Linux kernel source tree
Go to file
Linus Torvalds 6ab41fca2e Fix a severe slowdown regression in the timer vDSO code related
to the while() loop in __iter_div_u64_rem(), when the AUX-clock
 is enabled.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmi9XZURHG1pbmdvQGtl
 cm5lbC5vcmcACgkQEnMQ0APhK1gVzg/+N3T4qL8Vi3HwOzN862EqmVdaEauAVkQU
 vlIxFbUX26KHmwoSYpsVlaswhONMa6tkNEz3zeOfECrK6SAIg/9SGuk/1bRqERCc
 4KX3g0S0b7qfC7VJmjsmswXmxM9MrXLY5dx/XzhbACpGVoTJAMLlXL0OVwS361fP
 VOH4zSRCPUl+IbTJ6CkVQKZYWZAXxDuxBaSAsMaUz2QMZck6ikGOKP7CT9se0Fk5
 Rve7bC0Wy2vuUfchCIagSE9U28rf7HDawqJVEOygtRQm/Hl7yKSUxaHO5LdSI7c/
 k7mCoZkdyqj3Pdbe26CFSyvGdNJ+gHIhOSzaO43kHTf+bpgW/WBWm6DLjGWl8eKP
 EAW7QMkFoQaNWhSUbPwOR68R7fR3CsvmU1SOXufIRVKjuDy+246gu6y1nvJFr3RS
 BQyBPUh3qAJUoJj00nvjxtLB9p0pI2C+0ml7GTWEX3Ao8Y7rPPKh8yR2CvIhdmI4
 Oo4/vRtcs9NGYKzSu7gknYSkxITsjfEInCkmdsDVQ503QuUAgL653z8rjUIfTIti
 72fJ3pqVUyJuv9xyRkzQcavyZtU/l8uSfMNzgmHen8zmPjKA6rXg+BiuhP4uQ10W
 Wxw2s0cP3RgvuL3+y9oQHq3VHJ4JfdNVOKVssd97zCvmwFKCOXxi+0eKCy9ELQPq
 nNpuOC/9API=
 =5NRx
 -----END PGP SIGNATURE-----

Merge tag 'timers-urgent-2025-09-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer fix from Ingo Molnar:
 "Fix a severe slowdown regression in the timer vDSO code related to the
  while() loop in __iter_div_u64_rem(), when the AUX-clock is enabled"

* tag 'timers-urgent-2025-09-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  vdso/vsyscall: Avoid slow division loop in auxiliary clock update
2025-09-07 08:29:44 -07:00
arch Several RISC-V fixes for v6.17-rc5: 2025-09-07 08:15:56 -07:00
block block: validate QoS before calling __rq_qos_done_bio() 2025-08-26 10:34:08 -06:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto crypto: sha512 - Implement export_core() and import_core() 2025-09-02 19:02:39 -07:00
Documentation spi: Fixes for v6.17 2025-09-05 13:29:31 -07:00
drivers Several RISC-V fixes for v6.17-rc5: 2025-09-07 08:15:56 -07:00
fs five smb3 client fixes 2025-09-05 11:14:23 -07:00
include Fix a severe slowdown regression in the timer vDSO code related 2025-09-07 08:29:44 -07:00
init Rust fixes for v6.17 (2nd) 2025-09-06 12:33:09 -07:00
io_uring io_uring/kbuf: always use READ_ONCE() to read ring provided buffer lengths 2025-08-28 05:48:34 -06:00
ipc vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
kernel Fix a severe slowdown regression in the timer vDSO code related 2025-09-07 08:29:44 -07:00
lib hardening fixes for v6.17-rc4 2025-08-31 08:56:45 -07:00
LICENSES LICENSES: Replace the obsolete address of the FSF in the GFDL-1.2 2025-07-24 11:15:39 +02:00
mm slab fixes for 6.17-rc5 2025-09-04 09:54:20 -07:00
net netfilter pull request nf-25-09-04 2025-09-04 06:59:27 -07:00
rust Rust fixes for v6.17 (2nd) 2025-09-06 12:33:09 -07:00
samples Significant patch series in this pull request: 2025-08-03 16:23:09 -07:00
scripts Rust fixes for v6.17 (2nd) 2025-09-06 12:33:09 -07:00
security + Features 2025-08-04 08:17:28 -07:00
sound ALSA: hda/hdmi: Add pin fix for another HP EliteDesk 800 G4 model 2025-09-01 13:51:57 +02:00
tools perf-tools fixes for v6.17-rc5 2025-09-05 15:01:46 -07:00
usr usr/include: openrisc: don't HDRTEST bpf_perf_event.h 2025-05-12 15:03:17 +09:00
virt Merge tag 'kvm-x86-no_assignment-6.17' of https://github.com/kvm-x86/linux into HEAD 2025-07-29 08:36:42 -04:00
.clang-format Linux 6.15-rc5 2025-05-06 16:39:25 +10:00
.clippy.toml rust: clean Rust 1.88.0's warning about clippy::disallowed_macros configuration 2025-05-07 00:11:47 +02:00
.cocciconfig
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore MAINTAINERS: Retire Ralf Baechle 2024-11-12 15:48:59 +01:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore gitignore: allow .pylintrc to be tracked 2025-07-02 17:10:04 -06:00
.mailmap MAINTAINERS: Update Nobuhiro Iwamatsu's email address 2025-09-01 10:36:10 +02:00
.pylintrc docs: add a .pylintrc file with sys path for docs scripts 2025-04-09 12:10:33 -06:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: retire Boris from TLS maintainers 2025-08-26 17:36:01 -07:00
Kbuild drm: ensure drm headers are self-contained and pass kernel-doc 2025-02-12 10:44:43 +02:00
Kconfig io_uring: Rename KConfig to Kconfig 2025-02-19 14:53:27 -07:00
MAINTAINERS drm fixes for 6.17-rc5 2025-09-05 08:50:25 -07:00
Makefile Linux 6.17-rc4 2025-08-31 15:33:07 -07:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.