- 17 May, 2022 1 commit
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Yang Yingliang authored
Clock source is prepared and enabled by clk_prepare_enable() in probe function, but not disabled or unprepared in remove function. Signed-off-by:
Yang Yingliang <yangyingliang@huawei.com> Signed-off-by:
Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20220516092911.953066-1-yangyingliang@huawei.com
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- 16 May, 2022 4 commits
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Mikhail Zhilkin authored
Extend fixed-partitions binding for support of Sercomm partition parser (add "sercomm,sc-partitions" compatible). Signed-off-by:
Mikhail Zhilkin <csharper2005@gmail.com> Reviewed-by:
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by:
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Mikhail Zhilkin authored
Add "sercomm" vendor prefix for "Sercomm (Suzhou) Corporation". Company website: Link: https://www.sercomm.com/Signed-off-by:
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Vincent Whitchurch authored
Currently phram always uses ioremap(), but this is unnecessary when normal memory is used. If the reserved-memory node does not specify the no-map property, indicating it should be mapped as system RAM and ioremap() cannot be used on it, use a cached mapping using memremap(MEMREMAP_WB) instead. On one of my systems this improves read performance by ~70%. (Note that this driver has always used normal memcpy/memset functions on memory obtained from ioremap(), which sparse doesn't like. There is no memremap() variant which maps exactly to ioremap() on all architectures, so that behaviour of the driver is not changed to avoid affecting existing users, but the sparse warnings are suppressed in the moved code with __force.) Signed-off-by:
Vincent Whitchurch <vincent.whitchurch@axis.com> Signed-off-by:
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Rafał Miłecki authored
Until this change MTD subsystem supported handling partitions only with MTD partitions parsers. That's a specific / limited API designed around partitions. Some MTD partitions may however require different handling. They may contain specific data that needs to be parsed and somehow extracted. For that purpose MTD subsystem should allow binding of standard platform drivers. An example can be U-Boot (sub)partition with environment variables. There exist a "u-boot,env" DT binding for MTD (sub)partition that requires an NVMEM driver. Ref: 5db1c2db ("dt-bindings: nvmem: add U-Boot environment variables binding") Signed-off-by:
Rafał Miłecki <rafal@milecki.pl> Signed-off-by:
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- 28 Apr, 2022 4 commits
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Tokunori Ikegami authored
Signed-off-by:
Tokunori Ikegami <ikegami.t@gmail.com> Acked-by:
Vignesh Raghavendra <vigneshr@ti.com> Signed-off-by:
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Tokunori Ikegami authored
It is for the model number 01, 02, V1 and V2. Signed-off-by:
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Tokunori Ikegami authored
Since commit dfeae107("mtd: cfi_cmdset_0002: Change write buffer to check correct value") buffered writes fail on S29GL064N. This is because, on S29GL064N, reads return 0xFF at the end of DQ polling for write completion, where as, chip_good() check expects actual data written to the last location to be returned post DQ polling completion. Fix is to revert to using chip_good() for S29GL064N which only checks for DQ lines to settle down to determine write completion. Link: https://lore.kernel.org/r/b687c259-6413-26c9-d4c9-b3afa69ea124@pengutronix.de/ Fixes: dfeae107("mtd: cfi_cmdset_0002: Change write buffer to check correct value") Cc: stable@vger.kernel.org Signed-off-by:
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Tokunori Ikegami authored
This is a preparation patch for the S29GL064N buffer writes fix. There is no functional change. Link: https://lore.kernel.org/r/b687c259-6413-26c9-d4c9-b3afa69ea124@pengutronix.de/ Fixes: dfeae107("mtd: cfi_cmdset_0002: Change write buffer to check correct value") Signed-off-by:
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- 26 Apr, 2022 3 commits
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Jean-Marc Eurin authored
On some systems, the oops only has relative time from boot. Signed-off-by:
Jean-Marc Eurin <jmeurin@google.com> Signed-off-by:
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Jean-Marc Eurin authored
Create a dump header to enable the addition of fields without having to modify the rest of the code. Reported-by:
kernel test robot <lkp@intel.com> Signed-off-by:
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Jean-Marc Eurin authored
The read buffer size depends on the MTDOOPS_HEADER_SIZE. Tested: Changed the header size, it doesn't panic, header is still read/written correctly. Signed-off-by:
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- 25 Apr, 2022 6 commits
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Bjørn Mork authored
Warning on every translated mtd partition results in excessive log noise if this driver is loaded: nand: device found, Manufacturer ID: 0xc2, Chip ID: 0xf1 nand: Macronix MX30LF1G18AC nand: 128 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64 mt7621-nand 1e003000.nand: ECC strength adjusted to 4 bits read_bbt: found bbt at block 1023 10 fixed-partitions partitions found on MTD device mt7621-nand Creating 10 MTD partitions on "mt7621-nand": 0x000000000000-0x000000080000 : "Bootloader" mtdblock: MTD device 'Bootloader' is NAND, please consider using UBI block devices instead. 0x000000080000-0x000000100000 : "Config" mtdblock: MTD device 'Config' is NAND, please consider using UBI block devices instead. 0x000000100000-0x000000140000 : "Factory" mtdblock: MTD device 'Factory' is NAND, please consider using UBI block devices instead. 0x000000140000-0x000002000000 : "Kernel" mtdblock: MTD device 'Kernel' is NAND, please consider using UBI block devices instead. 0x000000540000-0x000002000000 : "ubi" mtdblock: MTD device 'ubi' is NAND, please consider using UBI block devices instead. 0x000002140000-0x000004000000 : "Kernel2" mtdblock: MTD device 'Kernel2' is NAND, please consider using UBI block devices instead. 0x000004000000-0x000004100000 : "wwan" mtdblock: MTD device 'wwan' is NAND, please consider using UBI block devices instead. 0x000004100000-0x000005100000 : "data" mtdblock: MTD device 'data' is NAND, please consider using UBI block devices instead. 0x000005100000-0x000005200000 : "rom-d" mtdblock: MTD device 'rom-d' is NAND, please consider using UBI block devices instead. 0x000005200000-0x000005280000 : "reserve" mtdblock: MTD device 'reserve' is NAND, please consider using UBI block devices instead. mtk_soc_eth 1e100000.ethernet eth0: mediatek frame engine at 0xbe100000, irq 21 This is more likely to annoy than to help users of embedded distros where this driver is enabled by default. Making the blockdevs available does not imply that they are in use, and warning about bootloader partitions or other devices which obviously never will be mounted is more confusing than helpful. Move the warning to open(), where it will be of more use - actually warning anyone who mounts a file system on NAND using mtdblock. Fixes: e07403a8 ("mtdblock: Warn if added for a NAND device") Signed-off-by:
Bjørn Mork <bjorn@mork.no> Reviewed-by:
Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Signed-off-by:
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Vincent Whitchurch authored
Allow phram to be probed from the devicetree. It expects to be in a reserved-memory node as documented by the bindings. This allows things like partitioning to be specified via the devicetree. Signed-off-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Vincent Whitchurch authored
Add bindings to allow MTD/block devices to be used in reserved-memory regions using the "phram" (MTD in PHysical RAM) driver. This allows things like partitioning to be specified via the existing devicetree bindings. Signed-off-by:
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Vincent Whitchurch authored
Allow the MTD index to be specified via a devicetree alias, so that the number does not just depend on probe order. This is useful to allow pseudo-devices like phram to be optionally used on systems, without having this affect the numbering of the real hardware MTD devices. Signed-off-by:
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Krzysztof Kozlowski authored
After conversion the jedec,spi-nor DT schema to reference other schemas (SPI and MTD) and use unevaluatedProperties, few properties are redundant. Signed-off-by:
Pratyush Yadav <p.yadav@ti.com> Reviewed-by:
Tudor Ambarus <tudor.ambarus@microchip.com> Signed-off-by:
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Linus Walleij authored
This custom maps driver was never used with the device tree enabled IXP4xx systems, which use the physmap add-on from commit 2aba2f2a ("mtd: physmap_of: add a hook for Intel IXP4xx flash probing") Since kernel v5.18-rc1 IXP4xx is only booting from the device tree so drop this old driver. Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
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- 04 Apr, 2022 1 commit
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Rafał Miłecki authored
mtd_read() gets called with offset + 0x8000 as argument so use the same value in pr_err(). Signed-off-by:
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- 03 Apr, 2022 8 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-traceLinus Torvalds authored
Pull more tracing updates from Steven Rostedt: - Rename the staging files to give them some meaning. Just stage1,stag2,etc, does not show what they are for - Check for NULL from allocation in bootconfig - Hold event mutex for dyn_event call in user events - Mark user events to broken (to work on the API) - Remove eBPF updates from user events - Remove user events from uapi header to keep it from being installed. - Move ftrace_graph_is_dead() into inline as it is called from hot paths and also convert it into a static branch. * tag 'trace-v5.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing: Move user_events.h temporarily out of include/uapi ftrace: Make ftrace_graph_is_dead() a static branch tracing: Set user_events to BROKEN tracing/user_events: Remove eBPF interfaces tracing/user_events: Hold event_mutex during dyn_event_add proc: bootconfig: Add null pointer check tracing: Rename the staging files for trace_events
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git://git.kernel.org/pub/scm/linux/kernel/git/clk/linuxLinus Torvalds authored
Pull clk fix from Stephen Boyd: "A single revert to fix a boot regression seen when clk_put() started dropping rate range requests. It's best to keep various systems booting so we'll kick this out and try again next time" * tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: Revert "clk: Drop the rate range on clk_put()"
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Thomas Gleixner: "A set of x86 fixes and updates: - Make the prctl() for enabling dynamic XSTATE components correct so it adds the newly requested feature to the permission bitmap instead of overwriting it. Add a selftest which validates that. - Unroll string MMIO for encrypted SEV guests as the hypervisor cannot emulate it. - Handle supervisor states correctly in the FPU/XSTATE code so it takes the feature set of the fpstate buffer into account. The feature sets can differ between host and guest buffers. Guest buffers do not contain supervisor states. So far this was not an issue, but with enabling PASID it needs to be handled in the buffer offset calculation and in the permission bitmaps. - Avoid a gazillion of repeated CPUID invocations in by caching the values early in the FPU/XSTATE code. - Enable CONFIG_WERROR in x86 defconfig. - Make the X86 defconfigs more useful by adapting them to Y2022 reality" * tag 'x86-urgent-2022-04-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/fpu/xstate: Consolidate size calculations x86/fpu/xstate: Handle supervisor states in XSTATE permissions x86/fpu/xsave: Handle compacted offsets correctly with supervisor states x86/fpu: Cache xfeature flags from CPUID x86/fpu/xsave: Initialize offset/size cache early x86/fpu: Remove unused supervisor only offsets x86/fpu: Remove redundant XCOMP_BV initialization x86/sev: Unroll string mmio with CC_ATTR_GUEST_UNROLL_STRING_IO x86/config: Make the x86 defconfigs a bit more usable x86/defconfig: Enable WERROR selftests/x86/amx: Update the ARCH_REQ_XCOMP_PERM test x86/fpu/xstate: Fix the ARCH_REQ_XCOMP_PERM implementation -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull RT signal fix from Thomas Gleixner: "Revert the RT related signal changes. They need to be reworked and generalized" * tag 'core-urgent-2022-04-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: Revert "signal, x86: Delay calling signals in atomic on RT enabled kernels"
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git://git.infradead.org/users/hch/dma-mappingLinus Torvalds authored
Pull more dma-mapping updates from Christoph Hellwig: - fix a regression in dma remap handling vs AMD memory encryption (me) - finally kill off the legacy PCI DMA API (Christophe JAILLET) * tag 'dma-mapping-5.18-1' of git://git.infradead.org/users/hch/dma-mapping: dma-mapping: move pgprot_decrypted out of dma_pgprot PCI/doc: cleanup references to the legacy PCI DMA API PCI: Remove the deprecated "pci-dma-compat.h" API
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git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds authored
Pull ARM fixes from Russell King: - avoid unnecessary rebuilds for library objects - fix return value of __setup handlers - fix invalid input check for "crashkernel=" kernel option - silence KASAN warnings in unwind_frame * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 9191/1: arm/stacktrace, kasan: Silence KASAN warnings in unwind_frame() ARM: 9190/1: kdump: add invalid input check for 'crashkernel=0' ARM: 9187/1: JIVE: fix return value of __setup handler ARM: 9189/1: decompressor: fix unneeded rebuilds of library objects
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Stephen Boyd authored
This reverts commit 7dabfa2b. There are multiple reports that this breaks boot on various systems. The common theme is that orphan clks are having rates set on them when that isn't expected. Let's revert it out for now so that -rc1 boots. Reported-by:
Marek Szyprowski <m.szyprowski@samsung.com> Reported-by:
Tony Lindgren <tony@atomide.com> Reported-by:
Alexander Stein <alexander.stein@ew.tq-group.com> Reported-by:
Naresh Kamboju <naresh.kamboju@linaro.org> Link: https://lore.kernel.org/r/366a0232-bb4a-c357-6aa8-636e398e05eb@samsung.com Cc: Maxime Ripard <maxime@cerno.tech> Signed-off-by:
Stephen Boyd <sboyd@kernel.org> Link: https://lore.kernel.org/r/20220403022818.39572-1-sboyd@kernel.org
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- 02 Apr, 2022 13 commits
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Linus Torvalds authored
Merge tag 'perf-tools-for-v5.18-2022-04-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux Pull more perf tools updates from Arnaldo Carvalho de Melo: - Avoid SEGV if core.cpus isn't set in 'perf stat'. - Stop depending on .git files for building PERF-VERSION-FILE, used in 'perf --version', fixing some perf tools build scenarios. - Convert tracepoint.py example to python3. - Update UAPI header copies from the kernel sources: socket, mman-common, msr-index, KVM, i915 and cpufeatures. - Update copy of libbpf's hashmap.c. - Directly return instead of using local ret variable in evlist__create_syswide_maps(), found by coccinelle. * tag 'perf-tools-for-v5.18-2022-04-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: perf python: Convert tracepoint.py example to python3 perf evlist: Directly return instead of using local ret variable perf cpumap: More cpu map reuse by merge. perf cpumap: Add is_subset function perf evlist: Rename cpus to user_requested_cpus perf tools: Stop depending on .git files for building PERF-VERSION-FILE tools headers cpufeatures: Sync with the kernel sources tools headers UAPI: Sync drm/i915_drm.h with the kernel sources tools headers UAPI: Sync linux/kvm.h with the kernel sources tools kvm headers arm64: Update KVM headers from the kernel sources tools arch x86: Sync the msr-index.h copy with the kernel sources tools headers UAPI: Sync asm-generic/mman-common.h with the kernel perf beauty: Update copy of linux/socket.h with the kernel sources perf tools: Update copy of libbpf's hashmap.c perf stat: Avoid SEGV if core.cpus isn't set
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Linus Torvalds authored
Merge tag 'kbuild-fixes-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - Fix empty $(PYTHON) expansion. - Fix UML, which got broken by the attempt to suppress Clang warnings. - Fix warning message in modpost. * tag 'kbuild-fixes-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: modpost: restore the warning message for missing symbol versions Revert "um: clang: Strip out -mno-global-merge from USER_CFLAGS" kbuild: Remove '-mno-global-merge' kbuild: fix empty ${PYTHON} in scripts/link-vmlinux.sh kconfig: remove stale comment about removed kconfig_print_symbol()
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git://git.kernel.org/pub/scm/linux/kernel/git/mips/linuxLinus Torvalds authored
Pull MIPS fixes from Thomas Bogendoerfer: - build fix for gpio - fix crc32 build problems - check for failed memory allocations * tag 'mips_5.18_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: MIPS: crypto: Fix CRC32 code MIPS: rb532: move GPIOD definition into C-files MIPS: lantiq: check the return value of kzalloc() mips: sgi-ip22: add a check for the return of kzalloc()
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull kvm fixes from Paolo Bonzini: - Only do MSR filtering for MSRs accessed by rdmsr/wrmsr - Documentation improvements - Prevent module exit until all VMs are freed - PMU Virtualization fixes - Fix for kvm_irq_delivery_to_apic_fast() NULL-pointer dereferences - Other miscellaneous bugfixes * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (42 commits) KVM: x86: fix sending PV IPI KVM: x86/mmu: do compare-and-exchange of gPTE via the user address KVM: x86: Remove redundant vm_entry_controls_clearbit() call KVM: x86: cleanup enter_rmode() KVM: x86: SVM: fix tsc scaling when the host doesn't support it kvm: x86: SVM: remove unused defines KVM: x86: SVM: move tsc ratio definitions to svm.h KVM: x86: SVM: fix avic spec based definitions again KVM: MIPS: remove reference to trap&emulate virtualization KVM: x86: document limitations of MSR filtering KVM: x86: Only do MSR filtering when access MSR by rdmsr/wrmsr KVM: x86/emulator: Emulate RDPID only if it is enabled in guest KVM: x86/pmu: Fix and isolate TSX-specific performance event logic KVM: x86: mmu: trace kvm_mmu_set_spte after the new SPTE was set KVM: x86/svm: Clear reserved bits written to PerfEvtSeln MSRs KVM: x86: Trace all APICv inhibit changes and capture overall status KVM: x86: Add wrappers for setting/clearing APICv inhibits KVM: x86: Make APICv inhibit reasons an enum and cleanup naming KVM: X86: Handle implicit supervisor access with SMAP KVM: X86: Rename variable smap to not_smap in permission_fault() ...
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Masahiro Yamada authored
This log message was accidentally chopped off. I was wondering why this happened, but checking the ML log, Mark precisely followed my suggestion [1]. I just used "..." because I was too lazy to type the sentence fully. Sorry for the confusion. [1]: https://lore.kernel.org/all/CAK7LNAR6bXXk9-ZzZYpTqzFqdYbQsZHmiWspu27rtsFxvfRuVA@mail.gmail.com/ Fixes: 4a679593 ("kbuild: modpost: Explicitly warn about unprototyped symbols") Signed-off-by:
Masahiro Yamada <masahiroy@kernel.org> Acked-by:
Mark Brown <broonie@kernel.org> Reviewed-by:
Nick Desaulniers <ndesaulniers@google.com>
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git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull block driver fix from Jens Axboe: "Got two reports on nbd spewing warnings on load now, which is a regression from a commit that went into your tree yesterday. Revert the problematic change for now" * tag 'for-5.18/drivers-2022-04-02' of git://git.kernel.dk/linux-block: Revert "nbd: fix possible overflow on 'first_minor' in nbd_dev_add()"
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pciLinus Torvalds authored
Pull pci fix from Bjorn Helgaas: - Fix Hyper-V "defined but not used" build issue added during merge window (YueHaibing) * tag 'pci-v5.18-changes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI: hv: Remove unused hv_set_msi_entry_from_desc()
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Linus Torvalds authored
Merge tag 'tag-chrome-platform-for-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux Pull chrome platform updates from Benson Leung: "cros_ec_typec: - Check for EC device - Fix a crash when using the cros_ec_typec driver on older hardware not capable of typec commands - Make try power role optional - Mux configuration reorganization series from Prashant cros_ec_debugfs: - Fix use after free. Thanks Tzung-bi sensorhub: - cros_ec_sensorhub fixup - Split trace include file misc: - Add new mailing list for chrome-platform development: chrome-platform@lists.linux.dev Now with patchwork!" * tag 'tag-chrome-platform-for-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux: platform/chrome: cros_ec_debugfs: detach log reader wq from devm platform: chrome: Split trace include file platform/chrome: cros_ec_typec: Update mux flags during partner removal platform/chrome: cros_ec_typec: Configure muxes at start of port update platform/chrome: cros_ec_typec: Get mux state inside configure_mux platform/chrome: cros_ec_typec: Move mux flag checks platform/chrome: cros_ec_typec: Check for EC device platform/chrome: cros_ec_typec: Make try power role optional MAINTAINERS: platform-chrome: Add new chrome-platform@lists.linux.dev list
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Jens Axboe authored
This reverts commit 6d35d04a. Both Gabriel and Borislav report that this commit casues a regression with nbd: sysfs: cannot create duplicate filename '/dev/block/43:0' Revert it before 5.18-rc1 and we'll investigage this separately in due time. Link: https://lore.kernel.org/all/YkiJTnFOt9bTv6A2@zn.tnic/Reported-by:
Gabriel L. Somlo <somlo@cmu.edu> Reported-by:
Borislav Petkov <bp@alien8.de> Signed-off-by:
Jens Axboe <axboe@kernel.dk>
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Eric Dumazet authored
Commit 7ea1a012 ("watch_queue: Free the alloc bitmap when the watch_queue is torn down") took care of the bitmap, but not the page array. BUG: memory leak unreferenced object 0xffff88810d9bc140 (size 32): comm "syz-executor335", pid 3603, jiffies 4294946994 (age 12.840s) hex dump (first 32 bytes): 40 a7 40 04 00 ea ff ff 00 00 00 00 00 00 00 00 @.@............. 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: kmalloc_array include/linux/slab.h:621 [inline] kcalloc include/linux/slab.h:652 [inline] watch_queue_set_size+0x12f/0x2e0 kernel/watch_queue.c:251 pipe_ioctl+0x82/0x140 fs/pipe.c:632 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] Reported-by: syzbot+25ea042ae28f3888727a@syzkaller.appspotmail.com Fixes: c73be61c ("pipe: Add general notification queue support") Signed-off-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
David Howells <dhowells@redhat.com> Cc: Jann Horn <jannh@google.com> Link: https://lore.kernel.org/r/20220322004654.618274-1-eric.dumazet@gmail.com/Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Steven Rostedt (Google) authored
After being merged, user_events become more visible to a wider audience that have concerns with the current API. It is too late to fix this for this release, but instead of a full revert, just mark it as BROKEN (which prevents it from being selected in make config). Then we can work finding a better API. If that fails, then it will need to be completely reverted. To not have the code silently bitrot, still allow building it with COMPILE_TEST. And to prevent the uapi header from being installed, then later changed, and then have an old distro user space see the old version, move the header file out of the uapi directory. Surround the include with CONFIG_COMPILE_TEST to the current location, but when the BROKEN tag is taken off, it will use the uapi directory, and fail to compile. This is a good way to remind us to move the header back. Link: https://lore.kernel.org/all/20220330155835.5e1f6669@gandalf.local.home Link: https://lkml.kernel.org/r/20220330201755.29319-1-mathieu.desnoyers@efficios.comSuggested-by:
Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by:
Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by:
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Steven Rostedt (Google) authored
While user_events API is under development and has been marked for broken to not let the API become fixed, move the header file out of the uapi directory. This is to prevent it from being installed, then later changed, and then have an old distro user space update with a new kernel, where applications see the user_events being available, but the old header is in place, and then they get compiled incorrectly. Also, surround the include with CONFIG_COMPILE_TEST to the current location, but when the BROKEN tag is taken off, it will use the uapi directory, and fail to compile. This is a good way to remind us to move the header back. Link: https://lore.kernel.org/all/20220330155835.5e1f6669@gandalf.local.home Link: https://lkml.kernel.org/r/20220330201755.29319-1-mathieu.desnoyers@efficios.com Link: https://lkml.kernel.org/r/20220401143903.188384f3@gandalf.local.homeSuggested-by:
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Christophe Leroy authored
ftrace_graph_is_dead() is used on hot paths, it just reads a variable in memory and is not worth suffering function call constraints. For instance, at entry of prepare_ftrace_return(), inlining it avoids saving prepare_ftrace_return() parameters to stack and restoring them after calling ftrace_graph_is_dead(). While at it using a static branch is even more performant and is rather well adapted considering that the returned value will almost never change. Inline ftrace_graph_is_dead() and replace 'kill_ftrace_graph' bool by a static branch. The performance improvement is noticeable. Link: https://lkml.kernel.org/r/e0411a6a0ed3eafff0ad2bc9cd4b0e202b4617df.1648623570.git.christophe.leroy@csgroup.euSigned-off-by:
Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by:
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