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2018-10-09init: add arch_call_rest_init to allow stack switchingMartin Schwidefsky
With CONFIG_VMAP_STACK=y the kernel stack of all tasks should be allocated in the vmalloc space. The initial stack used for all the early init code is in the init_thread_union. To be able to switch from this early stack to a properly allocated stack from vmalloc the architecture needs a switch-over point. Introduce the arch_call_rest_init() function with a weak definition in init/main.c with the only purpose to call rest_init() from the end of start_kernel(). The architecture override can then do the necessary magic to switch to the new vmalloc'ed stack. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2018-10-09s390/pfault: do not use stack buffers for hardware dataMartin Schwidefsky
With CONFIG_VMAP_STACK=y the stack is allocated from the vmalloc space. Data structures passed to a hardware or a hypervisor interface that requires V=R can not be allocated on the stack anymore. Make the init and fini pfault parameter blocks static variables. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2018-10-09s390/monwriter: do not use stack buffers for hardware dataMartin Schwidefsky
With CONFIG_VMAP_STACK=y the stack is allocated from the vmalloc space. Data structures passed to a hardware or a hypervisor interface that requires V=R can not be allocated on the stack anymore. Use kmalloc to get memory for the appldata_parameter_list and appldata_product_id structures. Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2018-10-09s390/hypfs: do not use stack buffers for hardware dataMartin Schwidefsky
With CONFIG_VMAP_STACK=y the stack is allocated from the vmalloc space. Data structures passed to a hardware or a hypervisor interface that requires V=R can not be allocated on the stack anymore. Use kmalloc to get memory for the hypsfs_diag304 structure. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2018-10-09s390/appldata: do not use stack buffers for hardware dataMartin Schwidefsky
With CONFIG_VMAP_STACK=y the stack is allocated from the vmalloc space. Data structures passed to a hardware or a hypervisor interface that requires V=R can not be allocated on the stack anymore. Use kmalloc to get memory for the appldata_product_id and the appldata_parameter_list structures. Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2018-10-09s390/appldata: pass parameter list pointer to appldata_asmMartin Schwidefsky
In preparation for CONFIG_VMAP_STACK=y move the allocation of the struct appldata_parameter_list to the caller of appldata_asm(). Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2018-10-09dmaengine: fsl-edma: remove dma_slave_config direction usageVinod Koul
dma_slave_config direction was marked as deprecated quite some time back, remove the usage from this driver so that the field can be removed Tested-by: Krzysztof Kozlowski <krzk@kernel.org> Tested-by: Angelo Dureghello <angelo@sysam.it> Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-10-09HID: google: drop superfluous const before SIMPLE_DEV_PM_OPS()Jiri Kosina
SIMPLE_DEV_PM_OPS() already implies const for the type; drop the extra modifier. Fixes: eb1aac4c8744f75460c34d71b0c73bebf3e8ee5c ("HID: google: add support tablet mode switch for Whiskers") Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-10-09HID: google: add support tablet mode switch for WhiskersDmitry Torokhov
Whiskers is a foldable base, and thus requires combining "base presence" signal coming from EC with base state signal (folded/unfolded) coming from USB/HID interface to produce proper SW_TABLET_MODE event. Signed-off-by: Nicolas Boichat <drinkcat@chromium.org> Signed-off-by: Dmitry Torokhov <dtor@chromium.org> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-10-09mfd: cros: add "base attached" MKBP switch definitionDmitry Torokhov
This adds a "base attached" switch definition to the MKBP protocol that is used by Whiskers driver to properly determine device state (clamshell vs tablet mode). Signed-off-by: Dmitry Torokhov <dtor@chromium.org> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-10-09locking/lockdep: Make class->ops a percpu counter and move it under ↵Waiman Long
CONFIG_DEBUG_LOCKDEP=y A sizable portion of the CPU cycles spent on the __lock_acquire() is used up by the atomic increment of the class->ops stat counter. By taking it out from the lock_class structure and changing it to a per-cpu per-lock-class counter, we can reduce the amount of cacheline contention on the class structure when multiple CPUs are trying to acquire locks of the same class simultaneously. To limit the increase in memory consumption because of the percpu nature of that counter, it is now put back under the CONFIG_DEBUG_LOCKDEP config option. So the memory consumption increase will only occur if CONFIG_DEBUG_LOCKDEP is defined. The lock_class structure, however, is reduced in size by 16 bytes on 64-bit archs after ops removal and a minor restructuring of the fields. This patch also fixes a bug in the increment code as the counter is of the 'unsigned long' type, but atomic_inc() was used to increment it. Signed-off-by: Waiman Long <longman@redhat.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Link: http://lkml.kernel.org/r/d66681f3-8781-9793-1dcf-2436a284550b@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-10-09PM / tools: sleepgraph and bootgraph: upgrade to v5.2Todd Brandt
bootgraph & sleepgraph: - funnel all prints through the pprint function - remove superfluous print calls, arrange them in single blocks - flush stdout on every print, enables log capture on hang sleepgraph: - in -summary, if all tests have the same host+kernel+mode, add to title - update verbose device detail print to include machine suspend/resume - match tKernSus and tKernRes to pm_prepare/restore_console - fully support multiple suspend/resumes in a single timeline - enable various disk modes (disk-suspend, disk-test_resume, etc) - add warnings when -display (xset) fails Signed-off-by: Todd Brandt <todd.e.brandt@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-10-09PM / tools: sleepgraph: first batch of v5.2 changesTodd Brandt
general: - add battery charge data before and after test - remove special s0i3 handling - remove melding of dmesg & ftrace data in old kernels, use one only - updates to various kprobes in trace (ksys_sync, etc) - enable pm_debug_messages during the test - instrument more subsystems with dev functions (phy0) error handling: - return codes for tool show the status of the test run - 0: success, 1: general error (no timeline), 2: fail (suspend aborted) - monitor output of /sys/power/state, mark as failure if exception occurs - add signal handler when using -result to catch tool exceptions display control - add -x commands for testing xset with mode settings and status - allow display setting to on, off, suspend, standby - add display mode change info to the log, along with a warning on fail s2idle (freeze) - remove fixed 10-phase dependency, allow any phase order & any count - multiple phase occurences show as phase_nameN e.g. suspend_noirq3 - if multiple freezes occur, print multiple time values in header summary: - add new columns to summary output: issues, worst suspend/resume devices - worst device: includes summation of all phases of suspend or resume - issues: includes WARNING/ERROR/BUG from dmesg log, and other issues - s2idle: multiple freezes show as FREEZExN in the issues column Signed-off-by: Todd Brandt <todd.e.brandt@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-10-09Merge branch 'fixes' into nextUlf Hansson
2018-10-09mmc: block: avoid multiblock reads for the last sector in SPI modeChris Boot
On some SD cards over SPI, reading with the multiblock read command the last sector will leave the card in a bad state. Remove last sectors from the multiblock reading cmd. Signed-off-by: Chris Boot <bootc@bootc.net> Signed-off-by: Clément Péron <peron.clem@gmail.com> Cc: stable@vger.kernel.org # v4.10+ Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09Merge tag 'arc-4.19-rc8' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc Vineet writes: "ARC updates for 4.19-rc8 - Fix clone syscall to update Thread pointer register - Make/build updates (needed for AGL/OE builds) [Alexey] - Typo fix [Colin Ian King]" * tag 'arc-4.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: ARC: clone syscall to setp r25 as thread pointer ARC: build: Don't set CROSS_COMPILE in arch's Makefile ARC: fix spelling mistake "entires" -> "entries" ARC: build: Get rid of toolchain check ARCv2: build: use mcpu=hs38 iso generic mcpu=archs
2018-10-09mmc: mmci: add stm32 sdmmc variantLudovic Barre
This patch adds a stm32 sdmmc variant, rev 1.1. Introduces a new Manufacturer id "0x53, ascii 'S' to define new stm32 sdmmc family with clean range of amba revision/configurations bits (corresponding to sdmmc_ver register with major/minor fields). Add 2 variants properties: -dma_lli, to enable link list support. -stm32_idmabsize_mask, defines the range of SDMMC_IDMABSIZER register which specify the number bytes per buffer. DT properties for sdmmc: -Indicate signal directions (only one property for d0dir, d123dir, cmd_dir) -Select command and data phase relation. -Select "clock in" from an external driver. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09dt-bindings: mmci: add stm32 sdmmc variantLudovic Barre
This patch adds properties for stm32 sdmmc variant. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09mmc: mmci: add stm32 sdmmc registersLudovic Barre
This patch adds stm32 sdmmc specific registers. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09mmc: mmci: add clock divider for stm32 sdmmcLudovic Barre
The STM32 sdmmc variant has a different clock divider. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09mmc: mmci: add optional reset propertyLudovic Barre
This patch adds a optional reset management. STM32 sdmmc variant needs to reset hardware block during the power cycle procedure (for re-initialization). Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09dt-bindings: mmci: add optional reset propertyLudovic Barre
This patch adds a optional reset management. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09mmc: mmci: add variant property to not read datacntLudovic Barre
This patch adds a boolean property to not read datacnt register. Needed to support the STM32 sdmmc variant. MMCIDATACNT register should be read only after the data transfer is completed. When reading after an error event the read data count value may be different from the real number of data bytes transferred. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09mmc: mmci: add variant property to write datactrl before commandLudovic Barre
This patch adds a boolean property to allow to write datactrl before to send command, whatever the command type (read or write). Needed to support the STM32 sdmmc variant. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09mmc: mmci: add variant property to define irq pio maskLudovic Barre
This patch allows to define specific pio mask for variants. Needed to support the STM32 sdmmc variant which has some bits with different meaning (bits: 21,20,13,12,9) Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09mmc: mmci: add variant property to define dpsm bitLudovic Barre
This patch adds datactrl variant property to define dpsm enable bit. Needed to support the STM32 variant (STM32 has no dpsm enable bit). Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09mmc: mmci: add variant properties to define cpsm & cmdresp bitsLudovic Barre
This patch adds command variant properties to define cpsm enable bit and responses. Needed to support the STM32 variant (shift of cpsm bit, specific definition of commands response). Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09mmc: mmci: expand startbiterr to irqmask and error checkLudovic Barre
All variants don't pretend to have a startbiterr. -While data error check, if status register return an error (like MCI_DATACRCFAIL) we must avoid to check MCI_STARTBITERR (if not desired). -expand start_err to MCI_IRQENABLE to avoid to set this bit by default. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09mmc: mmci: add datactrl block size variant propertyLudovic Barre
This patch allows to define a datactrl block size by variant, requested by STM32 sdmmc variant. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09mmc: mmci: add set_clk/pwrreg callbacksLudovic Barre
This patch adds set_clkreg and set_pwrreg callbacks at mmci_host_ops to allow to call specific variant. extends visibility of mmci_write_clk/pwrreg functions to be used into specific file variant. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09mmc: mmci: add validate_data callbackLudovic Barre
This patch adds validate_data callback at mmci_host_ops to check specific constraints of variant. Move mmci_validate_data function to regroup mmci_host_ops interfaces. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09mmc: mmci: add dma_error callbackLudovic Barre
This patch adds dma_error callback at mmci_host_ops to allow to call specific variant. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09mmc: mmci: add dma_finalize callbackLudovic Barre
This patch adds dma_finalize callback at mmci_host_ops to allow to call specific variant. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09mmc: mmci: add dma_start callbackLudovic Barre
This patch adds dma_start callback to mmci_host_ops. Create a generic mmci_dma_start function which regroup common action between variant. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09mmc: mmci: add get_next_data callbackLudovic Barre
This patch adds get_next_data callback to mmci_host_ops. Generic mmci_get_next_data factorizes next_cookie check and the host ops call. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09mmc: mmci: add prepare/unprepare_data callbacksLudovic Barre
This patch adds prepare/unprepare callbacks to mmci_host_ops. Like this mmci_pre/post_request can be generic, mmci_prepare_data and mmci_unprepare_data provide common next_cookie management. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09mmc: mmci: merge prepare data functionsLudovic Barre
This patch merges the prepare data functions. This allows to define a single access to prepare data service. This prepares integration for mmci host ops. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09mmc: mmci: introduce dma_priv pointer to mmci_hostLudovic Barre
-Introduces dma_priv pointer to define specific needs for each dma engine. This patch is needed to prepare sdmmc variant with internal dma which not use dmaengine API. -Moves next cookie to mmci host structure to share same cookie management between all variants. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09mmc: mmci: create common mmci_dma_setup/releaseLudovic Barre
This patch creates a common mmci_dma_setup/release which calls dma_setup/release callbacks of mmci_host_ops and manages common features like use_dma... If there is a fallbacks to pio mode, dma functions must check use_dma. error management: -mmci_dmae_setup fail if Tx and Rx dma channels are not defined -qcom_dma_setup fail if one of both dma channels is not defined, Qcom has no specific resource to release, just mmci dmae resource. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09libnvdimm, pmem: Fix badblocks population for 'raw' namespacesDan Williams
The driver is only initializing bb_res in the devm_memremap_pages() paths, but the raw namespace case is passing an uninitialized bb_res to nvdimm_badblocks_populate(). Fixes: e8d513483300 ("memremap: change devm_memremap_pages interface...") Cc: <stable@vger.kernel.org> Cc: Christoph Hellwig <hch@lst.de> Reported-by: Jacek Zloch <jacek.zloch@intel.com> Reported-by: Krzysztof Rusocki <krzysztof.rusocki@intel.com> Reviewed-by: Vishal Verma <vishal.l.verma@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2018-10-09mmc: sdhci-of-arasan: Add Support for AM654 MMC and PHYFaiz Abbas
The current arasan sdhci PHY configuration isn't compatible with the PHY on TI's AM654 devices. Therefore, add a new compatible, AM654 specific quirks and a new AM654 specific set_clock function which configures the PHY in a sane way. Signed-off-by: Faiz Abbas <faiz_abbas@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09mmc: sdhci-of-arasan: Add a single data structure to incorporate pdata and ↵Faiz Abbas
soc_ctl_map Currently, the driver passes platform data as a global structure and uses the .data of of_device_id to pass the soc_ctl_map. To make the implementation more flexible add a single data structure that incorporates both of the above and pass it in the .data of of_device_id. Signed-off-by: Faiz Abbas <faiz_abbas@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09dt-bindings: mmc: sdhci-of-arasan: Add new compatible for AM654 MMC PHYFaiz Abbas
Add a new compatible to use the host controller driver with the MMC PHY on TI's AM654 SOCs Signed-off-by: Faiz Abbas <faiz_abbas@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-10-09x86/mm: Avoid VLA in pgd_alloc()Kees Cook
Arnd Bergmann reported that turning on -Wvla found a new (unintended) VLA usage: arch/x86/mm/pgtable.c: In function 'pgd_alloc': include/linux/build_bug.h:29:45: error: ISO C90 forbids variable length array 'u_pmds' [-Werror=vla] arch/x86/mm/pgtable.c:190:34: note: in expansion of macro 'static_cpu_has' #define PREALLOCATED_USER_PMDS (static_cpu_has(X86_FEATURE_PTI) ? \ ^~~~~~~~~~~~~~ arch/x86/mm/pgtable.c:431:16: note: in expansion of macro 'PREALLOCATED_USER_PMDS' pmd_t *u_pmds[PREALLOCATED_USER_PMDS]; ^~~~~~~~~~~~~~~~~~~~~~ Use the actual size of the array that is used for X86_FEATURE_PTI, which is known at build time, instead of the variable size. [ mingo: Squashed original fix with followup fix to avoid bisection breakage, wrote new changelog. ] Reported-by: Arnd Bergmann <arnd@arndb.de> Original-written-by: Arnd Bergmann <arnd@arndb.de> Reported-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Joerg Roedel <jroedel@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Toshi Kani <toshi.kani@hpe.com> Fixes: 1be3f247c288 ("x86/mm: Avoid VLA in pgd_alloc()") Link: http://lkml.kernel.org/r/20181008235434.GA35035@beast Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-10-09x86/intel_rdt: Fix initial allocation to consider CDPReinette Chatre
When a new resource group is created it is initialized with a default allocation that considers which portions of cache are currently available for sharing across all resource groups or which portions of cache are currently unused. If a CDP allocation forms part of a resource group that is in exclusive mode then it should be ensured that no new allocation overlaps with any resource that shares the underlying hardware. The current initial allocation does not take this sharing of hardware into account and a new allocation in a resource that shares the same hardware would affect the exclusive resource group. Fix this by considering the allocation of a peer RDT domain - a RDT domain sharing the same hardware - as part of the test to determine which portion of cache is in use and available for use. Fixes: 95f0b77efa57 ("x86/intel_rdt: Initialize new resource group with sane defaults") Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Fenghua Yu <fenghua.yu@intel.com> Cc: tony.luck@intel.com Cc: jithu.joseph@intel.com Cc: gavin.hindman@intel.com Cc: dave.hansen@intel.com Cc: hpa@zytor.com Link: https://lkml.kernel.org/r/b1f7ec08b1695be067de416a4128466d49684317.1538603665.git.reinette.chatre@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-10-09x86/intel_rdt: CBM overlap should also check for overlap with CDP peerReinette Chatre
The CBM overlap test is used to manage the allocations of RDT resources where overlap is possible between resource groups. When a resource group is in exclusive mode then there should be no overlap between resource groups. The current overlap test only considers overlap between the same resources, for example, that usage of a RDT_RESOURCE_L2DATA resource in one resource group does not overlap with usage of a RDT_RESOURCE_L2DATA resource in another resource group. The problem with this is that it allows overlap between a RDT_RESOURCE_L2DATA resource in one resource group with a RDT_RESOURCE_L2CODE resource in another resource group - even if both resource groups are in exclusive mode. This is a problem because even though these appear to be different resources they end up sharing the same underlying hardware and thus does not fulfill the user's request for exclusive use of hardware resources. Fix this by including the CDP peer (if there is one) in every CBM overlap test. This does not impact the overlap between resources within the same exclusive resource group that is allowed. Fixes: 49f7b4efa110 ("x86/intel_rdt: Enable setting of exclusive mode") Reported-by: Jithu Joseph <jithu.joseph@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Jithu Joseph <jithu.joseph@intel.com> Acked-by: Fenghua Yu <fenghua.yu@intel.com> Cc: tony.luck@intel.com Cc: gavin.hindman@intel.com Cc: dave.hansen@intel.com Cc: hpa@zytor.com Link: https://lkml.kernel.org/r/e538b7f56f7ca15963dce2e00ac3be8edb8a68e1.1538603665.git.reinette.chatre@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-10-09x86/intel_rdt: Introduce utility to obtain CDP peerReinette Chatre
Introduce a utility that, when provided with a RDT resource and an instance of this RDT resource (a RDT domain), would return pointers to the RDT resource and RDT domain that share the same hardware. This is specific to the CDP resources that share the same hardware. For example, if a pointer to the RDT_RESOURCE_L2DATA resource (struct rdt_resource) and a pointer to an instance of this resource (struct rdt_domain) is provided, then it will return a pointer to the RDT_RESOURCE_L2CODE resource as well as the specific instance that shares the same hardware as the provided rdt_domain. This utility is created in support of the "exclusive" resource group mode where overlap of resource allocation between resource groups need to be avoided. The overlap test need to consider not just the matching resources, but also the resources that share the same hardware. Temporarily mark it as unused in support of patch testing to avoid compile warnings until it is used. Fixes: 49f7b4efa110 ("x86/intel_rdt: Enable setting of exclusive mode") Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Jithu Joseph <jithu.joseph@intel.com> Acked-by: Fenghua Yu <fenghua.yu@intel.com> Cc: tony.luck@intel.com Cc: gavin.hindman@intel.com Cc: dave.hansen@intel.com Cc: hpa@zytor.com Link: https://lkml.kernel.org/r/9b4bc4d59ba2e903b6a3eb17e16ef41a8e7b7c3e.1538603665.git.reinette.chatre@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-10-09Merge branch 'x86/urgent' into x86/cache, to pick up dependent fixIngo Molnar
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-10-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextDavid S. Miller
Alexei Starovoitov says: ==================== pull-request: bpf-next 2018-10-08 The following pull-request contains BPF updates for your *net-next* tree. The main changes are: 1) sk_lookup_[tcp|udp] and sk_release helpers from Joe Stringer which allow BPF programs to perform lookups for sockets in a network namespace. This would allow programs to determine early on in processing whether the stack is expecting to receive the packet, and perform some action (eg drop, forward somewhere) based on this information. 2) per-cpu cgroup local storage from Roman Gushchin. Per-cpu cgroup local storage is very similar to simple cgroup storage except all the data is per-cpu. The main goal of per-cpu variant is to implement super fast counters (e.g. packet counters), which don't require neither lookups, neither atomic operations in a fast path. The example of these hybrid counters is in selftests/bpf/netcnt_prog.c 3) allow HW offload of programs with BPF-to-BPF function calls from Quentin Monnet 4) support more than 64-byte key/value in HW offloaded BPF maps from Jakub Kicinski 5) rename of libbpf interfaces from Andrey Ignatov. libbpf is maturing as a library and should follow good practices in library design and implementation to play well with other libraries. This patch set brings consistent naming convention to global symbols. 6) relicense libbpf as LGPL-2.1 OR BSD-2-Clause from Alexei Starovoitov to let Apache2 projects use libbpf 7) various AF_XDP fixes from Björn and Magnus ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-09mm, sched/numa: Remove remaining traces of NUMA rate-limitingSrikar Dronamraju
Remove the leftover pglist_data::numabalancing_migrate_lock and its initialization, we stopped using this lock with: efaffc5e40ae ("mm, sched/numa: Remove rate-limiting of automatic NUMA balancing migration") [ mingo: Rewrote the changelog. ] Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Acked-by: Mel Gorman <mgorman@techsingularity.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Linux-MM <linux-mm@kvack.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@surriel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1538824999-31230-1-git-send-email-srikar@linux.vnet.ibm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>