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2019-11-21habanalabs: split MMU properties to PCI/DRAMOmer Shpigelman
Split the properties used for MMU mappings to DRAM and PCI (host) types. This is a prerequisite for future ASICs support. Note that in Goya ASIC, the PMMU and DMMU are the same (except of page sizes) as only one MMU mechanism is used for both of the mapping types. Hence this patch should not have any effect on current behavior. Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai> Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2019-11-21habanalabs: re-factor MMU masks and documentationOmer Shpigelman
Some cosmetics around the MMU code to make it more self-explanatory. Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai> Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2019-11-21habanalabs: type specific MMU cache invalidationOmer Shpigelman
Add the ability to invalidate the necessary MMU cache only. This ability is a prerequisite for future ASICs support. Note that in Goya ASIC, a single cache is used for both host/DRAM mappings and hence this patch should not have any effect on current behavior. Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai> Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2019-11-21habanalabs: re-factor memory module codeOmer Shpigelman
Some of the functions in the memory module code were too long and/or contained multiple operations that are not always done together. Re-factor the code by dividing those functions to smaller functions which are more readable and maintainable. Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai> Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2019-11-21habanalabs: export uapi defines to user-spaceOded Gabbay
The two defines that control the maximum size of a command buffer and the maximum number of JOBS per CS need to be exported to the user as they are part of the API towards user-space. Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com> Reviewed-by: Omer Shpigelman <oshpigelman@habana.ai>
2019-11-21habanalabs: don't print error when queues are fullOded Gabbay
If the queues are full and we return -EAGAIN to the user, there is no need to print an error, as that case isn't an error and the user is expected to re-submit the work. Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com> Reviewed-by: Omer Shpigelman <oshpigelman@habana.ai>
2019-11-21habanalabs: increase max jobs number to 512Oded Gabbay
In training, there is a need for a large amount of patching to the recipe. This results in many command buffers contains a lot of DMA packets. The number of command buffers per CS is larger than the current maximum of 64, which is an arbitrary number that is enough for inference, but it has no real affect on the code and/or resources of the host machine. Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com> Reviewed-by: Omer Shpigelman <oshpigelman@habana.ai>
2019-11-21habanalabs: set ETR as non-securedOded Gabbay
ETR should always be non-secured as it is used by the users to record profiling/trace data. Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com> Reviewed-by: Omer Shpigelman <oshpigelman@habana.ai>
2019-11-21habanalabs: use registers name defines for ETR blockOded Gabbay
We have a single ETR block in the SOC, so use explicit register name defines for initializing this block. This makes it more readable and maintainable. Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com> Reviewed-by: Omer Shpigelman <oshpigelman@habana.ai>
2019-11-21habanalabs: read F/W versions before failureOded Gabbay
Move the read of the F/W boot versions before exiting on possible failures of the F/W boot. This will help debug boot failures as we will be able to know the F/W boot version. Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com> Reviewed-by: Omer Shpigelman <oshpigelman@habana.ai>
2019-11-21habanalabs: expose card name in INFO IOCTLOded Gabbay
To enable userspace processes, e.g. management utilities, to display the card name to the user, add the card name property to the HW_IP structure that is copied to the user in the INFO IOCTL. Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2019-11-21habanalabs: remove set but not used variable 'qman_base_addr'YueHaibing
Fixes gcc '-Wunused-but-set-variable' warning: drivers/misc/habanalabs/goya/goya.c: In function 'goya_init_mme_cmdq': drivers/misc/habanalabs/goya/goya.c:1536:6: warning: variable 'qman_base_addr' set but not used [-Wunused-but-set-variable] It is never used, so can be removed. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: YueHaibing <yuehaibing@huawei.com> Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2019-11-21habanalabs: add opcode to INFO IOCTL to return clock rateOded Gabbay
Add a new opcode to the INFO IOCTL to allow the user application to retrieve the ASIC's current and maximum clock rate. The rate is returned in MHz. Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com> Reviewed-by: Tomer Tayar <ttayar@habana.ai>
2019-11-21habanalabs: set TPC Icache to 16 cache linesOded Gabbay
Reduce latency to memory during TPC kernel execution. Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com> Reviewed-by: Tomer Tayar <ttayar@habana.ai>
2019-11-21habanalabs: Add a new H/W queue typeTomer Tayar
This patch adds a support for a new H/W queue type. This type of queue is for DMA and compute engines jobs, for which completion notification are sent by H/W. Command buffer for this queue can be created either through the CB IOCTL and using the retrieved CB handle, or by preparing a buffer on the host or device SRAM/DRAM, and using the device address to that buffer. The patch includes the handling of the 2 options, as well as the initialization of the H/W queue and its jobs scheduling. Signed-off-by: Tomer Tayar <ttayar@habana.ai> Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2019-11-21habanalabs: Mark queue as expecting CB handle or addressTomer Tayar
Jobs on some queues must be provided with a handle to a driver command buffer object, while for other queues, jobs must be provided with an address to a command buffer. Currently the distinction is done based on the queue type, which is less flexible if the same queue type behaves differently on different types of ASICs. This patch adds a new queue property for this target, which is configured per queue type per ASIC type. Signed-off-by: Tomer Tayar <ttayar@habana.ai> Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2019-11-21habanalabs: Fix typosTomer Tayar
s/paerser/parser/ s/requeusted/requested/ s/an JOB/a JOB/ Signed-off-by: Tomer Tayar <ttayar@habana.ai> Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2019-11-21habanalabs: remove set but not used variable 'ctx'YueHaibing
Fixes gcc '-Wunused-but-set-variable' warning: drivers/misc/habanalabs/device.c: In function hpriv_release: drivers/misc/habanalabs/device.c:45:17: warning: variable ctx set but not used [-Wunused-but-set-variable] It is never used since commit eb7caf84b029 ("habanalabs: maintain a list of file private data objects") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: YueHaibing <yuehaibing@huawei.com> Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2019-11-21habanalabs: handle F/W failure for sensor initializationOded Gabbay
In case the F/W fails to initialize the thermal sensors, print an appropriate error message to kernel log and fail the device initialization. Reviewed-by: Tomer Tayar <ttayar@habana.ai> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2019-11-21afs: xattr: use scnprintfMark Salyzyn
sprintf and snprintf are fragile in future maintenance, switch to using scnprintf to ensure no accidental Use After Free conditions are introduced. Signed-off-by: Mark Salyzyn <salyzyn@android.com> Cc: linux-kernel@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org Cc: David Howells <dhowells@redhat.com> Cc: linux-afs@lists.infradead.org Cc: Jan Kara <jack@suse.cz> Signed-off-by: David Howells <dhowells@redhat.com>
2019-11-21afs: Introduce an afs_get_read() refcount helperDavid Howells
Introduce an afs_get_read() helper to get a reference on an afs_read object. Signed-off-by: David Howells <dhowells@redhat.com>
2019-11-21afs: Rename desc -> req in afs_fetch_data()David Howells
Rename the desc parameter to req in afs_fetch_data() for consistency with other functions. Signed-off-by: David Howells <dhowells@redhat.com>
2019-11-21afs: Switch the naming of call->iter and call->_iterDavid Howells
Change the name of call->iter to call->def_iter to represent the default iterator. Change the name of call->_iter to call->iter to represent the iterator actually being used. Signed-off-by: David Howells <dhowells@redhat.com>
2019-11-21afs: Use call->_iter not &call->iter in debugging statementsDavid Howells
Use call->_iter not &call->iter in debugging statements as the latter is a convenience iter whereas the former represents we're actually doing at the moment. Signed-off-by: David Howells <dhowells@redhat.com>
2019-11-21KVM: vmx: use MSR_IA32_TSX_CTRL to hard-disable TSX on guest that lack itPaolo Bonzini
If X86_FEATURE_RTM is disabled, the guest should not be able to access MSR_IA32_TSX_CTRL. We can therefore use it in KVM to force all transactions from the guest to abort. Tested-by: Jim Mattson <jmattson@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-11-21KVM: vmx: implement MSR_IA32_TSX_CTRL disable RTM functionalityPaolo Bonzini
The current guest mitigation of TAA is both too heavy and not really sufficient. It is too heavy because it will cause some affected CPUs (those that have MDS_NO but lack TAA_NO) to fall back to VERW and get the corresponding slowdown. It is not really sufficient because it will cause the MDS_NO bit to disappear upon microcode update, so that VMs started before the microcode update will not be runnable anymore afterwards, even with tsx=on. Instead, if tsx=on on the host, we can emulate MSR_IA32_TSX_CTRL for the guest and let it run without the VERW mitigation. Even though MSR_IA32_TSX_CTRL is quite heavyweight, and we do not want to write it on every vmentry, we can use the shared MSR functionality because the host kernel need not protect itself from TSX-based side-channels. Tested-by: Jim Mattson <jmattson@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-11-21KVM: x86: implement MSR_IA32_TSX_CTRL effect on CPUIDPaolo Bonzini
Because KVM always emulates CPUID, the CPUID clear bit (bit 1) of MSR_IA32_TSX_CTRL must be emulated "manually" by the hypervisor when performing said emulation. Right now neither kvm-intel.ko nor kvm-amd.ko implement MSR_IA32_TSX_CTRL but this will change in the next patch. Reviewed-by: Jim Mattson <jmattson@google.com> Tested-by: Jim Mattson <jmattson@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-11-21KVM: x86: do not modify masked bits of shared MSRsPaolo Bonzini
"Shared MSRs" are guest MSRs that are written to the host MSRs but keep their value until the next return to userspace. They support a mask, so that some bits keep the host value, but this mask is only used to skip an unnecessary MSR write and the value written to the MSR is always the guest MSR. Fix this and, while at it, do not update smsr->values[slot].curr if for whatever reason the wrmsr fails. This should only happen due to reserved bits, so the value written to smsr->values[slot].curr will not match when the user-return notifier and the host value will always be restored. However, it is untidy and in rare cases this can actually avoid spurious WRMSRs on return to userspace. Cc: stable@vger.kernel.org Reviewed-by: Jim Mattson <jmattson@google.com> Tested-by: Jim Mattson <jmattson@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-11-21KVM: x86: fix presentation of TSX feature in ARCH_CAPABILITIESPaolo Bonzini
KVM does not implement MSR_IA32_TSX_CTRL, so it must not be presented to the guests. It is also confusing to have !ARCH_CAP_TSX_CTRL_MSR && !RTM && ARCH_CAP_TAA_NO: lack of MSR_IA32_TSX_CTRL suggests TSX was not hidden (it actually was), yet the value says that TSX is not vulnerable to microarchitectural data sampling. Fix both. Cc: stable@vger.kernel.org Tested-by: Jim Mattson <jmattson@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-11-21Merge tag 'kvmarm-5.5' of ↵Paolo Bonzini
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD KVM/arm updates for Linux 5.5: - Allow non-ISV data aborts to be reported to userspace - Allow injection of data aborts from userspace - Expose stolen time to guests - GICv4 performance improvements - vgic ITS emulation fixes - Simplify FWB handling - Enable halt pool counters - Make the emulated timer PREEMPT_RT compliant Conflicts: include/uapi/linux/kvm.h
2019-11-21drm/i915/fbdev: Restore physical addresses for fb_mmap()Chris Wilson
fbdev uses the physical address of our framebuffer for its fb_mmap() routine. While we need to adapt this address for the new io BAR, we have to fix v5.4 first! The simplest fix is to restore the smem back to v5.3 and we will then probably have to implement our fbops->fb_mmap() callback to handle local memory. Reported-by: Neil MacLeod <freedesktop@nmacleod.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=112256 Fixes: 5f889b9a61dd ("drm/i915: Disregard drm_mode_config.fb_base") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Tested-by: Neil MacLeod <freedesktop@nmacleod.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191113180633.3947-1-chris@chris-wilson.co.uk (cherry picked from commit abc5520704ab438099fe352636b30b05c1253bea) Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> (cherry picked from commit 9faf5fa4d3dad3b0c0fa6e67689c144981a11c27) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2019-11-21nds32: Move static keyword to the front of declarationKrzysztof Wilczynski
Move the static keyword to the front of declaration of cpu_pmu_of_device_ids, and resolve the following compiler warning that can be seen when building with warnings enabled (W=1): arch/nds32/kernel/perf_event_cpu.c:1122:1: warning: ‘static’ is not at beginning of declaration [-Wold-style-declaration] Signed-off-by: Krzysztof Wilczynski <kw@linux.com> Acked-by: Greentime Hu <green.hu@gmail.com> Signed-off-by: Greentime Hu <green.hu@gmail.com>
2019-11-21nds32: Fix typo in Kconfig.cpuMasanari Iida
This patch fixes some spelling typo in Kconfig.cpu Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Greentime Hu <green.hu@gmail.com> Signed-off-by: Greentime Hu <green.hu@gmail.com>
2019-11-21nds32: remove unneeded clean-files for DTBMasahiro Yamada
These patterns are cleaned-up by the top-level Makefile Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Greentime Hu <green.hu@gmail.com> Signed-off-by: Greentime Hu <green.hu@gmail.com>
2019-11-21serial: serial_core: Perform NULL checks for break_ctl opsJiangfeng Xiao
Doing fuzz test on sbsa uart device, causes a kernel crash due to NULL pointer dereference: ------------[ cut here ]------------ Unable to handle kernel paging request at virtual address fffffffffffffffc pgd = ffffffe331723000 [fffffffffffffffc] *pgd=0000002333595003, *pud=0000002333595003, *pmd=00000 Internal error: Oops: 96000005 [#1] PREEMPT SMP Modules linked in: ping(O) jffs2 rtos_snapshot(O) pramdisk(O) hisi_sfc(O) Drv_Nandc_K(O) Drv_SysCtl_K(O) Drv_SysClk_K(O) bsp_reg(O) hns3(O) hns3_uio_enet(O) hclgevf(O) hclge(O) hnae3(O) mdio_factory(O) mdio_registry(O) mdio_dev(O) mdio(O) hns3_info(O) rtos_kbox_panic(O) uart_suspend(O) rsm(O) stp llc tunnel4 xt_tcpudp ipt_REJECT nf_reject_ipv4 iptable_filter ip_tables x_tables sd_mod xhci_plat_hcd xhci_pci xhci_hcd usbmon usbhid usb_storage ohci_platform ohci_pci ohci_hcd hid_generic hid ehci_platform ehci_pci ehci_hcd vfat fat usbcore usb_common scsi_mod yaffs2multi(O) ext4 jbd2 ext2 mbcache ofpart i2c_dev i2c_core uio ubi nand nand_ecc nand_ids cfi_cmdset_0002 cfi_cmdset_0001 cfi_probe gen_probe cmdlinepart chipreg mtdblock mtd_blkdevs mtd nfsd auth_rpcgss oid_registry nfsv3 nfs nfs_acl lockd sunrpc grace autofs4 CPU: 2 PID: 2385 Comm: tty_fuzz_test Tainted: G O 4.4.193 #1 task: ffffffe32b23f110 task.stack: ffffffe32bda4000 PC is at uart_break_ctl+0x44/0x84 LR is at uart_break_ctl+0x34/0x84 pc : [<ffffff8393196098>] lr : [<ffffff8393196088>] pstate: 80000005 sp : ffffffe32bda7cc0 x29: ffffffe32bda7cc0 x28: ffffffe32b23f110 x27: ffffff8393402000 x26: 0000000000000000 x25: ffffffe32b233f40 x24: ffffffc07a8ec680 x23: 0000000000005425 x22: 00000000ffffffff x21: ffffffe33ed73c98 x20: 0000000000000000 x19: ffffffe33ed94168 x18: 0000000000000004 x17: 0000007f92ae9d30 x16: ffffff8392fa6064 x15: 0000000000000010 x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000020 x10: 0000007ffdac1708 x9 : 0000000000000078 x8 : 000000000000001d x7 : 0000000052a64887 x6 : ffffffe32bda7e08 x5 : ffffffe32b23c000 x4 : 0000005fbc5b0000 x3 : ffffff83938d5018 x2 : 0000000000000080 x1 : ffffffe32b23c040 x0 : ffffff83934428f8 virtual start addr offset is 38ac00000 module base offset is 2cd4cf1000 linear region base offset is : 0 Process tty_fuzz_test (pid: 2385, stack limit = 0xffffffe32bda4000) Stack: (0xffffffe32bda7cc0 to 0xffffffe32bda8000) 7cc0: ffffffe32bda7cf0 ffffff8393177718 ffffffc07a8ec680 ffffff8393196054 7ce0: 000000001739f2e0 0000007ffdac1978 ffffffe32bda7d20 ffffff8393179a1c 7d00: 0000000000000000 ffffff8393c0a000 ffffffc07a8ec680 cb88537fdc8ba600 7d20: ffffffe32bda7df0 ffffff8392fa5a40 ffffff8393c0a000 0000000000005425 7d40: 0000007ffdac1978 ffffffe32b233f40 ffffff8393178dcc 0000000000000003 7d60: 000000000000011d 000000000000001d ffffffe32b23f110 000000000000029e 7d80: ffffffe34fe8d5d0 0000000000000000 ffffffe32bda7e14 cb88537fdc8ba600 7da0: ffffffe32bda7e30 ffffff8393042cfc ffffff8393c41720 ffffff8393c46410 7dc0: ffffff839304fa68 ffffffe32b233f40 0000000000005425 0000007ffdac1978 7de0: 000000000000011d cb88537fdc8ba600 ffffffe32bda7e70 ffffff8392fa60cc 7e00: 0000000000000000 ffffffe32b233f40 ffffffe32b233f40 0000000000000003 7e20: 0000000000005425 0000007ffdac1978 ffffffe32bda7e70 ffffff8392fa60b0 7e40: 0000000000000280 ffffffe32b233f40 ffffffe32b233f40 0000000000000003 7e60: 0000000000005425 cb88537fdc8ba600 0000000000000000 ffffff8392e02e78 7e80: 0000000000000280 0000005fbc5b0000 ffffffffffffffff 0000007f92ae9d3c 7ea0: 0000000060000000 0000000000000015 0000000000000003 0000000000005425 7ec0: 0000007ffdac1978 0000000000000000 00000000a54c910e 0000007f92b95014 7ee0: 0000007f92b95090 0000000052a64887 000000000000001d 0000000000000078 7f00: 0000007ffdac1708 0000000000000020 0000000000000000 0000000000000000 7f20: 0000000000000000 0000000000000010 000000556acf0090 0000007f92ae9d30 7f40: 0000000000000004 000000556acdef10 0000000000000000 000000556acdebd0 7f60: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 7f80: 0000000000000000 0000000000000000 0000000000000000 0000007ffdac1840 7fa0: 000000556acdedcc 0000007ffdac1840 0000007f92ae9d3c 0000000060000000 7fc0: 0000000000000000 0000000000000000 0000000000000003 000000000000001d 7fe0: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 Call trace: Exception stack(0xffffffe32bda7ab0 to 0xffffffe32bda7bf0) 7aa0: 0000000000001000 0000007fffffffff 7ac0: ffffffe32bda7cc0 ffffff8393196098 0000000080000005 0000000000000025 7ae0: ffffffe32b233f40 ffffff83930d777c ffffffe32bda7b30 ffffff83930d777c 7b00: ffffffe32bda7be0 ffffff83938d5000 ffffffe32bda7be0 ffffffe32bda7c20 7b20: ffffffe32bda7b60 ffffff83930d777c ffffffe32bda7c10 ffffff83938d5000 7b40: ffffffe32bda7c10 ffffffe32bda7c50 ffffff8393c0a000 ffffffe32b23f110 7b60: ffffffe32bda7b70 ffffff8392e09df4 ffffffe32bda7bb0 cb88537fdc8ba600 7b80: ffffff83934428f8 ffffffe32b23c040 0000000000000080 ffffff83938d5018 7ba0: 0000005fbc5b0000 ffffffe32b23c000 ffffffe32bda7e08 0000000052a64887 7bc0: 000000000000001d 0000000000000078 0000007ffdac1708 0000000000000020 7be0: 0000000000000000 0000000000000000 [<ffffff8393196098>] uart_break_ctl+0x44/0x84 [<ffffff8393177718>] send_break+0xa0/0x114 [<ffffff8393179a1c>] tty_ioctl+0xc50/0xe84 [<ffffff8392fa5a40>] do_vfs_ioctl+0xc4/0x6e8 [<ffffff8392fa60cc>] SyS_ioctl+0x68/0x9c [<ffffff8392e02e78>] __sys_trace_return+0x0/0x4 Code: b9410ea0 34000160 f9408aa0 f9402814 (b85fc280) ---[ end trace 8606094f1960c5e0 ]--- Kernel panic - not syncing: Fatal exception Fix this problem by adding NULL checks prior to calling break_ctl ops. Signed-off-by: Jiangfeng Xiao <xiaojiangfeng@huawei.com> Cc: stable <stable@vger.kernel.org> Link: https://lore.kernel.org/r/1574263133-28259-1-git-send-email-xiaojiangfeng@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-21Bluetooth: btbcm: Add entry for BCM4335A0 UART bluetoothMohammad Rasim
This patch adds the device ID for the BCM4335A0 module (part of the AMPAK AP6335 WIFI/Bluetooth combo) hciconfig output: ``` hci1: Type: Primary Bus: UART BD Address: 43:35:B0:07:1F:AC ACL MTU: 1021:8 SCO MTU: 64:1 UP RUNNING RX bytes:5079 acl:0 sco:0 events:567 errors:0 TX bytes:69065 acl:0 sco:0 commands:567 errors:0 Features: 0xbf 0xfe 0xcf 0xff 0xdf 0xff 0x7b 0x87 Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 Link policy: RSWITCH SNIFF Link mode: SLAVE ACCEPT Name: 'alarm' Class: 0x000000 Service Classes: Unspecified Device Class: Miscellaneous, HCI Version: 4.0 (0x6) Revision: 0x161 LMP Version: 4.0 (0x6) Subversion: 0x4106 Manufacturer: Broadcom Corporation (15) ``` Signed-off-by: Mohammad Rasim <mohammad.rasim96@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2019-11-21dt-bindings: net: Add compatible for BCM4335A0 bluetoothMohammad Rasim
Available in the Ampak AP6335 WiFi/Bluetooth combo Signed-off-by: Mohammad Rasim <mohammad.rasim96@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2019-11-21rackmeter: Use vtime aware kcpustat accessorFrederic Weisbecker
Now that we have a vtime safe kcpustat accessor, use it to fetch CPUTIME_NICE and fix frozen kcpustat values on nohz_full CPUs. Reported-by: Yauheni Kaliuta <yauheni.kaliuta@redhat.com> Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wanpeng Li <wanpengli@tencent.com> Link: https://lkml.kernel.org/r/20191121024430.19938-7-frederic@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-11-21leds: Use all-in-one vtime aware kcpustat accessorFrederic Weisbecker
We can now safely read user kcpustat fields on nohz_full CPUs. Use the appropriate accessor. [ mingo: Fixed build failure. ] Reported-by: Yauheni Kaliuta <yauheni.kaliuta@redhat.com> Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Cc: Jacek Anaszewski <jacek.anaszewski@gmail.com> (maintainer:LED SUBSYSTEM) Cc: Pavel Machek <pavel@ucw.cz> (maintainer:LED SUBSYSTEM) Cc: Dan Murphy <dmurphy@ti.com> (reviewer:LED SUBSYSTEM) Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wanpeng Li <wanpengli@tencent.com> Link: https://lkml.kernel.org/r/20191121024430.19938-6-frederic@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-11-21pcmcia: Use dev_get_drvdata where possibleChuhong Yuan
Instead of using to_pci_dev + pci_get_drvdata, use dev_get_drvdata to make code simpler. Signed-off-by: Chuhong Yuan <hslester96@gmail.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2019-11-21pcmcia: clean an indentation issues, remove extraneous spacesColin Ian King
Trivial fix to clean up indentation issues, remove spaces Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2019-11-21perf/core: Make the mlock accounting simple againAlexander Shishkin
Commit: d44248a41337 ("perf/core: Rework memory accounting in perf_mmap()") does a lot of things to the mlock accounting arithmetics, while the only thing that actually needed to happen is subtracting the part that is charged to the mm from the part that is charged to the user, so that the former isn't charged twice. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Acked-by: Song Liu <songliubraving@fb.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wanpeng Li <wanpengli@tencent.com> Cc: Yauheni Kaliuta <yauheni.kaliuta@redhat.com> Cc: songliubraving@fb.com Link: https://lkml.kernel.org/r/20191120170640.54123-1-alexander.shishkin@linux.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-11-21cpufreq: Use vtime aware kcpustat accessors for user timeFrederic Weisbecker
We can now safely read user and guest kcpustat fields on nohz_full CPUs. Use the appropriate accessors. Reported-by: Yauheni Kaliuta <yauheni.kaliuta@redhat.com> Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wanpeng Li <wanpengli@tencent.com> Link: https://lkml.kernel.org/r/20191121024430.19938-5-frederic@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-11-21procfs: Use all-in-one vtime aware kcpustat accessorFrederic Weisbecker
Now that we can read also user and guest time safely under vtime, use the relevant accessor to fix frozen kcpustat values on nohz_full CPUs. Reported-by: Yauheni Kaliuta <yauheni.kaliuta@redhat.com> Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wanpeng Li <wanpengli@tencent.com> Link: https://lkml.kernel.org/r/20191121024430.19938-4-frederic@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-11-21sched/vtime: Bring up complete kcpustat accessorFrederic Weisbecker
Many callsites want to fetch the values of system, user, user_nice, guest or guest_nice kcpustat fields altogether or at least a pair of these. In that case calling kcpustat_field() for each requested field brings unecessary overhead when we could fetch all of them in a row. So provide kcpustat_cpu_fetch() that fetches the whole kcpustat array in a vtime safe way under the same RCU and seqcount block. Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wanpeng Li <wanpengli@tencent.com> Cc: Yauheni Kaliuta <yauheni.kaliuta@redhat.com> Link: https://lkml.kernel.org/r/20191121024430.19938-3-frederic@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-11-21sched/cputime: Support other fields on kcpustat_field()Frederic Weisbecker
Provide support for user, nice, guest and guest_nice fields through kcpustat_field(). Whether we account the delta to a nice or not nice field is decided on top of the nice value snapshot taken at the time we call kcpustat_field(). If the nice value of the task has been changed since the last vtime update, we may have inacurrate distribution of the nice VS unnice cputime. However this is considered as a minor issue compared to the proper fix that would involve interrupting the target on nice updates, which is undesired on nohz_full CPUs. Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wanpeng Li <wanpengli@tencent.com> Cc: Yauheni Kaliuta <yauheni.kaliuta@redhat.com> Link: https://lkml.kernel.org/r/20191121024430.19938-2-frederic@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-11-20net: sfp: soft status and control supportRussell King
Add support for the soft status and control register, which allows TX_FAULT and RX_LOS to be monitored and TX_DISABLE to be set. We make use of this when the board does not support GPIOs for these signals. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-20Merge branch 'sfp-quirks'David S. Miller
Russell King says: ==================== Add rudimentary SFP module quirk support The SFP module EEPROM describes the capabilities of the module, but doesn't describe the host interface. We have a certain amount of guess-work to work out how to configure the host - which works most of the time. However, there are some (such as GPON) modules which are able to support different host interfaces, such as 1000BASE-X and 2500BASE-X. The module will switch between each mode until it achieves link with the host. There is no defined way to describe this in the SFP EEPROM, so we can only recognise the module and handle it appropriately. This series adds the necessary recognition of the modules using a quirk system, and tweaks the support mask to allow them to link with the host at 2500BASE-X, thereby allowing the user to achieve full line rate. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-20net: sfp: add some quirks for GPON modulesRussell King
Marc Micalizzi reports that Huawei MA5671A and Alcatel/Lucent G-010S-P modules are capable of 2500base-X, but incorrectly report their capabilities in the EEPROM. It seems rather common that GPON modules mis-report. Let's fix these modules by adding some quirks. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-20net: sfp: add support for module quirksRussell King
Add support for applying module quirks to the list of supported ethtool link modes. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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