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1,461,726 commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Aboorva Devarajan
|
0ecd26e93e |
powerpc/powernv: fix preempt count leak in pnv_kexec_wait_secondaries_down
pnv_kexec_wait_secondaries_down() calls get_cpu() to obtain the current
CPU id but never calls the matching put_cpu(), leaking one
preempt_disable() nesting level on every invocation.
In practice the imbalance does not trigger a visible splat because the
kexec teardown path is a one-way trip: IRQs are already disabled, no
schedule() occurs after the leak, and default_machine_kexec() overwrites
preempt_count with HARDIRQ_OFFSET before jumping into kexec_sequence()
which never returns. However the bookkeeping is still wrong.
The function only needs the current CPU id, and this path runs with
interrupts disabled and the CPU pinned, so the preempt_disable()
side-effect of get_cpu() is unnecessary. Replace it with
raw_smp_processor_id().
Fixes:
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Aboorva Devarajan
|
81e3a86030 |
powerpc/perf: fix preempt count underflow in fsl_emb_pmu_del
fsl_emb_pmu_del() unconditionally calls put_cpu_var(cpu_hw_events) at
the 'out:' label, but only calls the matching get_cpu_var() after the
'i < 0' early-return check. When event->hw.idx is negative the
function jumps to 'out:' without having taken get_cpu_var(), and the
trailing put_cpu_var() then issues an unmatched preempt_enable(),
underflowing preempt_count.
On a CONFIG_PREEMPT=y kernel preempt_count would underflow and
eventually present as a 'scheduling while atomic' BUG.
Move put_cpu_var() to pair with get_cpu_var() so the percpu access is
correctly bracketed and the 'out:' label only handles perf_pmu_enable.
Fixes:
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David Timber
|
20dd3185d1 |
exfat: fix handling of damaged volume in exfat_create_upcase_table()
When the size of the upcase table is set to zero in the dentry for any reason(e.g. corrupted media or misbehaving device), an integer overflow causes the module to loop indefinitely. If the size of the upcase table is read zero, do not attempt to load the table. Instead, fallback to loading the default upcase table. If the size of the upcase table is zero or no upcase table is found, raise exfat_fs_error() to mark the volume read-only. Signed-off-by: David Timber <dxdt@dev.snart.me> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> |
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Amit Machhiwal
|
97f902dd4c |
powerpc/boot: Allow text relocations for pseries wrapper with binutils 2.46+
Binutils 2.46 changed the default linker behavior from '-z notext' to
'-z text', which treats dynamic relocations in read-only segments as
errors rather than warnings. This causes the pseries boot wrapper build
to fail with:
/usr/bin/ld.bfd: arch/powerpc/boot/wrapper.a(crt0.o): warning:
relocation against `_platform_stack_top' in read-only section `.text'
/usr/bin/ld.bfd: error: read-only segment has dynamic relocations
The pseries wrapper uses '-pie' to create position-independent code.
However, crt0.S contains a pointer to '_platform_stack_top' in the .text
section, which requires a dynamic relocation at runtime. This creates
DT_TEXTREL (text relocations), which were allowed by default in binutils
2.45 and earlier (via implicit '-z notext') but are now rejected by
binutils 2.46+.
Add '-z notext' linker flag to explicitly allow text relocations for
the pseries platform, similar to what is already done for the epapr
platform. This restores the previous behavior and allows the boot
wrapper to build successfully with binutils 2.46+.
Signed-off-by: Amit Machhiwal <amachhiw@linux.ibm.com>
Tested-by: Anushree Mathur <anushree.mathur@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260525161601.32097-1-amachhiw@linux.ibm.com
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Catalin Iacob
|
5b2a3b1a98 |
sparc: Remove remaining defconfig references to the pktcdvd driver
Commit
|
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Jani Nikula
|
90c0486a82 |
drm/displayid: fix Tiled Display Topology ID size
The Tiled Display Topology ID of a DisplayID Tiled Display Topology Data Block consists of three fields: - Tiled Display Manufacturer/Vendor ID Field (3 bytes) - Tiled Display Product ID Code Field (2 bytes) - Tiled Display Serial Number Field (4 bytes) i.e. a total of 9 bytes, not 8. The DisplayID Tiled Display Topology ID is used as the tile group identifier. Update both struct displayid_tiled_block topology_id member and struct drm_tile_group group_data member to full 9 bytes. The group data was missing the last byte of the serial number. I don't know whether there are known bug reports that might be linked to this, but it's plausible the last byte could be the differentiating part for the tile groups, and fewer tile groups might have been created than intended. Fixes: |
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Hyunchul Lee
|
3802a666f3 |
docs/fs/ntfs: add mount options to support Windows native symbolic links
Introduce the "symlink=<value>" and the "native_symlink=<value>" mount options to configure the creation behavior of symbolic links and support creating Windows native symbolic links (reparse points with the IO_REPARSE_TAG_SYMLINK tag). Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> |
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Hyunchul Lee
|
d8f1df2e13 |
ntfs: support creating Windows native symlinks
And introduce the symlink=<value> mount option to configure how symbolic links are created. The option accepts "wsl" or "native", with "wsl" being the default. Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> |
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Hyunchul Lee
|
7266767f67 |
ntfs: clean up target name conversion for WSL symlinks
WSL symlink target names are stored as narrow NLS/UTF-8 strings on disk. Converting the target name to Unicode in ntfs_symlink and converting it back to NLS in ntfs_reparse_set_wsl_symlink is redundant. Remove this conversion and pass the symname directly to the reparse data setter. Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> |
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Hyunchul Lee
|
115446b06f |
ntfs: add native_symlink mount option
Because bind-mounted subtrees of the volume may resolve to unexpected locations, change converting junctions and non-relative symbolic links into paths relative to the NTFS volume to be allowed only if the native_symlink=rel mount option is specified. Add the native_symlink=<value> mount option to configure how absolute symbolic links and mount points (junctions) are handled. The option accepts "raw" or "rel", with "raw" being the default. Under "raw", the absolute target path (ni->target) is returned as-is without translation. Under "rel", ntfs_translate_junction() is called to rewrite the absolute path as a relative path anchored at the volume root. Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> |
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Hyunchul Lee
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2b58f93a13 |
ntfs: support following Windows native symlink with absolute paths
Extend reparse-point handling beyond relative symlinks so NTFS can expose the Windows absolute forms used by non-relative symbolic links and junctions. * Store the reparse tag and symlink flags in the inode. * Validate junction payloads, and parse targets from substitute_name. * Add function to rewrite supported Windows absolute path into Linux path relative to the mounted NTFS volume. Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> |
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Hyunchul Lee
|
517cd625ad |
ntfs: support following Windows native symlink with relative paths
Make ntfs_make_symlink() parse native Windows symbolic link reparse payloads when the SYMLINK_FLAG_RELATIVE bit is set. Implement the following changes: * Add a dedicated on-disk layout definition for symbolic link reparse data. * validate the UTF-16 name ranges before decoding them. * convert the substitute name into the mount's NLS and normalize path separators. Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> |
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Hyunchul Lee
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05a5ff86a7 |
ntfs: fix incorrect size of symbolic link
This patch fixes the issue where a symbolic link size is displayed as 0. Cc: stable@vger.kernel.org # v7.1 Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> |
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Arnd Bergmann
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6f25741b75 |
mips: select legacy gpiolib interfaces where used
A few old machines have not been converted away from the old-style gpiolib interfaces. Make these select the new CONFIG_GPIOLIB_LEGACY symbol so the code still works where it is needed but can be left out otherwise. This is the list of all gpio_request() calls in mips: arch/mips/alchemy/devboards/db1000.c: gpio_request(19, "sd0_cd"); arch/mips/alchemy/devboards/db1000.c: gpio_request(20, "sd1_cd"); arch/mips/alchemy/devboards/db1200.c: gpio_request(215, "otg-vbus"); arch/mips/bcm47xx/workarounds.c: err = gpio_request_one(usb_power, GPIOF_OUT_INIT_HIGH, "usb_power"); arch/mips/bcm63xx/boards/board_bcm963xx.c: gpio_request_one(board.ephy_reset_gpio, arch/mips/txx9/rbtx4927/setup.c: gpio_request(15, "sio-dtr"); Most of these should be easy enough to change to modern gpio descriptors or remove if they are no longer in use. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com> Reviewed-by: Linus Walleij <linusw@kernel.org> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> |
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Linus Torvalds
|
0e0611827f |
old udf fix that had fallen through the cracks...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQQqUNBr3gm4hGXdBJlZ7Krx/gZQ6wUCai9kggAKCRBZ7Krx/gZQ 62U4AQC2WwlC/URcNzNcxPHe13a+T1wHb4g8gwW53KH/LvhiXQD/b6vWnUASW1Gs GDK62VVBF5/NEaJhFqBJhFbJmj78wwg= =J6Nu -----END PGP SIGNATURE----- Merge tag 'pull-fixes' of gitolite.kernel.org:pub/scm/linux/kernel/git/viro/vfs Pull udf fix from Al Viro: "I just noticed that a udf fix had been sitting in #fixes since February; still applicable, Jan's Acked-by applied. Very belated pull request" * tag 'pull-fixes' of gitolite.kernel.org:pub/scm/linux/kernel/git/viro/vfs: udf: fix nls leak on udf_fill_super() failure |
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Nathan Chancellor
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5dcd5846f1 |
MIPS: lib: Remove '.hidden' for local symbols
After a recent change in binutils that warns when local symbols have
non-default visibility [1], there are a couple instances when building
arch/mips:
Assembler messages:
{standard input}: Warning: local symbol `__memset' has non-default visibility
Assembler messages:
{standard input}: Warning: local symbol `__memcpy' has non-default visibility
Remove the '.hidden' directives for these symbols to clear up the
warnings, as they are pointless with a local symbol, which is by
definition hidden. This results in no changes to these symbols in nm's
output when assembled with various copies of binutils.
Closes: https://lore.kernel.org/20260509122517.GA1108596@ax162/
Link: https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=c4150acbda1b3ce0602f79cbb7700b39e577be7e [1]
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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Nathan Chancellor
|
315b21cf81 |
MIPS: VDSO: Avoid including .got in dynamic segment
After commit 2db1ec80dfd5 ("MIPS: VDSO: Fold MIPS_DISABLE_VDSO into
MIPS_GENERIC_GETTIMEOFDAY"), building ARCH=mips allnoconfig with LLVM=1
shows some warnings from llvm-readelf while checking the VDSO for
dynamic relocations:
llvm-readelf: warning: 'arch/mips/vdso/vdso.so.dbg.raw': invalid PT_DYNAMIC size (0xa4)
llvm-readelf: warning: 'arch/mips/vdso/vdso.so.dbg.raw': PT_DYNAMIC dynamic table is invalid: SHT_DYNAMIC will be used
The blamed commit alters the link order of objects into vdso.so.raw,
placing vgettimeofday.o after sigreturn.o. This ultimately results in
the .text section shrinking slightly in size, which in turn changes the
offset of the .dynamic section.
- [ 9] .text PROGBITS 000002f0 0002f0 000930 00 AX 0 0 16
- [10] .dynamic DYNAMIC 00000c20 000c20 000090 08 A 5 0 4
+ [ 9] .text PROGBITS 000002f0 0002f0 000924 00 AX 0 0 16
+ [10] .dynamic DYNAMIC 00000c14 000c14 000090 08 A 5 0 4
Changing the offset of the .dynamic section causes the dynamic segment
size to grow by the same amount, which triggers a warning in
llvm-readelf because PT_DYNAMIC's p_filesz (0xa4) is no longer a
multiple of its sh_entsize (8):
- DYNAMIC 0x000c20 0x00000c20 0x00000c20 0x00098 0x00098 R 0x10
+ DYNAMIC 0x000c14 0x00000c14 0x00000c14 0x000a4 0x000a4 R 0x10
The size of the dynamic segment was already incorrect before the blamed
comment, as it should be 0x90 like the .dynamic section above (18
entries at 8 bytes per entry); it just so happens that 0x98 % 8 is 0,
whereas 0xa4 % 8 is 4, so there was no warning.
Looking at the section to segment mapping of the dynamic segment reveals
that it includes the .got section, as it is implicitly placed after
.dynamic by ld.lld's orphan section heuristics and inherits its segments
from the linker script.
[ 9] .text PROGBITS 000002f0 0002f0 000924 00 AX 0 0 16
[10] .dynamic DYNAMIC 00000c14 000c14 000090 08 A 5 0 4
[11] .got PROGBITS 00000cb0 000cb0 000008 00 WAp 0 0 16
Section to Segment mapping:
Segment Sections...
00 .mips_abiflags
01 .reginfo
02 .mips_abiflags .reginfo .hash .dynsym .dynstr .gnu.version .gnu.version_d .note .text .dynamic .got
03 .dynamic .got
04 .note
Explicitly describe the .got section in the MIPS VDSO linker script
after .rodata, which switches back to the default text segment,
resulting in a dynamic segment that is the exact size of the .dynamic
section as expected with no other layout changes.
- DYNAMIC 0x000c14 0x00000c14 0x00000c14 0x000a4 0x000a4 R 0x10
+ DYNAMIC 0x000c14 0x00000c14 0x00000c14 0x00090 0x00090 R 0x4
- 03 .dynamic .got
+ 03 .dynamic
Closes: https://github.com/ClangBuiltLinux/linux/issues/2166
Fixes: 2db1ec80dfd5 ("MIPS: VDSO: Fold MIPS_DISABLE_VDSO into MIPS_GENERIC_GETTIMEOFDAY")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Acked-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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Jonas Jelonek
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9f3f3bdc6d |
MIPS: smp: report dying CPU to RCU in stop_this_cpu()
smp_send_stop() parks all secondary CPUs in stop_this_cpu(). The function marks the CPU offline for the scheduler via set_cpu_online(false) but never informs RCU, so RCU keeps expecting a quiescent state from CPUs that are now spinning forever with interrupts disabled. As long as nothing waits for an RCU grace period after smp_send_stop() this is harmless, which is why it went unnoticed. Since commit |
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Markus Elfring
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e1ac5f3742 |
MIPS: kernel: proc: Delete unnecessary braces in show_cpuinfo()
Do not use curly brackets at one source code place where a single statement should be sufficient. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> |
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Markus Elfring
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8998c0904c |
MIPS: kernel: proc: Use seq_putc() calls in show_cpuinfo()
Single characters should occasionally be put into a sequence. Thus use the corresponding function “seq_putc”. The source code was transformed by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> |
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Aaron Tomlin
|
98e37db4a3 |
mips: sched: Fix CPUMASK_OFFSTACK memory corruption
This patch addresses a critical memory management flaw. When
CONFIG_CPUMASK_OFFSTACK is enabled, cpumask_var_t is a pointer.
Consequently, sizeof(new_mask) evaluates to the pointer size, causing
copy_from_user() to clobber the mask pointer. Furthermore, the old
logic performed copy_from_user() before allocating the mask.
Fix this by allocating new_mask first. To handle variable-sized user
masks correctly, use cpumask_size() to truncate overly large user masks
or pad undersized masks with zeros before copying the data directly into
the allocated buffer.
Fixes:
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Yadan Fan
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1b001b16bc |
MIPS: mm: Fix out-of-bounds write in maar_res_walk()
maar_res_walk() uses wi->num_cfg as the index into the fixed-size
wi->cfg array, but checks whether the array is full only after it has
filled the selected entry. If walk_system_ram_range() reports more than
16 memory ranges, the overflow call writes one struct maar_config past
the end of the array before WARN_ON() prevents num_cfg from advancing.
Move the full-array check before taking the array slot and return non-zero
when the scratch array is full, so walk_system_ram_range() terminates the
walk instead of invoking the callback for further ranges.
Fixes:
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Rosen Penev
|
aeaa898780 |
MIPS: ath79: reduce ARCH_DMA_MINALIGN
Currently, ath79 SoCs use the default ARCH_DMA_MINALIGN value of 128 bytes defined in mach-generic. This is excessive for these platforms and leads to significant memory waste in kmalloc. Override ARCH_DMA_MINALIGN to use L1_CACHE_BYTES, which is 32 bytes for ath79 SoCs. Signed-off-by: Rosen Penev <rosenp@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> |
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Rosen Penev
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5ae158d31d |
mips: dts: ar9132: fix wdt node name
Fixes the following warning: $nodename:0: 'wdt@18060008' does not match '^(timer|watchdog)(@.*|-([0-9]|[1-9][0-9]+))?$' from schema $id: http://devicetree.org/schemas/watchdog/qca,ar7130-wdt.yaml# Signed-off-by: Rosen Penev <rosenp@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> |
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Catalin Iacob
|
10fd82791f |
mips: Remove remaining defconfig references to the pktcdvd driver
Commit
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Ethan Nelson-Moore
|
4ff54ebe49 |
MIPS: mm: remove comment referring to removed CONFIG_MIPS_CMP
CMP support was removed in commit
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Linus Torvalds
|
ff5ccdb8d5 |
x86/cpu updates for v7.2:
- CPUID API updates (Ahmed S. Darwish):
- Introduce a centralized CPUID parser
- Introduce a centralized CPUID data model
- Introduce <asm/cpuid/leaf_types.h>
- Rename cpuid_leaf()/cpuid_subleaf() APIs
- treewide: Explicitly include the x86 CPUID headers
- Update to x86-cpuid-db v3.1 (Maciej Wieczor-Retman)
- Continued removal of pre-i586 support and related
simplifications (Ingo Molnar)
- Add Intel CPU model number for rugged Panther Lake
(Tony Luck)
- Misc fixes, updates and cleanups by Arnd Bergmann, Chao Gao,
Lukas Bulwahn, Sohil Mehta, Maciej Wieczor-Retman.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-cpu-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull x86 cpuid updates from Ingo Molnar:
- CPUID API updates (Ahmed S. Darwish):
- Introduce a centralized CPUID parser
- Introduce a centralized CPUID data model
- Introduce <asm/cpuid/leaf_types.h>
- Rename cpuid_leaf()/cpuid_subleaf() APIs
- treewide: Explicitly include the x86 CPUID headers
- Update to x86-cpuid-db v3.1 (Maciej Wieczor-Retman)
- Continued removal of pre-i586 support and related simplifications
(Ingo Molnar)
- Add Intel CPU model number for rugged Panther Lake (Tony Luck)
- Misc fixes, updates and cleanups by Arnd Bergmann, Chao Gao, Lukas
Bulwahn, Sohil Mehta, Maciej Wieczor-Retman.
* tag 'x86-cpu-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (25 commits)
x86/cpu: Make CONFIG_X86_CX8 unconditional
x86/cpu: Remove unused !CONFIG_X86_TSC code
x86/cpuid: Update bitfields to x86-cpuid-db v3.1
tools/x86/kcpuid: Update bitfields to x86-cpuid-db v3.1
x86/cpu: Make CONFIG_X86_TSC unconditional
MAINTAINERS: Drop obsolete FPU EMULATOR section
x86/cpu: Fix a F00F bug warning and clean up surrounding code
x86/cpu: Add Intel CPU model number for rugged Panther Lake
x86/cpuid: Introduce a centralized CPUID parser
x86/cpu: Introduce a centralized CPUID data model
x86/cpuid: Introduce <asm/cpuid/leaf_types.h>
x86/cpuid: Rename cpuid_leaf()/cpuid_subleaf() APIs
x86/cpu: Do not include the CPUID API header in asm/processor.h
Documentation: core-api/cpu_hotplug: Remove stale cpu0_hotplug docs
x86/cpu, cpufreq: Remove AMD ELAN support
x86/fpu: Remove the math-emu/ FPU emulation library
x86/fpu: Remove the 'no387' boot option
x86/fpu: Remove MATH_EMULATION and related glue code
treewide: Explicitly include the x86 CPUID headers
x86/cpu: Remove the CONFIG_X86_INVD_BUG quirk
...
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Linus Torvalds
|
7561361d76 |
x86/msr updates for v7.2:
- Large series to reorganize the rdmsr/wrmsr APIs to remove
32-bit variants and convert to 64-bit variants (Juergen Gross)
- Fix W=1 warning (HyeongJun An)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-msr-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull x86/msr updates from Ingo Molnar:
- Large series to reorganize the rdmsr/wrmsr APIs to remove
32-bit variants and convert to 64-bit variants (Juergen Gross)
- Fix W=1 warning (HyeongJun An)
* tag 'x86-msr-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip:
x86/msr: Remove wrmsrl()
x86/msr: Switch wrmsrl() users to wrmsrq()
x86/msr: Remove rdmsrl()
x86/msr: Switch rdmsrl() users to rdmsrq()
x86/msr: Remove wrmsr_safe_on_cpu()
x86/msr: Switch wrmsr_safe_on_cpu() users to wrmsrq_safe_on_cpu()
x86/msr: Remove rdmsr_safe_on_cpu()
x86/msr: Switch rdmsr_safe_on_cpu() users to rdmsrq_safe_on_cpu()
x86/msr: Don't use rdmsr_safe_on_cpu() in rdmsrq_safe_on_cpu()
x86/msr: Remove wrmsr_on_cpu()
x86/msr: Switch wrmsr_on_cpu() users to wrmsrq_on_cpu()
x86/msr: Remove rdmsr_on_cpu()
x86/msr: Switch rdmsr_on_cpu() users to rdmsrq_on_cpu()
x86/msr: Remove rdmsrl_on_cpu()
x86/msr: Switch rdmsrl_on_cpu() user to rdmsrq_on_cpu()
x86/process: Convert rdmsr() to rdmsrq() in arch_post_acpi_subsys_init() to address W=1 warning
|
||
|
Linus Torvalds
|
2cbf335f8c |
Scheduler updates for v7.2:
SMP load-balancing updates:
- A large series to introduce infrastructure for cache-aware load
balancing, with the goal of co-locating tasks that share data
within the same Last Level Cache (LLC) domain. By improving cache
locality, the scheduler can reduce cache bouncing and cache misses,
ultimately improving data access efficiency.
Implemented by Chen Yu and Tim Chen, based on early prototype work
by Peter Zijlstra, with fixes by Jianyong Wu, Peter Zijlstra and
Shrikanth Hegde.
- A series to simplify CONFIG_SCHED_SMT ifdef usage (Shrikanth Hegde)
Fair scheduler updates:
- A series to improve SD_ASYM_CPUCAPACITY scheduling by introducing
SMT awareness (Andrea Righi, K Prateek Nayak)
- A series to optimize cfs_rq and sched_entity allocation for
better data locality (Zecheng Li)
- A preparatory series to change fair/cgroup scheduling to a single
runqueue, without the final change (Peter Zijlstra)
- Auto-manage ext/fair dl_server bandwidth (Andrea Righi)
- Fix cpu_util runnable_avg arithmetic (Hongyan Xia)
- Optimize update_tg_load_avg()'s rate-limiting code
(Rik van Riel)
- Allow account_cfs_rq_runtime() to throttle current hierarchy
(K Prateek Nayak)
- Update util_est after updating util_avg during dequeue, to fix
the util signal update logic, which reduces signal noise
(Vincent Guittot)
Scheduler topology updates:
- Allow multiple domains to claim sched_domain_shared (K Prateek Nayak)
- Add parameter to split LLC (Peter Zijlstra)
Core scheduler updates:
- Use trace_call__<tp>() to save a static branch (Gabriele Monaco)
Scheduler statistics updates:
- Drop now-stale mul_u64_u64_div_u64() cputime over-approximation guard
(Nicolas Pitre)
Deadline scheduler updates:
- Reject debugfs dl_server writes for offline CPUs (Andrea Righi)
- Fix replenishment logic for non-deferred servers
(Yuri Andriaccio)
RT scheduling updates:
- Turn RT_PUSH_IPI default off for non PREEMPT_RT (Steven Rostedt)
- Update default bandwidth for real-time tasks to 1.0
(Yuri Andriaccio)
Proxy scheduling updates:
- A series to implement Optimized Donor Migration for Proxy Execution
(John Stultz, Peter Zijlstra)
- Various proxy scheduling cleanups and fixes
(Peter Zijlstra, K Prateek Nayak)
Misc fixes, improvements and cleanups by Aaron Lu, Andrea Righi,
Zenghui Yu, Chen Yu, Guanyou.Chen, John Stultz, Shrikanth Hegde,
Peter Zijlstra, Liang Luo and Yiyang Chen.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"SMP load-balancing updates:
- A large series to introduce infrastructure for cache-aware load
balancing, with the goal of co-locating tasks that share data
within the same Last Level Cache (LLC) domain. By improving cache
locality, the scheduler can reduce cache bouncing and cache misses,
ultimately improving data access efficiency.
Implemented by Chen Yu and Tim Chen, based on early prototype work
by Peter Zijlstra, with fixes by Jianyong Wu, Peter Zijlstra and
Shrikanth Hegde.
- A series to simplify CONFIG_SCHED_SMT ifdef usage (Shrikanth Hegde)
Fair scheduler updates:
- A series to improve SD_ASYM_CPUCAPACITY scheduling by introducing
SMT awareness (Andrea Righi, K Prateek Nayak)
- A series to optimize cfs_rq and sched_entity allocation for better
data locality (Zecheng Li)
- A preparatory series to change fair/cgroup scheduling to a single
runqueue, without the final change (Peter Zijlstra)
- Auto-manage ext/fair dl_server bandwidth (Andrea Righi)
- Fix cpu_util runnable_avg arithmetic (Hongyan Xia)
- Optimize update_tg_load_avg()'s rate-limiting code (Rik van Riel)
- Allow account_cfs_rq_runtime() to throttle current hierarchy
(K Prateek Nayak)
- Update util_est after updating util_avg during dequeue, to fix the
util signal update logic, which reduces signal noise (Vincent
Guittot)
Scheduler topology updates:
- Allow multiple domains to claim sched_domain_shared (K Prateek
Nayak)
- Add parameter to split LLC (Peter Zijlstra)
Core scheduler updates:
- Use trace_call__<tp>() to save a static branch (Gabriele Monaco)
Scheduler statistics updates:
- Drop now-stale mul_u64_u64_div_u64() cputime over-approximation
guard (Nicolas Pitre)
Deadline scheduler updates:
- Reject debugfs dl_server writes for offline CPUs (Andrea Righi)
- Fix replenishment logic for non-deferred servers (Yuri Andriaccio)
RT scheduling updates:
- Turn RT_PUSH_IPI default off for non PREEMPT_RT (Steven Rostedt)
- Update default bandwidth for real-time tasks to 1.0 (Yuri
Andriaccio)
Proxy scheduling updates:
- A series to implement Optimized Donor Migration for Proxy Execution
(John Stultz, Peter Zijlstra)
- Various proxy scheduling cleanups and fixes (Peter Zijlstra,
K Prateek Nayak)
Misc fixes, improvements and cleanups by Aaron Lu, Andrea Righi,
Zenghui Yu, Chen Yu, Guanyou.Chen, John Stultz, Shrikanth Hegde,
Peter Zijlstra, Liang Luo and Yiyang Chen"
* tag 'sched-core-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (91 commits)
sched/fair: Fix newidle vs core-sched
sched/deadline: Use task_on_rq_migrating() helper
sched/core: Combine separate 'else' and 'if' statements
sched/fair: Fix cpu_util runnable_avg arithmetic
sched/fair: Unify cfs_rq throttling via account_cfs_rq_runtime()
sched/fair: Move the throttled tasks to a local list in tg_unthrottle_up()
sched/fair: Call update_curr() before unthrottling the hierarchy
sched/fair: Use throttled_csd_list for local unthrottle
sched/fair: Convert cfs bandwidth throttling to use guards
sched/fair: Allocate cfs_tg_state with percpu allocator
sched/fair: Remove task_group->se pointer array
sched/fair: Co-locate cfs_rq and sched_entity in cfs_tg_state
sched: restore timer_slack_ns when resetting RT policy on fork
MAINTAINERS: Fix spelling mistake in Peter's name
sched: Simplify ttwu_runnable()
sched/proxy: Remove superfluous clear_task_blocked_in()
sched/proxy: Remove PROXY_WAKING
sched/proxy: Switch proxy to use p->is_blocked
sched/proxy: Only return migrate when needed
sched: Be more strict about p->is_blocked
...
|
||
|
Linus Torvalds
|
0bcc2dc22f |
Performance events updates for v7.2:
Core perf code updates:
- Reveal PMU type in fdinfo (Chun-Tse Shao)
Intel CPU PMU driver updates:
- Fix various inaccurate hard-coded event configurations
(Dapeng Mi)
Intel uncore PMU driver updates (Zide Chen):
- Fix discovery unit lookup bug for multi-die systems
- Guard against invalid box control address
- Fix PCI device refcount leak in UPI discovery
- Defer ADL global PMON enable to enable_box() to save power
- Fix uncore_die_to_cpu() for offline dies
- Implement global init callback for GNR uncore
AMD CPU PMU driver updates:
- Always use the NMI latency mitigation (Sandipan Das)
AMD uncore PMU driver updates:
- Use Node ID to identify DF and UMC domains (Sandipan Das)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-core-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull performance events updates from Ingo Molnar:
"Core perf code updates:
- Reveal PMU type in fdinfo (Chun-Tse Shao)
Intel CPU PMU driver updates:
- Fix various inaccurate hard-coded event configurations (Dapeng Mi)
Intel uncore PMU driver updates (Zide Chen):
- Fix discovery unit lookup bug for multi-die systems
- Guard against invalid box control address
- Fix PCI device refcount leak in UPI discovery
- Defer ADL global PMON enable to enable_box() to save power
- Fix uncore_die_to_cpu() for offline dies
- Implement global init callback for GNR uncore
AMD CPU PMU driver updates:
- Always use the NMI latency mitigation (Sandipan Das)
AMD uncore PMU driver updates:
- Use Node ID to identify DF and UMC domains (Sandipan Das)"
* tag 'perf-core-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (22 commits)
perf/x86/amd/uncore: Use Node ID to identify DF and UMC domains
perf: Reveal PMU type in fdinfo
perf/x86/intel/uncore: Implement global init callback for GNR uncore
perf/x86/intel/uncore: Fix uncore_die_to_cpu() for offline dies
perf/x86/intel/uncore: Move die_to_cpu() to uncore.c
perf/x86/intel/uncore: Defer ADL global PMON enable to enable_box()
perf/x86/intel/uncore: Fix PCI device refcount leak in UPI discovery
perf/x86/intel/uncore: Guard against invalid box control address
perf/x86/intel/uncore: Fix discovery unit lookup for multi-die systems
perf/x86/amd/core: Always use the NMI latency mitigation
perf/x86/intel: Update event constraints and cache_extra_regsfor CWF
perf/x86/intel: Update event constraints and cache_extra_regsfor SRF
perf/x86/intel: Update event constraints and cache_extra_regsfor NVL
perf/x86/intel: Update event constraints for PTL
perf/x86/intel: Update event constraints and cache_extra_regsfor ARL
perf/x86/intel: Update event constraints and cache_extra_regsfor LNL
perf/x86/intel: Update event constraints and cache_extra_regsfor MTL
perf/x86/intel: Update event constraints and cache_extra_regsfor ADL
perf/x86/intel: Update event constraints for DMR
perf/x86/intel: Update event constraints and cache_extra_regsfor SPR
...
|
||
|
Linus Torvalds
|
d8d706a274 |
Objtool updates for v7.2:
- A large series of KLP fixes and improvements, in preparation of
the arm64 port (Josh Poimboeuf)
- Fix a number of bugs and issues on specific distro, LTO,
FineIBT and kCFI configs (Josh Poimboeuf)
- Misc other fixes by Josh Poimboeuf and Joe Lawrence.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'objtool-core-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull objtool updates from Ingo Molnar:
- A large series of KLP fixes and improvements, in preparation of the
arm64 port (Josh Poimboeuf)
- Fix a number of bugs and issues on specific distro, LTO, FineIBT and
kCFI configs (Josh Poimboeuf)
- Misc other fixes by Josh Poimboeuf and Joe Lawrence
* tag 'objtool-core-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (53 commits)
objtool/klp: Cache dont_correlate() result
objtool: Improve and simplify prefix symbol detection
objtool/klp: Fix kCFI prefix finding/cloning
objtool: Grow __cfi_* prefix symbols for all CFI+CALL_PADDING
objtool/klp: Fix position-dependent checksums for non-relocated jumps/calls
objtool: Add insn_sym() helper
objtool/klp: Add correlation debugging output
objtool/klp: Rewrite symbol correlation algorithm
objtool/klp: Calculate object checksums
klp-build: Validate short-circuit prerequisites
objtool/klp: Remove "objtool --checksum"
klp-build: Use "objtool klp checksum" subcommand
objtool/klp: Add "objtool klp checksum" subcommand
objtool: Consolidate file decoding into decode_file()
objtool/klp: Extricate checksum calculation from validate_branch()
objtool: Add is_cold_func() helper
objtool: Add is_alias_sym() helper
objtool/klp: Handle Clang .data..Lanon anonymous data sections
objtool/klp: Create empty checksum sections for function-less object files
objtool: Include libsubcmd headers directly from source tree
...
|
||
|
Linus Torvalds
|
764e77d868 |
Locking updates for v7.2:
Futex updates:
- Optimize futex hash bucket access patterns (Peter Zijlstra)
- Large series to address the robust futex unlock race for real,
by Thomas Gleixner:
"The robust futex unlock mechanism is racy in respect
to the clearing of the robust_list_head::list_op_pending
pointer because unlock and clearing the pointer are not
atomic. The race window is between the unlock and clearing the
pending op pointer. If the task is forced to exit in this
window, exit will access a potentially invalid pending op
pointer when cleaning up the robust list. That happens if
another task manages to unmap the object containing the lock
before the cleanup, which results in an UAF. In the worst case
this UAF can lead to memory corruption when unrelated content
has been mapped to the same address by the time the access
happens.
User space can't solve this problem without help from the kernel.
This series provides the kernel side infrastructure to help it
along:
1) Combined unlock, pointer clearing, wake-up for the
contended case
2) VDSO based unlock and pointer clearing helpers with a
fix-up function in the kernel when user space was interrupted
within the critical section.
... with help by André Almeida:
- Add a note about robust list race condition (André Almeida)
- Add self-tests for robust release operations (André Almeida)
Context analysis updates:
- Implement context analysis for 'struct rt_mutex'.
(Bart Van Assche)
- Bump required Clang version to 23 (Marco Elver)
Guard infrastructure updates:
- Series to remove NULL check from unconditional guards
(Dmitry Ilvokhin)
Lockdep updates:
- Restore self-test migrate_disable() and sched_rt_mutex
state on PREEMPT_RT (Karl Mehltretter)
Membarriers updates:
- Use per-CPU mutexes for targeted commands (Aniket Gattani)
- Modernize membarrier_global_expedited with cleanup guards
(Aniket Gattani)
- Add rseq stress test for CFS throttle interactions (Aniket Gattani)
percpu-rwsems updates:
- Extract __percpu_up_read() to optimize inlining overhead
(Dmitry Ilvokhin)
Seqlocks updates:
- Allow UBSAN_ALIGNMENT to fail optimizing (Heiko Carstens)
Lock tracing:
- Add contended_release tracepoint to sleepable locks
such as mutexes, percpu-rwsems, rtmutexes, rwsems
and semaphores. (Dmitry Ilvokhin)
MAINTAINERS updates:
- MAINTAINERS: Add RUST [SYNC] entry (Boqun Feng)
Misc updates and fixes by Randy Dunlap, YE WEI-HONG,
Fabricio Parra, Dmitry Ilvokhin and Peter Zijlstra.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
"Futex updates:
- Optimize futex hash bucket access patterns (Peter Zijlstra)
- Large series to address the robust futex unlock race for real, by
Thomas Gleixner:
"The robust futex unlock mechanism is racy in respect to the
clearing of the robust_list_head::list_op_pending pointer because
unlock and clearing the pointer are not atomic.
The race window is between the unlock and clearing the pending op
pointer. If the task is forced to exit in this window, exit will
access a potentially invalid pending op pointer when cleaning up
the robust list.
That happens if another task manages to unmap the object
containing the lock before the cleanup, which results in an UAF.
In the worst case this UAF can lead to memory corruption when
unrelated content has been mapped to the same address by the time
the access happens.
User space can't solve this problem without help from the kernel.
This series provides the kernel side infrastructure to help it
along:
1) Combined unlock, pointer clearing, wake-up for the
contended case
2) VDSO based unlock and pointer clearing helpers with a
fix-up function in the kernel when user space was interrupted
within the critical section.
... with help by André Almeida:
- Add a note about robust list race condition (André Almeida)
- Add self-tests for robust release operations (André Almeida)
Context analysis updates:
- Implement context analysis for 'struct rt_mutex'. (Bart Van Assche)
- Bump required Clang version to 23 (Marco Elver)
Guard infrastructure updates:
- Series to remove NULL check from unconditional guards (Dmitry
Ilvokhin)
Lockdep updates:
- Restore self-test migrate_disable() and sched_rt_mutex state on
PREEMPT_RT (Karl Mehltretter)
Membarriers updates:
- Use per-CPU mutexes for targeted commands (Aniket Gattani)
- Modernize membarrier_global_expedited with cleanup guards (Aniket
Gattani)
- Add rseq stress test for CFS throttle interactions (Aniket Gattani)
percpu-rwsems updates:
- Extract __percpu_up_read() to optimize inlining overhead (Dmitry
Ilvokhin)
Seqlocks updates:
- Allow UBSAN_ALIGNMENT to fail optimizing (Heiko Carstens)
Lock tracing:
- Add contended_release tracepoint to sleepable locks such as
mutexes, percpu-rwsems, rtmutexes, rwsems and semaphores (Dmitry
Ilvokhin)
MAINTAINERS updates:
- MAINTAINERS: Add RUST [SYNC] entry (Boqun Feng)
Misc updates and fixes by Randy Dunlap, YE WEI-HONG, Fabricio Parra,
Dmitry Ilvokhin and Peter Zijlstra"
* tag 'locking-core-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (36 commits)
locking: Add contended_release tracepoint to sleepable locks
locking/percpu-rwsem: Extract __percpu_up_read()
tracing/lock: Remove unnecessary linux/sched.h include
futex: Optimize futex hash bucket access patterns
rust: sync: completion: Mark inline complete_all and wait_for_completion
MAINTAINERS: Add RUST [SYNC] entry
cleanup: Specify nonnull argument index
selftests: futex: Add tests for robust release operations
Documentation: futex: Add a note about robust list race condition
x86/vdso: Implement __vdso_futex_robust_try_unlock()
x86/vdso: Prepare for robust futex unlock support
futex: Provide infrastructure to plug the non contended robust futex unlock race
futex: Add robust futex unlock IP range
futex: Add support for unlocking robust futexes
futex: Cleanup UAPI defines
x86: Select ARCH_MEMORY_ORDER_TSO
uaccess: Provide unsafe_atomic_store_release_user()
futex: Provide UABI defines for robust list entry modifiers
futex: Move futex related mm_struct data into a struct
futex: Make futex_mm_init() void
...
|
||
Vlastimil Babka (SUSE)
|
5fd1c77e97 |
mm/slab: stop inlining __slab_alloc_node()
With sheaves, this is no longer part of the allocation fastpath. For the same reason, also mark the call to it from slab_alloc_node() as unlikely(). Reviewed-by: Harry Yoo (Oracle) <harry@kernel.org> Reviewed-by: Hao Li <hao.li@linux.dev> Reviewed-by: Suren Baghdasaryan <surenb@google.com> Link: https://patch.msgid.link/20260610-slab_alloc_flags-v2-3-7190909db118@kernel.org Signed-off-by: Vlastimil Babka (SUSE) <vbabka@kernel.org> |
||
|
Vlastimil Babka (SUSE)
|
f09b59ae44 |
mm/slab: do not init any kfence objects on allocation
When init (zeroing) on allocation is requested, for kmalloc() we generally have to zero the full object size even if a smaller size is requested, in order to provide krealloc()'s __GFP_ZERO guarantees. When we end up allocating a kfence object, kfence performs the zeroing on its own because it has its own redzone beyond the requested size. Thus slab_post_alloc_hook() has an 'init' parameter which has to be evaluated in all callers (via slab_want_init_on_alloc()) and should be false for kfence allocations. For kfence allocations in slab_alloc_node() this is achieved by subtly skipping over the slab_want_init_on_alloc() call. Other callers (i.e. kmem_cache_alloc_bulk_noprof()) however evaluate it unconditionally even if they do end up with a kfence allocation. This is only subtly not a problem, as those are not kmalloc allocations and thus the "requested size" equals s->object_size and thus it cannot interfere with kfence's redzone. There's just a unnecessary double zeroing (in both kfence and slab_post_alloc_hook()), but it's all very fragile and contradicts the comment in kfence_guarded_alloc(). Remove this subtlety and simplify the code by eliminating the init parameter from slab_post_alloc_hook() and make it call slab_want_init_on_alloc() itself. Instead add a is_kfence_address() check before performing the memset, which will start doing the right thing for all callers of slab_post_alloc_hook(). This potentially adds overhead of the is_kfence_address() check to allocation hotpath, but that one is designed to be as small as possible, and it's only evaluated if zeroing is about to happen. This means (aside from init_on_alloc hardening) only for __GFP_ZERO allocations, and the zeroing itself comes with an overhead likely larger than the added check. While at it, refactor the handling of evaluating when KASAN does the init instead of SLUB, with no intended functional changes. A non-functional change is that we don't pass kasan_init as true to kasan_slab_alloc() if kasan has no integrated init, but then the value is ignored anyway, so it's theoretically more correct. Thanks to Harry Yoo for the initial refactoring attempt, and for updated comments that are used here. Link: https://patch.msgid.link/20260610-slab_alloc_flags-v2-2-7190909db118@kernel.org Reviewed-by: Harry Yoo (Oracle) <harry@kernel.org> Reviewed-by: Suren Baghdasaryan <surenb@google.com> Reviewed-by: Hao Li <hao.li@linux.dev> Reviewed-by: Marco Elver <elver@google.com> Signed-off-by: Vlastimil Babka (SUSE) <vbabka@kernel.org> |
||
|
Linus Torvalds
|
186d3c4e92 |
A series of updates for the VDSO:
- Remove the redundant CONFIG_GENERIC_TIME_VSYSCALL after converting the
remaining users over.
- Rework and sanitize the MIPS VDSO handling, so it does not handle the
time related VDSO if there is no VDSO capable clocksource available.
Also stop mapping VDSO data pages unconditionally even if there is no
usage possible.
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Merge tag 'timers-vdso-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull vdso updates from Thomas Gleixner:
- Remove the redundant CONFIG_GENERIC_TIME_VSYSCALL after converting
the remaining users over.
- Rework and sanitize the MIPS VDSO handling, so it does not handle the
time related VDSO if there is no VDSO capable clocksource available.
Also stop mapping VDSO data pages unconditionally even if there is no
usage possible.
* tag 'timers-vdso-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip:
MIPS: VDSO: Fold MIPS_CLOCK_VSYSCALL into MIPS_GENERIC_GETTIMEOFDAY
MIPS: VDSO: Gate microMIPS restriction on GCC version
MIPS: VDSO: Fold MIPS_DISABLE_VDSO into MIPS_GENERIC_GETTIMEOFDAY
clocksource/drivers/mips-gic-timer: Only use VDSO_CLOCKMODE_GIC when it is a available
MIPS: csrc-r4k: Only use VDSO_CLOCKMODE_R4K when it is a available
MIPS: VDSO: Only map the data pages when the vDSO is used
MIPS: Introduce Kconfig MIPS_GENERIC_GETTIMEOFDAY
vdso/datastore: Always provide symbol declarations
MAINTAINERS: Add include/linux/vdso_datastore.h to vDSO block
vdso/gettimeofday: Rename __arch_get_vdso_u_timens_data()
vdso/treewide: Drop GENERIC_TIME_VSYSCALL
vdso/vsyscall: Gate update_vsyscall() behind CONFIG_GENERIC_GETTIMEOFDAY
riscv: vdso: Drop CONFIG_GENERIC_TIME_VSYSCALL guard around syscall fallbacks
|
||
|
Linus Torvalds
|
2d6d57f889 |
Updates for NTP/timekeeping and PTP:
- Expand timekeeping snapshot mechanisms
The various snapshot functions are mostly used for PTP to collect
"atomic" snapshots of various involved clocks.
They lack support for the recently introduced AUX clocks and do not
provide the underlying counter value (e.g. TSC) to user space. Exposing
the counter value snapshot allows for better control and steering.
Convert the hard wired ktime_get_snapshot() to take a clock ID, which
allows the caller to select the clock ID to be captured along with
CLOCK_MONONOTONIC_RAW. Additionally capture the underlying hardware
counter value and the clock source ID of the counter.
Expand the hardware based snapshot capture where devices provide a
mechanism to snapshot the hardware PTP clock and the system counter
(usually via PCI/PTM) to support AUX clocks and also provide the
captured counter value back to the caller and not only the clock
timestamps derived from it.
- Add a new optional read_snapshot() callback to clocksources
That is required to capture atomic snapshots from clocksources which
are derived from TSC with a scaling mechanism (e.g. Hyper-V, KVMclock).
The value pair is handed back in the snapshot structure to the callers,
so they can do the necessary correlations in a more precise way.
This touches usage sites of the affected functions and data structure all
over the tree, but stays fully backwards compatible for the existing user
space exposed interfaces. New PTP IOCTLs will provide access to the
extended functionality in later kernel versions.
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Merge tag 'timers-ptp-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull timekeeping updates from Thomas Gleixner:
"Updates for NTP/timekeeping and PTP:
- Expand timekeeping snapshot mechanisms
The various snapshot functions are mostly used for PTP to collect
"atomic" snapshots of various involved clocks.
They lack support for the recently introduced AUX clocks and do not
provide the underlying counter value (e.g. TSC) to user space.
Exposing the counter value snapshot allows for better control and
steering.
Convert the hard wired ktime_get_snapshot() to take a clock ID,
which allows the caller to select the clock ID to be captured along
with CLOCK_MONONOTONIC_RAW. Additionally capture the underlying
hardware counter value and the clock source ID of the counter.
Expand the hardware based snapshot capture where devices provide a
mechanism to snapshot the hardware PTP clock and the system counter
(usually via PCI/PTM) to support AUX clocks and also provide the
captured counter value back to the caller and not only the clock
timestamps derived from it.
- Add a new optional read_snapshot() callback to clocksources
That is required to capture atomic snapshots from clocksources
which are derived from TSC with a scaling mechanism (e.g. Hyper-V,
KVMclock).
The value pair is handed back in the snapshot structure to the
callers, so they can do the necessary correlations in a more
precise way.
This touches usage sites of the affected functions and data structure
all over the tree, but stays fully backwards compatible for the
existing user space exposed interfaces. New PTP IOCTLs will provide
access to the extended functionality in later kernel versions"
* tag 'timers-ptp-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (28 commits)
ptp: vmclock: Use hw_cycles from snapshot for precise TSC pairing
x86/kvmclock: Implement read_snapshot() for kvmclock clocksource
clocksource/hyperv: Implement read_snapshot() for TSC page clocksource
timekeeping: Add clocksource read_snapshot() method and hw_cycles to snapshot
ptp: Switch to ktime_get_snapshot_id() for pre/post timestamps
timekeeping: Add support for AUX clock cross timestamping
timekeeping: Remove system_device_crosststamp::sys_realtime
ALSA: hda/common: Use system_device_crosststamp::sys_systime
wifi: iwlwifi: Use system_device_crosststamp::sys_systime
ptp: Use system_device_crosststamp::sys_systime
timekeeping: Prepare for cross timestamps on arbitrary clock IDs
timekeeping: Remove ktime_get_snapshot()
virtio_rtc: Use provided clock ID for history snapshot
net/mlx5: Use provided clock ID for history snapshot
igc: Use provided clock ID for history snapshot
ice/ptp: Use provided clock ID for history snapshot
wifi: iwlwifi: Adopt PTP cross timestamps to core changes
timekeeping: Add CLOCK ID to system_device_crosststamp
timekeeping: Add system_counterval_t to struct system_device_crosststamp
timekeeping: Add CLOCK_AUX support for ktime_get_snapshot_id()
...
|
||
|
Linus Torvalds
|
a53fcff8fc |
Updates for the NOHZ subsystem:
- Fix a long standing TOCTOU in get_cpu_sleep_time_us()
- Make the CPU offline NOHZ handling more robust by disabling NOHZ on the
outgoing CPU early instead of creating unneeded state which needs to be
undone.
- Unify idle CPU time accounting instead of having two different
accounting mechanisms. These two different mechanisms are not really
independent, but the different properties can in the worst case cause
that gloabl idle time can be observed going backwards.
- Consolidate the idle/iowait time retrieval interfaces instead of
converting back and forth between them.
- Make idle interrupt time accounting more robust. The original code
assumes that interrupt time accouting is enabled and therefore stops
elapsing idle time while an interrupt is handled in NOHZ dyntick
state. That assumption is not correct as interrupt time accounting can
be disabled at compile and runtime.
- Fix an accounting error between dyntick idle time and dyntick idle
steal time. The stolen time is not accounted and therefore idle time
becomes inaccurate. The stolen time is now accounted after the fact as
there is no way to predict the steal time upfront.
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Merge tag 'timers-nohz-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull NOHZ updates from Thomas Gleixner:
- Fix a long standing TOCTOU in get_cpu_sleep_time_us()
- Make the CPU offline NOHZ handling more robust by disabling NOHZ on
the outgoing CPU early instead of creating unneeded state which needs
to be undone.
- Unify idle CPU time accounting instead of having two different
accounting mechanisms. These two different mechanisms are not really
independent, but the different properties can in the worst case cause
that gloabl idle time can be observed going backwards.
- Consolidate the idle/iowait time retrieval interfaces instead of
converting back and forth between them.
- Make idle interrupt time accounting more robust. The original code
assumes that interrupt time accouting is enabled and therefore stops
elapsing idle time while an interrupt is handled in NOHZ dyntick
state. That assumption is not correct as interrupt time accounting
can be disabled at compile and runtime.
- Fix an accounting error between dyntick idle time and dyntick idle
steal time. The stolen time is not accounted and therefore idle time
becomes inaccurate. The stolen time is now accounted after the fact
as there is no way to predict the steal time upfront.
* tag 'timers-nohz-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip:
sched/cputime: Handle dyntick-idle steal time correctly
sched/cputime: Handle idle irqtime gracefully
sched/cputime: Provide get_cpu_[idle|iowait]_time_us() off-case
tick/sched: Consolidate idle time fetching APIs
tick/sched: Account tickless idle cputime only when tick is stopped
tick/sched: Remove unused fields
tick/sched: Move dyntick-idle cputime accounting to cputime code
tick/sched: Remove nohz disabled special case in cputime fetch
tick/sched: Unify idle cputime accounting
s390/time: Prepare to stop elapsing in dynticks-idle
powerpc/time: Prepare to stop elapsing in dynticks-idle
sched/cputime: Correctly support generic vtime idle time
sched/cputime: Remove superfluous and error prone kcpustat_field() parameter
sched/idle: Handle offlining first in idle loop
tick/sched: Fix TOCTOU in nohz idle time fetch
|
||
|
Linus Torvalds
|
a60ce761d9 |
Updates for the time/timer core subsystem:
- Harden the user space controllable hrtimer interfaces further to
protect against unpriviledged DoS attempts by arming timers in the past.
- Add per-capacity hierarchies to the timer migration code to prevent
timer migration accross different capacity domains. This code has been
disabled last minute as there is a pathological problem with SoCs which
advertise a larger number of capacity domains. The problem is under
investigation and the code won't be active before v7.3, but that turned
out to be less intrusive than a full revert as it preserves the
preparatory steps and allows people to work on the final resolution
- Export time namespace functionality as a recent user can be built as a
module.
- Initialize the jiffies clocksource before using it. The recent
hardening against time moving backward requires that the related
members of struct clocksource have been initialized, otherwise it
clamps the readout to 0, which makes time stand sill and causes boot
delays.
- Fix a more than twenty year old PID reference count leak in an error
path of the POSIX CPU timer code.
- The usual small fixes, improvements and cleanups all over the place.
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Merge tag 'timers-core-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull timer core updates from Thomas Gleixner:
"Updates for the time/timer core subsystem:
- Harden the user space controllable hrtimer interfaces further to
protect against unpriviledged DoS attempts by arming timers in the
past.
- Add per-capacity hierarchies to the timer migration code to prevent
timer migration accross different capacity domains. This code has
been disabled last minute as there is a pathological problem with
SoCs which advertise a larger number of capacity domains. The
problem is under investigation and the code won't be active before
v7.3, but that turned out to be less intrusive than a full revert
as it preserves the preparatory steps and allows people to work on
the final resolution
- Export time namespace functionality as a recent user can be built
as a module.
- Initialize the jiffies clocksource before using it. The recent
hardening against time moving backward requires that the related
members of struct clocksource have been initialized, otherwise it
clamps the readout to 0, which makes time stand sill and causes
boot delays.
- Fix a more than twenty year old PID reference count leak in an
error path of the POSIX CPU timer code.
- The usual small fixes, improvements and cleanups all over the
place"
* tag 'timers-core-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (31 commits)
posix-cpu-timers: Fix pid refcount leak in do_cpu_nanosleep() error path
time/jiffies: Register jiffies clocksource before usage
timers/migration: Temporarily disable per capacity hierarchies
timers/migration: Turn tmigr_hierarchy level_list into a flexible array
timers/migration: Deactivate per-capacity hierarchies under nohz_full
timers/migration: Fix hotplug migrator selection target on asymetric capacity machines
ntsync: Honour caller's time namespace for absolute MONOTONIC timeouts
time/namespace: Export init_time_ns and do_timens_ktime_to_host()
timers/migration: Update stale @online doc to @available
timers: Fix flseep() typo in kernel-doc comment
hrtimer: Fix the bogus return type of __hrtimer_start_range_ns()
hrtimer: Return ktime_t from hrtimer_get_next_event()/hrtimer_next_event_without()
clocksource: Clean up clocksource_update_freq() functions
alarmtimer: Remove stale return description from alarm_handle_timer()
selftests/posix_timers: Use CLOCK_THREAD_CPUTIME_ID for ITIMER_PROF measurements
scripts/timers: Add timer_migration_tree.py
timers/migration: Handle capacity in connect tracepoints
timers/migration: Split per-capacity hierarchies
timers/migration: Track CPUs in a hierarchy
timers/migration: Abstract out hierarchy to prepare for CPU capacity awareness
...
|
||
Pengpeng Hou
|
7eb475e8a7 |
sparc: led: avoid trimming a newline from empty writes
led_proc_write() duplicates up to LED_MAX_LENGTH bytes with
memdup_user_nul() and then unconditionally inspects buf[count - 1] to
strip a trailing newline. A zero-length write therefore reads one byte
before the duplicated buffer.
The previous version rejected empty writes, but empty input already falls
through to the existing default case and turns the LED off like any other
unrecognized string. Preserve that behavior and only skip the newline
trim when there is no input byte to inspect.
Fixes:
|
||
|
Rosen Penev
|
2416b30ec2 |
sparc: Export mcount for Clang-built modules
Clang emits calls to mcount for -pg on sparc64, while the existing ftrace support only exports the _mcount name. With FUNCTION_TRACER enabled, modules can therefore keep relocations against mcount and fail during modpost: ERROR: modpost: "mcount" [arch/sparc/kernel/chmc.ko] undefined! _mcount and mcount are aliases in arch/sparc/lib/mcount.S. Export the plain mcount alias as well so Clang-built modules can resolve their profiling call target. Assisted-by: Codex:GPT-5 Signed-off-by: Rosen Penev <rosenp@gmail.com> Reviewed-by: Andreas Larsson <andreas@gaisler.com> Signed-off-by: Andreas Larsson <andreas@gaisler.com> |
||
|
Rosen Penev
|
852fed2e8b |
sparc: Disable compat support with LLD
An LLVM=1 sparc64 allmodconfig enables COMPAT and then tries to build the 32-bit vDSO. That path cannot be linked with ld.lld: ld.lld: error: unknown emulation: elf32_sparc ld.lld does not support the 32-bit SPARC ELF emulation used for the compat vDSO, so keep COMPAT disabled when LLD is the linker. This avoids selecting an unsupported build path while leaving the existing GNU ld configuration unchanged. Assisted-by: Codex:GPT-5.5 Signed-off-by: Rosen Penev <rosenp@gmail.com> Acked-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Andreas Larsson <andreas@gaisler.com> Link: https://lore.kernel.org/r/20260508000834.834824-1-rosenp@gmail.com Signed-off-by: Andreas Larsson <andreas@gaisler.com> |
||
|
Linus Torvalds
|
f20e2fdaae |
Updates for clocksource/clockevent drivers:
- Add devm helpers for clocksources, which allows to simplify driver
teardown and probe failure handling.
- More module conversion work
- Update the support for the ARM EL2 virtual timer including the required
ACPI changes.
- Add clockevent and clocksource support for the TI Dual Mode Timer
- Fix the support for multiple watchdog instances in the TEGRA186 driver
- Add D1 timer support to the SUN5I driver
- The usual devicetree updates, cleanups and small fixes all over the place
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Merge tag 'timers-clocksource-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull clocksource updates from Thomas Gleixner:
"Updates for clocksource/clockevent drivers:
- Add devm helpers for clocksources, which allows to simplify driver
teardown and probe failure handling.
- More module conversion work
- Update the support for the ARM EL2 virtual timer including the
required ACPI changes.
- Add clockevent and clocksource support for the TI Dual Mode Timer
- Fix the support for multiple watchdog instances in the TEGRA186
driver
- Add D1 timer support to the SUN5I driver
- The usual devicetree updates, cleanups and small fixes all over the
place"
* tag 'timers-clocksource-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (24 commits)
clocksource: move NXP timer selection to drivers/clocksource
clocksource/drivers/timer-tegra186: Reserve and service a kernel watchdog
clocksource/drivers/timer-tegra186: Register all accessible watchdog timers
clocksource/drivers/timer-tegra186: Correct num_wdts for Tegra186 and Tegra234
clocksource/drivers/timer-tegra186: Fix support for multiple watchdog instances
clocksource/drivers/timer-ti-dm: Add clockevent support
clocksource/drivers/timer-ti-dm: Add clocksource support
clocksource/drivers/timer-ti-dm: Fix property name in comment
dt-bindings: timer: arm,arch_timer: Fix requirements for interrupt description
clocksource/drivers/arm_arch_timer: Default to EL2 virtual timer when running VHE
ACPI: GTDT: Parse information related to the EL2 virtual timer
ACPI: GTDT: Account for GTDTv3 size when walking the platform timer descriptors
clocksource: Add devm_clocksource_register_*() helpers
clocksource/drivers/sun5i: Add D1 hstimer support
dt-bindings: timer: allwinner,sun5i-a13-hstimer: add H616 and D1
dt-bindings: timer: Add StarFive JHB100 clint
dt-bindings: timer: renesas,rz-mtu3: document RZ/{T2H,N2H}
dt-bindings: timer: renesas,rz-mtu3: Remove TCIU8 interrupt
dt-bindings: timer: Remove sifive,fine-ctr-bits property
clocksource/drivers/timer-of: Make the code compatible with modules
...
|
||
|
Linus Torvalds
|
9e94480d81 |
Two small updates to the SMP/hotplug subsystem:
- Add cpuhplock.h to the maintained files
- Provide the missing stubs for lockdep_is_cpus_held() and
lockdep_is_cpus_write_held() so the usage sites can be simplified.
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Merge tag 'smp-core-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull smp core updates from Thomas Gleixner:
"Two small updates to the SMP/hotplug subsystem:
- Add cpuhplock.h to the maintained files
- Provide the missing stubs for lockdep_is_cpus_held() and
lockdep_is_cpus_write_held() so the usage sites can be simplified"
* tag 'smp-core-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip:
cpu: Add lockdep_is_cpus_held()/lockdep_is_cpus_write_held() stubs for !CONFIG_HOTPLUG_CPU
MAINTAINERS: Add include/linux/cpuhplock.h to CPU HOTPLUG area
|
||
|
Linus Torvalds
|
8f45c6ce49 |
A trivial update to the MSI interrupt subsystem, which fixes a couple of
typos. -----BEGIN PGP SIGNATURE----- iQJEBAABCgAuFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmotia4QHHRnbHhAa2Vy bmVsLm9yZwAKCRCmGPVMDXSYobqBD/9Is9EpnjZg2C3Q3nrPcaAvkXsxvbXLRFPm en/sA4f7pwG6hBmamuxTCc8I9FGID7U+XALwvb7oDWAldXc9RYMf40iXMhhEWr79 BYFfh50Crxm1FQk9NfY/asNCyGZAfVnIZ75LBk5GHpThjDMguW7n4p4CTIGxQgYm YfL5cqEJZbNQAlSU3e9m3t6nS/Re6eHrycYYrCXbkfBEK06GKj8ooD7Lj2Y/10dz PV/s4Rf8+0gjKqBkba5hFru/7pdGgQYsc/wrNK5c61ENUU+Kpszd3jed/yNU1AEp 9XsQLTmMKvUf+3ZkxIRbCsYcEXN1WNskBlCUagMQHnRkiUq6dT8HnpL4tz4LBO2A WqCVzJimW2R5BLzor0MyduIrcfly4GNrn1+ceWjTTVRp4I/CZ95iPtKthsfl6zC8 NyhMEVFjd5zUwhySuGwkZs3chiQKy9lf7Mw6R+6fVivzIin8vdXu9ULz9/sb0J3K x0CO+WOknkpVp6/UfgiWgxshx+lpzDIdF5PPuof6dw4wHE3JXy0rS642AbLte+D3 RQ6RhAMSVpQ6tHxtxMeJuxI54kxtA5PQ22UPPz8PHt8YATUmTIABmC+E4FuN8ax/ NqSWmKLosw1CaE9q4LO1wHcG26f4VnxasB2eHVjwV0W9JBoIQHLZFJ9h3Xo7nkY+ P45uZ+PJlg== =ELZn -----END PGP SIGNATURE----- Merge tag 'irq-msi-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip Pull MSI irq update from Thomas Gleixner: "A trivial update to the MSI interrupt subsystem, which fixes a couple of typos" * tag 'irq-msi-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: genirq/msi: Fix typos in msi_domain_ops comment |
||
|
Linus Torvalds
|
857ae5a445 |
Interrupt chip driver changes:
- Replace the support for the AST2700-A0 early silicon with a proper
driver for the final A2 production silicon
- Rename and rework the StarFive JH8100 interrupt controller for the new
JHB100 SoC as JH8100 was discontinued before production.
- Add support for Amlogic A9 SoCs to the meson-gpio interrupt controller
- Expand the Econet interrupt controller driver to support MIPS 34Kc
Vectored External Interrupt Controller mode.
- Prevent a NULL pointer dereference in the GICv4 code as the vLPI code
blindly assumes that the ITS was populated. Add the missing sanity check.
- Add support for software triggered and for error interrupts to the
Renesas RZ/T2H driver.
- Add interrupt redirection support for the loongarch architecture.
- Add multicore support to the Realtek RTL interrupt driver
- The usual updates, enhancements and fixes all over the place
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Merge tag 'irq-drivers-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull interrupt chip driver updates from Thomas Gleixner:
- Replace the support for the AST2700-A0 early silicon with a proper
driver for the final A2 production silicon
- Rename and rework the StarFive JH8100 interrupt controller for the
new JHB100 SoC as JH8100 was discontinued before production.
- Add support for Amlogic A9 SoCs to the meson-gpio interrupt
controller
- Expand the Econet interrupt controller driver to support MIPS 34Kc
Vectored External Interrupt Controller mode.
- Prevent a NULL pointer dereference in the GICv4 code as the vLPI code
blindly assumes that the ITS was populated. Add the missing sanity
check.
- Add support for software triggered and for error interrupts to the
Renesas RZ/T2H driver.
- Add interrupt redirection support for the loongarch architecture.
- Add multicore support to the Realtek RTL interrupt driver
- The usual updates, enhancements and fixes all over the place
* tag 'irq-drivers-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (32 commits)
irqchip/irq-realtek-rtl: Add multicore support
irqchip/irq-realtek-rtl: Add/simplify register helpers
irqchip/loongarch-ir: Add IR (interrupt redirection) irqchip support
irqchip/loongarch-avec: Return IRQ_SET_MASK_OK_DONE when keep affinity
irqchip/loongarch-avec: Prepare for interrupt redirection support
Docs/LoongArch: Add advanced extended IRQ model
irqchip/qcom-pdc: Use FIELD_GET() to extract bank index and bit position
irqchip/qcom-pdc: Add PDC_VERSION() macro to describe version register fields
irqchip/qcom-pdc: Tighten ioremap clamp to single DRV region size
irqchip/qcom-pdc: Split __pdc_enable_intr() into per-version helpers
irqchip/exynos-combiner: Remove useless spinlock
irqchip/renesas-rzt2h: Add error interrupts support
irqchip/renesas-rzt2h: Add software-triggered interrupts support
irqchip/gic-v4: Don't advertise VLPIs if no ITS is probed
irqchip/gic-v3-its: Use FIELD_MODIFY()
irqchip/econet-en751221: Support MIPS 34Kc VEIC mode
dt-bindings: interrupt-controller: econet: Add CPU interrupt mapping
irqchip/meson-gpio: Add support for Amlogic A9 SoCs
dt-bindings: interrupt-controller: Add support for Amlogic A9 SoCs
irqchip/meson-gpio: Use the correct register in meson_s4_gpio_irq_set_type()
...
|
||
|
Linus Torvalds
|
13e1a6d6a1 |
Interrupt core code changes:
- Rework of /proc/interrupt handling:
/proc/interrupts was subject to micro optimizations for a long time,
but most of the low hanging fruit was left on the table. This rework
addresses the major time consuming issues:
- Printing a long series of zeros one by one via a format string
instead of counting subsequent zeros and emitting a string
constant.
- Simplify and cache the conditions whether interrupts should be printed
- Use a proper iteration over the interrupt descriptor xarray
instead of walking and testing one by one.
- Provide helper functions for the architecture code to emit the
architecture specific counters
- Convert the counter structure in x86 to an array, which
simplifies the output and add mechanisms to suppress unused
architecture interrupts, which just occupy space for
nothing. Adopt the new core mechanisms.
This adjusts the gdb scripts related to interrupt counter statitics
to work with the new mechanisms.
- Prevent a string overflow in the /proc/irq/$N/ directory name
creation code.
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Merge tag 'irq-core-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull interrupt core updates from Thomas Gleixner:
- Rework of /proc/interrupt handling:
/proc/interrupts was subject to micro optimizations for a long time,
but most of the low hanging fruit was left on the table. This rework
addresses the major time consuming issues:
- Printing a long series of zeros one by one via a format string
instead of counting subsequent zeros and emitting a string
constant.
- Simplify and cache the conditions whether interrupts should be
printed
- Use a proper iteration over the interrupt descriptor xarray
instead of walking and testing one by one.
- Provide helper functions for the architecture code to emit the
architecture specific counters
- Convert the counter structure in x86 to an array, which
simplifies the output and add mechanisms to suppress unused
architecture interrupts, which just occupy space for nothing.
Adopt the new core mechanisms.
This adjusts the gdb scripts related to interrupt counter statistics
to work with the new mechanisms.
- Prevent a string overflow in the /proc/irq/$N/ directory name
creation code.
* tag 'irq-core-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip:
x86/irq: Add missing 's' back to thermal event printout
genirq/proc: Speed up /proc/interrupts iteration
genirq/proc: Runtime size the chip name
genirq: Expose irq_find_desc_at_or_after() in core code
genirq: Add rcuref count to struct irq_desc
genirq/proc: Increase default interrupt number precision to four
genirq: Calculate precision only when required
genirq: Cache the condition for /proc/interrupts exposure
genirq/manage: Make NMI cleanup RT safe
genirq: Expose nr_irqs in core code
scripts/gdb: Update x86 interrupts to the array based storage
x86/irq: Move IOAPIC misrouted and PIC/APIC error counts into irq_stats
x86/irq: Suppress unlikely interrupt stats by default
x86/irq: Make irqstats array based
genirq/proc: Utilize irq_desc::tot_count to avoid evaluation
genirq/proc: Avoid formatting zero counts in /proc/interrupts
x86/irq: Optimize interrupts decimals printing
genirq/proc: Size interrupt directory names for 10-digit interrupt numbers
|
||
|
Linus Torvalds
|
a04c8472b0 |
A trivial update for RSEQ selftests to provide the config fragments which
contain the config options required to actually run the tests. -----BEGIN PGP SIGNATURE----- iQJEBAABCgAuFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmotg88QHHRnbHhAa2Vy bmVsLm9yZwAKCRCmGPVMDXSYodtaD/42rFTpCyz77IFYikQm60ppxIFCbxYB/1D4 RdoBeWVNVeKX91+X2qe54XrK1E50tGzc5+2Bu/QNf/jEUCC+dGibCffshoIY1KPj +NLSrVIctta/AfLl046RoByqhpWUnyLPmA+st5UraUtXR3S38bqPQ0XLhJXMCzOu 4fwu6xl9oZ1hoX4nyCd6R7irBg71qS1rpXgAzDa1wSpaJmyLUlKYfLaOg+6/fTo6 3q9o7iWt5rJODVMDkCCr7canMUBzulksICrJ2V//keeeCa+88yV2oKQ8AQvZzv00 yQsksAjOnVISAAfBP6RA4CCxgSogKmDeTr4YWPDtOLP2bPelBEDxKh4nM1v1tTqS dlBqh4WOI1vGpDglOKgClgybzoQogC9MKRlr+jq/VcE8VJGjZiQBmm+LLi3uhRrw BDGhrXbRVyQo9JVXVHIbgBxYDtGe/o+Zwrr70LVyiUMWaNPcbEMmOnm2CpsxriV4 zEkDKKmlHmX9LRn6CF9HbW9X3aCJiN6RPh28grjSxZb6UFB8htMuPDHN5XKBmvo4 NWFfgTkShh4HiX/Vl/WtV7QQ/NgQh5KESPBZtZA4kmAFgu2Pbh6ESk+UNsagx/97 cBipodzv7H71yY9hsZyBMDBFSj1T/1rzZNKl19I0dCXGPSoUGxJK0JYWkgvgucvy KRCpyQ75ZA== =l514 -----END PGP SIGNATURE----- Merge tag 'core-rseq-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip Pull rseq update from Thomas Gleixner: "A trivial update for RSEQ selftests to provide the config fragments which contain the config options required to actually run the tests" * tag 'core-rseq-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: selftests/rseq: Add config fragment |
||
Li RongQing
|
2d36d3b451 |
x86/ioperm: Prevent NULL dereference on theoretical missing IO bitmap
Outside the IOPL emulation path, the IO bitmap is always expected to be allocated when TIF_IO_BITMAP is set. The paranoid WARN_ON_ONCE() handles the case where the flag and the pointer got out of sync. In this theoretical scenario, which presumes some other bug in the code that triggers the WARN_ON_ONCe(), return early, instead of continuing and dereferencing a NULL pointer. [ mingo: Clarified the changelog. ] Signed-off-by: Li RongQing <lirongqing@baidu.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Sohil Mehta <sohil.mehta@intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Link: https://patch.msgid.link/20260615070115.4720-1-lirongqing@baidu.com |
||
Colton Jones
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f61bc797ac |
ALSA: hda/realtek: Add CS35L41 I2C quirk for ASUS UM3405GA
The ASUS Zenbook 14 UM3405GA uses a Realtek ALC294 codec with two Cirrus Logic CS35L41 speaker amplifiers exposed through the CSC3551 ACPI device. The machine reports the Realtek subsystem ID 1043:19f4. Without a PCI quirk, the codec falls back to generic pin matching and the internal speakers remain silent even though PCM playback completes. Add the UM3405GA subsystem ID and reuse the same ASUS I2C headset-mic fixup used by the closely related UM3406HA. That fixup configures the headset microphone pin and chains to CS35L41 I2C speaker-amp binding. Signed-off-by: Colton Jones <cjones1308@pm.me> Link: https://patch.msgid.link/20260615033619.7-1-cjones1308@pm.me Signed-off-by: Takashi Iwai <tiwai@suse.de> |
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Takashi Iwai
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9afa4bc774 |
Merge branch 'for-linus' into for-next
Signed-off-by: Takashi Iwai <tiwai@suse.de> |