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2015-03-31clocksource/drivers/sun5i: Add clock notifiersclockevents/4.1Maxime Ripard
The parent clock of the sun5i timer is the AHB clock, which rate might change because of other devices requirements. This is for example the case on the Allwinner A31, where the DMA controller needs a minimum rate higher than the default, that is enforced after the timer driver has probed. Add clock notifiers to make sure we reflect the clock rate changes in the timer rates. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-03-31clocksource/drivers/sun5i: Refactor the current codeMaxime Ripard
Refactor the code in order to remove the global variables and split the clock source and clock events registration in order to ease the addition of the clock notifiers needed to handle the parent clock rate changes. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Conflicts: drivers/clocksource/timer-sun5i.c
2015-03-31clocksource/drivers/sun5i: Use of_io_request_and_mapMaxime Ripard
of_iomap doesn't do a request_mem_region on the memory area defined in the DT it maps. Switch to of_io_request_and_map to make sure we're the only users. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-03-31clocksource/drivers/sun5i: Switch to request_irqMaxime Ripard
The current code uses setup_irq, while it could perfectly use the much simpler request_irq. Switch to that. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Conflicts: drivers/clocksource/timer-sun5i.c
2015-03-31clocksource/drivers/arm_arch_timer: Rename arch_timer_probed to reflect ↵Laurent Pinchart
behaviour The arch_timer_probed function returns whether the given time doesn't need to be probed. This can be the case when the timer has been probed already, but also when it has no corresponding enabled node in DT. Rename the function to arch_timer_needs_probe and invert its return value to better reflect the function's purpose and behaviour. Acked-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-03-31clocksource/drivers/at91: Fix IO endiannessBen Dooks
Fix the use of __raw IO accessor with the readl/writel_relaxed() versions to allow the code to be used on a system running in big endian mode. Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Andrew Victor <linux@maxim.org.za> Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com> Cc: Linux ARM Kernel <linux-arm-kernel@lists.infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: digetx@gmail.com Cc: hdegoede@redhat.com Cc: laurent.pinchart+renesas@ideasonboard.com Cc: maxime.ripard@free-electrons.com Cc: viresh.kumar@linaro.org Link: http://lkml.kernel.org/r/1427746633-9137-7-git-send-email-daniel.lezcano@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-31clocksource/drivers/sun4i-timer: Only register a sched_clock on sun4i and sun5iHans de Goede
sun6i and newer have an arm arch timer which is a better sched_clock source then the sun4i-timer, and sched_clock does not have priorities, so do not register the sun4i-timer sched_clock at all on sun6i and newer. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: ben.dooks@codethink.co.uk Cc: digetx@gmail.com Cc: laurent.pinchart+renesas@ideasonboard.com Cc: linux-arm-kernel@lists.infradead.org Cc: viresh.kumar@linaro.org Link: http://lkml.kernel.org/r/1427746633-9137-8-git-send-email-daniel.lezcano@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-31clocksource/drivers/tegra: Fix IO endiannessDmitry Osipenko
Support big-endian kernel by using endian-aware register access functions. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Thierry Reding <treding@nvidia.com> Cc: ben.dooks@codethink.co.uk Cc: hdegoede@redhat.com Cc: laurent.pinchart+renesas@ideasonboard.com Cc: linux-arm-kernel@lists.infradead.org Cc: maxime.ripard@free-electrons.com Cc: viresh.kumar@linaro.org Link: http://lkml.kernel.org/r/1427746633-9137-9-git-send-email-daniel.lezcano@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-31clocksource/drivers/dw_apb_timers_of: Fix IO endianness causing time jumpsBen Dooks
The dw_apb_timer_of timer is using __raw_readl() to access the timer register, which is causing issues when the system is running in big endian mode. Fix this by using readl_relaxed() which should account for the endian settings. This fixes issues where the time jumps around in the dmesg output due to returnling __le32 values. For an example, these two console lines show time running backwards: [ 49.882572] CPU1: failed to come online [ 43.282457] Brought up 1 CPUs Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Dinh Nguyen <dinguyen@opensource.altera.com> Cc: Linux ARM Kernel <linux-arm-kernel@lists.infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: digetx@gmail.com Cc: hdegoede@redhat.com Cc: laurent.pinchart+renesas@ideasonboard.com Cc: maxime.ripard@free-electrons.com Cc: viresh.kumar@linaro.org Link: http://lkml.kernel.org/r/1427746633-9137-10-git-send-email-daniel.lezcano@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-31clocksource/drivers/efm32: Use CLOCK_EVT_FEAT_PERIODIC for defining featuresViresh Kumar
We have used CLOCK_EVT_MODE_PERIODIC instead of CLOCK_EVT_FEAT_PERIODIC while defining features. Fix it. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de> Cc: ben.dooks@codethink.co.uk Cc: digetx@gmail.com Cc: hdegoede@redhat.com Cc: laurent.pinchart+renesas@ideasonboard.com Cc: linux-arm-kernel@lists.infradead.org Cc: maxime.ripard@free-electrons.com Link: http://lkml.kernel.org/r/1427746633-9137-11-git-send-email-daniel.lezcano@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-31Merge tag 'v4.0-rc6' into timers/core, before applying new patchesIngo Molnar
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-29Linux 4.0-rc6Linus Torvalds
2015-03-29Merge tag 'armsoc-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC fixes from Olof Johansson: "The latest and greatest fixes for ARM platform code. Worth pointing out are: - Lines-wise, largest is a PXA fix for dealing with interrupts on DT that was quite broken. It's still newish code so while we could have held this off, it seemed appropriate to include now - Some GPIO fixes for OMAP platforms added a few lines. This was also fixes for code recently added (this release). - Small OMAP timer fix to behave better with partially upstreamed platforms, which is quite welcome. - Allwinner fixes about operating point control, reducing overclocking in some cases for better stability. plus a handful of other smaller fixes across the map" * tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: arm64: juno: Fix misleading name of UART reference clock ARM: dts: sunxi: Remove overclocked/overvoltaged OPP ARM: dts: sun4i: a10-lime: Override and remove 1008MHz OPP setting ARM: socfpga: dts: fix spi1 interrupt ARM: dts: Fix gpio interrupts for dm816x ARM: dts: dra7: remove ti,hwmod property from pcie phy ARM: OMAP: dmtimer: disable pm runtime on remove ARM: OMAP: dmtimer: check for pm_runtime_get_sync() failure ARM: OMAP2+: Fix socbus family info for AM33xx devices ARM: dts: omap3: Add missing dmas for crypto ARM: dts: rockchip: disable gmac by default in rk3288.dtsi MAINTAINERS: add rockchip regexp to the ARM/Rockchip entry ARM: pxa: fix pxa interrupts handling in DT ARM: pxa: Fix typo in zeus.c ARM: sunxi: Have ARCH_SUNXI select RESET_CONTROLLER for clock driver usage
2015-03-29Merge tag 'sunxi-fixes-for-4.0' of ↵Olof Johansson
https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into fixes Allwinner fixes for 4.0 There's a few fixes to merge for 4.0, one to add a select in the machine Kconfig option to fix a potential build failure, and two fixing cpufreq related issues. * tag 'sunxi-fixes-for-4.0' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux: ARM: dts: sunxi: Remove overclocked/overvoltaged OPP ARM: dts: sun4i: a10-lime: Override and remove 1008MHz OPP setting ARM: sunxi: Have ARCH_SUNXI select RESET_CONTROLLER for clock driver usage Signed-off-by: Olof Johansson <olof@lixom.net>
2015-03-29Merge tag 'fixes-v4.0-rc4' of ↵Olof Johansson
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes Fixes for omaps for the -rc cycle: - Fix a device tree based booting vs legacy booting regression for omap3 crypto hardware by adding the missing DMA channels. - Fix /sys/bus/soc/devices/soc0/family for am33xx devices. - Fix two timer issues that can cause hangs if the timer related hwmod data is missing like it often initially is for new SoCs. - Remove pcie hwmods entry from dts as that causes runtime PM to fail for the PHYs. - A paper bag type dts configuration fix for dm816x GPIO interrupts that I just noticed. This is most of the changes diffstat wise, but as it's a basic feature for connecting devices and things work otherwise, it should be fixed. * tag 'fixes-v4.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: ARM: dts: Fix gpio interrupts for dm816x ARM: dts: dra7: remove ti,hwmod property from pcie phy ARM: OMAP: dmtimer: disable pm runtime on remove ARM: OMAP: dmtimer: check for pm_runtime_get_sync() failure ARM: OMAP2+: Fix socbus family info for AM33xx devices ARM: dts: omap3: Add missing dmas for crypto Signed-off-by: Olof Johansson <olof@lixom.net>
2015-03-29Merge tag 'socfpga_fix_for_v4.0_2' of ↵Olof Johansson
git://git.rocketboards.org/linux-socfpga-next into fixes Late fix for v4.0 on the SoCFPGA platform: - Fix interrupt number for SPI1 interface * tag 'socfpga_fix_for_v4.0_2' of git://git.rocketboards.org/linux-socfpga-next: ARM: socfpga: dts: fix spi1 interrupt Signed-off-by: Olof Johansson <olof@lixom.net>
2015-03-29arm64: juno: Fix misleading name of UART reference clockDave Martin
The UART reference clock speed is 7273.8 kHz, not 72738 kHz. Dots aren't usually used in node names even though ePAPR permits them. However, this can easily be avoided by expressing the frequency in Hz, not kHz. This patch changes the name to refclk7273800hz, reflecting the actual clock speed. Signed-off-by: Dave Martin <Dave.Martin@arm.com> Acked-by: Liviu Dudau <Liviu.Dudau@arm.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2015-03-29Merge tag 'fixes-for-v4.0-rc5' of https://github.com/rjarzmik/linux into fixesOlof Johansson
arm: pxa: fixes for v4.0-rc5 There are only 2 fixes, one for the zeus board about the regulator changes, where a typo prevented the zeus board from having a working can regulator, and one regression triggered by the interrupts IRQ shift of 16 affecting all boards. * tag 'fixes-for-v4.0-rc5' of https://github.com/rjarzmik/linux: ARM: pxa: fix pxa interrupts handling in DT ARM: pxa: Fix typo in zeus.c Signed-off-by: Olof Johansson <olof@lixom.net>
2015-03-28Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fix from Ingo Molnar: "Fix x86 syscall exit code bug that resulted in spurious non-execution of TIF-driven user-return worklets, causing big trouble for things like KVM that rely on user notifiers for correctness of their vcpu model, causing crashes like double faults" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/asm/entry: Check for syscall exit work with IRQs disabled
2015-03-28Merge branch 'timers-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer fixes from Ingo Molnar: "Two clocksource driver fixes, and an idle loop RCU warning fix" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: clocksource/drivers/sun5i: Fix cpufreq interaction with sched_clock() clocksource/drivers: Fix various !CONFIG_HAS_IOMEM build errors timers/tick/broadcast-hrtimer: Fix suspicious RCU usage in idle loop
2015-03-28Merge branch 'sched-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fix from Ingo Molnar: "A single sched/rt corner case fix for RLIMIT_RTIME correctness" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched: Fix RLIMIT_RTTIME when PI-boosting to RT
2015-03-28Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fix from Ingo Molnar: "A perf kernel side fix for a fuzzer triggered lockup" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf: Fix irq_work 'tail' recursion
2015-03-28Merge branch 'locking-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull locking fix from Ingo Molnar: "A module unload lockdep race fix" * 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: lockdep: Fix the module unload key range freeing logic
2015-03-28Merge branch 'parisc-4.0-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux Pull parsic fixes from Helge Deller: "One patch from Mikulas fixes a bug on parisc by artifically incrementing the counter in pmd_free when the kernel tries to free the preallocated pmd. Other than that we now prevent that syscalls gets added without incrementing __NR_Linux_syscalls and fix the initial pmd setup code if a default page size greater than 4k has been selected" * 'parisc-4.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Fix pmd code to depend on PT_NLEVELS value, not on CONFIG_64BIT parisc: mm: don't count preallocated pmds parisc: Add compile-time check when adding new syscalls
2015-03-28Merge git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull kvm ppc bugfixes from Marcelo Tosatti. * git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: PPC: Book3S HV: Fix instruction emulation KVM: PPC: Book3S HV: Endian fix for accessing VPA yield count KVM: PPC: Book3S HV: Fix spinlock/mutex ordering issue in kvmppc_set_lpcr()
2015-03-28Merge tag 'arc-4.0-fixes-part-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc Pull ARC fixes from Vineet Gupta: "We found some issues with signal handling taking down the system. I know its late, but these are important and all marked for stable. ARC signal handling related fixes uncovered during recent testing of NPTL tools" * tag 'arc-4.0-fixes-part-2' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: ARC: signal handling robustify ARC: SA_SIGINFO ucontext regs off-by-one
2015-03-28Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security Pull selinux bugfix from James Morris. Fix broken return value. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: selinux: fix sel_write_enforce broken return value
2015-03-27Merge git://www.linux-watchdog.org/linux-watchdogLinus Torvalds
Pull watchdog fixes from Wim Van Sebroeck: - mtk_wdt: signedness bug in mtk_wdt_start() - imgpdc: Fix NULL pointer dereference during probe and fix the default heartbeat * git://www.linux-watchdog.org/linux-watchdog: watchdog: imgpdc: Fix default heartbeat watchdog: imgpdc: Fix probe NULL pointer dereference watchdog: mtk_wdt: signedness bug in mtk_wdt_start()
2015-03-27Merge tag 'sound-4.0-rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "Three trivial oneliner fixes for HD-audio. Two are device-specific quirks while one is a generic fix for recent Realtek codecs" * tag 'sound-4.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: hda - Add one more node in the EAPD supporting candidate list ALSA: hda_intel: apply the Seperate stream_tag for Sunrise Point ALSA: hda - Add dock support for Thinkpad T450s (17aa:5036)
2015-03-27Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/selinux ↵James Morris
into for-linus
2015-03-27clockevents: Don't validate dev->mode against CLOCK_EVT_MODE_UNUSED for new ↵Viresh Kumar
interface It was a requirement in the legacy interface that drivers must initialize ->mode field to 'CLOCK_EVT_MODE_UNUSED'. This field isn't used anymore by the new interface and so should be only checked for the legacy interface. Probably it can be dropped as well as core doesn't rely on it anymore, but lets keep it to support legacy interface. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Kevin Hilman <khilman@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Preeti U Murthy <preeti@linux.vnet.ibm.com> Cc: linaro-kernel@lists.linaro.org Cc: linaro-networking@linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/c6604fa1a77fe1fc8dcab87769857228fb1dadd5.1425037853.git.viresh.kumar@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-27clockevents: Manage device's state separately for the coreViresh Kumar
'enum clock_event_mode' is used for two purposes today: - to pass mode to the driver of clockevent device::set_mode(). - for managing state of the device for clockevents core. For supporting new modes/states we have moved away from the legacy set_mode() callback to new per-mode/state callbacks. New modes/states shouldn't be exposed to the legacy (now OBSOLOTE) callbacks and so we shouldn't add new states to 'enum clock_event_mode'. Lets have separate enums for the two use cases mentioned above. Keep using the earlier enum for legacy set_mode() callback and mark it OBSOLETE. And add another enum to clearly specify the possible states of a clockevent device. This also renames the newly added per-mode callbacks to reflect state changes. We haven't got rid of 'mode' member of 'struct clock_event_device' as it is used by some of the clockevent drivers and it would automatically die down once we migrate those drivers to the new interface. It ('mode') is only updated now for the drivers using the legacy interface. Suggested-by: Peter Zijlstra <peterz@infradead.org> Suggested-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Kevin Hilman <khilman@linaro.org> Cc: Preeti U Murthy <preeti@linux.vnet.ibm.com> Cc: linaro-kernel@lists.linaro.org Cc: linaro-networking@linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/b6b0143a8a57bd58352ad35e08c25424c879c0cb.1425037853.git.viresh.kumar@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-27clockevents: Handle tick device's resume separatelyViresh Kumar
Upcoming patch will redefine possible states of a clockevent device. The RESUME mode is a special case only for tick's clockevent devices. In future it can be replaced by ->resume() callback already available for clockevent devices. Lets handle it separately so that clockevents_set_mode() only handles states valid across all devices. This also renames set_mode_resume() to tick_resume() to make it more explicit. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Kevin Hilman <khilman@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Preeti U Murthy <preeti@linux.vnet.ibm.com> Cc: linaro-kernel@lists.linaro.org Cc: linaro-networking@linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/c1b0112410870f49e7bf06958e1483eac6c15e20.1425037853.git.viresh.kumar@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-27time: Add ktime_get_tai_ns()Peter Zijlstra
Because it was the only clock for which we didn't have a _ns() accessor yet. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: John Stultz <john.stultz@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-27time: Introduce tk_fast_rawPeter Zijlstra
Add the NMI safe CLOCK_MONOTONIC_RAW accessor.. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: John Stultz <john.stultz@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20150319093400.562746929@infradead.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-27time: Parametrize all tk_fast_mono usersPeter Zijlstra
In preparation for more tk_fast instances, remove all hard-coded tk_fast_mono references. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: John Stultz <john.stultz@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20150319093400.484279927@infradead.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-27time: Add timerkeeper::tkr_rawPeter Zijlstra
Introduce tkr_raw and make use of it. base_raw -> tkr_raw.base clock->{mult,shift} -> tkr_raw.{mult.shift} Kill timekeeping_get_ns_raw() in favour of timekeeping_get_ns(&tkr_raw), this removes all mono_raw special casing. Duplicate the updates to tkr_mono.cycle_last into tkr_raw.cycle_last, both need the same value. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: John Stultz <john.stultz@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20150319093400.422589590@infradead.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-27time: Rename timekeeper::tkr to timekeeper::tkr_monoPeter Zijlstra
In preparation of adding another tkr field, rename this one to tkr_mono. Also rename tk_read_base::base_mono to tk_read_base::base, since the structure is not specific to CLOCK_MONOTONIC and the mono name got added to the tk_read_base instance. Lots of trivial churn. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: John Stultz <john.stultz@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20150319093400.344679419@infradead.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-27watchdog: imgpdc: Fix default heartbeatJames Hogan
The IMG PDC watchdog driver heartbeat module parameter has no default so it is initialised to zero. This results in the following warning during probe: imgpdc-wdt 2006000.wdt: Initial timeout out of range! setting max timeout The module parameter description implies that the default value should be PDC_WDT_DEF_TIMEOUT, which isn't yet used, so initialise it to that. Also tweak the heartbeat module parameter description for consistency. Fixes: 93937669e9b5 ("watchdog: ImgTec PDC Watchdog Timer Driver") Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Ezequiel Garcia <ezequiel.garcia@imgtec.com> Cc: Naidu Tellapati <Naidu.Tellapati@imgtec.com> Cc: Jude Abraham <Jude.Abraham@imgtec.com> Cc: linux-watchdog@vger.kernel.org Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2015-03-27watchdog: imgpdc: Fix probe NULL pointer dereferenceJames Hogan
The IMG PDC watchdog probe function calls pdc_wdt_stop() prior to watchdog_set_drvdata(), causing a NULL pointer dereference when pdc_wdt_stop() retrieves the struct pdc_wdt_dev pointer using watchdog_get_drvdata() and reads the register base address through it. Fix by moving the watchdog_set_drvdata() call earlier, to where various other pdc_wdt->wdt_dev fields are initialised. Fixes: 93937669e9b5 ("watchdog: ImgTec PDC Watchdog Timer Driver") Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Ezequiel Garcia <ezequiel.garcia@imgtec.com> Cc: Naidu Tellapati <Naidu.Tellapati@imgtec.com> Cc: Jude Abraham <Jude.Abraham@imgtec.com> Cc: linux-watchdog@vger.kernel.org Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2015-03-27watchdog: mtk_wdt: signedness bug in mtk_wdt_start()Dan Carpenter
"ret" should be signed for the error handling to work correctly. This doesn't matter much in real life since mtk_wdt_set_timeout() always succeeds. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2015-03-27timers, sched/clock: Clean up the code a bitIngo Molnar
Trivial cleanups, to improve the readability of the generic sched_clock() code: - Improve and standardize comments - Standardize the coding style - Use vertical spacing where appropriate - etc. No code changed: md5: 19a053b31e0c54feaeff1492012b019a sched_clock.o.before.asm 19a053b31e0c54feaeff1492012b019a sched_clock.o.after.asm Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Daniel Thompson <daniel.thompson@linaro.org> Cc: John Stultz <john.stultz@linaro.org> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-27timers, sched/clock: Avoid deadlock during read from NMIDaniel Thompson
Currently it is possible for an NMI (or FIQ on ARM) to come in and read sched_clock() whilst update_sched_clock() has locked the seqcount for writing. This results in the NMI handler locking up when it calls raw_read_seqcount_begin(). This patch fixes the NMI safety issues by providing banked clock data. This is a similar approach to the one used in Thomas Gleixner's 4396e058c52e("timekeeping: Provide fast and NMI safe access to CLOCK_MONOTONIC"). Suggested-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: John Stultz <john.stultz@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Link: http://lkml.kernel.org/r/1427397806-20889-6-git-send-email-john.stultz@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-27timers, sched/clock: Remove redundant notrace from update functionDaniel Thompson
Currently update_sched_clock() is marked as notrace but this function is not called by ftrace. This is trivially fixed by removing the mark up. Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: John Stultz <john.stultz@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Link: http://lkml.kernel.org/r/1427397806-20889-5-git-send-email-john.stultz@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-27timers, sched/clock: Remove suspend from clock_read_data()Daniel Thompson
Currently cd.read_data.suspended is read by the hotpath function sched_clock(). This variable need not be accessed on the hotpath. In fact, once it is removed, we can remove the conditional branches from sched_clock() and install a dummy read_sched_clock function to suspend the clock. The new master copy of the function pointer (actual_read_sched_clock) is introduced and is used for all reads of the clock hardware except those within sched_clock itself. Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: John Stultz <john.stultz@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Link: http://lkml.kernel.org/r/1427397806-20889-4-git-send-email-john.stultz@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-27timers, sched/clock: Optimize cache line usageDaniel Thompson
Currently sched_clock(), a very hot code path, is not optimized to minimise its cache profile. In particular: 1. cd is not ____cacheline_aligned, 2. struct clock_data does not distinguish between hotpath and coldpath data, reducing locality of reference in the hotpath, 3. Some hotpath data is missing from struct clock_data and is marked __read_mostly (which more or less guarantees it will not share a cache line with cd). This patch corrects these problems by extracting all hotpath data into a separate structure and using ____cacheline_aligned to ensure the hotpath uses a single (64 byte) cache line. Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: John Stultz <john.stultz@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Link: http://lkml.kernel.org/r/1427397806-20889-3-git-send-email-john.stultz@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-27timers, sched/clock: Match scope of read and write seqcountsDaniel Thompson
Currently the scope of the raw_write_seqcount_begin/end() in sched_clock_register() far exceeds the scope of the read section in sched_clock(). This gives the impression of safety during cursory review but achieves little. Note that this is likely to be a latent issue at present because sched_clock_register() is typically called before we enable interrupts, however the issue does risk bugs being needlessly introduced as the code evolves. This patch fixes the problem by increasing the scope of the read locking performed by sched_clock() to cover all data modified by sched_clock_register. We also improve clarity by moving writes to struct clock_data that do not impact sched_clock() outside of the critical section. Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> [ Reworked it slightly to apply to tip/timers/core] Signed-off-by: John Stultz <john.stultz@linaro.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Link: http://lkml.kernel.org/r/1427397806-20889-2-git-send-email-john.stultz@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-26Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds
Pull drm refcounting fixes from Dave Airlie: "Here is the complete set of i915 bug/warn/refcounting fixes" * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm/i915: Fixup legacy plane->crtc link for initial fb config drm/i915: Fix atomic state when reusing the firmware fb drm/i915: Keep ring->active_list and ring->requests_list consistent drm/i915: Don't try to reference the fb in get_initial_plane_config() drm: Fixup racy refcounting in plane_force_disable
2015-03-26Merge tag 'dm-4.0-fix-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper fix from Mike Snitzer: "Fix DM core device cleanup regression -- due to a latent race that was exposed by the bdi changes that were introduced during the 4.0 merge" * tag 'dm-4.0-fix-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm: fix add_disk() NULL pointer due to race with free_dev()
2015-03-26Merge tag 'linux-kselftest-4.0-rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kselftest fix from Shuah Khan. * tag 'linux-kselftest-4.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests: Fix build failures when invoked from kselftest target
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-28 22:16:17 +0000