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2018-11-11Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds1-2/+12
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Thomas Gleixner: "A set of x86 fixes: - Cure the LDT remapping to user space on 5 level paging which ended up in the KASLR space - Remove LDT mapping before freeing the LDT pages - Make NFIT MCE handling more robust - Unbreak the VSMP build by removing the dependency on paravirt ops - Support broken PIT emulation on Microsoft hyperV - Don't trace vmware_sched_clock() to avoid tracer recursion - Remove -pipe from KBUILD CFLAGS which breaks clang and is also slower on GCC - Trivial coding style and typo fixes" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu/vmware: Do not trace vmware_sched_clock() x86/vsmp: Remove dependency on pv_irq_ops x86/ldt: Remove unused variable in map_ldt_struct() x86/ldt: Unmap PTEs for the slot before freeing LDT pages x86/mm: Move LDT remap out of KASLR region on 5-level paging acpi/nfit, x86/mce: Validate a MCE's address before using it acpi/nfit, x86/mce: Handle only uncorrectable machine checks x86/build: Remove -pipe from KBUILD_CFLAGS x86/hyper-v: Fix indentation in hv_do_fast_hypercall16() Documentation/x86: Fix typo in zero-page.txt x86/hyper-v: Enable PIT shutdown quirk clockevents/drivers/i8253: Add support for PIT shutdown quirk
2018-11-04Merge branch 'timers-urgent-for-linus' of ↵Linus Torvalds4-0/+347
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull more timer updates from Thomas Gleixner: "A set of commits for the new C-SKY architecture timers" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: dt-bindings: timer: gx6605s SOC timer clocksource/drivers/c-sky: Add gx6605s SOC system timer dt-bindings: timer: C-SKY Multi-processor timer clocksource/drivers/c-sky: Add C-SKY SMP timer
2018-11-04clockevents/drivers/i8253: Add support for PIT shutdown quirkMichael Kelley1-2/+12
Add support for platforms where pit_shutdown() doesn't work because of a quirk in the PIT emulation. On these platforms setting the counter register to zero causes the PIT to start running again, negating the shutdown. Provide a global variable that controls whether the counter register is zero'ed, which platform specific code can override. Signed-off-by: Michael Kelley <mikelley@microsoft.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org> Cc: "devel@linuxdriverproject.org" <devel@linuxdriverproject.org> Cc: "daniel.lezcano@linaro.org" <daniel.lezcano@linaro.org> Cc: "virtualization@lists.linux-foundation.org" <virtualization@lists.linux-foundation.org> Cc: "jgross@suse.com" <jgross@suse.com> Cc: "akataria@vmware.com" <akataria@vmware.com> Cc: "olaf@aepfle.de" <olaf@aepfle.de> Cc: "apw@canonical.com" <apw@canonical.com> Cc: vkuznets <vkuznets@redhat.com> Cc: "jasowang@redhat.com" <jasowang@redhat.com> Cc: "marcelo.cerri@canonical.com" <marcelo.cerri@canonical.com> Cc: KY Srinivasan <kys@microsoft.com> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/1541303219-11142-2-git-send-email-mikelley@microsoft.com
2018-11-02clocksource/drivers/c-sky: Add gx6605s SOC system timerGuo Ren3-0/+163
The driver is for gx6605s SOC system timer and there are two same timers in gx6605s. We use one for clkevt and another one for clksrc. The timer is mmio map to access, so we need give mmio address in dts. The counter at 0x0 offset is clock event. The counter at 0x40 offset is clock source. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-11-02clocksource/drivers/c-sky: Add C-SKY SMP timerGuo Ren3-0/+184
The driver is for C-SKY SMP timer. It only supports oneshot event and 32bit overflow for clocksource. Per cpu core has one timer and all timers share one clock-counter-input from the same clocksource. This use mfcr&mtcr instructions to access the regs. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-10-25Merge tag 'riscv-for-linus-4.20-mw0' of ↵Linus Torvalds1-4/+8
git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux Pull RISC-V updates from Palmer Dabbelt: "This patch set contains a lot (at least, for me) of improvements to the RISC-V kernel port: - The removal of some cacheinfo values that were bogus. - On systems with F but without D the kernel will not show the F extension to userspace, as it isn't actually supported. - Support for futexes. - Removal of some unused code. - Cleanup of some menuconfig entries. - Support for systems without a floating-point unit, and for building kernels that will never use the floating-point unit. - More fixes to the RV32I port, which regressed again. It's really time to get this into a regression test somewhere so I stop breaking it. Thanks to Zong for resurrecting it again! - Various fixes that resulted from a year old review of our original patch set that I finally got around to. - Various improvements to SMP support, largely based around having switched to logical hart numbering, as well as some interrupt improvements. This one is in the same patch set as above, thanks to Atish for sheparding everything though as my patch set was a bit of a mess. I'm pretty sure this is our largest patch set since the original kernel contribution, and it's certainly the one with the most contributors. While I don't have anything else I know I'm going to submit for the merge window, I would be somewhat surprised if I didn't screw anything up. Thanks for the help, everyone!" * tag 'riscv-for-linus-4.20-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux: (31 commits) RISC-V: Cosmetic menuconfig changes riscv: move GCC version check for ARCH_SUPPORTS_INT128 to Kconfig RISC-V: remove the unused return_to_handler export RISC-V: Add futex support. RISC-V: Add FP register ptrace support for gdb. RISC-V: Mask out the F extension on systems without D RISC-V: Don't set cacheinfo.{physical_line_partition,attributes} RISC-V: Show IPI stats RISC-V: Show CPU ID and Hart ID separately in /proc/cpuinfo RISC-V: Use Linux logical CPU number instead of hartid RISC-V: Add logical CPU indexing for RISC-V RISC-V: Use WRITE_ONCE instead of direct access RISC-V: Use mmgrab() RISC-V: Rename im_okay_therefore_i_am to found_boot_cpu RISC-V: Rename riscv_of_processor_hart to riscv_of_processor_hartid RISC-V: Provide a cleaner raw_smp_processor_id() RISC-V: Disable preemption before enabling interrupts RISC-V: Comment on the TLB flush in smp_callin() RISC-V: Filter ISA and MMU values in cpuinfo RISC-V: Don't set cacheinfo.{physical_line_partition,attributes} ...
2018-10-25Merge branch 'timers-core-for-linus' of ↵Linus Torvalds23-113/+100
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timekeeping updates from Thomas Gleixner: "The timers and timekeeping departement provides: - Another large y2038 update with further preparations for providing the y2038 safe timespecs closer to the syscalls. - An overhaul of the SHCMT clocksource driver - SPDX license identifier updates - Small cleanups and fixes all over the place" * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits) tick/sched : Remove redundant cpu_online() check clocksource/drivers/dw_apb: Add reset control clocksource: Remove obsolete CLOCKSOURCE_OF_DECLARE clocksource/drivers: Unify the names to timer-* format clocksource/drivers/sh_cmt: Add R-Car gen3 support dt-bindings: timer: renesas: cmt: document R-Car gen3 support clocksource/drivers/sh_cmt: Properly line-wrap sh_cmt_of_table[] initializer clocksource/drivers/sh_cmt: Fix clocksource width for 32-bit machines clocksource/drivers/sh_cmt: Fixup for 64-bit machines clocksource/drivers/sh_tmu: Convert to SPDX identifiers clocksource/drivers/sh_mtu2: Convert to SPDX identifiers clocksource/drivers/sh_cmt: Convert to SPDX identifiers clocksource/drivers/renesas-ostm: Convert to SPDX identifiers clocksource: Convert to using %pOFn instead of device_node.name tick/broadcast: Remove redundant check RISC-V: Request newstat syscalls y2038: signal: Change rt_sigtimedwait to use __kernel_timespec y2038: socket: Change recvmmsg to use __kernel_timespec y2038: sched: Change sched_rr_get_interval to use __kernel_timespec y2038: utimes: Rework #ifdef guards for compat syscalls ...
2018-10-22RISC-V: Use Linux logical CPU number instead of hartidAtish Patra1-4/+8
Setup the cpu_logical_map during boot. Moreover, every SBI call and PLIC context are based on the physical hartid. Use the logical CPU to hartid mapping to pass correct hartid to respective functions. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup@brainfault.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22RISC-V: Rename riscv_of_processor_hart to riscv_of_processor_hartidPalmer Dabbelt1-1/+1
It's a bit confusing exactly what this function does: it actually returns the hartid of an OF processor node, failing with -1 on invalid nodes. I've changed the name to _hartid() in order to make that a bit more clear, as well as adding a comment. Signed-off-by: Palmer Dabbelt <palmer@sifive.com> [Atish: code comment formatting update] Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-10-22Merge tag 'arm64-upstream' of ↵Linus Torvalds1-0/+15
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 updates from Catalin Marinas: "Apart from some new arm64 features and clean-ups, this also contains the core mmu_gather changes for tracking the levels of the page table being cleared and a minor update to the generic compat_sys_sigaltstack() introducing COMPAT_SIGMINSKSZ. Summary: - Core mmu_gather changes which allow tracking the levels of page-table being cleared together with the arm64 low-level flushing routines - Support for the new ARMv8.5 PSTATE.SSBS bit which can be used to mitigate Spectre-v4 dynamically without trapping to EL3 firmware - Introduce COMPAT_SIGMINSTKSZ for use in compat_sys_sigaltstack - Optimise emulation of MRS instructions to ID_* registers on ARMv8.4 - Support for Common Not Private (CnP) translations allowing threads of the same CPU to share the TLB entries - Accelerated crc32 routines - Move swapper_pg_dir to the rodata section - Trap WFI instruction executed in user space - ARM erratum 1188874 workaround (arch_timer) - Miscellaneous fixes and clean-ups" * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (78 commits) arm64: KVM: Guests can skip __install_bp_hardening_cb()s HYP work arm64: cpufeature: Trap CTR_EL0 access only where it is necessary arm64: cpufeature: Fix handling of CTR_EL0.IDC field arm64: cpufeature: ctr: Fix cpu capability check for late CPUs Documentation/arm64: HugeTLB page implementation arm64: mm: Use __pa_symbol() for set_swapper_pgd() arm64: Add silicon-errata.txt entry for ARM erratum 1188873 Revert "arm64: uaccess: implement unsafe accessors" arm64: mm: Drop the unused cpu parameter MAINTAINERS: fix bad sdei paths arm64: mm: Use #ifdef for the __PAGETABLE_P?D_FOLDED defines arm64: Fix typo in a comment in arch/arm64/mm/kasan_init.c arm64: xen: Use existing helper to check interrupt status arm64: Use daifflag_restore after bp_hardening arm64: daifflags: Use irqflags functions for daifflags arm64: arch_timer: avoid unused function warning arm64: Trap WFI executed in userspace arm64: docs: Document SSBS HWCAP arm64: docs: Fix typos in ELF hwcaps arm64/kprobes: remove an extra semicolon in arch_prepare_kprobe ...
2018-10-07clocksource/drivers/dw_apb: Add reset controlDinh Nguyen1-0/+12
Add code to retrieve the reset property from the dw-apb timers and if the property is available, the safe operation is to assert the timer into reset, and followed by a deassert of the timer reset (brings the timer out of reset). This patch is needed for systems where the bootloader has left the timer not used in reset. - Trivial conflict with commit a74bd1ad7a: "Convert to using %pOFn instead of device_node.name" Reported-by: Marek Vasut <marex@denx.de> Signed-off-by: Dinh Nguyen <dinguyen@kernel.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-10-03clocksource/drivers: Unify the names to timer-* formatDaniel Lezcano14-13/+13
In order to make some housekeeping in the directory, this patch renames drivers to the timer-* format in order to unify their names. There is no functional changes. Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Vladimir Zapolskiy <vz@mleia.com> Acked-by: Liviu Dudau <liviu.dudau@arm.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-10-03clocksource/drivers/sh_cmt: Add R-Car gen3 supportSergei Shtylyov1-0/+8
Add support for the R-Car gen3 CMT types 0/1 -- they seem to be the same CMT types 0/1 as in R-Car gen2 SoCs. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-10-03clocksource/drivers/sh_cmt: Properly line-wrap sh_cmt_of_table[] initializerSergei Shtylyov1-2/+8
There's no good reason for the sh_cmt_of_table[] initializer to violate the 80-column limit, especially after the commit 8d50e9476bb4 ("clocksource/drivers/sh_cmt: Mark "renesas,cmt-48-gen2" deprecated") partially fixed it -- fix the R-Car gen2 related entries as well. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Reviewed-by: Chris Paterson <chris.paterson2@renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-10-03clocksource/drivers/sh_cmt: Fix clocksource width for 32-bit machinesSergei Shtylyov1-3/+3
The driver seems to abuse *unsigned long* not only for the (32-bit) register values but also for the 'sh_cmt_channel::total_cycles' which needs to always be 64-bit -- as a result, the clocksource's mask is needlessly clamped down to 32-bits on the 32-bit machines... Fixes: 19bdc9d061bc ("clocksource: sh_cmt clocksource support") Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-10-03clocksource/drivers/sh_cmt: Fixup for 64-bit machinesSergei Shtylyov1-39/+33
When trying to use CMT for clockevents on R-Car gen3 SoCs, I noticed that 'max_delta_ns' for the broadcast timer (CMT) was shown as 1000 in /proc/timer_list. It turned out that when calculating it, the driver did 1 << 32 (causing what I think was undefined behavior) resulting in a zero delta, later clamped to 1000 by cev_delta2ns(). The root cause turned out to be that the driver abused *unsigned long* for the CMT register values (which are 16/32-bit), so that the calculation of 'ch->max_match_value' in sh_cmt_setup_channel() used the wrong branch. Using more proper 'u32' instead fixed 'max_delta_ns' and even fixed the switching an active clocksource to CMT (which caused the system to turn non-interactive before). Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-10-03clocksource/drivers/sh_tmu: Convert to SPDX identifiersKuninori Morimoto1-9/+1
This patch updates license to use SPDX-License-Identifier instead of verbose license text. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-10-03clocksource/drivers/sh_mtu2: Convert to SPDX identifiersKuninori Morimoto1-9/+1
This patch updates license to use SPDX-License-Identifier instead of verbose license text. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-10-03clocksource/drivers/sh_cmt: Convert to SPDX identifiersKuninori Morimoto1-9/+1
This patch updates license to use SPDX-License-Identifier instead of verbose license text. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-10-03clocksource/drivers/renesas-ostm: Convert to SPDX identifiersKuninori Morimoto1-10/+1
This patch updates license to use SPDX-License-Identifier instead of verbose license text. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-10-03clocksource: Convert to using %pOFn instead of device_node.nameRob Herring8-19/+19
In preparation to remove the node name pointer from struct device_node, convert printf users to use the %pOFn format specifier. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Michal Simek <michal.simek@xilinx.com> Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-10-01arm64: arch_timer: Add workaround for ARM erratum 1188873Marc Zyngier1-0/+15
When running on Cortex-A76, a timer access from an AArch32 EL0 task may end up with a corrupted value or register. The workaround for this is to trap these accesses at EL1/EL2 and execute them there. This only affects versions r0p0, r1p0 and r2p0 of the CPU. Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2018-09-27clocksource/drivers/timer-atmel-pit: Properly handle error casesAlexandre Belloni1-6/+14
The smatch utility reports a possible leak: smatch warnings: drivers/clocksource/timer-atmel-pit.c:183 at91sam926x_pit_dt_init() warn: possible memory leak of 'data' Ensure data is freed before exiting with an error. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Cc: stable@vger.kernel.org Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-09-24clocksource/drivers/fttmr010: Fix set_next_event handlerTao Ren1-7/+11
Currently, the aspeed MATCH1 register is updated to <current_count - cycles> in set_next_event handler, with the assumption that COUNT register value is preserved when the timer is disabled and it continues decrementing after the timer is enabled. But the assumption is wrong: RELOAD register is loaded into COUNT register when the aspeed timer is enabled, which means the next event may be delayed because timer interrupt won't be generated until <0xFFFFFFFF - current_count + cycles>. The problem can be fixed by updating RELOAD register to <cycles>, and COUNT register will be re-loaded when the timer is enabled and interrupt is generated when COUNT register overflows. The test result on Facebook Backpack-CMM BMC hardware (AST2500) shows the issue is fixed: without the patch, usleep(100) suspends the process for several milliseconds (and sometimes even over 40 milliseconds); after applying the fix, usleep(100) takes averagely 240 microseconds to return under the same workload level. Signed-off-by: Tao Ren <taoren@fb.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Lei YU <mine260309@gmail.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-09-13clocksource/drivers/ti-32k: Add CLOCK_SOURCE_SUSPEND_NONSTOP flag for ↵Keerthy1-0/+3
non-am43 SoCs The 32k clocksource is NONSTOP for non-am43 SoCs. Hence add the flag for all the other SoCs. Reported-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Keerthy <j-keerthy@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-08-19Merge tag 'riscv-for-linus-4.19-mw0' of ↵Linus Torvalds3-0/+117
git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux Pull RISC-V updates from Palmer Dabbelt: "This contains some major improvements to the RISC-V port, including the necessary interrupt controller and timer support to actually make it to userspace. Support for three devices has been added: - the ISA-mandated timers on RISC-V systems. - the ISA-mandated first-level interrupt controller on RISC-V systems, which is handled as part of our core arch code because it's very small and tightly tied to the ISA. - SiFive's platform-level interrupt controller, which talks to the actual devices. In addition to these new devices, there are a handful of cleanups all over the RISC-V tree: - build fixes for various configurations: * A fix to the vDSO build's makefile so it respects CFLAGS. * The addition of __lshrti3, a libgcc derived function necessary for some 32-bit configurations. * !SMP && PERF_EVENTS - Cleanups to the arch code to remove the remnants of old versions of the drivers that were just properly submitted. * Some dead code from the timer driver, most of which wasn't ever even compiled. * Cleanups of some interrupt #defines, which are now local to the interrupt handling code. - Fixes to ptrace(), which while not being sufficient to fully make GDB work are at least sufficient to get simple GDB tasks to work. - Early printk support via RISC-V's architecturally mandated SBI console device. - A fix to our early debug trap handler to ensure it's always aligned. These patches have all been through a fairly extensive review process, but as this enables a whole pile of functionality (ie, userspace) I'm confident we'll need to submit a few more patches. The only concrete issues I know about are the sys_riscv_flush_icache patches, but as I managed to screw those up on Friday I figured it'd be best to let them bake another week. This tag boots a Fedora root filesystem on QEMU's master branch for me, and before this morning's rebase (from 4.18-rc8 to 4.18) it booted on the HiFive Unleashed. Thanks to Christoph Hellwig and the other guys at WD for getting the new drivers in shape!" * tag 'riscv-for-linus-4.19-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux: dt-bindings: interrupt-controller: SiFive Plaform Level Interrupt Controller dt-bindings: interrupt-controller: RISC-V local interrupt controller RISC-V: Fix !CONFIG_SMP compilation error irqchip: add a SiFive PLIC driver RISC-V: Add the directive for alignment of stvec's value clocksource: new RISC-V SBI timer driver RISC-V: implement low-level interrupt handling RISC-V: add a definition for the SIE SEIE bit RISC-V: remove INTERRUPT_CAUSE_* defines from asm/irq.h RISC-V: simplify software interrupt / IPI code RISC-V: remove timer leftovers RISC-V: Add early printk support via the SBI console RISC-V: Don't increment sepc after breakpoint. RISC-V: implement __lshrti3. RISC-V: Use KBUILD_CFLAGS instead of KCFLAGS when building the vDSO
2018-08-13Merge branch 'x86-timers-for-linus' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 timer updates from Thomas Gleixner: "Early TSC based time stamping to allow better boot time analysis. This comes with a general cleanup of the TSC calibration code which grew warts and duct taping over the years and removes 250 lines of code. Initiated and mostly implemented by Pavel with help from various folks" * 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (37 commits) x86/kvmclock: Mark kvm_get_preset_lpj() as __init x86/tsc: Consolidate init code sched/clock: Disable interrupts when calling generic_sched_clock_init() timekeeping: Prevent false warning when persistent clock is not available sched/clock: Close a hole in sched_clock_init() x86/tsc: Make use of tsc_calibrate_cpu_early() x86/tsc: Split native_calibrate_cpu() into early and late parts sched/clock: Use static key for sched_clock_running sched/clock: Enable sched clock early sched/clock: Move sched clock initialization and merge with generic clock x86/tsc: Use TSC as sched clock early x86/tsc: Initialize cyc2ns when tsc frequency is determined x86/tsc: Calibrate tsc only once ARM/time: Remove read_boot_clock64() s390/time: Remove read_boot_clock64() timekeeping: Default boot time offset to local_clock() timekeeping: Replace read_boot_clock64() with read_persistent_wall_and_boot_offset() s390/time: Add read_persistent_wall_and_boot_offset() x86/xen/time: Output xen sched_clock time from 0 x86/xen/time: Initialize pv xen time in init_hypervisor_platform() ...
2018-08-13clocksource: new RISC-V SBI timer driverPalmer Dabbelt3-0/+117
The RISC-V ISA defines a per-hart real-time clock and timer, which is present on all systems. The clock is accessed via the 'rdtime' pseudo-instruction (which reads a CSR), and the timer is set via an SBI call. Contains various improvements from Atish Patra <atish.patra@wdc.com>. Signed-off-by: Dmitriy Cherkasov <dmitriy@oss-tech.org> Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com> [hch: remove dead code, add SPDX tags, used riscv_of_processor_hart(), minor cleanups, merged hotplug cpu support and other improvements from Atish] Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Atish Patra <atish.patra@wdc.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-08-02clocksource/drivers/arm_arch_timer: Fix bogus cpu_all_mask usageThomas Gleixner1-1/+1
Using cpu_all_mask as target mask for clockevents is wrong as it never can actually target not possible CPUs. Use cpu_possible_mask instead Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-08-02clocksource: ti-32k: Remove CLOCK_SOURCE_SUSPEND_NONSTOP flagKeerthy1-2/+1
Since commit 39232ed5a179 ("time: Introduce one suspend clocksource to compensate the suspend time") suspend/resume fails on AM437x platforms as the clocksource actually stops in suspend. Hence remove the CLOCK_SOURCE_SUSPEND_NONSTOP flag. Suggested-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: <daniel.lezcano@linaro.org> Cc: <linux-omap@vger.kernel.org> Cc: <baolin.wang@linaro.org> Cc: <d-gerlach@ti.com> Cc: <tony@atomide.com> Cc: <t-kristo@ti.com> Link: https://lkml.kernel.org/r/1533191716-20476-1-git-send-email-j-keerthy@ti.com
2018-07-26clocksource/drivers/sprd: Register one always-on timer to compensate suspend ↵Baolin Wang1-0/+50
time Since the clocksource framework has introduced one suspend clocksource to compensate the suspend time, this patch registers one always-on timer as the suspend clocksource. Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-07-26clocksource/drivers/timer-mediatek: Add support for system timerStanley Chu1-1/+103
This patch adds a new "System Timer" on the Mediatek SoCs. The System Timer is introduced as an always-on timer being clockevent device for tick-broadcasting. For clock, it is driven by 13 MHz system clock. The implementation uses the system clock with no clock source divider. For interrupt, the clock event timer can be used by all cores. Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-07-26clocksource/drivers/timer-mediatek: Convert the driver to timer-ofStanley Chu1-125/+80
Convert the driver to use the timer_of helpers. This allows to remove custom proprietary structure, factors out and simplifies the code. Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-07-26clocksource/drivers/timer-mediatek: Use specific prefix for GPTStanley Chu1-77/+80
Use specific prefix to specify the name of supported timer hardware: "General Purpose Timer (GPT)". Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-07-26clocksource/drivers/timer-mediatek: Rename mtk_timer to timer-mediatekStanley Chu2-1/+1
Rename mtk_timer to timer-mediatek to apply new naming convention in clocksource folder. Signed-off-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-07-26clocksource/drivers: Set clockevent device cpumask to cpu_possible_maskSudeep Holla4-4/+4
Currently, quite a few clockevent devices have cpumask set to cpu_all_mask which should be fine. However, cpu_possible_mask is more accurate and if there are any other clockevent devices in the system which have cpumask set to cpu_possible_mask, then having cpu_all_mask may result in issues (mostly boot hang with forever loops in clockevents_notify_released). So, lets replace all the clockevent device cpu_all_mask to cpu_possible_mask in order to prevent above mentioned possible issue. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Jonathan Hunter <jonathanh@nvidia.com> Cc: Santosh Shilimkar <ssantosh@kernel.org> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-07-20ARM/time: Remove read_boot_clock64()Pavel Tatashin1-1/+1
read_boot_clock64() is deleted, and replaced with read_persistent_wall_and_boot_offset(). The default implementation of read_persistent_wall_and_boot_offset() provides a better fallback than the current stubs for read_boot_clock64() that arm has with no users, so remove the old code. Signed-off-by: Pavel Tatashin <pasha.tatashin@oracle.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: steven.sistare@oracle.com Cc: daniel.m.jordan@oracle.com Cc: linux@armlinux.org.uk Cc: schwidefsky@de.ibm.com Cc: heiko.carstens@de.ibm.com Cc: john.stultz@linaro.org Cc: sboyd@codeaurora.org Cc: hpa@zytor.com Cc: douly.fnst@cn.fujitsu.com Cc: peterz@infradead.org Cc: prarit@redhat.com Cc: feng.tang@intel.com Cc: pmladek@suse.com Cc: gnomes@lxorguk.ukuu.org.uk Cc: linux-s390@vger.kernel.org Cc: boris.ostrovsky@oracle.com Cc: jgross@suse.com Cc: pbonzini@redhat.com Link: https://lkml.kernel.org/r/20180719205545.16512-19-pasha.tatashin@oracle.com
2018-07-10clocksource: arm_arch_timer: Set arch_mem_timer cpumask to cpu_possible_maskSudeep Holla1-1/+1
Currently, arch_mem_timer cpumask is set to cpu_all_mask which should be fine. However, cpu_possible_mask is more accurate and if there are other clockevent source in the system which are set to cpu_possible_mask, then having cpu_all_mask may result in issue. E.g. on a platform with arm,sp804 timer with rating 300 and cpu_possible_mask and this arch_mem_timer timer with rating 400 and cpu_all_mask, tick_check_preferred may choose both preferred as the cpumasks are not equal though they must be. This issue was root caused incorrectly initially and a fix was merged as commit 1332a9055801 ("tick: Prefer a lower rating device only if it's CPU local device"). Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Kevin Hilman <khilman@baylibre.com> Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Link: https://lkml.kernel.org/r/1531151136-18297-2-git-send-email-sudeep.holla@arm.com
2018-06-24Merge branch 'timers-urgent-for-linus' of ↵Linus Torvalds1-1/+3
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer fixes from Thomas Gleixner: "A small set of fixes for time(r) related issues: - Fix a long standing conversion issue in jiffies_to_msecs() for odd HZ values like 1024 or 1200 which resulted in returning 0 for small jiffies values due to rounding down. - Use the proper CONFIG symbol in the new Y2038 safe compat code for posix-timers. Not yet a visible breakage, but this will immediately trigger when the architecture support for the new interfaces is merged. - Return an error code in the STM32 clocksource driver on failure instead of success. - Remove the redundant and stale irq disabled check in the posix cpu timer code. The check is at the wrong place anyway and lockdep already covers it via the sighand lock locking coverage" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: time: Make sure jiffies_to_msecs() preserves non-zero time periods posix-timers: Fix nanosleep_copyout() for CONFIG_COMPAT_32BIT_TIME clocksource/drivers/stm32: Fix error return code posix-cpu-timers: Remove lockdep_assert_irqs_disabled()
2018-06-12treewide: kzalloc() -> kcalloc()Kees Cook3-3/+3
The kzalloc() function has a 2-factor argument form, kcalloc(). This patch replaces cases of: kzalloc(a * b, gfp) with: kcalloc(a * b, gfp) as well as handling cases of: kzalloc(a * b * c, gfp) with: kzalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kzalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kzalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kzalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kzalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kzalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(char) * COUNT + COUNT , ...) | kzalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kzalloc + kcalloc ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kzalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kzalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kzalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kzalloc(C1 * C2 * C3, ...) | kzalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kzalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kzalloc(sizeof(THING) * C2, ...) | kzalloc(sizeof(TYPE) * C2, ...) | kzalloc(C1 * C2 * C3, ...) | kzalloc(C1 * C2, ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - (E1) * E2 + E1, E2 , ...) | - kzalloc + kcalloc ( - (E1) * (E2) + E1, E2 , ...) | - kzalloc + kcalloc ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12clocksource/drivers/stm32: Fix error return codeJulia Lawall1-1/+3
Return an error code on failure. Problem found using Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: kernel-janitors@vger.kernel.org Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com> Cc: Alexandre Torgue <alexandre.torgue@st.com> Cc: linux-arm-kernel@lists.infradead.org Link: https://lkml.kernel.org/r1528640655-18948-3-git-send-email-Julia.Lawall@lip6.fr
2018-06-09Merge tag 'clk-for-linus' of ↵Linus Torvalds1-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux Pull clk updates from Stephen Boyd: "This time we have a good set of changes to the core framework that do some general cleanups, but nothing too major. The majority of the diff goes to two SoCs, Actions Semi and Qualcomm. A brand new driver is introduced for Actions Semi so it takes up some lines to add all the different types, and the Qualcomm diff is there because we add support for two SoCs and it's quite a bit of data. Otherwise the big driver updates are on TI Davinci and Amlogic platforms. And then the long tail of driver updates for various fixes and stuff follows after that. Core: - debugfs cleanups removing error checking and an unused provider API - Removal of a clk init typedef that isn't used - Usage of match_string() to simplify parent string name matching - OF clk helpers moved to their own file (linux/of_clk.h) - Make clk warnings more readable across kernel versions New Drivers: - Qualcomm SDM845 GCC and Video clk controllers - Qualcomm MSM8998 GCC - Actions Semi S900 SoC support - Nuvoton npcm750 microcontroller clks - Amlogic axg AO clock controller Removed Drivers: - Deprecated Rockchip clk-gate driver Updates: - debugfs functions stopped checking return values - Support for the MSIOF module clocks on Rensas R-Car M3-N - Support for the new Rensas RZ/G1C and R-Car E3 SoCs - Qualcomm GDSC, RCG, and PLL updates for clk changes in new SoCs - Berlin and Amlogic SPDX tagging - Usage of of_clk_get_parent_count() in more places - Proper implementation of the CDEV1/2 clocks on Tegra20 - Allwinner H6 PRCM clock support and R40 EMAC support - Add critical flag to meson8b's fdiv2 as temporary fixup for ethernet - Round closest support for meson's mpll driver - Support for meson8b nand clocks and gxbb video decoder clocks - Mediatek mali clks - STM32MP1 fixes - Uniphier LD11/LD20 stream demux system clock" * tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (134 commits) clk: qcom: Export clk_fabia_pll_configure() clk: bcm: Update and add Stingray clock entries dt-bindings: clk: Update Stingray binding doc clk-si544: Properly round requested frequency to nearest match clk: ingenic: jz4770: Add 150us delay after enabling VPU clock clk: ingenic: jz4770: Enable power of AHB1 bus after ungating VPU clock clk: ingenic: jz4770: Modify C1CLK clock to disable CPU clock stop on idle clk: ingenic: jz4770: Change OTG from custom to standard gated clock clk: ingenic: Support specifying "wait for clock stable" delay clk: ingenic: Add support for clocks whose gate bit is inverted clk: use match_string() helper clk: bcm2835: use match_string() helper clk: Return void from debug_init op clk: remove clk_debugfs_add_file() clk: tegra: no need to check return value of debugfs_create functions clk: davinci: no need to check return value of debugfs_create functions clk: bcm2835: no need to check return value of debugfs_create functions clk: no need to check return value of debugfs_create functions clk: imx6: add EPIT clock support clk: mvebu: use correct bit for 98DX3236 NAND ...
2018-05-23clocksource/drivers/mxs_timer: Switch to SPDX identifierFabio Estevam1-21/+7
Adopt the SPDX license identifier headers to ease license compliance management. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-05-23clocksource/drivers/timer-imx-tpm: Switch to SPDX identifierFabio Estevam1-9/+4
Adopt the SPDX license identifier headers to ease license compliance management. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-05-23clocksource/drivers/timer-imx-gpt: Switch to SPDX identifierFabio Estevam1-20/+6
Adopt the SPDX license identifier headers to ease license compliance management. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-05-23clocksource/drivers/timer-imx-gpt: Remove outdated file pathFabio Estevam1-2/+0
imx gpt timer driver has been moved from arch/arm/mach-imx to drivers/clocksource/ a long time ago, so remove the reference to the old file path. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-05-18clocksource/drivers/arc_timer: Add comments about locking while read GFRCEugeniy Paltsev1-0/+14
This came to light in some internal discussions and it is nice to have this documented rather than digging up the PRM (Prog Ref Manual) again. Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Acked-by: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-05-18clocksource/drivers/mips-gic-timer: Add pr_fmt and reword pr_* messagesMatt Redfearn1-8/+10
Several messages from the MIPS GIC driver include the text "GIC", "GIC timer", etc, but the format is not standard. Add a pr_fmt of "mips-gic-timer: " and reword the messages now that they will be prefixed with the driver name. Signed-off-by: Matt Redfearn <matt.redfearn@mips.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-05-18clocksource/drivers/sprd: Fix Kconfig dependencyChunyan Zhang1-1/+3
SPRD arch doesn't select SPRD_TIMER, so this config would not appear even if ARCH_SPRD is set but COMPILE_TEST not. Fix the dependency of this config with SPRD arch, and set a default value for it, also leave other choices for EXPERT. Signed-off-by: Chunyan Zhang <chunyan.zhang@spreadtrum.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2018-05-02ARM: timer-sp: Use of_clk_get_parent_count() instead of open codingGeert Uytterhoeven1-1/+2
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-02 18:01:39 +0000