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Link: https://lore.kernel.org/20250110075459.13d4b94c@gandalf.local.home Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
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Jakub Kicinski
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14ea4cd1b1 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.13-rc7). Conflicts: |
||
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Tamir Duberstein
|
0730422bce |
rust: use host dylib naming convention to support macOS
Because the `macros` crate exposes procedural macros, it must be compiled as a dynamic library (so it can be loaded by the compiler at compile-time). Before this change the resulting artifact was always named `libmacros.so`, which works on hosts where this matches the naming convention for dynamic libraries. However the proper name on macOS would be `libmacros.dylib`. This turns out to matter even when the dependency is passed with a path (`--extern macros=path/to/libmacros.so` rather than `--extern macros`) because rustc uses the file name to infer the type of the library (see link). This is because there's no way to specify both the path to and the type of the external library via CLI flags. The compiler could speculatively parse the file to determine its type, but it does not do so today. This means that libraries that match neither rustc's naming convention for static libraries nor the platform's naming convention for dynamic libraries are *rejected*. The only solution I've found is to follow the host platform's naming convention. This patch does that by querying the compiler to determine the appropriate name for the artifact. This allows the kernel to build with CONFIG_RUST=y on macOS. Link: https://github.com/rust-lang/rust/blob/d829780/compiler/rustc_metadata/src/locator.rs#L728-L752 Tested-by: Daniel Gomez <da.gomez@samsung.com> Co-developed-by: Fiona Behrens <me@kloenk.dev> Signed-off-by: Fiona Behrens <me@kloenk.dev> Signed-off-by: Tamir Duberstein <tamird@gmail.com> Tested-by: Andreas Hindborg <a.hindborg@kernel.org> Link: https://lore.kernel.org/r/20241216-b4-dylib-host-macos-v7-1-cfc507681447@gmail.com [ Added `MAKEFLAGS=`s to avoid jobserver warnings. Removed space. Reworded title. - Miguel ] Signed-off-by: Miguel Ojeda <ojeda@kernel.org> |
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Miguel Ojeda
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c23d1f7e15 |
rust: document bindgen 0.71.0 regression
`bindgen` 0.71.0 regressed [1] on the "`--version` requires header" issue which appeared in 0.69.0 first [2] and was fixed in 0.69.1. It has been fixed again in 0.71.1 [3]. Thus document it so that, when we upgrade the minimum past 0.69.0 in the future, we do not forget that we cannot remove the workaround until we arrive at 0.71.1 at least. Link: https://github.com/rust-lang/rust-bindgen/issues/3039 [1] Link: https://github.com/rust-lang/rust-bindgen/issues/2677 [2] Link: https://github.com/rust-lang/rust-bindgen/blob/main/CHANGELOG.md#v0711-2024-12-09 [3] Reviewed-by: Fiona Behrens <me@kloenk.dev> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Link: https://lore.kernel.org/r/20241209212544.1977065-1-ojeda@kernel.org Signed-off-by: Miguel Ojeda <ojeda@kernel.org> |
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Steven Rostedt
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4acda8edef |
scripts/sorttable: Get start/stop_mcount_loc from ELF file directly
The get_mcount_loc() does a cheesy trick to find the start_mcount_loc and
stop_mcount_loc values. That trick is:
file_start = popen(" grep start_mcount System.map | awk '{print $1}' ", "r");
and
file_stop = popen(" grep stop_mcount System.map | awk '{print $1}' ", "r");
Those values are stored in the Elf symbol table. Use that to capture those
values. Using the symbol table is more efficient and more robust. The
above could fail if another variable had "start_mcount" or "stop_mcount"
as part of its name.
Cc: bpf <bpf@vger.kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nicolas Schier <nicolas@fjasle.eu>
Cc: Zheng Yejian <zhengyejian1@huawei.com>
Cc: Martin Kelly <martin.kelly@crowdstrike.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/20250105162346.817157047@goodmis.org
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
|
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Steven Rostedt
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58d87678a0 |
scripts/sorttable: Move code from sorttable.h into sorttable.c
Instead of having the main code live in a header file and included twice with MACROs that define the Elf structures for 64 bit or 32 bit, move the code in the C file now that the Elf structures are defined in a union that has both. All accesses to the Elf structure fields are done through helper function pointers. If the file being parsed if for a 64 bit architecture, all the helper functions point to the 64 bit versions to retrieve the Elf fields. The same is true if the architecture is 32 bit, where the function pointers will point to the 32 bit helper functions. Note, when the value of a field can be either 32 bit or 64 bit, a 64 bit is always returned, as it works for the 32 bit code as well. This makes the code easier to read and maintain, and it now all exists in sorttable.c and sorttable.h may be removed. Cc: bpf <bpf@vger.kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nicolas Schier <nicolas@fjasle.eu> Cc: Zheng Yejian <zhengyejian1@huawei.com> Cc: Martin Kelly <martin.kelly@crowdstrike.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Link: https://lore.kernel.org/20250107223217.6f7f96a5@gandalf.local.home Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
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Steven Rostedt
|
1b649e6ab8 |
scripts/sorttable: Use uint64_t for mcount sorting
The mcount sorting defines uint_t to uint64_t on 64bit architectures and uint32_t on 32bit architectures. It can work with just using uint64_t as that will hold the values of both, and they are not used to point into the ELF file. sizeof(uint_t) is used for defining the size of the mcount_loc section. Instead of using a type, define long_size and use that instead. This will allow the header code to be moved into the C file as generic functions and not need to include sorttable.h twice, once for 64bit and once for 32bit. Cc: bpf <bpf@vger.kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nicolas Schier <nicolas@fjasle.eu> Cc: Zheng Yejian <zhengyejian1@huawei.com> Cc: Martin Kelly <martin.kelly@crowdstrike.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lore.kernel.org/20250105162346.373528925@goodmis.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
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Steven Rostedt
|
17bed33ac1 |
scripts/sorttable: Add helper functions for Elf_Sym
In order to remove the double #include of sorttable.h for 64 and 32 bit to create duplicate functions, add helper functions for Elf_Sym. This will create a function pointer for each helper that will get assigned to the appropriate function to handle either the 64bit or 32bit version. This also removes the last references of etype and _r() macros from the sorttable.h file as their references are now just defined in the appropriate architecture version of the helper functions. All read functions now exist in the helper functions which makes it easier to maintain, as the helper functions define the necessary architecture sizes. Cc: bpf <bpf@vger.kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nicolas Schier <nicolas@fjasle.eu> Cc: Zheng Yejian <zhengyejian1@huawei.com> Cc: Martin Kelly <martin.kelly@crowdstrike.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lore.kernel.org/20250105162346.185740651@goodmis.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
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Steven Rostedt
|
67afb7f504 |
scripts/sorttable: Add helper functions for Elf_Shdr
In order to remove the double #include of sorttable.h for 64 and 32 bit to create duplicate functions, add helper functions for Elf_Shdr. This will create a function pointer for each helper that will get assigned to the appropriate function to handle either the 64bit or 32bit version. This also moves the _r()/r() wrappers for the Elf_Shdr references that handle endian and size differences between the different architectures, into the helper function and out of the open code which is more error prone. Cc: bpf <bpf@vger.kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nicolas Schier <nicolas@fjasle.eu> Cc: Zheng Yejian <zhengyejian1@huawei.com> Cc: Martin Kelly <martin.kelly@crowdstrike.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lore.kernel.org/20250105162345.940924221@goodmis.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Steven Rostedt
|
1dfb59a228 |
scripts/sorttable: Add helper functions for Elf_Ehdr
In order to remove the double #include of sorttable.h for 64 and 32 bit to create duplicate functions, add helper functions for Elf_Ehdr. This will create a function pointer for each helper that will get assigned to the appropriate function to handle either the 64bit or 32bit version. This also moves the _r()/r() wrappers for the Elf_Ehdr references that handle endian and size differences between the different architectures, into the helper function and out of the open code which is more error prone. Cc: bpf <bpf@vger.kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nicolas Schier <nicolas@fjasle.eu> Cc: Zheng Yejian <zhengyejian1@huawei.com> Cc: Martin Kelly <martin.kelly@crowdstrike.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lore.kernel.org/20250105162345.736369526@goodmis.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Steven Rostedt
|
200d015e73 |
scripts/sorttable: Convert Elf_Sym MACRO over to a union
In order to remove the double #include of sorttable.h for 64 and 32 bit to create duplicate functions for both, replace the Elf_Sym macro with a union that defines both Elf64_Sym and Elf32_Sym, with field e64 for the 64bit version, and e32 for the 32bit version. It can then use the macro etype to get the proper value. This will eventually be replaced with just single functions that can handle both 32bit and 64bit ELF parsing. Cc: bpf <bpf@vger.kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nicolas Schier <nicolas@fjasle.eu> Cc: Zheng Yejian <zhengyejian1@huawei.com> Cc: Martin Kelly <martin.kelly@crowdstrike.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lore.kernel.org/20250105162345.528626969@goodmis.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Steven Rostedt
|
545f6cf8f4 |
scripts/sorttable: Replace Elf_Shdr Macro with a union
In order to remove the double #include of sorttable.h for 64 and 32 bit to create duplicate functions for both, replace the Elf_Shdr macro with a union that defines both Elf64_Shdr and Elf32_Shdr, with field e64 for the 64bit version, and e32 for the 32bit version. It can then use the macro etype to get the proper value. This will eventually be replaced with just single functions that can handle both 32bit and 64bit ELF parsing. Cc: bpf <bpf@vger.kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nicolas Schier <nicolas@fjasle.eu> Cc: Zheng Yejian <zhengyejian1@huawei.com> Cc: Martin Kelly <martin.kelly@crowdstrike.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lore.kernel.org/20250105162345.339462681@goodmis.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Steven Rostedt
|
157fb5b3cf |
scripts/sorttable: Convert Elf_Ehdr to union
In order to remove the double #include of sorttable.h for 64 and 32 bit to create duplicate functions for both, replace the Elf_Ehdr macro with a union that defines both Elf64_Ehdr and Elf32_Ehdr, with field e64 for the 64bit version, and e32 for the 32bit version. Then a macro etype can be used instead to get to the proper value. This will eventually be replaced with just single functions that can handle both 32bit and 64bit ELF parsing. Cc: bpf <bpf@vger.kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nicolas Schier <nicolas@fjasle.eu> Cc: Zheng Yejian <zhengyejian1@huawei.com> Cc: Martin Kelly <martin.kelly@crowdstrike.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lore.kernel.org/20250105162345.148224465@goodmis.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Steven Rostedt
|
7ffc0d0819 |
scripts/sorttable: Make compare_extable() into two functions
Instead of having the compare_extable() part of the sorttable.h header
where it get's defined twice, since it is a very simple function, just
define it twice in sorttable.c, and then it can use the proper read
functions for the word size and endianess and the Elf_Addr macro can be
removed from sorttable.h.
Also add a micro optimization. Instead of:
if (a < b)
return -1;
if (a > b)
return 1;
return 0;
That can be shorten to:
if (a < b)
return -1;
return a > b;
Cc: bpf <bpf@vger.kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nicolas Schier <nicolas@fjasle.eu>
Cc: Zheng Yejian <zhengyejian1@huawei.com>
Cc: Martin Kelly <martin.kelly@crowdstrike.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/20250105162344.945299671@goodmis.org
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
|
||
|
Steven Rostedt
|
66990c0033 |
scripts/sorttable: Have the ORC code use the _r() functions to read
The ORC code reads the section information directly from the file. This currently works because the default read function is for 64bit little endian machines. But if for some reason that ever changes, this will break. Instead of having a surprise breakage, use the _r() functions that will read the values from the file properly. Cc: bpf <bpf@vger.kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nicolas Schier <nicolas@fjasle.eu> Cc: Zheng Yejian <zhengyejian1@huawei.com> Cc: Martin Kelly <martin.kelly@crowdstrike.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lore.kernel.org/20250105162344.721480386@goodmis.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Steven Rostedt
|
6f2c2f93a1 |
scripts/sorttable: Remove unneeded Elf_Rel
The code had references to initialize the Elf_Rel relocation tables, but it was never used. Remove it. Cc: bpf <bpf@vger.kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nicolas Schier <nicolas@fjasle.eu> Cc: Zheng Yejian <zhengyejian1@huawei.com> Cc: Martin Kelly <martin.kelly@crowdstrike.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lore.kernel.org/20250105162344.515342233@goodmis.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Steven Rostedt
|
4f48a28b37 |
scripts/sorttable: Remove unused write functions
The code of sorttable.h was copied from the recordmcount.h which defined various write functions for different sizes (2, 4, 8 byte lengths). But sorttable only uses the 4 byte writes. Remove the extra versions as they are not used. Cc: bpf <bpf@vger.kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nicolas Schier <nicolas@fjasle.eu> Cc: Zheng Yejian <zhengyejian1@huawei.com> Cc: Martin Kelly <martin.kelly@crowdstrike.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lore.kernel.org/20250105162344.314385504@goodmis.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Steven Rostedt
|
28b24394c6 |
scripts/sorttable: Remove unused macro defines
The code of sorttable.h was copied from the recordmcount.h which defined a bunch of Elf MACROs so that they could be used between 32bit and 64bit functions. But there's several MACROs that sorttable.h does not use but was copied over. Remove them to clean up the code. Cc: bpf <bpf@vger.kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nicolas Schier <nicolas@fjasle.eu> Cc: Zheng Yejian <zhengyejian1@huawei.com> Cc: Martin Kelly <martin.kelly@crowdstrike.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lore.kernel.org/20250105162344.128870118@goodmis.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Linus Torvalds
|
9244696b34 |
Kbuild fixes for v6.13 (3rd)
- Fix escaping of '$' in scripts/mksysmap - Fix a modpost crash observed with the latest binutils - Fix 'provides' in the linux-api-headers pacman package -----BEGIN PGP SIGNATURE----- iQJJBAABCgAzFiEEbmPs18K1szRHjPqEPYsBB53g2wYFAmd6lzsVHG1hc2FoaXJv eUBrZXJuZWwub3JnAAoJED2LAQed4NsGkXoQAJCH0b0gfzuRMtgKI+HKj/eow4ZI +uArtK/cu2fJ6Vxe71GTBJGEca8DNslOOlyMvWf6jhRcBdd5jOlTciUojk389jRb 6JR9fvEfS3RevkbkzVe0Uq6jSL02eLrF/z/Q3xmVMi68npBlCg40G2EDIIS8iWpu jRxnhSUBKU+ooKahA2KwRVexUdkE8BbdsNLUf5NaTSOACI0A4sn6Om4uYdCQdrRC oNptpzJdVoG40cKlzSyzNoCVxxY77b9PKdkuR28SMpj55ZjcAQRV3ZuHphegH1JQ fpg6JNu0sNHrM4OkKzrpA6f8d3s1yooILgrCMQhFo0gUHLFVLIuos1t8uT4urDr+ RJ7bUWnLCyqu6wEtzGRaiRPXDolKJrXYYTO+XwLkz5iLkNLO1uGXvm7Hbl4GG2iX PKKZ5gT02kQmijvDRc496Q7z4LYJqAqUIUu0NSR1lP+qK0qKCIHJyi3kAAvvLZ/Y Eia8LtUXcjjbbMSSk3vCXC8qvRj4NE1HxqmbBDVTpdnzxNfxeQisHiD0Rz9RzTyo FhvWGrDNx2vTcShrBiZvww5wfUkSSueXqG89d95U3AxlhJ58dk4w08whu03fkhNB P/NM1e6ShOo682LVrBgFHmhgxc+2iYb81ZqzfSJVHLOV8cpShC0KjONFRgdCW4K4 O8iD6fUXYDlLIJjg =v0Mh -----END PGP SIGNATURE----- Merge tag 'kbuild-fixes-v6.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - Fix escaping of '$' in scripts/mksysmap - Fix a modpost crash observed with the latest binutils - Fix 'provides' in the linux-api-headers pacman package * tag 'kbuild-fixes-v6.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: pacman-pkg: provide versioned linux-api-headers package modpost: work around unaligned data access error modpost: refactor do_vmbus_entry() modpost: fix the missed iteration for the max bit in do_input() scripts/mksysmap: Fix escape chars '$' |
||
|
Thomas Weißschuh
|
385443057f |
kbuild: pacman-pkg: provide versioned linux-api-headers package
The Arch Linux glibc package contains a versioned dependency on
"linux-api-headers". If the linux-api-headers package provided by
pacman-pkg does not specify an explicit version this dependency is not
satisfied.
Fix the dependency by providing an explicit version.
Fixes:
|
||
|
Jakub Kicinski
|
385f186aba |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.13-rc6). No conflicts. Adjacent changes: include/linux/if_vlan.h |
||
|
Kuan-Wei Chiu
|
0210d25116 |
scripts/sorttable: fix orc_sort_cmp() to maintain symmetry and transitivity
The orc_sort_cmp() function, used with qsort(), previously violated the symmetry and transitivity rules required by the C standard. Specifically, when both entries are ORC_TYPE_UNDEFINED, it could result in both a < b and b < a, which breaks the required symmetry and transitivity. This can lead to undefined behavior and incorrect sorting results, potentially causing memory corruption in glibc implementations [1]. Symmetry: If x < y, then y > x. Transitivity: If x < y and y < z, then x < z. Fix the comparison logic to return 0 when both entries are ORC_TYPE_UNDEFINED, ensuring compliance with qsort() requirements. Link: https://www.qualys.com/2024/01/30/qsort.txt [1] Link: https://lkml.kernel.org/r/20241226140332.2670689-1-visitorckw@gmail.com Fixes: |
||
|
Geert Uytterhoeven
|
6356f18f09 |
Align git commit ID abbreviation guidelines and checks
The guidelines for git commit ID abbreviation are inconsistent: some
places state to use 12 characters exactly, while other places recommend
12 characters or more. The same issue is present in the checkpatch.pl
script.
E.g. Documentation/dev-tools/checkpatch.rst says:
**GIT_COMMIT_ID**
The proper way to reference a commit id is:
commit <12+ chars of sha1> ("<title line>")
However, scripts/checkpatch.pl has two different checks: one warning
check accepting 12 characters exactly:
# Check Fixes: styles is correct
Please use correct Fixes: style 'Fixes: <12 chars of sha1> (\"<title line>\")'
and a second error check accepting 12-40 characters:
# Check for git id commit length and improperly formed commit descriptions
# A correctly formed commit description is:
# commit <SHA-1 hash length 12+ chars> ("Complete commit subject")
Please use git commit description style 'commit <12+ chars of sha1>
Hence patches containing commit IDs with more than 12 characters are
flagged by checkpatch, and sometimes rejected by maintainers or
reviewers. This is becoming more important with the growth of the
repository, as git may decide to use more characters in case of local
conflicts.
Fix this by settling on at least 12 characters, in both the
documentation and in the checkpatch.pl script.
Fixes:
|
||
|
Vegard Nossum
|
da3ecf00ff |
scripts/kernel-doc: fix identifier parsing regex
John wrote: > kernel-doc gets confused by code like the following: > > /** > * define HOMA_MIN_DEFAULT_PORT - The 16-bit port space is divided into > * two nonoverlapping regions. Ports 1-32767 are reserved exclusively > * for well-defined server ports. The remaining ports are used for client > * ports; these are allocated automatically by Homa. Port 0 is reserved. > */ > #define HOMA_MIN_DEFAULT_PORT 0x8000 > > It seems to use the last "-" on the line (the one in "16-bit") rather > than the first one, so it produces the following false error message: > > homa.h:50: warning: expecting prototype for HOMA_MIN_DEFAULT_PORT - > The 16(). Prototype was for HOMA_MIN_DEFAULT_PORT() instead > > There are similar problems if there is a ":" later on the line. The problem is the regex for the identifier, which is a greedy /.*/ that matches everything up to the last - or : (i.e. $decl_end). Fix it by tightening up this regex and not matching those characters as part of the identifier. Link: https://lore.kernel.org/all/CAGXJAmzfRzE=A94NT5ETtj3bZc-=2oLg-9E5Kjh4o_-iuw1q8g@mail.gmail.com/ Reported-by: John Ousterhout <ouster@cs.stanford.edu> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241221222214.1969823-1-vegard.nossum@oracle.com |
||
|
Masahiro Yamada
|
8fe1a63d3d |
modpost: work around unaligned data access error
With the latest binutils, modpost fails with a bus error on some
architectures such as ARM and sparc64.
Since binutils commit 1f1b5e506bf0 ("bfd/ELF: restrict file alignment
for object files"), the byte offset to each section (sh_offset) in
relocatable ELF is no longer guaranteed to be aligned.
modpost parses MODULE_DEVICE_TABLE() data structures, which are usually
located in the .rodata section. If it is not properly aligned, unaligned
access errors may occur.
To address the issue, this commit imports the get_unaligned() helper
from include/linux/unaligned.h.
The get_unaligned_native() helper caters to the endianness in addition
to handling the unaligned access.
I slightly refactored do_pcmcia_entry() and do_input() to avoid writing
back to an unaligned address. (We would need the put_unaligned() helper
to do that.)
The addend_*_rel() functions need similar adjustments because the .text
sections are not aligned either.
It seems that the .symtab, .rel.* and .rela.* sections are still aligned.
Keep normal pointer access for these sections to avoid unnecessary
performance costs.
Reported-by: Paulo Pisati <paolo.pisati@canonical.com>
Reported-by: Matthias Klose <doko@debian.org>
Closes: https://sourceware.org/bugzilla/show_bug.cgi?id=32435
Reported-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Closes: https://sourceware.org/bugzilla/show_bug.cgi?id=32493
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
|
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|
Masahiro Yamada
|
e1352d7ead |
modpost: refactor do_vmbus_entry()
Optimize the size of guid_name[], as it only requires 1 additional byte for '\0' instead of 2. Simplify the loop by incrementing the iterator by 1 instead of 2. Remove the unnecessary TO_NATIVE() call, as the guid is represented as a byte stream. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> |
||
|
Masahiro Yamada
|
bf36b4bf1b |
modpost: fix the missed iteration for the max bit in do_input()
This loop should iterate over the range from 'min' to 'max' inclusively.
The last interation is missed.
Fixes:
|
||
|
Mostafa Saleh
|
7a6c355b55 |
scripts/mksysmap: Fix escape chars '$'
Commit |
||
|
Linus Torvalds
|
a016546ba6 |
Kbuild fixes for v6.13 (2nd)
- Remove stale code in usr/include/headers_check.pl - Fix issues in the user-mode-linux Debian package - Fix false-positive "export twice" errors in modpost -----BEGIN PGP SIGNATURE----- iQJJBAABCgAzFiEEbmPs18K1szRHjPqEPYsBB53g2wYFAmdmyq4VHG1hc2FoaXJv eUBrZXJuZWwub3JnAAoJED2LAQed4NsGbEcQAJGVUhg9pWwCVmmj69B+Sj1sOM21 CJP+0B3sEQCzMICkG84h2NwOdGCRcF7AkGVPOfiVAzGbC7B1+iuSgyTb7RLOouhr Z69PqwsMluG8pQRkAI76MVrL/N8695x6r50xc1xR9J9MgIEL0+7QBLRHF+IFlpZl 75/EuvzxzMsAa11io7T5krcn7IpuRuLV1LgNicPG5fuEM7DNZqzufZDOzbAQaNO3 wrLvRSfJ6cmKq6I3hNImN39H1ccDvZJcIKu4bSpITG9wmYpYt69lhKG19qpdT0s9 hVIgXnU0hEtdLMCNlH6Tp6R+iytiQ7EQ6B8F3Xr0bpmwBZIvBwresXfCZzbZHoIy ioOG0g8lFgDqNWnAH7+QvGjZ7Cn1lexaQNtt+ullx+g+jCMytyFWN6dw+XPJxorY HK1oE91geFtpc4emQFn/xo47NqX1LshNPiMMWuJdZwXFdIpbkhkECFf/QRfDWkmr jsOqmOJZpxHNwOq4VQuqxhBr5LYy6WVTX43anTL95SRO+ArqDy1nym4LO3Oh0FSp WRnuJ5kcdRrYKdji/xCZ8CafLaDmGbRKg1stXukS7jWAJALBKvndafr7X6BKLmD9 j5UU2tBi24HDTnDjiQTP7/ElUrkecOkis6dHzqvtfJDlcFTPNLnHuBfqdjit2U9j 8keM+ZF0ys0DHIvb =X4LY -----END PGP SIGNATURE----- Merge tag 'kbuild-fixes-v6.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - Remove stale code in usr/include/headers_check.pl - Fix issues in the user-mode-linux Debian package - Fix false-positive "export twice" errors in modpost * tag 'kbuild-fixes-v6.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: modpost: distinguish same module paths from different dump files kbuild: deb-pkg: Do not install maint scripts for arch 'um' kbuild: deb-pkg: add debarch for ARCH=um kbuild: Drop support for include/asm-<arch> in headers_check.pl |
||
|
Masahiro Yamada
|
9435dc77a3 |
modpost: distinguish same module paths from different dump files
Since commit |
||
|
Nicolas Schier
|
54956567a0 |
kbuild: deb-pkg: Do not install maint scripts for arch 'um'
Stop installing Debian maintainer scripts when building a user-mode-linux Debian package. Debian maintainer scripts are used for e.g. requesting rebuilds of initrd, rebuilding DKMS modules and updating of grub configuration. As all of this is not relevant for UML but also may lead to failures while processing the kernel hooks, do no more install maintainer scripts for the UML package. Suggested-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Nicolas Schier <nicolas@fjasle.eu> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> |
||
|
Masahiro Yamada
|
a34e92d2e8 |
kbuild: deb-pkg: add debarch for ARCH=um
'make ARCH=um bindeb-pkg' shows the following warning.
$ make ARCH=um bindeb-pkg
[snip]
GEN debian
** ** ** WARNING ** ** **
Your architecture doesn't have its equivalent
Debian userspace architecture defined!
Falling back to the current host architecture (amd64).
Please add support for um to ./scripts/package/mkdebian ...
This commit hard-codes i386/amd64 because UML is only supported for x86.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
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Jakub Kicinski
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07e5c4eb94 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.13-rc4). No conflicts. Adjacent changes: drivers/net/ethernet/renesas/rswitch.h |
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Przemek Kitszel
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20d00cfae6 |
checkpatch: don't complain on _Generic() use
Improve CamelCase recognition logic to avoid reporting on _Generic() use. Other C keywords, such as _Bool, are intentionally omitted, as those should be rather avoided in new source code. Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: Mateusz Polchlopek <mateusz.polchlopek@intel.com> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> |
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Linus Torvalds
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a3170b7d93 |
A single fix for a docs-build regression caused by the EXPORT_SYMBOL_NS()
mass change. -----BEGIN PGP SIGNATURE----- iQFDBAABCAAtFiEEIw+MvkEiF49krdp9F0NaE2wMflgFAmdcUaMPHGNvcmJldEBs d24ubmV0AAoJEBdDWhNsDH5YHocH+gJMedy9MoAzDORi1D22qRBYdYcjSkE1vFcu lNNoxDckzu1OnycWFfdkKG4dZct8G9JoSec3sxoofqRlHCvayrfeRanLveY7kLMv p5KK1HZSe9G7C8HXnJGoiRzmTiBzYFI8NWtCb/S1XplwzoTUeorbKSiV4EmyGdcS Dm4Hx0PK9HIij8klL9KN1QKWhpWFk5qs8Js8fJIIUZiV0T1B9VDMYAK8LjPdH7lG gKPTHT21OGF7AuIgLQBrqHwutBKSbnrfHqfoRFY/dyZQS8PXtqmMuNepCqsPAQQ0 vNuAbdAihsaFSof69Sdx8s4uw7PoTDZIf/GoWrB+B9Q9MLh75G8= =HZYa -----END PGP SIGNATURE----- Merge tag 'docs-6.13-fix' of git://git.lwn.net/linux Pull documentation fix from Jonathan Corbet: "A single fix for a docs-build regression caused by the EXPORT_SYMBOL_NS() mass change" * tag 'docs-6.13-fix' of git://git.lwn.net/linux: scripts/kernel-doc: Get -export option working again |
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Jakub Kicinski
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5098462fba |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.13-rc3). No conflicts or adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Vladimir Oltean
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41d7ea3049 |
lib: packing: add pack_fields() and unpack_fields()
This is new API which caters to the following requirements: - Pack or unpack a large number of fields to/from a buffer with a small code footprint. The current alternative is to open-code a large number of calls to pack() and unpack(), or to use packing() to reduce that number to half. But packing() is not const-correct. - Use unpacked numbers stored in variables smaller than u64. This reduces the rodata footprint of the stored field arrays. - Perform error checking at compile time, rather than runtime, and return void from the API functions. Because the C preprocessor can't generate variable length code (loops), this is a bit tricky to do with macros. To handle this, implement macros which sanity check the packed field definitions based on their size. Finally, a single macro with a chain of __builtin_choose_expr() is used to select the appropriate macros. We enforce the use of ascending or descending order to avoid O(N^2) scaling when checking for overlap. Note that the macros are written with care to ensure that the compilers can correctly evaluate the resulting code at compile time. In particular, care was taken with avoiding too many nested statement expressions. Nested statement expressions trip up some compilers, especially when passing down variables created in previous statement expressions. There are two key design choices intended to keep the overall macro code size small. First, the definition of each CHECK_PACKED_FIELDS_N macro is implemented recursively, by calling the N-1 macro. This avoids needing the code to repeat multiple times. Second, the CHECK_PACKED_FIELD macro enforces that the fields in the array are sorted in order. This allows checking for overlap only with neighboring fields, rather than the general overlap case where each field would need to be checked against other fields. The overlap checks use the first two fields to determine the order of the remaining fields, thus allowing either ascending or descending order. This enables drivers the flexibility to keep the fields ordered in which ever order most naturally fits their hardware design and its associated documentation. The CHECK_PACKED_FIELDS macro is directly called from within pack_fields and unpack_fields, ensuring that all drivers using the API receive the benefits of the compile-time checks. Users do not need to directly call any of the macros directly. The CHECK_PACKED_FIELDS and its helper macros CHECK_PACKED_FIELDS_(0..50) are generated using a simple C program in scripts/gen_packed_field_checks.c This program can be compiled on demand and executed to generate the macro code in include/linux/packing.h. This will aid in the event that a driver needs more than 50 fields. The generator can be updated with a new size, and used to update the packing.h header file. In practice, the ice driver will need to support 27 fields, and the sja1105 driver will need to support 0 fields. This on-demand generation avoids the need to modify Kbuild. We do not anticipate the maximum number of fields to grow very often. - Reduced rodata footprint for the storage of the packed field arrays. To that end, we have struct packed_field_u8 and packed_field_u16, which define the fields with the associated type. More can be added as needed (unlikely for now). On these types, the same generic pack_fields() and unpack_fields() API can be used, thanks to the new C11 _Generic() selection feature, which can call pack_fields_u8() or pack_fields_16(), depending on the type of the "fields" array - a simplistic form of polymorphism. It is evaluated at compile time which function will actually be called. Over time, packing() is expected to be completely replaced either with pack() or with pack_fields(). Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Co-developed-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://patch.msgid.link/20241210-packing-pack-fields-and-ice-implementation-v10-3-ee56a47479ac@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Akira Yokosawa
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d933949672 |
scripts/kernel-doc: Get -export option working again
Since commit |
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Masahiro Yamada
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a412f04070 |
openrisc: place exception table at the head of vmlinux
Since commit |
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Linus Torvalds
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0b6809a75a |
Kbuild fixes for v6.13
- Fix a section mismatch warning in modpost - Fix Debian package build error with the O= option -----BEGIN PGP SIGNATURE----- iQJJBAABCgAzFiEEbmPs18K1szRHjPqEPYsBB53g2wYFAmdVmkAVHG1hc2FoaXJv eUBrZXJuZWwub3JnAAoJED2LAQed4NsG6DcP/A+YKJW9zDEvNEJPOPrcOvsngB9r u87b8KdIjxdfUPZU4QNS0a/r1xnfiaTKu9cYLAwsMFwh6e5c6yUYT84JqZSdG7oD aQDITaGUAxmW7OPf58Puvo0rCUk1NcLNbI7IPRALoO05pzR3btHuGPslAPTHoDs4 fPX+w9c6ZW3BmXhjuXnzFX0HAhN6MNbCFDht5dk0nxxkhnoogc8RGnfEz+PAKjHu pfbqBvYsdnuGaMadbn2we3FaQYn5WmHOWJphvkuwOC39EX/1O6j/zQyzC3goVWUo puOYQAaPKwefKVaSIDNw0keIUEpligeqjc9kwh6rhwwgWqVAT2P0UPYcyydFasSV Fos4JP1q+iXrIWnNHtRqf9vxKFEz1iBWE6IzlEPmz0WX4r0eo9oIlY+2pAEZVcHO groFzDE5/4ULhpGZZQW2VkYVDCJLPYFWieN7HUGVnfUk5gawo0mmpES9yfzKLLwA 6UeSPwihgw/covIe2QTscPpbRvpTwyysImve2oN66qK4hDUI2R8PACqYAHhZn1tO hsx6i1pFKaz9YCNHDIhBK5ie3YGwIbk2mvbyvRLvQT/k02+IA2yeqT9hC+JGi8HA FeGtOFwd2MUBKyi+AyZSrbAeKrvWkXDOfnitSyR/yRZmMcjNbfQ5odbbRSHoFDzV 6ZMHBQIKaPYeOiWh =cHJ5 -----END PGP SIGNATURE----- Merge tag 'kbuild-fixes-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - Fix a section mismatch warning in modpost - Fix Debian package build error with the O= option * tag 'kbuild-fixes-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: deb-pkg: fix build error with O= modpost: Add .irqentry.text to OTHER_SECTIONS |
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Masahiro Yamada
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d8d326d64f |
kbuild: deb-pkg: fix build error with O=
Since commit |
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Thomas Gleixner
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7912405643 |
modpost: Add .irqentry.text to OTHER_SECTIONS
The compiler can fully inline the actual handler function of an interrupt entry into the .irqentry.text entry point. If such a function contains an access which has an exception table entry, modpost complains about a section mismatch: WARNING: vmlinux.o(__ex_table+0x447c): Section mismatch in reference ... The relocation at __ex_table+0x447c references section ".irqentry.text" which is not in the list of authorized sections. Add .irqentry.text to OTHER_SECTIONS to cure the issue. Reported-by: Sergey Senozhatsky <senozhatsky@chromium.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org # needed for linux-5.4-y Link: https://lore.kernel.org/all/20241128111844.GE10431@google.com/ Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> |