39aead8373
3434 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Joe Perches
|
33def8498f |
treewide: Convert macro and uses of __section(foo) to __section("foo")
Use a more generic form for __section that requires quotes to avoid
complications with clang and gcc differences.
Remove the quote operator # from compiler_attributes.h __section macro.
Convert all unquoted __section(foo) uses to quoted __section("foo").
Also convert __attribute__((section("foo"))) uses to __section("foo")
even if the __attribute__ has multiple list entry forms.
Conversion done using the script at:
https://lore.kernel.org/lkml/75393e5ddc272dc7403de74d645e6c6e0f4e70eb.camel@perches.com/2-convert_section.pl
Signed-off-by: Joe Perches <joe@perches.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@gooogle.com>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
||
Linus Torvalds
|
746b25b1aa |
Kbuild updates for v5.10
- Support 'make compile_commands.json' to generate the compilation
database more easily, avoiding stale entries
- Support 'make clang-analyzer' and 'make clang-tidy' for static checks
using clang-tidy
- Preprocess scripts/modules.lds.S to allow CONFIG options in the module
linker script
- Drop cc-option tests from compiler flags supported by our minimal
GCC/Clang versions
- Use always 12-digits commit hash for CONFIG_LOCALVERSION_AUTO=y
- Use sha1 build id for both BFD linker and LLD
- Improve deb-pkg for reproducible builds and rootless builds
- Remove stale, useless scripts/namespace.pl
- Turn -Wreturn-type warning into error
- Fix build error of deb-pkg when CONFIG_MODULES=n
- Replace 'hostname' command with more portable 'uname -n'
- Various Makefile cleanups
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Merge tag 'kbuild-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- Support 'make compile_commands.json' to generate the compilation
database more easily, avoiding stale entries
- Support 'make clang-analyzer' and 'make clang-tidy' for static checks
using clang-tidy
- Preprocess scripts/modules.lds.S to allow CONFIG options in the
module linker script
- Drop cc-option tests from compiler flags supported by our minimal
GCC/Clang versions
- Use always 12-digits commit hash for CONFIG_LOCALVERSION_AUTO=y
- Use sha1 build id for both BFD linker and LLD
- Improve deb-pkg for reproducible builds and rootless builds
- Remove stale, useless scripts/namespace.pl
- Turn -Wreturn-type warning into error
- Fix build error of deb-pkg when CONFIG_MODULES=n
- Replace 'hostname' command with more portable 'uname -n'
- Various Makefile cleanups
* tag 'kbuild-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (34 commits)
kbuild: Use uname for LINUX_COMPILE_HOST detection
kbuild: Only add -fno-var-tracking-assignments for old GCC versions
kbuild: remove leftover comment for filechk utility
treewide: remove DISABLE_LTO
kbuild: deb-pkg: clean up package name variables
kbuild: deb-pkg: do not build linux-headers package if CONFIG_MODULES=n
kbuild: enforce -Werror=return-type
scripts: remove namespace.pl
builddeb: Add support for all required debian/rules targets
builddeb: Enable rootless builds
builddeb: Pass -n to gzip for reproducible packages
kbuild: split the build log of kallsyms
kbuild: explicitly specify the build id style
scripts/setlocalversion: make git describe output more reliable
kbuild: remove cc-option test of -Werror=date-time
kbuild: remove cc-option test of -fno-stack-check
kbuild: remove cc-option test of -fno-strict-overflow
kbuild: move CFLAGS_{KASAN,UBSAN,KCSAN} exports to relevant Makefiles
kbuild: remove redundant CONFIG_KASAN check from scripts/Makefile.kasan
kbuild: do not create built-in objects for external module builds
...
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||
|
Linus Torvalds
|
00937f36b0 |
pci-v5.10-changes
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Merge tag 'pci-v5.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"Enumeration:
- Print IRQ number used by PCIe Link Bandwidth Notification (Dongdong
Liu)
- Add schedule point in pci_read_config() to reduce max latency
(Jiang Biao)
- Add Kconfig options for MPS/MRRS strategy (Jim Quinlan)
Resource management:
- Fix pci_iounmap() memory leak when !CONFIG_GENERIC_IOMAP (Lorenzo
Pieralisi)
PCIe native device hotplug:
- Reduce noisiness on hot removal (Lukas Wunner)
Power management:
- Revert "PCI/PM: Apply D2 delay as milliseconds, not microseconds"
that was done on the basis of spec typo (Bjorn Helgaas)
- Rename pci_dev.d3_delay to d3hot_delay to remove D3hot/D3cold
ambiguity (Krzysztof Wilczyński)
- Remove unused pcibios_pm_ops (Vaibhav Gupta)
IOMMU:
- Enable Translation Blocking for external devices to harden against
DMA attacks (Rajat Jain)
Error handling:
- Add an ACPI APEI notifier chain for vendor CPER records to enable
device-specific error handling (Shiju Jose)
ASPM:
- Remove struct aspm_register_info to simplify code (Saheed O.
Bolarinwa)
Amlogic Meson PCIe controller driver:
- Build as module by default (Kevin Hilman)
Ampere Altra PCIe controller driver:
- Add MCFG quirk to work around non-standard ECAM implementation
(Tuan Phan)
Broadcom iProc PCIe controller driver:
- Set affinity mask on MSI interrupts (Mark Tomlinson)
Broadcom STB PCIe controller driver:
- Make PCIE_BRCMSTB depend on ARCH_BRCMSTB (Jim Quinlan)
- Add DT bindings for more Brcmstb chips (Jim Quinlan)
- Add bcm7278 register info (Jim Quinlan)
- Add bcm7278 PERST# support (Jim Quinlan)
- Add suspend and resume pm_ops (Jim Quinlan)
- Add control of rescal reset (Jim Quinlan)
- Set additional internal memory DMA viewport sizes (Jim Quinlan)
- Accommodate MSI for older chips (Jim Quinlan)
- Set bus max burst size by chip type (Jim Quinlan)
- Add support for bcm7211, bcm7216, bcm7445, bcm7278 (Jim Quinlan)
Freescale i.MX6 PCIe controller driver:
- Use dev_err_probe() to reduce redundant messages (Anson Huang)
Freescale Layerscape PCIe controller driver:
- Enforce 4K DMA buffer alignment in endpoint test (Hou Zhiqiang)
- Add DT compatible strings for ls1088a, ls2088a (Xiaowei Bao)
- Add endpoint support for ls1088a, ls2088a (Xiaowei Bao)
- Add endpoint test support for lS1088a (Xiaowei Bao)
- Add MSI-X support for ls1088a (Xiaowei Bao)
HiSilicon HIP PCIe controller driver:
- Handle HIP-specific errors via ACPI APEI (Yicong Yang)
HiSilicon Kirin PCIe controller driver:
- Return -EPROBE_DEFER if the GPIO isn't ready (Bean Huo)
Intel VMD host bridge driver:
- Factor out physical offset, bus offset, IRQ domain, IRQ allocation
(Jon Derrick)
- Use generic PCI PM correctly (Jon Derrick)
Marvell Aardvark PCIe controller driver:
- Fix compilation on s390 (Pali Rohár)
- Implement driver 'remove' function and allow to build it as module
(Pali Rohár)
- Move PCIe reset card code to advk_pcie_train_link() (Pali Rohár)
- Convert mvebu a3700 internal SMCC firmware return codes to errno
(Pali Rohár)
- Fix initialization with old Marvell's Arm Trusted Firmware (Pali
Rohár)
Microsoft Hyper-V host bridge driver:
- Fix hibernation in case interrupts are not re-created (Dexuan Cui)
NVIDIA Tegra PCIe controller driver:
- Stop checking return value of debugfs_create() functions (Greg
Kroah-Hartman)
- Convert to use DEFINE_SEQ_ATTRIBUTE macro (Liu Shixin)
Qualcomm PCIe controller driver:
- Reset PCIe to work around Qsdk U-Boot issue (Ansuel Smith)
Renesas R-Car PCIe controller driver:
- Add DT documentation for r8a774a1, r8a774b1, r8a774e1 endpoints
(Lad Prabhakar)
- Add RZ/G2M, RZ/G2N, RZ/G2H IDs to endpoint test (Lad Prabhakar)
- Add DT support for r8a7742 (Lad Prabhakar)
Socionext UniPhier Pro5 controller driver:
- Add DT descriptions of iATU register (host and endpoint) (Kunihiko
Hayashi)
Synopsys DesignWare PCIe controller driver:
- Add link up check in dw_child_pcie_ops.map_bus() (racy, but seems
unavoidable) (Hou Zhiqiang)
- Fix endpoint Header Type check so multi-function devices work (Hou
Zhiqiang)
- Skip PCIE_MSI_INTR0* programming if MSI is disabled (Jisheng Zhang)
- Stop leaking MSI page in suspend/resume (Jisheng Zhang)
- Add common iATU register support instead of keystone-specific code
(Kunihiko Hayashi)
- Major config space access and other cleanups in dwc core and
drivers that use it (al, exynos, histb, imx6, intel-gw, keystone,
kirin, meson, qcom, tegra) (Rob Herring)
- Add multiple PFs support for endpoint (Xiaowei Bao)
- Add MSI-X doorbell mode in endpoint mode (Xiaowei Bao)
Miscellaneous:
- Use fallthrough pseudo-keyword (Gustavo A. R. Silva)
- Fix "0 used as NULL pointer" warnings (Gustavo Pimentel)
- Fix "cast truncates bits from constant value" warnings (Gustavo
Pimentel)
- Remove redundant zeroing for sg_init_table() (Julia Lawall)
- Use scnprintf(), not snprintf(), in sysfs "show" functions
(Krzysztof Wilczyński)
- Remove unused assignments (Krzysztof Wilczyński)
- Fix "0 used as NULL pointer" warning (Krzysztof Wilczyński)
- Simplify bool comparisons (Krzysztof Wilczyński)
- Use for_each_child_of_node() and for_each_node_by_name() (Qinglang
Miao)
- Simplify return expressions (Qinglang Miao)"
* tag 'pci-v5.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (147 commits)
PCI: vmd: Update VMD PM to correctly use generic PCI PM
PCI: vmd: Create IRQ allocation helper
PCI: vmd: Create IRQ Domain configuration helper
PCI: vmd: Create bus offset configuration helper
PCI: vmd: Create physical offset helper
PCI: v3-semi: Remove unneeded break
PCI: dwc: Add link up check in dw_child_pcie_ops.map_bus()
PCI/ASPM: Remove struct pcie_link_state.l1ss
PCI/ASPM: Remove struct aspm_register_info.l1ss_cap
PCI/ASPM: Pass L1SS Capabilities value, not struct aspm_register_info
PCI/ASPM: Remove struct aspm_register_info.l1ss_ctl1
PCI/ASPM: Remove struct aspm_register_info.l1ss_ctl2 (unused)
PCI/ASPM: Remove struct aspm_register_info.l1ss_cap_ptr
PCI/ASPM: Remove struct aspm_register_info.latency_encoding
PCI/ASPM: Remove struct aspm_register_info.enabled
PCI/ASPM: Remove struct aspm_register_info.support
PCI/ASPM: Use 'parent' and 'child' for readability
PCI/ASPM: Move LTR path check to where it's used
PCI/ASPM: Move pci_clear_and_set_dword() earlier
PCI: dwc: Fix MSI page leakage in suspend/resume
...
|
||
|
Linus Torvalds
|
5a32c3413d |
dma-mapping updates for 5.10
- rework the non-coherent DMA allocator
- move private definitions out of <linux/dma-mapping.h>
- lower CMA_ALIGNMENT (Paul Cercueil)
- remove the omap1 dma address translation in favor of the common
code
- make dma-direct aware of multiple dma offset ranges (Jim Quinlan)
- support per-node DMA CMA areas (Barry Song)
- increase the default seg boundary limit (Nicolin Chen)
- misc fixes (Robin Murphy, Thomas Tai, Xu Wang)
- various cleanups
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Merge tag 'dma-mapping-5.10' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping updates from Christoph Hellwig:
- rework the non-coherent DMA allocator
- move private definitions out of <linux/dma-mapping.h>
- lower CMA_ALIGNMENT (Paul Cercueil)
- remove the omap1 dma address translation in favor of the common code
- make dma-direct aware of multiple dma offset ranges (Jim Quinlan)
- support per-node DMA CMA areas (Barry Song)
- increase the default seg boundary limit (Nicolin Chen)
- misc fixes (Robin Murphy, Thomas Tai, Xu Wang)
- various cleanups
* tag 'dma-mapping-5.10' of git://git.infradead.org/users/hch/dma-mapping: (63 commits)
ARM/ixp4xx: add a missing include of dma-map-ops.h
dma-direct: simplify the DMA_ATTR_NO_KERNEL_MAPPING handling
dma-direct: factor out a dma_direct_alloc_from_pool helper
dma-direct check for highmem pages in dma_direct_alloc_pages
dma-mapping: merge <linux/dma-noncoherent.h> into <linux/dma-map-ops.h>
dma-mapping: move large parts of <linux/dma-direct.h> to kernel/dma
dma-mapping: move dma-debug.h to kernel/dma/
dma-mapping: remove <asm/dma-contiguous.h>
dma-mapping: merge <linux/dma-contiguous.h> into <linux/dma-map-ops.h>
dma-contiguous: remove dma_contiguous_set_default
dma-contiguous: remove dev_set_cma_area
dma-contiguous: remove dma_declare_contiguous
dma-mapping: split <linux/dma-mapping.h>
cma: decrease CMA_ALIGNMENT lower limit to 2
firewire-ohci: use dma_alloc_pages
dma-iommu: implement ->alloc_noncoherent
dma-mapping: add new {alloc,free}_noncoherent dma_map_ops methods
dma-mapping: add a new dma_alloc_pages API
dma-mapping: remove dma_cache_sync
53c700: convert to dma_alloc_noncoherent
...
|
||
|
Linus Torvalds
|
0b8417c141 |
Power management updates for 5.10-rc1
- Rework cpufreq statistics collection to allow it to take place
when fast frequency switching is enabled in the governor (Viresh
Kumar).
- Make the cpufreq core set the frequency scale on behalf of the
driver and update several cpufreq drivers accordingly (Ionela
Voinescu, Valentin Schneider).
- Add new hardware support to the STI and qcom cpufreq drivers and
improve them (Alain Volmat, Manivannan Sadhasivam).
- Fix multiple assorted issues in cpufreq drivers (Jon Hunter,
Krzysztof Kozlowski, Matthias Kaehlcke, Pali Rohár, Stephan
Gerhold, Viresh Kumar).
- Fix several assorted issues in the operating performance points
(OPP) framework (Stephan Gerhold, Viresh Kumar).
- Allow devfreq drivers to fetch devfreq instances by DT enumeration
instead of using explicit phandles and modify the devfreq core
code to support driver-specific devfreq DT bindings (Leonard
Crestez, Chanwoo Choi).
- Improve initial hardware resetting in the tegra30 devfreq driver
and clean up the tegra cpuidle driver (Dmitry Osipenko).
- Update the cpuidle core to collect state entry rejection
statistics and expose them via sysfs (Lina Iyer).
- Improve the ACPI _CST code handling diagnostics (Chen Yu).
- Update the PSCI cpuidle driver to allow the PM domain
initialization to occur in the OSI mode as well as in the PC
mode (Ulf Hansson).
- Rework the generic power domains (genpd) core code to allow
domain power off transition to be aborted in the absence of the
"power off" domain callback (Ulf Hansson).
- Fix two suspend-to-idle issues in the ACPI EC driver (Rafael
Wysocki).
- Fix the handling of timer_expires in the PM-runtime framework on
32-bit systems and the handling of device links in it (Grygorii
Strashko, Xiang Chen).
- Add IO requests batching support to the hibernate image saving and
reading code and drop a bogus get_gendisk() from there (Xiaoyi
Chen, Christoph Hellwig).
- Allow PCIe ports to be put into the D3cold power state if they
are power-manageable via ACPI (Lukas Wunner).
- Add missing header file include to a power capping driver (Pujin
Shi).
- Clean up the qcom-cpr AVS driver a bit (Liu Shixin).
- Kevin Hilman steps down as designated reviwer of adaptive voltage
scaling (AVS) driverrs (Kevin Hilman).
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Merge tag 'pm-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"These rework the collection of cpufreq statistics to allow it to take
place if fast frequency switching is enabled in the governor, rework
the frequency invariance handling in the cpufreq core and drivers, add
new hardware support to a couple of cpufreq drivers, fix a number of
assorted issues and clean up the code all over.
Specifics:
- Rework cpufreq statistics collection to allow it to take place when
fast frequency switching is enabled in the governor (Viresh Kumar).
- Make the cpufreq core set the frequency scale on behalf of the
driver and update several cpufreq drivers accordingly (Ionela
Voinescu, Valentin Schneider).
- Add new hardware support to the STI and qcom cpufreq drivers and
improve them (Alain Volmat, Manivannan Sadhasivam).
- Fix multiple assorted issues in cpufreq drivers (Jon Hunter,
Krzysztof Kozlowski, Matthias Kaehlcke, Pali Rohár, Stephan
Gerhold, Viresh Kumar).
- Fix several assorted issues in the operating performance points
(OPP) framework (Stephan Gerhold, Viresh Kumar).
- Allow devfreq drivers to fetch devfreq instances by DT enumeration
instead of using explicit phandles and modify the devfreq core code
to support driver-specific devfreq DT bindings (Leonard Crestez,
Chanwoo Choi).
- Improve initial hardware resetting in the tegra30 devfreq driver
and clean up the tegra cpuidle driver (Dmitry Osipenko).
- Update the cpuidle core to collect state entry rejection statistics
and expose them via sysfs (Lina Iyer).
- Improve the ACPI _CST code handling diagnostics (Chen Yu).
- Update the PSCI cpuidle driver to allow the PM domain
initialization to occur in the OSI mode as well as in the PC mode
(Ulf Hansson).
- Rework the generic power domains (genpd) core code to allow domain
power off transition to be aborted in the absence of the "power
off" domain callback (Ulf Hansson).
- Fix two suspend-to-idle issues in the ACPI EC driver (Rafael
Wysocki).
- Fix the handling of timer_expires in the PM-runtime framework on
32-bit systems and the handling of device links in it (Grygorii
Strashko, Xiang Chen).
- Add IO requests batching support to the hibernate image saving and
reading code and drop a bogus get_gendisk() from there (Xiaoyi
Chen, Christoph Hellwig).
- Allow PCIe ports to be put into the D3cold power state if they are
power-manageable via ACPI (Lukas Wunner).
- Add missing header file include to a power capping driver (Pujin
Shi).
- Clean up the qcom-cpr AVS driver a bit (Liu Shixin).
- Kevin Hilman steps down as designated reviwer of adaptive voltage
scaling (AVS) drivers (Kevin Hilman)"
* tag 'pm-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (65 commits)
cpufreq: stats: Fix string format specifier mismatch
arm: disable frequency invariance for CONFIG_BL_SWITCHER
cpufreq,arm,arm64: restructure definitions of arch_set_freq_scale()
cpufreq: stats: Add memory barrier to store_reset()
cpufreq: schedutil: Simplify sugov_fast_switch()
ACPI: EC: PM: Drop ec_no_wakeup check from acpi_ec_dispatch_gpe()
ACPI: EC: PM: Flush EC work unconditionally after wakeup
PCI/ACPI: Whitelist hotplug ports for D3 if power managed by ACPI
PM: hibernate: remove the bogus call to get_gendisk() in software_resume()
cpufreq: Move traces and update to policy->cur to cpufreq core
cpufreq: stats: Enable stats for fast-switch as well
cpufreq: stats: Mark few conditionals with unlikely()
cpufreq: stats: Remove locking
cpufreq: stats: Defer stats update to cpufreq_stats_record_transition()
PM: domains: Allow to abort power off when no ->power_off() callback
PM: domains: Rename power state enums for genpd
PM / devfreq: tegra30: Improve initial hardware resetting
PM / devfreq: event: Change prototype of devfreq_event_get_edev_by_phandle function
PM / devfreq: Change prototype of devfreq_get_devfreq_by_phandle function
PM / devfreq: Add devfreq_get_devfreq_by_node function
...
|
||
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Linus Torvalds
|
a09b1d7850 |
xen: branch for v5.10-rc1
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRTLbB6QfY48x44uB6AXGG7T9hjvgUCX4aNVgAKCRCAXGG7T9hj vlrDAQDQ2qelTKKMEV9atKr0RTkHAKrhUidzlTINjFx7BIrTfQEA7TmDr3j0weQU 521+bxE803OEWElp2Qta30boXgGGXQo= =jKt7 -----END PGP SIGNATURE----- Merge tag 'for-linus-5.10b-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen updates from Juergen Gross: - two small cleanup patches - avoid error messages when initializing MCA banks in a Xen dom0 - a small series for converting the Xen gntdev driver to use pin_user_pages*() instead of get_user_pages*() - intermediate fix for running as a Xen guest on Arm with KPTI enabled (the final solution will need new Xen functionality) * tag 'for-linus-5.10b-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: x86/xen: Fix typo in xen_pagetable_p2m_free() x86/xen: disable Firmware First mode for correctable memory errors xen/arm: do not setup the runstate info page if kpti is enabled xen: remove redundant initialization of variable ret xen/gntdev.c: Convert get_user_pages*() to pin_user_pages*() xen/gntdev.c: Mark pages as dirty |
||
Matthew Wilcox
|
b2b29d6d01 |
mm: account PMD tables like PTE tables
We account the PTE level of the page tables to the process in order to make smarter OOM decisions and help diagnose why memory is fragmented. For these same reasons, we should account pages allocated for PMDs. With larger process address spaces and ASLR, the number of PMDs in use is higher than it used to be so the inaccuracy is starting to matter. [rppt@linux.ibm.com: arm: __pmd_free_tlb(): call page table destructor] Link: https://lkml.kernel.org/r/20200825111303.GB69694@linux.ibm.com Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Mike Rapoport <rppt@linux.ibm.com> Cc: Abdul Haleem <abdhalee@linux.vnet.ibm.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Joerg Roedel <joro@8bytes.org> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com> Cc: Stafford Horne <shorne@gmail.com> Cc: Naresh Kamboju <naresh.kamboju@linaro.org> Cc: Anders Roxell <anders.roxell@linaro.org> Link: http://lkml.kernel.org/r/20200627184642.GF25039@casper.infradead.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds
|
c90578360c |
Merge branch 'work.csum_and_copy' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull copy_and_csum cleanups from Al Viro:
"Saner calling conventions for csum_and_copy_..._user() and friends"
[ Removing 800+ lines of code and cleaning stuff up is good - Linus ]
* 'work.csum_and_copy' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
ppc: propagate the calling conventions change down to csum_partial_copy_generic()
amd64: switch csum_partial_copy_generic() to new calling conventions
sparc64: propagate the calling convention changes down to __csum_partial_copy_...()
xtensa: propagate the calling conventions change down into csum_partial_copy_generic()
mips: propagate the calling convention change down into __csum_partial_copy_..._user()
mips: __csum_partial_copy_kernel() has no users left
mips: csum_and_copy_{to,from}_user() are never called under KERNEL_DS
sparc32: propagate the calling conventions change down to __csum_partial_copy_sparc_generic()
i386: propagate the calling conventions change down to csum_partial_copy_generic()
sh: propage the calling conventions change down to csum_partial_copy_generic()
m68k: get rid of zeroing destination on error in csum_and_copy_from_user()
arm: propagate the calling convention changes down to csum_partial_copy_from_user()
alpha: propagate the calling convention changes down to csum_partial_copy.c helpers
saner calling conventions for csum_and_copy_..._user()
csum_and_copy_..._user(): pass 0xffffffff instead of 0 as initial sum
csum_partial_copy_nocheck(): drop the last argument
unify generic instances of csum_partial_copy_nocheck()
icmp_push_reply(): reorder adding the checksum up
skb_copy_and_csum_bits(): don't bother with the last argument
|
||
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Linus Torvalds
|
34eb62d868 |
Orphan link sections were a long-standing source of obscure bugs,
because the heuristics that various linkers & compilers use to handle them (include these bits into the output image vs discarding them silently) are both highly idiosyncratic and also version dependent. Instead of this historically problematic mess, this tree by Kees Cook (et al) adds build time asserts and build time warnings if there's any orphan section in the kernel or if a section is not sized as expected. And because we relied on so many silent assumptions in this area, fix a metric ton of dependencies and some outright bugs related to this, before we can finally enable the checks on the x86, ARM and ARM64 platforms. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAl+Edv4RHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1hiKBAApdJEOaK7hMc3013DYNctklIxEPJL2mFJ 11YJRIh4pUJTF0TE+EHT/D+rSIuRsyuoSmOQBQ61/wVSnyG067GjjVJRqh/eYaJ1 fDhJi2FuHOjXl+CiN0KxzBjjp+V4NhF7jHT59tpQSvfZeg7FjteoxfztxaCp5ek3 S3wHB3CC4c4jE3lfjHem1E9/PwT4kwPYx1c3gAUdEqJdjkihjX9fWusfjLeqW6/d Y5VkApi6bL9XiZUZj5l0dEIweLJJ86+PkKJqpo3spxxEak1LSn1MEix+lcJ8e1Kg sb/bEEivDcmFlFWOJnn0QLquCR0Cx5bz1pwsL0tuf0yAd4+sXX5IMuGUysZlEdKM BHL9h5HbevGF4BScwZwZH7lyEg7q67s5KnRu4hxy0Swfcj7y0oT/9lXqpbpZ2DqO Hd+bRRQKIbqnTMp0hcit9LfpLp93vj0dBlaV5ocAJJlu62u9VnwGG5HQuZ5giLUr kA1SLw63Y1wopFRxgFyER8les7eLsu0zxHeK44rRVlVnfI99OMTOgVNicmDFy3Fm AfcnfJG0BqBEJGQz5es34uQQKKBwFPtC9NztopI62KiwOspYYZyrO1BNxdOc6DlS mIHrmO89HMXuid5eolvLaFqUWirHoWO8TlycgZxUWVHc2txVPjAEU/axouU/dSSU w/6GpzAa+7g= =fXAw -----END PGP SIGNATURE----- Merge tag 'core-build-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull orphan section checking from Ingo Molnar: "Orphan link sections were a long-standing source of obscure bugs, because the heuristics that various linkers & compilers use to handle them (include these bits into the output image vs discarding them silently) are both highly idiosyncratic and also version dependent. Instead of this historically problematic mess, this tree by Kees Cook (et al) adds build time asserts and build time warnings if there's any orphan section in the kernel or if a section is not sized as expected. And because we relied on so many silent assumptions in this area, fix a metric ton of dependencies and some outright bugs related to this, before we can finally enable the checks on the x86, ARM and ARM64 platforms" * tag 'core-build-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits) x86/boot/compressed: Warn on orphan section placement x86/build: Warn on orphan section placement arm/boot: Warn on orphan section placement arm/build: Warn on orphan section placement arm64/build: Warn on orphan section placement x86/boot/compressed: Add missing debugging sections to output x86/boot/compressed: Remove, discard, or assert for unwanted sections x86/boot/compressed: Reorganize zero-size section asserts x86/build: Add asserts for unwanted sections x86/build: Enforce an empty .got.plt section x86/asm: Avoid generating unused kprobe sections arm/boot: Handle all sections explicitly arm/build: Assert for unwanted sections arm/build: Add missing sections arm/build: Explicitly keep .ARM.attributes sections arm/build: Refactor linker script headers arm64/build: Assert for unwanted sections arm64/build: Add missing DWARF sections arm64/build: Use common DISCARDS in linker script arm64/build: Remove .eh_frame* sections due to unwind tables ... |
||
|
Linus Torvalds
|
e6412f9833 |
EFI changes for v5.10:
- Preliminary RISC-V enablement - the bulk of it will arrive via the RISCV tree.
- Relax decompressed image placement rules for 32-bit ARM
- Add support for passing MOK certificate table contents via a config table
rather than a EFI variable.
- Add support for 18 bit DIMM row IDs in the CPER records.
- Work around broken Dell firmware that passes the entire Boot#### variable
contents as the command line
- Add definition of the EFI_MEMORY_CPU_CRYPTO memory attribute so we can
identify it in the memory map listings.
- Don't abort the boot on arm64 if the EFI RNG protocol is available but
returns with an error
- Replace slashes with exclamation marks in efivarfs file names
- Split efi-pstore from the deprecated efivars sysfs code, so we can
disable the latter on !x86.
- Misc fixes, cleanups and updates.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'efi-core-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI changes from Ingo Molnar:
- Preliminary RISC-V enablement - the bulk of it will arrive via the
RISCV tree.
- Relax decompressed image placement rules for 32-bit ARM
- Add support for passing MOK certificate table contents via a config
table rather than a EFI variable.
- Add support for 18 bit DIMM row IDs in the CPER records.
- Work around broken Dell firmware that passes the entire Boot####
variable contents as the command line
- Add definition of the EFI_MEMORY_CPU_CRYPTO memory attribute so we
can identify it in the memory map listings.
- Don't abort the boot on arm64 if the EFI RNG protocol is available
but returns with an error
- Replace slashes with exclamation marks in efivarfs file names
- Split efi-pstore from the deprecated efivars sysfs code, so we can
disable the latter on !x86.
- Misc fixes, cleanups and updates.
* tag 'efi-core-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (26 commits)
efi: mokvar: add missing include of asm/early_ioremap.h
efi: efivars: limit availability to X86 builds
efi: remove some false dependencies on CONFIG_EFI_VARS
efi: gsmi: fix false dependency on CONFIG_EFI_VARS
efi: efivars: un-export efivars_sysfs_init()
efi: pstore: move workqueue handling out of efivars
efi: pstore: disentangle from deprecated efivars module
efi: mokvar-table: fix some issues in new code
efi/arm64: libstub: Deal gracefully with EFI_RNG_PROTOCOL failure
efivarfs: Replace invalid slashes with exclamation marks in dentries.
efi: Delete deprecated parameter comments
efi/libstub: Fix missing-prototypes in string.c
efi: Add definition of EFI_MEMORY_CPU_CRYPTO and ability to report it
cper,edac,efi: Memory Error Record: bank group/address and chip id
edac,ghes,cper: Add Row Extension to Memory Error Record
efi/x86: Add a quirk to support command line arguments on Dell EFI firmware
efi/libstub: Add efi_warn and *_once logging helpers
integrity: Load certs from the EFI MOK config table
integrity: Move import of MokListRT certs to a separate routine
efi: Support for MOK variable config table
...
|
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Ionela Voinescu
|
6699e91c07 |
arm: disable frequency invariance for CONFIG_BL_SWITCHER
big.LITTLE switching complicates the setting of a correct cpufreq-based frequency invariance scale factor due to (as observed in drivers/cpufreq/vexpress-spc-cpufreq.c): - Incorrect current and maximum frequencies as a result of the exposure of a virtual frequency table to the cpufreq core, - Missed updates as a result of asynchronous frequency adjustments caused by frequency changes in other CPU pairs. Given that its functionality is atypical in regards to frequency invariance and this is an old technology, disable frequency invariance for when big.LITTLE switching is configured in to prevent incorrect scale setting. Signed-off-by: Ionela Voinescu <ionela.voinescu@arm.com> Suggested-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Ionela Voinescu
|
a20b7053b5 |
cpufreq,arm,arm64: restructure definitions of arch_set_freq_scale()
Compared to other arch_* functions, arch_set_freq_scale() has an atypical weak definition that can be replaced by a strong architecture specific implementation. The more typical support for architectural functions involves defining an empty stub in a header file if the symbol is not already defined in architecture code. Some examples involve: - #define arch_scale_freq_capacity topology_get_freq_scale - #define arch_scale_freq_invariant topology_scale_freq_invariant - #define arch_scale_cpu_capacity topology_get_cpu_scale - #define arch_update_cpu_topology topology_update_cpu_topology - #define arch_scale_thermal_pressure topology_get_thermal_pressure - #define arch_set_thermal_pressure topology_set_thermal_pressure Bring arch_set_freq_scale() in line with these functions by renaming it to topology_set_freq_scale() in the arch topology driver, and by defining the arch_set_freq_scale symbol to point to the new function for arm and arm64. While there are other users of the arch_topology driver, this patch defines arch_set_freq_scale for arm and arm64 only, due to their existing definitions of arch_scale_freq_capacity. This is the getter function of the frequency invariance scale factor and without a getter function, the setter function - arch_set_freq_scale() has not purpose. Signed-off-by: Ionela Voinescu <ionela.voinescu@arm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Sudeep Holla <sudeep.holla@arm.com> (BL_SWITCHER and topology parts) Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Christoph Hellwig
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a1fd09e8e6 |
dma-mapping: move dma-debug.h to kernel/dma/
Most of dma-debug.h is not required by anything outside of kernel/dma. Move the four declarations needed by dma-mappin.h or dma-ops providers into dma-mapping.h and dma-map-ops.h, and move the remainder of the file to kernel/dma/debug.h. Signed-off-by: Christoph Hellwig <hch@lst.de> |
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Christoph Hellwig
|
5db5d93089 |
dma-mapping: remove <asm/dma-contiguous.h>
Just provide a weak default definition of dma_contiguous_early_fixup and let arm override it. Signed-off-by: Christoph Hellwig <hch@lst.de> |
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Stefano Stabellini
|
f88af7229f |
xen/arm: do not setup the runstate info page if kpti is enabled
The VCPUOP_register_runstate_memory_area hypercall takes a virtual address of a buffer as a parameter. The semantics of the hypercall are such that the virtual address should always be valid. When KPTI is enabled and we are running userspace code, the virtual address is not valid, thus, Linux is violating the semantics of VCPUOP_register_runstate_memory_area. Do not call VCPUOP_register_runstate_memory_area when KPTI is enabled. Signed-off-by: Stefano Stabellini <stefano.stabellini@xilinx.com> CC: Bertrand Marquis <Bertrand.Marquis@arm.com> CC: boris.ostrovsky@oracle.com CC: jgross@suse.com Link: https://lore.kernel.org/r/20200924234955.15455-1-sstabellini@kernel.org Reviewed-by: Bertrand Marquis <bertrand.marquis@arm.com> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> |
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Christoph Hellwig
|
38225f2ef2 |
ARM/omap1: switch to use dma_direct_set_offset for lbus DMA offsets
Switch the omap1510 platform ohci device to use dma_direct_set_offset to set the DMA offset instead of using direct hooks into the DMA mapping code and remove the now unused hooks. Signed-off-by: Christoph Hellwig <hch@lst.de> Tested-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Acked-by: Tony Lindgren <tony@atomide.com> |
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Masahiro Yamada
|
596b0474d3 |
kbuild: preprocess module linker script
There was a request to preprocess the module linker script like we do for the vmlinux one. (https://lkml.org/lkml/2020/8/21/512) The difference between vmlinux.lds and module.lds is that the latter is needed for external module builds, thus must be cleaned up by 'make mrproper' instead of 'make clean'. Also, it must be created by 'make modules_prepare'. You cannot put it in arch/$(SRCARCH)/kernel/, which is cleaned up by 'make clean'. I moved arch/$(SRCARCH)/kernel/module.lds to arch/$(SRCARCH)/include/asm/module.lds.h, which is included from scripts/module.lds.S. scripts/module.lds is fine because 'make clean' keeps all the build artifacts under scripts/. You can add arch-specific sections in <asm/module.lds.h>. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Jessica Yu <jeyu@kernel.org> Acked-by: Will Deacon <will@kernel.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Palmer Dabbelt <palmerdabbelt@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: Jessica Yu <jeyu@kernel.org> |
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Lorenzo Pieralisi
|
fc177304d1 |
ARM/PCI: Remove unused fields from struct hw_pci
The msi_ctrl, io_optional and align_resource fields in struct hw_pci are currently unused by arm/mach PCI host controller drivers and we won't be adding any new users. Remove them and related code. Link: https://lore.kernel.org/r/20200904141607.4066-1-lorenzo.pieralisi@arm.com Link: https://lore.kernel.org/r/20200916103045.28651-1-lorenzo.pieralisi@arm.com Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Rob Herring <robh@kernel.org> Cc: Rob Herring <robh@kernel.org> Cc: Russell King <linux@armlinux.org.uk> |
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Valentin Schneider
|
15e5d5b45b |
arch_topology, arm, arm64: define arch_scale_freq_invariant()
arch_scale_freq_invariant() is used by schedutil to determine whether
the scheduler's load-tracking signals are frequency invariant. Its
definition is overridable, though by default it is hardcoded to 'true'
if arch_scale_freq_capacity() is defined ('false' otherwise).
This behaviour is not overridden on arm, arm64 and other users of the
generic arch topology driver, which is somewhat precarious:
arch_scale_freq_capacity() will always be defined, yet not all cpufreq
drivers are guaranteed to drive the frequency invariance scale factor
setting. In other words, the load-tracking signals may very well *not*
be frequency invariant.
Now that cpufreq can be queried on whether the current driver is driving
the Frequency Invariance (FI) scale setting, the current situation can
be improved. This combines the query of whether cpufreq supports the
setting of the frequency scale factor, with whether all online CPUs are
counter-based FI enabled.
While cpufreq FI enablement applies at system level, for all CPUs,
counter-based FI support could also be used for only a subset of CPUs to
set the invariance scale factor. Therefore, if cpufreq-based FI support
is present, we consider the system to be invariant. If missing, we
require all online CPUs to be counter-based FI enabled in order for the
full system to be considered invariant.
If the system ends up not being invariant, a new condition is needed in
the counter initialization code that disables all scale factor setting
based on counters.
Precedence of counters over cpufreq use is not important here. The
invariant status is only given to the system if all CPUs have at least
one method of setting the frequency scale factor.
Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
Signed-off-by: Ionela Voinescu <ionela.voinescu@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
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Jim Quinlan
|
e0d072782c |
dma-mapping: introduce DMA range map, supplanting dma_pfn_offset
The new field 'dma_range_map' in struct device is used to facilitate the use of single or multiple offsets between mapping regions of cpu addrs and dma addrs. It subsumes the role of "dev->dma_pfn_offset" which was only capable of holding a single uniform offset and had no region bounds checking. The function of_dma_get_range() has been modified so that it takes a single argument -- the device node -- and returns a map, NULL, or an error code. The map is an array that holds the information regarding the DMA regions. Each range entry contains the address offset, the cpu_start address, the dma_start address, and the size of the region. of_dma_configure() is the typical manner to set range offsets but there are a number of ad hoc assignments to "dev->dma_pfn_offset" in the kernel driver code. These cases now invoke the function dma_direct_set_offset(dev, cpu_addr, dma_addr, size). Signed-off-by: Jim Quinlan <james.quinlan@broadcom.com> [hch: various interface cleanups] Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org> Tested-by: Nathan Chancellor <natechancellor@gmail.com> |
||
|
Christoph Hellwig
|
3799e402a4 |
ARM/dma-mapping: move various helpers from dma-mapping.h to dma-direct.h
Move the helpers to translate to and from direct mapping DMA addresses to dma-direct.h. This not only is the most logical place, but the new placement also avoids dependency loops with pending commits. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Robin Murphy <robin.murphy@arm.com> |
||
|
Christoph Hellwig
|
002a26fb55 |
ARM/dma-mapping: remove dma_to_virt
dma_to_virt is entirely unused, remove it. Signed-off-by: Christoph Hellwig <hch@lst.de> |
||
|
Christoph Hellwig
|
f982438e82 |
ARM/dma-mapping: remove a __arch_page_to_dma #error
The __arch_page_to_dma hook is long gone. Signed-off-by: Christoph Hellwig <hch@lst.de> |
||
Marc Zyngier
|
5ebf353af2 |
ARM: Remove custom IRQ stat accounting
Let's switch the arm code to the core accounting, which already does everything we need. Reviewed-by: Valentin Schneider <valentin.schneider@arm.com> Signed-off-by: Marc Zyngier <maz@kernel.org> |
||
|
Marc Zyngier
|
8aa837cb7a |
ARM: Kill __smp_cross_call and co
The old IPI registration interface is now unused on arm, so let's get rid of it. Reviewed-by: Valentin Schneider <valentin.schneider@arm.com> Signed-off-by: Marc Zyngier <maz@kernel.org> |
||
Ard Biesheuvel
|
6208857b8f |
efi/libstub: arm32: Base FDT and initrd placement on image address
The way we use the base of DRAM in the EFI stub is problematic as it is ill defined what the base of DRAM actually means. There are some restrictions on the placement of FDT and initrd which are defined in terms of dram_base, but given that the placement of the kernel in memory is what defines these boundaries (as on ARM, this is where the linear region starts), it is better to use the image address in these cases, and disregard dram_base altogether. Reviewed-by: Maxim Uvarov <maxim.uvarov@linaro.org> Tested-by: Maxim Uvarov <maxim.uvarov@linaro.org> Signed-off-by: Ard Biesheuvel <ardb@kernel.org> |
||
|
Marc Zyngier
|
56afcd3dbd |
ARM: Allow IPIs to be handled as normal interrupts
In order to deal with IPIs as normal interrupts, let's add a new way to register them with the architecture code. set_smp_ipi_range() takes a range of interrupts, and allows the arch code to request them as if the were normal interrupts. A standard handler is then called by the core IRQ code to deal with the IPI. This means that we don't need to call irq_enter/irq_exit, and that we don't need to deal with set_irq_regs either. So let's move the dispatcher into its own function, and leave handle_IPI() as a compatibility function. On the sending side, let's make use of ipi_send_mask, which already exists for this purpose. One of the major difference is that we end up, in some cases (such as when performing IRQ time accounting on the scheduler IPI), end up with nested irq_enter()/irq_exit() pairs. Other than the (relatively small) overhead, there should be no consequences to it (these pairs are designed to nest correctly, and the accounting shouldn't be off). Reviewed-by: Valentin Schneider <valentin.schneider@arm.com> Signed-off-by: Marc Zyngier <maz@kernel.org> |
||
|
Christoph Hellwig
|
5ceda74093 |
dma-direct: rename and cleanup __phys_to_dma
The __phys_to_dma vs phys_to_dma distinction isn't exactly obvious. Try to improve the situation by renaming __phys_to_dma to phys_to_dma_unencryped, and not forcing architectures that want to override phys_to_dma to actually provide __phys_to_dma. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Robin Murphy <robin.murphy@arm.com> |
||
|
Christoph Hellwig
|
7bc5c428a6 |
dma-direct: remove __dma_to_phys
There is no harm in just always clearing the SME encryption bit, while significantly simplifying the interface. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Robin Murphy <robin.murphy@arm.com> |
||
Kees Cook
|
0c918e753f |
arm/build: Assert for unwanted sections
In preparation for warning on orphan sections, enforce expected-to-be-zero-sized sections (since discarding them might hide problems with them suddenly gaining unexpected entries). Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Russell King <linux@armlinux.org.uk> Link: https://lore.kernel.org/r/20200821194310.3089815-19-keescook@chromium.org |
||
|
Kees Cook
|
512dd2eebe |
arm/build: Add missing sections
Add missing text stub sections .vfp11_veneer and .v4_bx, as well as missing DWARF sections, when present in the build. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Cc: Russell King <linux@armlinux.org.uk> Link: https://lore.kernel.org/r/20200821194310.3089815-18-keescook@chromium.org |
||
|
Kees Cook
|
3b14aefb84 |
arm/build: Explicitly keep .ARM.attributes sections
In preparation for adding --orphan-handling=warn, explicitly keep the .ARM.attributes section (at address 0[1]) by expanding the existing ELF_DETAILS macro into ARM_DETAILS. [1] https://reviews.llvm.org/D85867 Suggested-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Fangrui Song <maskray@google.com> Cc: Russell King <linux@armlinux.org.uk> Link: https://lore.kernel.org/lkml/CAKwvOdk-racgq5pxsoGS6Vtifbtrk5fmkmnoLxrQMaOvV0nPWw@mail.gmail.com/ Link: https://lore.kernel.org/r/20200821194310.3089815-17-keescook@chromium.org |
||
|
Kees Cook
|
d7e3b065dc |
arm/build: Refactor linker script headers
In preparation for adding --orphan-handling=warn, refactor the linker script header includes, and extract common macros. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Russell King <linux@armlinux.org.uk> Link: https://lore.kernel.org/r/20200821194310.3089815-16-keescook@chromium.org |
||
Al Viro
|
1d60be3c25 |
arm: propagate the calling convention changes down to csum_partial_copy_from_user()
... and get rid of the "clean the destination on error" crap. Simplifies the fault handlers and the function itself... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> |
||
|
Al Viro
|
c693cc4676 |
saner calling conventions for csum_and_copy_..._user()
All callers of these primitives will * discard anything we might've copied in case of error * ignore the csum value in case of error * always pass 0xffffffff as the initial sum, so the resulting csum value (in case of success, that is) will never be 0. That suggest the following calling conventions: * don't pass err_ptr - just return 0 on error. * don't bother with zeroing destination, etc. in case of error * don't pass the initial sum - just use 0xffffffff. This commit does the minimal conversion in the instances of csum_and_copy_...(); the changes of actual asm code behind them are done later in the series. Note that this asm code is often shared with csum_partial_copy_nocheck(); the difference is that csum_partial_copy_nocheck() passes 0 for initial sum while csum_and_copy_..._user() pass 0xffffffff. Fortunately, we are free to pass 0xffffffff in all cases and subsequent patches will use that freedom without any special comments. A part that could be split off: parisc and uml/i386 claimed to have csum_and_copy_to_user() instances of their own, but those were identical to the generic one, so we simply drop them. Not sure if it's worth a separate commit... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> |
||
|
Al Viro
|
cc44c17baf |
csum_partial_copy_nocheck(): drop the last argument
It's always 0. Note that we theoretically could use ~0U as well - result will be the same modulo 0xffff, _if_ the damn thing did the right thing for any value of initial sum; later we'll make use of that when convenient. However, unlike csum_and_copy_..._user(), there are instances that did not work for arbitrary initial sums; c6x is one such. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> |
||
|
Al Viro
|
6e41c585e3 |
unify generic instances of csum_partial_copy_nocheck()
quite a few architectures have the same csum_partial_copy_nocheck() - simply memcpy() the data and then return the csum of the copy. hexagon, parisc, ia64, s390, um: explicitly spelled out that way. arc, arm64, csky, h8300, m68k/nommu, microblaze, mips/GENERIC_CSUM, nds32, nios2, openrisc, riscv, unicore32: end up picking the same thing spelled out in lib/checksum.h (with varying amounts of perversions along the way). everybody else (alpha, arm, c6x, m68k/mmu, mips/!GENERIC_CSUM, powerpc, sh, sparc, x86, xtensa) have non-generic variants. For all except c6x the declaration is in their asm/checksum.h. c6x uses the wrapper from asm-generic/checksum.h that would normally lead to the lib/checksum.h instance, but in case of c6x we end up using an asm function from arch/c6x instead. Screw that mess - have architectures with private instances define _HAVE_ARCH_CSUM_AND_COPY in their asm/checksum.h and have the default one right in net/checksum.h conditional on _HAVE_ARCH_CSUM_AND_COPY *not* defined. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> |
||
|
Linus Torvalds
|
b923f1247b |
A set oftimekeeping/VDSO updates:
- Preparatory work to allow S390 to switch over to the generic VDSO
implementation.
S390 requires that the VDSO data pointer is handed in to the counter
read function when time namespace support is enabled. Adding the pointer
is a NOOP for all other architectures because the compiler is supposed
to optimize that out when it is unused in the architecture specific
inline. The change also solved a similar problem for MIPS which
fortunately has time namespaces not yet enabled.
S390 needs to update clock related VDSO data independent of the
timekeeping updates. This was solved so far with yet another sequence
counter in the S390 implementation. A better solution is to utilize the
already existing VDSO sequence count for this. The core code now exposes
helper functions which allow to serialize against the timekeeper code
and against concurrent readers.
S390 needs extra data for their clock readout function. The initial
common VDSO data structure did not provide a way to add that. It now has
an embedded architecture specific struct embedded which defaults to an
empty struct.
Doing this now avoids tree dependencies and conflicts post rc1 and
allows all other architectures which work on generic VDSO support to
work from a common upstream base.
- A trivial comment fix.
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Merge tag 'timers-urgent-2020-08-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timekeeping updates from Thomas Gleixner:
"A set of timekeeping/VDSO updates:
- Preparatory work to allow S390 to switch over to the generic VDSO
implementation.
S390 requires that the VDSO data pointer is handed in to the
counter read function when time namespace support is enabled.
Adding the pointer is a NOOP for all other architectures because
the compiler is supposed to optimize that out when it is unused in
the architecture specific inline. The change also solved a similar
problem for MIPS which fortunately has time namespaces not yet
enabled.
S390 needs to update clock related VDSO data independent of the
timekeeping updates. This was solved so far with yet another
sequence counter in the S390 implementation. A better solution is
to utilize the already existing VDSO sequence count for this. The
core code now exposes helper functions which allow to serialize
against the timekeeper code and against concurrent readers.
S390 needs extra data for their clock readout function. The initial
common VDSO data structure did not provide a way to add that. It
now has an embedded architecture specific struct embedded which
defaults to an empty struct.
Doing this now avoids tree dependencies and conflicts post rc1 and
allows all other architectures which work on generic VDSO support
to work from a common upstream base.
- A trivial comment fix"
* tag 'timers-urgent-2020-08-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
time: Delete repeated words in comments
lib/vdso: Allow to add architecture-specific vdso data
timekeeping/vsyscall: Provide vdso_update_begin/end()
vdso/treewide: Add vdso_data pointer argument to __arch_get_hw_counter()
|
||
|
Linus Torvalds
|
9ad57f6dfc |
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton: - most of the rest of MM (memcg, hugetlb, vmscan, proc, compaction, mempolicy, oom-kill, hugetlbfs, migration, thp, cma, util, memory-hotplug, cleanups, uaccess, migration, gup, pagemap), - various other subsystems (alpha, misc, sparse, bitmap, lib, bitops, checkpatch, autofs, minix, nilfs, ufs, fat, signals, kmod, coredump, exec, kdump, rapidio, panic, kcov, kgdb, ipc). * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (164 commits) mm/gup: remove task_struct pointer for all gup code mm: clean up the last pieces of page fault accountings mm/xtensa: use general page fault accounting mm/x86: use general page fault accounting mm/sparc64: use general page fault accounting mm/sparc32: use general page fault accounting mm/sh: use general page fault accounting mm/s390: use general page fault accounting mm/riscv: use general page fault accounting mm/powerpc: use general page fault accounting mm/parisc: use general page fault accounting mm/openrisc: use general page fault accounting mm/nios2: use general page fault accounting mm/nds32: use general page fault accounting mm/mips: use general page fault accounting mm/microblaze: use general page fault accounting mm/m68k: use general page fault accounting mm/ia64: use general page fault accounting mm/hexagon: use general page fault accounting mm/csky: use general page fault accounting ... |
||
|
Christoph Hellwig
|
428e2976a5 |
uaccess: remove segment_eq
segment_eq is only used to implement uaccess_kernel. Just open code uaccess_kernel in the arch uaccess headers and remove one layer of indirection. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Acked-by: Greentime Hu <green.hu@gmail.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Nick Hu <nickhu@andestech.com> Cc: Vincent Chen <deanbo422@gmail.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Link: http://lkml.kernel.org/r/20200710135706.537715-5-hch@lst.de Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Linus Torvalds
|
952ace797c |
IOMMU Updates for Linux v5.9
Including:
- Removal of the dev->archdata.iommu (or similar) pointers from
most architectures. Only Sparc is left, but this is private to
Sparc as their drivers don't use the IOMMU-API.
- ARM-SMMU Updates from Will Deacon:
- Support for SMMU-500 implementation in Marvell
Armada-AP806 SoC
- Support for SMMU-500 implementation in NVIDIA Tegra194 SoC
- DT compatible string updates
- Remove unused IOMMU_SYS_CACHE_ONLY flag
- Move ARM-SMMU drivers into their own subdirectory
- Intel VT-d Updates from Lu Baolu:
- Misc tweaks and fixes for vSVA
- Report/response page request events
- Cleanups
- Move the Kconfig and Makefile bits for the AMD and Intel
drivers into their respective subdirectory.
- MT6779 IOMMU Support
- Support for new chipsets in the Renesas IOMMU driver
- Other misc cleanups and fixes (e.g. to improve compile test
coverage)
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Merge tag 'iommu-updates-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu updates from Joerg Roedel:
- Remove of the dev->archdata.iommu (or similar) pointers from most
architectures. Only Sparc is left, but this is private to Sparc as
their drivers don't use the IOMMU-API.
- ARM-SMMU updates from Will Deacon:
- Support for SMMU-500 implementation in Marvell Armada-AP806 SoC
- Support for SMMU-500 implementation in NVIDIA Tegra194 SoC
- DT compatible string updates
- Remove unused IOMMU_SYS_CACHE_ONLY flag
- Move ARM-SMMU drivers into their own subdirectory
- Intel VT-d updates from Lu Baolu:
- Misc tweaks and fixes for vSVA
- Report/response page request events
- Cleanups
- Move the Kconfig and Makefile bits for the AMD and Intel drivers into
their respective subdirectory.
- MT6779 IOMMU Support
- Support for new chipsets in the Renesas IOMMU driver
- Other misc cleanups and fixes (e.g. to improve compile test coverage)
* tag 'iommu-updates-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (77 commits)
iommu/amd: Move Kconfig and Makefile bits down into amd directory
iommu/vt-d: Move Kconfig and Makefile bits down into intel directory
iommu/arm-smmu: Move Arm SMMU drivers into their own subdirectory
iommu/vt-d: Skip TE disabling on quirky gfx dedicated iommu
iommu: Add gfp parameter to io_pgtable_ops->map()
iommu: Mark __iommu_map_sg() as static
iommu/vt-d: Rename intel-pasid.h to pasid.h
iommu/vt-d: Add page response ops support
iommu/vt-d: Report page request faults for guest SVA
iommu/vt-d: Add a helper to get svm and sdev for pasid
iommu/vt-d: Refactor device_to_iommu() helper
iommu/vt-d: Disable multiple GPASID-dev bind
iommu/vt-d: Warn on out-of-range invalidation address
iommu/vt-d: Fix devTLB flush for vSVA
iommu/vt-d: Handle non-page aligned address
iommu/vt-d: Fix PASID devTLB invalidation
iommu/vt-d: Remove global page support in devTLB flush
iommu/vt-d: Enforce PASID devTLB field mask
iommu: Make some functions static
iommu/amd: Remove double zero check
...
|
||
Mike Rapoport
|
f9cb654cb5 |
asm-generic: pgalloc: provide generic pgd_free()
Most architectures define pgd_free() as a wrapper for free_page(). Provide a generic version in asm-generic/pgalloc.h and enable its use for most architectures. Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Pekka Enberg <penberg@kernel.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k] Cc: Abdul Haleem <abdhalee@linux.vnet.ibm.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Joerg Roedel <joro@8bytes.org> Cc: Joerg Roedel <jroedel@suse.de> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com> Cc: Stafford Horne <shorne@gmail.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Matthew Wilcox <willy@infradead.org> Link: http://lkml.kernel.org/r/20200627143453.31835-7-rppt@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Mike Rapoport
|
1355c31eeb |
asm-generic: pgalloc: provide generic pmd_alloc_one() and pmd_free_one()
For most architectures that support >2 levels of page tables, pmd_alloc_one() is a wrapper for __get_free_pages(), sometimes with __GFP_ZERO and sometimes followed by memset(0) instead. More elaborate versions on arm64 and x86 account memory for the user page tables and call to pgtable_pmd_page_ctor() as the part of PMD page initialization. Move the arm64 version to include/asm-generic/pgalloc.h and use the generic version on several architectures. The pgtable_pmd_page_ctor() is a NOP when ARCH_ENABLE_SPLIT_PMD_PTLOCK is not enabled, so there is no functional change for most architectures except of the addition of __GFP_ACCOUNT for allocation of user page tables. The pmd_free() is a wrapper for free_page() in all the cases, so no functional change here. Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Pekka Enberg <penberg@kernel.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Abdul Haleem <abdhalee@linux.vnet.ibm.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Joerg Roedel <joro@8bytes.org> Cc: Joerg Roedel <jroedel@suse.de> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com> Cc: Stafford Horne <shorne@gmail.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Link: http://lkml.kernel.org/r/20200627143453.31835-5-rppt@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Mike Rapoport
|
ca15ca406f |
mm: remove unneeded includes of <asm/pgalloc.h>
Patch series "mm: cleanup usage of <asm/pgalloc.h>"
Most architectures have very similar versions of pXd_alloc_one() and
pXd_free_one() for intermediate levels of page table. These patches add
generic versions of these functions in <asm-generic/pgalloc.h> and enable
use of the generic functions where appropriate.
In addition, functions declared and defined in <asm/pgalloc.h> headers are
used mostly by core mm and early mm initialization in arch and there is no
actual reason to have the <asm/pgalloc.h> included all over the place.
The first patch in this series removes unneeded includes of
<asm/pgalloc.h>
In the end it didn't work out as neatly as I hoped and moving
pXd_alloc_track() definitions to <asm-generic/pgalloc.h> would require
unnecessary changes to arches that have custom page table allocations, so
I've decided to move lib/ioremap.c to mm/ and make pgalloc-track.h local
to mm/.
This patch (of 8):
In most cases <asm/pgalloc.h> header is required only for allocations of
page table memory. Most of the .c files that include that header do not
use symbols declared in <asm/pgalloc.h> and do not require that header.
As for the other header files that used to include <asm/pgalloc.h>, it is
possible to move that include into the .c file that actually uses symbols
from <asm/pgalloc.h> and drop the include from the header file.
The process was somewhat automated using
sed -i -E '/[<"]asm\/pgalloc\.h/d' \
$(grep -L -w -f /tmp/xx \
$(git grep -E -l '[<"]asm/pgalloc\.h'))
where /tmp/xx contains all the symbols defined in
arch/*/include/asm/pgalloc.h.
[rppt@linux.ibm.com: fix powerpc warning]
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Pekka Enberg <penberg@kernel.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k]
Cc: Abdul Haleem <abdhalee@linux.vnet.ibm.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Matthew Wilcox <willy@infradead.org>
Link: http://lkml.kernel.org/r/20200627143453.31835-1-rppt@kernel.org
Link: http://lkml.kernel.org/r/20200627143453.31835-2-rppt@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
||
|
Linus Torvalds
|
40ddad1913 |
ARM development for 5.9-rc1:
- add arch/arm/Kbuild from Masahiro Yamada. - simplify act_mm macro, since it contains an open-coded get_thread_info. - VFP updates for Clang from Stefan Agner. - Fix unwinder for Clang from Nathan Huckleberry. - Remove unused it8152 PCI host controller, used by the removed cm-x2xx platforms from Mike Rapoport. - Further explanation of __range_ok(). - Remove kimage_voffset that isn't used anymore from Marc Zyngier. - Drop ancient Thumb-2 workaround for old binutils from Ard Biesheuvel. - Documentation cleanup for mach-* from Pete Zaitcev. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEuNNh8scc2k/wOAE+9OeQG+StrGQFAl8sOXMACgkQ9OeQG+St rGRFCBAAlBOdZmiB4/UW59LEdBRhNg4C0HNQmOxQqp6oMZLw9Whu3SDHeBePVvqA gp8z3rJL6N6XhSmv0dplWxgX2FrBfscjlwa7wLcwtz1NCTeGT1xL6s2dwH2q8Ocw swfcFhdFiJ+ewtylfYqogGPQyFXOPnTGv7B/cH+IX1kP0OcpgDb+pDy24MrrrD4r 6DC8fIkZtDcvABJGSEthiMx29Pn1jbGAZWW3acVDtnMgppzB6brMH/A1HirMo0G9 qGxejqJ+/DgsQciRBxfSI2N4U42XRVacW1vGdN19tFWYhHNStx9PnV9JHo61sQFM UiI1fARat8dlY8qT72binE1gbDZ4HOLJ5181BjDEchoO/qnxxi0tOlOlFO6PB0fz innRDC5TGLjBb/9B5YkHLSoDDo0erovJUV1m1pz/T9Dd6rO+1BV6Q2GI312dxLVR IfRJ8PVI9WZaYjZgxp14m1l0tRNI0BJoRT6QjADwAxo5leRFho6KbsfAgNCm8/ni lfqo3kHrLnd3pojljiuvW8/oBdqYTA86VAlfzyJ/rFOHMlROeFGCoCDqsBeqR1gZ pX3zQU5Jf8pJXsXaM1hXO/CcK61Nr4/m18uyjLpJeyYNJWz3CZ/hndhLJR91cShT hTP1bB/UQlprOP6CgjTPj1MCCA9HCRCo8k5y/s9VKpMZ8SM9Ghw= =RWzO -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm Pull ARM updates from Russell King: - add arch/arm/Kbuild from Masahiro Yamada. - simplify act_mm macro, since it contains an open-coded get_thread_info. - VFP updates for Clang from Stefan Agner. - Fix unwinder for Clang from Nathan Huckleberry. - Remove unused it8152 PCI host controller, used by the removed cm-x2xx platforms from Mike Rapoport. - Further explanation of __range_ok(). - Remove kimage_voffset that isn't used anymore from Marc Zyngier. - Drop ancient Thumb-2 workaround for old binutils from Ard Biesheuvel. - Documentation cleanup for mach-* from Pete Zaitcev. * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 8996/1: Documentation/Clean up the description of mach-<class> ARM: 8995/1: drop Thumb-2 workaround for ancient binutils ARM: 8994/1: mm: drop kimage_voffset which was only used by KVM ARM: uaccess: add further explanation of __range_ok() ARM: 8993/1: remove it8152 PCI controller driver ARM: 8992/1: Fix unwind_frame for clang-built kernels ARM: 8991/1: use VFP assembler mnemonics if available ARM: 8990/1: use VFP assembler mnemonics in register load/store macros ARM: 8989/1: use .fpu assembler directives instead of assembler arguments ARM: 8982/1: mm: Simplify act_mm macro ARM: 8981/1: add arch/arm/Kbuild |
||
Thomas Gleixner
|
4c5a116ada |
vdso/treewide: Add vdso_data pointer argument to __arch_get_hw_counter()
MIPS already uses and S390 will need the vdso data pointer in __arch_get_hw_counter(). This works nicely as long as the architecture does not support time namespaces in the VDSO. With time namespaces enabled the regular accessor to the vdso data pointer __arch_get_vdso_data() will return the namespace specific VDSO data page for tasks which are part of a non-root time namespace. This would cause the architectures which need the vdso data pointer in __arch_get_hw_counter() to access the wrong vdso data page. Add a vdso_data pointer argument to __arch_get_hw_counter() and hand it in from the call sites in the core code. For architectures which do not need the data pointer in their counter accessor function the compiler will just optimize it out. Fix up all existing architecture implementations and make MIPS utilize the pointer instead of invoking the accessor function. No functional change and no change in the resulting object code (except MIPS). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/draft-87wo2ekuzn.fsf@nanos.tec.linutronix.de |
||
|
Linus Torvalds
|
e4cbce4d13 |
The main changes in this cycle were:
- Improve uclamp performance by using a static key for the fast path
- Add the "sched_util_clamp_min_rt_default" sysctl, to optimize for
better power efficiency of RT tasks on battery powered devices.
(The default is to maximize performance & reduce RT latencies.)
- Improve utime and stime tracking accuracy, which had a fixed boundary
of error, which created larger and larger relative errors as the values
become larger. This is now replaced with more precise arithmetics,
using the new mul_u64_u64_div_u64() helper in math64.h.
- Improve the deadline scheduler, such as making it capacity aware
- Improve frequency-invariant scheduling
- Misc cleanups in energy/power aware scheduling
- Add sched_update_nr_running tracepoint to track changes to nr_running
- Documentation additions and updates
- Misc cleanups and smaller fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
- Improve uclamp performance by using a static key for the fast path
- Add the "sched_util_clamp_min_rt_default" sysctl, to optimize for
better power efficiency of RT tasks on battery powered devices.
(The default is to maximize performance & reduce RT latencies.)
- Improve utime and stime tracking accuracy, which had a fixed boundary
of error, which created larger and larger relative errors as the
values become larger. This is now replaced with more precise
arithmetics, using the new mul_u64_u64_div_u64() helper in math64.h.
- Improve the deadline scheduler, such as making it capacity aware
- Improve frequency-invariant scheduling
- Misc cleanups in energy/power aware scheduling
- Add sched_update_nr_running tracepoint to track changes to nr_running
- Documentation additions and updates
- Misc cleanups and smaller fixes
* tag 'sched-core-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits)
sched/doc: Factorize bits between sched-energy.rst & sched-capacity.rst
sched/doc: Document capacity aware scheduling
sched: Document arch_scale_*_capacity()
arm, arm64: Fix selection of CONFIG_SCHED_THERMAL_PRESSURE
Documentation/sysctl: Document uclamp sysctl knobs
sched/uclamp: Add a new sysctl to control RT default boost value
sched/uclamp: Fix a deadlock when enabling uclamp static key
sched: Remove duplicated tick_nohz_full_enabled() check
sched: Fix a typo in a comment
sched/uclamp: Remove unnecessary mutex_init()
arm, arm64: Select CONFIG_SCHED_THERMAL_PRESSURE
sched: Cleanup SCHED_THERMAL_PRESSURE kconfig entry
arch_topology, sched/core: Cleanup thermal pressure definition
trace/events/sched.h: fix duplicated word
linux/sched/mm.h: drop duplicated words in comments
smp: Fix a potential usage of stale nr_cpus
sched/fair: update_pick_idlest() Select group with lowest group_util when idle_cpus are equal
sched: nohz: stop passing around unused "ticks" parameter.
sched: Better document ttwu()
sched: Add a tracepoint to track rq->nr_running
...
|
||
|
Linus Torvalds
|
9ba19ccd2d |
These were the main changes in this cycle:
- LKMM updates: mostly documentation changes, but also some new litmus tests for atomic ops.
- KCSAN updates: the most important change is that GCC 11 now has all fixes in place
to support KCSAN, so GCC support can be enabled again. Also more annotations.
- futex updates: minor cleanups and simplifications
- seqlock updates: merge preparatory changes/cleanups for the 'associated locks' facilities.
- lockdep updates:
- simplify IRQ trace event handling
- add various new debug checks
- simplify header dependencies, split out <linux/lockdep_types.h>, decouple
lockdep from other low level headers some more
- fix NMI handling
- misc cleanups and smaller fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
- LKMM updates: mostly documentation changes, but also some new litmus
tests for atomic ops.
- KCSAN updates: the most important change is that GCC 11 now has all
fixes in place to support KCSAN, so GCC support can be enabled again.
Also more annotations.
- futex updates: minor cleanups and simplifications
- seqlock updates: merge preparatory changes/cleanups for the
'associated locks' facilities.
- lockdep updates:
- simplify IRQ trace event handling
- add various new debug checks
- simplify header dependencies, split out <linux/lockdep_types.h>,
decouple lockdep from other low level headers some more
- fix NMI handling
- misc cleanups and smaller fixes
* tag 'locking-core-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (60 commits)
kcsan: Improve IRQ state trace reporting
lockdep: Refactor IRQ trace events fields into struct
seqlock: lockdep assert non-preemptibility on seqcount_t write
lockdep: Add preemption enabled/disabled assertion APIs
seqlock: Implement raw_seqcount_begin() in terms of raw_read_seqcount()
seqlock: Add kernel-doc for seqcount_t and seqlock_t APIs
seqlock: Reorder seqcount_t and seqlock_t API definitions
seqlock: seqcount_t latch: End read sections with read_seqcount_retry()
seqlock: Properly format kernel-doc code samples
Documentation: locking: Describe seqlock design and usage
locking/qspinlock: Do not include atomic.h from qspinlock_types.h
locking/atomic: Move ATOMIC_INIT into linux/types.h
lockdep: Move list.h inclusion into lockdep.h
locking/lockdep: Fix TRACE_IRQFLAGS vs. NMIs
futex: Remove unused or redundant includes
futex: Consistently use fshared as boolean
futex: Remove needless goto's
futex: Remove put_futex_key()
rwsem: fix commas in initialisation
docs: locking: Replace HTTP links with HTTPS ones
...
|
||
|
Linus Torvalds
|
145ff1ec09 |
arm64 and cross-arch updates for 5.9:
- Removal of the tremendously unpopular read_barrier_depends() barrier,
which is a NOP on all architectures apart from Alpha, in favour of
allowing architectures to override READ_ONCE() and do whatever dance
they need to do to ensure address dependencies provide LOAD ->
LOAD/STORE ordering. This work also offers a potential solution if
compilers are shown to convert LOAD -> LOAD address dependencies into
control dependencies (e.g. under LTO), as weakly ordered architectures
will effectively be able to upgrade READ_ONCE() to smp_load_acquire().
The latter case is not used yet, but will be discussed further at LPC.
- Make the MSI/IOMMU input/output ID translation PCI agnostic, augment
the MSI/IOMMU ACPI/OF ID mapping APIs to accept an input ID
bus-specific parameter and apply the resulting changes to the device
ID space provided by the Freescale FSL bus.
- arm64 support for TLBI range operations and translation table level
hints (part of the ARMv8.4 architecture version).
- Time namespace support for arm64.
- Export the virtual and physical address sizes in vmcoreinfo for
makedumpfile and crash utilities.
- CPU feature handling cleanups and checks for programmer errors
(overlapping bit-fields).
- ACPI updates for arm64: disallow AML accesses to EFI code regions and
kernel memory.
- perf updates for arm64.
- Miscellaneous fixes and cleanups, most notably PLT counting
optimisation for module loading, recordmcount fix to ignore
relocations other than R_AARCH64_CALL26, CMA areas reserved for
gigantic pages on 16K and 64K configurations.
- Trivial typos, duplicate words.
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 and cross-arch updates from Catalin Marinas:
"Here's a slightly wider-spread set of updates for 5.9.
Going outside the usual arch/arm64/ area is the removal of
read_barrier_depends() series from Will and the MSI/IOMMU ID
translation series from Lorenzo.
The notable arm64 updates include ARMv8.4 TLBI range operations and
translation level hint, time namespace support, and perf.
Summary:
- Removal of the tremendously unpopular read_barrier_depends()
barrier, which is a NOP on all architectures apart from Alpha, in
favour of allowing architectures to override READ_ONCE() and do
whatever dance they need to do to ensure address dependencies
provide LOAD -> LOAD/STORE ordering.
This work also offers a potential solution if compilers are shown
to convert LOAD -> LOAD address dependencies into control
dependencies (e.g. under LTO), as weakly ordered architectures will
effectively be able to upgrade READ_ONCE() to smp_load_acquire().
The latter case is not used yet, but will be discussed further at
LPC.
- Make the MSI/IOMMU input/output ID translation PCI agnostic,
augment the MSI/IOMMU ACPI/OF ID mapping APIs to accept an input ID
bus-specific parameter and apply the resulting changes to the
device ID space provided by the Freescale FSL bus.
- arm64 support for TLBI range operations and translation table level
hints (part of the ARMv8.4 architecture version).
- Time namespace support for arm64.
- Export the virtual and physical address sizes in vmcoreinfo for
makedumpfile and crash utilities.
- CPU feature handling cleanups and checks for programmer errors
(overlapping bit-fields).
- ACPI updates for arm64: disallow AML accesses to EFI code regions
and kernel memory.
- perf updates for arm64.
- Miscellaneous fixes and cleanups, most notably PLT counting
optimisation for module loading, recordmcount fix to ignore
relocations other than R_AARCH64_CALL26, CMA areas reserved for
gigantic pages on 16K and 64K configurations.
- Trivial typos, duplicate words"
Link: http://lkml.kernel.org/r/20200710165203.31284-1-will@kernel.org
Link: http://lkml.kernel.org/r/20200619082013.13661-1-lorenzo.pieralisi@arm.com
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (82 commits)
arm64: use IRQ_STACK_SIZE instead of THREAD_SIZE for irq stack
arm64/mm: save memory access in check_and_switch_context() fast switch path
arm64: sigcontext.h: delete duplicated word
arm64: ptrace.h: delete duplicated word
arm64: pgtable-hwdef.h: delete duplicated words
bus: fsl-mc: Add ACPI support for fsl-mc
bus/fsl-mc: Refactor the MSI domain creation in the DPRC driver
of/irq: Make of_msi_map_rid() PCI bus agnostic
of/irq: make of_msi_map_get_device_domain() bus agnostic
dt-bindings: arm: fsl: Add msi-map device-tree binding for fsl-mc bus
of/device: Add input id to of_dma_configure()
of/iommu: Make of_map_rid() PCI agnostic
ACPI/IORT: Add an input ID to acpi_dma_configure()
ACPI/IORT: Remove useless PCI bus walk
ACPI/IORT: Make iort_msi_map_rid() PCI agnostic
ACPI/IORT: Make iort_get_device_domain IRQ domain agnostic
ACPI/IORT: Make iort_match_node_callback walk the ACPI namespace for NC
arm64: enable time namespace support
arm64/vdso: Restrict splitting VVAR VMA
arm64/vdso: Handle faults on timens page
...
|
||
Grygorii Strashko
|
aa54ea903a |
ARM: percpu.h: fix build error
Fix build error for the case:
defined(CONFIG_SMP) && !defined(CONFIG_CPU_V6)
config: keystone_defconfig
CC arch/arm/kernel/signal.o
In file included from ../include/linux/random.h:14,
from ../arch/arm/kernel/signal.c:8:
../arch/arm/include/asm/percpu.h: In function ‘__my_cpu_offset’:
../arch/arm/include/asm/percpu.h:29:34: error: ‘current_stack_pointer’ undeclared (first use in this function); did you mean ‘user_stack_pointer’?
: "Q" (*(const unsigned long *)current_stack_pointer));
^~~~~~~~~~~~~~~~~~~~~
user_stack_pointer
Fixes:
|