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* Revert "clocksource: Load the ACPI PM clocksource asynchronously"Thomas Gleixner2012-04-121-16/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit b519508298e0292e1771eecf14aaf67755adc39d. The reason for this revert is that making the frequency verification preemptible and interruptible is not working reliably. Michaels machine failed to use PM-timer with the message: PM-Timer running at invalid rate: 113% of normal - aborting. That's not a surprise as the frequency verification does rely on interrupts being disabled. With a async scheduled thread there is no guarantee to achieve the same result. Also some driver might fiddle with the CTC channel 2 during the verification period, which makes the result even more random and unpredictable. This can be solved by using the same mechanism as we use in the deferred TSC validation code, but that only will work if we verified a working HPET _BEFORE_ trying to do the PM-Timer lazy validation. So for now reverting is the safe option. Bisected-by: Michael Witten <mfwitten@gmail.com> Cc: Arjan van de Ven <arjanvandeven@gmail.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: John Stultz <johnstul@us.ibm.com> Cc: Len Brown <lenb@kernel.org> LKML-Reference: <alpine.LFD.2.02.1204112303270.2542@ionos> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-armLinus Torvalds2012-03-291-1/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull more ARM updates from Russell King. This got a fair number of conflicts with the <asm/system.h> split, but also with some other sparse-irq and header file include cleanups. They all looked pretty trivial, though. * 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (59 commits) ARM: fix Kconfig warning for HAVE_BPF_JIT ARM: 7361/1: provide XIP_VIRT_ADDR for no-MMU builds ARM: 7349/1: integrator: convert to sparse irqs ARM: 7259/3: net: JIT compiler for packet filters ARM: 7334/1: add jump label support ARM: 7333/2: jump label: detect %c support for ARM ARM: 7338/1: add support for early console output via semihosting ARM: use set_current_blocked() and block_sigmask() ARM: exec: remove redundant set_fs(USER_DS) ARM: 7332/1: extract out code patch function from kprobes ARM: 7331/1: extract out insn generation code from ftrace ARM: 7330/1: ftrace: use canonical Thumb-2 wide instruction format ARM: 7351/1: ftrace: remove useless memory checks ARM: 7316/1: kexec: EOI active and mask all interrupts in kexec crash path ARM: Versatile Express: add NO_IOPORT ARM: get rid of asm/irq.h in asm/prom.h ARM: 7319/1: Print debug info for SIGBUS in user faults ARM: 7318/1: gic: refactor irq_start assignment ARM: 7317/1: irq: avoid NULL check in for_each_irq_desc loop ARM: 7315/1: perf: add support for the Cortex-A7 PMU ...
| * Merge branch 'devel-stable' into for-linusRussell King2012-03-271-1/+0
| | | | | | | | | | | | | | | | | | Conflicts: arch/arm/Kconfig.debug arch/arm/plat-versatile/Kconfig Merge fixes: arch/arm/mach-integrator/Kconfig drivers/clocksource/Kconfig
* | Merge tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds2012-03-271-28/+62
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull "ARM: device tree work" from Arnd Bergmann: "Most of these patches convert code from using static platform data to describing the hardware in the device tree. This is only the first half of the changes for v3.4 because a lot of patches for this topic came in the last week before the merge window. Signed-off-by: Arnd Bergmann <arnd@arndb.de>" Fix up trivial conflicts in arch/arm/mach-vexpress/{Kconfig,core.h} * tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (86 commits) Document: devicetree: add OF documents for arch-mmp ARM: dts: append DTS file of pxa168 ARM: mmp: append OF support on pxa168 ARM: mmp: enable rtc clk in pxa168 i2c: pxa: add OF support serial: pxa: add OF support arm/dts: mt_ventoux: very basic support for TeeJet Mt.Ventoux board ARM: OMAP2+: Remove extra ifdefs for board-generic ARM: OMAP2+: Fix build error when only ARCH_OMAP2/3 or 4 is selected ASoC: DT: Add digital microphone binding to PAZ00 board. ARM: dt: Add ARM PMU to tegra*.dtsi ARM: at91: at91sam9x5cm/dt: add leds support ARM: at91: usb_a9g20/dt: add gpio-keys support ARM: at91: at91sam9m10g45ek/dt: add gpio-keys support ARM: at91: at91sam9m10g45ek/dt: add leds support ARM: at91: usb_a9g20/dt: add leds support ARM: at91/pio: add new PIO3 features ARM: at91: add sam9_smc.o to at91sam9x5 build ARM: at91/tc/clocksource: Add 32 bit variant to Timer Counter ARM: at91/tc: add device tree support to atmel_tclib ...
| * | ARM: at91/tc/clocksource: Add 32 bit variant to Timer CounterNicolas Ferre2012-03-011-28/+62
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some SoC have a 32 bit variant of Timer Counter Blocks. We do not need the chaining of two 16 bit counters anymore for them. The SoC nature is deduced from the device tree "compatible" string. For non-device-tree configurations, backward compatibility is maintained by using the default 16 bit counter configuration. This patch addresses both the atmel_tclib and its user: tcb_clksrc clocksource. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Grant Likely <grant.likely@secretlab.ca>
* | Merge tag 'pm-for-3.4' of ↵Linus Torvalds2012-03-213-0/+12
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management updates for 3.4 from Rafael Wysocki: "Assorted extensions and fixes including: * Introduction of early/late suspend/hibernation device callbacks. * Generic PM domains extensions and fixes. * devfreq updates from Axel Lin and MyungJoo Ham. * Device PM QoS updates. * Fixes of concurrency problems with wakeup sources. * System suspend and hibernation fixes." * tag 'pm-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (43 commits) PM / Domains: Check domain status during hibernation restore of devices PM / devfreq: add relation of recommended frequency. PM / shmobile: Make MTU2 driver use pm_genpd_dev_always_on() PM / shmobile: Make CMT driver use pm_genpd_dev_always_on() PM / shmobile: Make TMU driver use pm_genpd_dev_always_on() PM / Domains: Introduce "always on" device flag PM / Domains: Fix hibernation restore of devices, v2 PM / Domains: Fix handling of wakeup devices during system resume sh_mmcif / PM: Use PM QoS latency constraint tmio_mmc / PM: Use PM QoS latency constraint PM / QoS: Make it possible to expose PM QoS latency constraints PM / Sleep: JBD and JBD2 missing set_freezable() PM / Domains: Fix include for PM_GENERIC_DOMAINS=n case PM / Freezer: Remove references to TIF_FREEZE in comments PM / Sleep: Add more wakeup source initialization routines PM / Hibernate: Enable usermodehelpers in hibernate() error path PM / Sleep: Make __pm_stay_awake() delete wakeup source timers PM / Sleep: Fix race conditions related to wakeup source timer function PM / Sleep: Fix possible infinite loop during wakeup source destruction PM / Hibernate: print physical addresses consistently with other parts of kernel ...
| * | PM / shmobile: Make MTU2 driver use pm_genpd_dev_always_on()Rafael J. Wysocki2012-03-161-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make the MTU2 clocksource driver mark its device as "always on" using pm_genpd_dev_always_on() to protect it from surprise power removals. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Tested-by: Simon Horman <horms@verge.net.au> Acked-by: Paul Mundt <lethal@linux-sh.org> Cc: stable@vger.kernel.org
| * | PM / shmobile: Make CMT driver use pm_genpd_dev_always_on()Rafael J. Wysocki2012-03-161-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make the CMT clocksource driver mark its device as "always on" using pm_genpd_dev_always_on() to protect it from surprise power removals. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Tested-by: Simon Horman <horms@verge.net.au> Acked-by: Paul Mundt <lethal@linux-sh.org> Cc: stable@vger.kernel.org
| * | PM / shmobile: Make TMU driver use pm_genpd_dev_always_on()Rafael J. Wysocki2012-03-161-0/+4
| |/ | | | | | | | | | | | | | | | | | | | | | | | | Make the TMU clocksource driver mark its device as "always on" using pm_genpd_dev_always_on() to protect it from surprise power removals and make sh7372_add_standard_devices() add TMU devices on sh7372 to the A4R power domain so that their "always on" flags are taken into account as appropriate. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Tested-by: Simon Horman <horms@verge.net.au> Acked-by: Paul Mundt <lethal@linux-sh.org> Cc: stable@vger.kernel.org
* | cs5535-clockevt: Allow the MFGPT IRQ to be sharedJens Rottmann2012-03-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Shared timer IRQs are not a good solution, however the Geode platform has no APIC, IRQs are a scarce resource and there is no technical reason to forbid it rightaway. Increased latencies and overhead due to sharing are still better than a driver refusing to load. Signed-off-by: Jens Rottmann <JRottmann@LiPPERTEmbedded.de> Acked-by: Andres Salomon <dilinger@queued.net> Cc: John Stultz <john.stultz@linaro.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | cs5535-clockevt: Don't ignore MFGPT on SMP-capable kernelsJens Rottmann2012-03-061-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On SMP-capable kernels (e.g. generic distro kernel) the cs5535-clockevt driver loads but is not actually used. Setting cpumask to cpu_all_mask works for UP-only kernels, but if compiled for SMP - though still running on the same UP hardware - kernel/time/tick-common.c:tick_check_new_device() reads this as "non-cpu-local" and silently ignores the device. If we leave cpumask unset clockevents_register_device() will initialize it and the cs5535-clockevt driver will be used no matter how the kernel was compiled. Should anyone ever manage to stick a CS553x in an SMP system (is this even possible?) then a warning will be printed. This is fine as the cs5535-clockevt driver was never written/tested for SMP. If bisecting led you here this patch may have exposed a pre-existing MFGPT problem. Configure for UP-only and re-check. Signed-off-by: Jens Rottmann <JRottmann@LiPPERTEmbedded.de> Acked-by: Andres Salomon <dilinger@queued.net> Cc: John Stultz <john.stultz@linaro.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | clocksource: scx200_hrt: Fix the buildIngo Molnar2012-02-221-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit: 12d6d41276de: clocksource: scx200_hrt: Convert scx200 to use clocksource_register_hz Breaks the build on x86-32: drivers/clocksource/scx200_hrt.c: In function ‘init_hrt_clocksource’: drivers/clocksource/scx200_hrt.c:95:0: error: unterminated argument list invoking macro "pr_info" drivers/clocksource/scx200_hrt.c:84:2: error: ‘pr_info’ undeclared (first use in this function) It could not possibly have been build tested, because it had this mismerge: pr_info("enabling scx200 high-res timer (%s MHz +%d ppm)\n", printk(KERN_INFO "enabling scx200 high-res timer (%s MHz +%d ppm)\n", mhz27 ? "27":"1", ppm); Cc: Jim Cromie <jim.cromie@gmail.com> Cc: John Stultz <john.stultz@linaro.org> Link: http://lkml.kernel.org/n/tip-jceb26fns5w7tv8edlivhxpa@git.kernel.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | clocksource: Load the ACPI PM clocksource asynchronouslyArjan van de Ven2012-02-011-8/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ACPI clocksource takes quite some time to initialize, and this increases the boot time of the kernel for a double digit percentage. This while almost all modern systems will be using the HPET already anyway. This patch turns the clocksource loading into an asynchronous operation; which means it won't hold up the boot while still becoming available normally. To make this work well, an udelay() had to be turned into an usleep_range() so that on UP systems, we yield the CPU to regular boot tasks instead of spinning. CC: John Stultz <johnstul@us.ibm.com> CC: Thomas Gleixner <tglx@linutronix.de> CC: Len Brown <lenb@kernel.org> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: John Stultz <john.stultz@linaro.org>
* | clocksource: scx200_hrt: Convert scx200 to use clocksource_register_hzJohn Stultz2012-02-011-13/+7
| | | | | | | | | | | | | | | | | | Converts the scx200 clocksource to using clocksource_register_hz. CC: Jim Cromie <jim.cromie@gmail.com> Tested-by: Jim Cromie <jim.cromie@gmail.com> Acked-by: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: John Stultz <john.stultz@linaro.org>
* | clocksource: dbx500: convert to clocksource_register_hz()Yong Zhang2012-02-011-4/+1
| | | | | | | | | | | | | | | | | | | | Convert clocksource_dbx500_prcmu to use clocksource_register_hz. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Mattias Wallin <mattias.wallin@stericsson.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Yong Zhang <yong.zhang0@gmail.com> Signed-off-by: John Stultz <john.stultz@linaro.org>
* | clocksource: scx200_hrt: use pr_<level> instead of printkJim Cromie2012-02-011-2/+2
| | | | | | | | | | | | | | | | Switch from printk to using pr_<level>. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> [added commit msg & tweaked subject -jstultz] Signed-off-by: John Stultz <john.stultz@linaro.org>
* | clocksource: cyclone: Add missing iounmapJulia Lawall2012-01-261-1/+1
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add missing iounmap in error handling code, in a case where the function already preforms iounmap on some other execution path. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression e; statement S,S1; int ret; @@ e = \(ioremap\|ioremap_nocache\)(...) ... when != iounmap(e) if (<+...e...+>) S ... when any when != iounmap(e) *if (...) { ... when != iounmap(e) return ...; } ... when any iounmap(e); // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> [fixed up subject -jstultz] Signed-off-by: John Stultz <john.stultz@linaro.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2012-01-061-13/+3
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm * 'for-linus' of git://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm: (207 commits) ARM: 7267/1: Remove BUILD_BUG_ON from asm/bug.h ARM: 7269/1: mach-sa1100: fix sched_clock breakage ARM: 7198/1: arm/imx6: add restart support for imx6q ARM: restart: remove the now empty arch_reset() ARM: restart: remove comments about adding code to arch_reset() ARM: restart: lpc32xx & u300: remove unnecessary printk ARM: restart: plat-samsung: remove plat/reset.h and s5p_reset_hook ARM: restart: w90x900: use new restart hook ARM: restart: Versatile Express: use new restart hook ARM: restart: versatile: use new restart hook ARM: restart: u300: use new restart hook ARM: restart: tegra: use new restart hook ARM: restart: spear: use new restart hook ARM: restart: shark: use new restart hook ARM: restart: sa1100: use new restart hook ARM: 7252/1: restart: S5PV210: use new restart hook ARM: 7251/1: restart: S5PC100: use new restart hook ARM: 7250/1: restart: S5P64X0: use new restart hook ARM: 7266/1: restart: S3C64XX: use new restart hook ARM: 7265/1: restart: S3C24XX: use new restart hook ... Fix up trivial conflict in arch/arm/mm/init.c due to removal of memblock_init() clashing with the movement of the sorting of the meminfo array.
| * ARM: 7261/1: clocksource/ux500-prcmu: fix sched_clock breakageLinus Walleij2012-01-031-13/+3
| | | | | | | | | | | | | | | | | | | | | | | | commit 2f0778afac79bd8d226225556858a636931eeabc adding runtime-selectable sched_clock() forgot to patch this driver down in drivers/clocksource, this patch fixes the problem. Reported-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | Merge branch 'fortglx/3.3/tip/timers/core' of ↵Thomas Gleixner2011-12-053-7/+5
|\ \ | |/ |/| | | git://git.linaro.org/people/jstultz/linux into timers/core
| * clocksource: Convert tcb_clksrc to use clocksource_register_hz/khzJohn Stultz2011-11-211-3/+1
| | | | | | | | | | | | | | | | | | Convert tcb_clksrc to use clocksource_register_hz. CC: Nikolaus Voss <n.voss@weinmann.de> CC: Thomas Gleixner <tglx@linutronix.de> Acked-by: Nikolaus Voss <n.voss@weinmann.de> Signed-off-by: John Stultz <john.stultz@linaro.org>
| * time: x86: Replace LATCH with PIT_LATCH in i8253 clocksource driverDeepak Saxena2011-11-211-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The i8253 clockevent & clocksource driver uses PIT_LATCH except for two cases where it uses LATCH: 1) /* VIA686a test code... reset the latch if count > max + 1 */ if (count > LATCH) { LATCH is based on CLOCK_TICK_RATE which is defined as PIT_TICK_RATE on x86 so this should just be the later. 2) ... switch (mode) { case CLOCK_EVT_MODE_PERIODIC: /* binary, mode 2, LSB/MSB, ch 0 */ outb_p(0x34, PIT_MODE); outb_p(LATCH & 0xff , PIT_CH0); /* LSB */ outb_p(LATCH >> 8 , PIT_CH0); /* MSB */ ... MIPS and ARM are the only other arches that use this driver. In the MIPS case CLOCK_TICK_RATE is defined as the same value as PIT_TICK_RATE. For ARM, the only machine that uses it is Footbridge which has a totally bogus CLOCK_TICK_RATE according to the comments. Furthermore, the clockevent_i8253_init() initializes the clockevent with PIT_TIC_RATE, so there's no reason to use the generic LATCH. This is part of work to remove and depecrate the global CLOCK_TICK_RATE symbol. Signed-off-by: Deepak Saxena <dsaxena@linaro.org> Signed-off-by: John Stultz <john.stultz@linaro.org>
| * time: x86: Remove CLOCK_TICK_RATE from acpi_pm clocksource driverDeepak Saxena2011-11-211-1/+1
| | | | | | | | | | | | | | | | | | The acpi_pm clocksource driver uses CLOCK_TICK_RATE which is defined as PIT_TICK_RATE on x86. This patch cleans it up to just use the later so that CLOCK_TICK_RATE can be depecrated. Signed-off-by: Deepak Saxena <dsaxena@linaro.org> Signed-off-by: John Stultz <john.stultz@linaro.org>
* | Merge branch 'modsplit-Oct31_2011' of ↵Linus Torvalds2011-11-063-0/+3
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux * 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: (230 commits) Revert "tracing: Include module.h in define_trace.h" irq: don't put module.h into irq.h for tracking irqgen modules. bluetooth: macroize two small inlines to avoid module.h ip_vs.h: fix implicit use of module_get/module_put from module.h nf_conntrack.h: fix up fallout from implicit moduleparam.h presence include: replace linux/module.h with "struct module" wherever possible include: convert various register fcns to macros to avoid include chaining crypto.h: remove unused crypto_tfm_alg_modname() inline uwb.h: fix implicit use of asm/page.h for PAGE_SIZE pm_runtime.h: explicitly requires notifier.h linux/dmaengine.h: fix implicit use of bitmap.h and asm/page.h miscdevice.h: fix up implicit use of lists and types stop_machine.h: fix implicit use of smp.h for smp_processor_id of: fix implicit use of errno.h in include/linux/of.h of_platform.h: delete needless include <linux/module.h> acpi: remove module.h include from platform/aclinux.h miscdevice.h: delete unnecessary inclusion of module.h device_cgroup.h: delete needless include <linux/module.h> net: sch_generic remove redundant use of <linux/module.h> net: inet_timewait_sock doesnt need <linux/module.h> ... Fix up trivial conflicts (other header files, and removal of the ab3550 mfd driver) in - drivers/media/dvb/frontends/dibx000_common.c - drivers/media/video/{mt9m111.c,ov6650.c} - drivers/mfd/ab3550-core.c - include/linux/dmaengine.h
| * | drivers/clocksource: Add module.h to those who were using it implicitlyPaul Gortmaker2011-10-313-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | A pending cleanup will mean that module.h won't be implicitly everywhere anymore. Make sure the modular drivers in clocksource are actually calling out for <module.h> explicitly in advance. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* | | Merge branch 'next/timer' of git://git.linaro.org/people/arnd/arm-socLinus Torvalds2011-11-013-0/+122
|\ \ \ | |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'next/timer' of git://git.linaro.org/people/arnd/arm-soc: clocksource: fixup ux500 build problems ARM: omap: use __devexit_p in dmtimer driver ARM: ux500: Reprogram timers upon resume ARM: plat-nomadik: timer: Export reset functions ARM: plat-nomadik: timer: Add support for periodic timers ARM: ux500: Move timer code to separate file ARM: ux500: add support for clocksource DBX500 PRCMU clocksource: add DBX500 PRCMU Timer support ARM: plat-nomadik: MTU sched_clock as an option ARM: OMAP: dmtimer: add error handling to export APIs ARM: OMAP: dmtimer: low-power mode support ARM: OMAP: dmtimer: skip reserved timers ARM: OMAP: dmtimer: pm_runtime support ARM: OMAP: dmtimer: switch-over to platform device driver ARM: OMAP: dmtimer: platform driver ARM: OMAP2+: dmtimer: convert to platform devices ARM: OMAP1: dmtimer: conversion to platform devices ARM: OMAP2+: dmtimer: add device names to flck nodes ARM: OMAP: Add support for dmtimer v2 ip
| * | clocksource: fixup ux500 build problemsLinus Walleij2011-10-031-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Based on a patch from Arnd Bergmann this fixes up the build problem of assigning a non-existing global when the ux500 PRCMU timer is not linked in by passing its base address to the init function. We also add a missing <linux/errno.h> inclusion and staticize the dummy function. Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| * | clocksource: add DBX500 PRCMU Timer supportMattias Wallin2011-09-223-0/+120
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the DBX500 PRCMU Timer driver as a clocksource and as sched_clock. Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Mattias Wallin <mattias.wallin@stericsson.com> Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* | | Merge branch 'timers-core-for-linus' of ↵Linus Torvalds2011-10-261-1/+1
|\ \ \ | |/ / |/| / | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits) time, s390: Get rid of compile warning dw_apb_timer: constify clocksource name time: Cleanup old CONFIG_GENERIC_TIME references that snuck in time: Change jiffies_to_clock_t() argument type to unsigned long alarmtimers: Fix error handling clocksource: Make watchdog reset lockless posix-cpu-timers: Cure SMP accounting oddities s390: Use direct ktime path for s390 clockevent device clockevents: Add direct ktime programming function clockevents: Make minimum delay adjustments configurable nohz: Remove "Switched to NOHz mode" debugging messages proc: Consider NO_HZ when printing idle and iowait times nohz: Make idle/iowait counter update conditional nohz: Fix update_ts_time_stat idle accounting cputime: Clean up cputime_to_usecs and usecs_to_cputime macros alarmtimers: Rework RTC device selection using class interface alarmtimers: Add try_to_cancel functionality alarmtimers: Add more refined alarm state tracking alarmtimers: Remove period from alarm structure alarmtimers: Remove interval cap limit hack ...
| * dw_apb_timer: constify clocksource nameJamie Iles2011-10-041-1/+1
| | | | | | | | | | | | | | | | The clocksource name should be const for correctness. Cc: John Stultz <johnstul@us.ibm.com> Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: John Stultz <john.stultz@linaro.org>
* | Merge branch 'common/core' into sh-latestPaul Mundt2011-08-081-2/+32
|\ \ | |/ |/|
| * clocksource: sh_cmt: wait for CMCNT on init V2Magnus Damm2011-07-211-2/+32
| | | | | | | | | | | | | | | | | | | | | | Add code to the CMT driver to wait for CMCNT V2. This to let the register value settle before starting the timer channel. Makes the driver more robust. Needed for CMT2 on sh7372 and certain CMT channels on sh73a0. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | Merge branch 'timers-clocksource-for-linus' of ↵Linus Torvalds2011-07-233-0/+405
|\ \ | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-clocksource-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: clocksource: apb: Share APB timer code with other platforms
| * | clocksource: apb: Share APB timer code with other platformsJamie Iles2011-06-273-0/+405
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The APB timers are an IP block from Synopsys (DesignWare APB timers) and are also found in other systems including ARM SoC's. This patch adds functions for creating clock_event_devices and clocksources from APB timers but does not do the resource allocation. This is handled in a higher layer to allow the timers to be created from multiple methods such as platform_devices. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Jacob Pan <jacob.jun.pan@linux.intel.com> Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: John Stultz <john.stultz@linaro.org>
* | i8253: Create common clockevent implementationThomas Gleixner2011-07-012-8/+98
| | | | | | | | | | | | | | | | | | | | | | | | | | | | arm, mips and x86 implement i8253 based clockevents. All the same code copied. Create a common implementation in drivers/clocksource/i8253.c. About time to rename drivers/clocksource/ to something else. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Russell King <linux@arm.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: John Stultz <john.stultz@linaro.org> Link: http://lkml.kernel.org/r/20110609130621.921710458@linutronix.de
* | i8253: Export i8253_lock unconditionallyThomas Gleixner2011-06-101-2/+0
| | | | | | | | | | | | | | We don't want to add endless selects and module ifdefs. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | i8253: Remove I8253_LOCK configThomas Gleixner2011-06-091-0/+2
| | | | | | | | | | | | | | | | | | Now that all extra ifdeffed implementations are gone, depend the lock export on PCSPKR_PLATFORM Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Russell King <linux@arm.linux.org.uk>
* | i8253: Consolidate all kernel definitions of i8253_lockRalf Baechle2011-06-093-2/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Move them to drivers/clocksource/i8253.c and remove the implementations in arch/ [ tglx: Avoid the extra file in lib - folded arch patches in. The export will become conditional in a later step ] Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Link: http://lkml.kernel.org/r/20110601180610.221426078@duck.linux-mips.net Cc: Russell King <linux@arm.linux.org.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | i8253: Create linux/i8253.h and use it in all 8253 related filesRalf Baechle2011-06-091-1/+1
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Link: http://lkml.kernel.org/r/20110601180610.054254048@duck.linux-mips.net Signed-off-by: Thomas Gleixner <tglx@linutronix.de> arch/arm/mach-footbridge/isa-timer.c | 2 +- arch/mips/cobalt/time.c | 2 +- arch/mips/jazz/irq.c | 2 +- arch/mips/kernel/i8253.c | 2 +- arch/mips/mti-malta/malta-time.c | 2 +- arch/mips/sgi-ip22/ip22-time.c | 2 +- arch/mips/sni/time.c | 2 +- arch/x86/kernel/apic/apic.c | 2 +- arch/x86/kernel/apm_32.c | 2 +- arch/x86/kernel/hpet.c | 2 +- arch/x86/kernel/i8253.c | 2 +- arch/x86/kernel/time.c | 2 +- drivers/block/hd.c | 2 +- drivers/clocksource/i8253.c | 2 +- drivers/input/gameport/gameport.c | 2 +- drivers/input/joystick/analog.c | 2 +- drivers/input/misc/pcspkr.c | 2 +- include/linux/i8253.h | 11 +++++++++++ sound/drivers/pcsp/pcsp.h | 2 +- 19 files changed, 29 insertions(+), 18 deletions(-)
* Revert "clocksource: sh_cmt: Runtime PM support"Paul Mundt2011-05-311-10/+2
| | | | | | | | This reverts commit 01fa68b58492a5d6708a91c1f474b6a099a9509e. The same note as per the sh_tmu change applies here, too. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* Revert "clocksource: sh_tmu: Runtime PM support"Paul Mundt2011-05-311-10/+2
| | | | | | | | | | | | | | | | | | | | | | This reverts commit 1b842e91fea9447eff5eb687e28ad61c02f5033e. There is a fundamental ordering race between the early and late probe paths and the runtime PM tie-in that results in __pm_runtime_resume() attempting to take a lock that hasn't been initialized yet (which by proxy also suggests that pm_runtime_init() hasn't yet been run on the device either, making the entire thing unsafe) -- resulting in instant death on SMP or on UP with spinlock debugging enabled: sh_tmu.0: used for clock events sh_tmu.0: used for periodic clock events BUG: spinlock trylock failure on UP on CPU#0, swapper/0 lock: 804db198, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0 ... Revert it for now until the ordering issues can be resolved, or we can get some more help from the runtime PM framework to make this possible. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* Merge branch 'sh-latest' of ↵Linus Torvalds2011-05-232-27/+35
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 * 'sh-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (23 commits) sh: Ignore R_SH_NONE module relocations. SH: SE7751: Fix pcibios_map_platform_irq prototype. sh: remove warning and warning_symbol from struct stacktrace_ops sh: wire up sys_sendmmsg. clocksource: sh_tmu: Runtime PM support clocksource: sh_tmu: __clocksource_updatefreq_hz() update clocksource: sh_cmt: Runtime PM support clocksource: sh_cmt: __clocksource_updatefreq_hz() update dmaengine: shdma: synchronize RCU before freeing, simplify spinlock dmaengine: shdma: add runtime- and system-level power management dmaengine: shdma: fix locking sh: sh-sci: sh7377 and sh73a0 build fixes sh: cosmetic improvement: use an existing pointer serial: sh-sci: suspend/resume wakeup support V2 serial: sh-sci: Runtime PM support sh: select IRQ_FORCED_THREADING. sh: intc: Set virtual IRQs as nothread. sh: fixup fpu.o compile order i2c: add a module alias to the sh-mobile driver ALSA: add a module alias to the FSI driver ...
| * clocksource: sh_tmu: Runtime PM supportMagnus Damm2011-05-231-2/+10
| | | | | | | | | | | | | | | | | | | | | | Add Runtime PM support to the TMU driver. The hardware device is enabled as long as the clocksource or the clockevent portion of the driver is used. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * clocksource: sh_tmu: __clocksource_updatefreq_hz() updateMagnus Damm2011-05-231-11/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch updates the clocksource part of the TMU driver to make use of the __clocksource_updatefreq_hz() function. Without this patch the old code uses clocksource_register() together with a hack that assumes a never changing clock rate (see clk_enable(), clk_get_rate() and clk_disable()). The patch uses clocksource_register_hz() with 1 Hz as initial value, then lets the ->enable() callback update the value with __clocksource_updatefreq_hz() once the struct clk has been enabled and the frequency is stable. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * clocksource: sh_cmt: Runtime PM supportMagnus Damm2011-05-231-2/+10
| | | | | | | | | | | | | | | | | | | | | | Add Runtime PM support to the CMT driver. The hardware device is enabled as long as the clocksource or the clockevent portion of the driver is used. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * clocksource: sh_cmt: __clocksource_updatefreq_hz() updateMagnus Damm2011-05-231-12/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch updates the clocksource part of the CMT driver to make use of the __clocksource_updatefreq_hz() function. Without this patch the old code uses clocksource_register() together with a hack that assumes a never changing clock rate (see clk_enable(), clk_get_rate() and clk_disable()). The patch uses clocksource_register_hz() with 1 Hz as initial value, then lets the ->enable() callback update the value with __clocksource_updatefreq_hz() once the struct clk has been enabled and the frequency is stable. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | clocksource: add common mmio clocksourceRussell King2011-05-233-0/+77
|/ | | | | | | | | | | | | | | | | | | | | | | | | | Add a generic mmio clocksource, covering both 32-bit and 16-bit register access sizes, for up or down counters. This can be used to easily create clocksources for simple counter-based implementations. Cc: Alessandro Rubini <rubini@unipv.it> Cc: Colin Cross <ccross@android.com> Cc: Eric Miao <eric.y.miao@gmail.com> Cc: Erik Gilling <konkers@android.com> Acked-by: "Hans J. Koch" <hjk@hansjkoch.de> Cc: Imre Kaloz <kaloz@openwrt.org> Cc: Krzysztof Halasa <khc@pm.waw.pl> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Lennert Buytenhek <kernel@wantstofly.org> Cc: Linus Walleij <linus.walleij@stericsson.com> Cc: linux-omap@vger.kernel.org Acked-by: Nicolas Pitre <nico@fluxnic.net> Cc: Olof Johansson <olof@lixom.net> Tested-by: Sascha Hauer <s.hauer@pengutronix.de> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Tony Lindgren <tony@atomide.com> Reviewed-by: Viresh Kumar <viresh.kumar@st.com> Cc: Wan ZongShun <mcuos.com@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* Merge branch 'consolidate-clksrc-i8253' of ↵Thomas Gleixner2011-05-143-0/+91
|\ | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:~rmk/linux-2.6-arm into timers/clocksource Conflicts: arch/ia64/kernel/cyclone.c arch/mips/kernel/i8253.c arch/x86/kernel/i8253.c Reason: Resolve conflicts so further cleanups do not conflict further Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * clocksource: add common i8253 PIT clocksourceRussell King2011-05-143-0/+91
| | | | | | | | | | | | | | | | | | | | | | | | This is based upon both arch/arm/mach-footbridge/isa-timer.c and arch/x86/kernel/i8253.c. Acked-by: John Stultz <john.stultz@linaro.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | x86: Convert remaining x86 clocksources to clocksource_register_hz/khzJohn Stultz2011-02-211-8/+2
|/ | | | | | | | | | | | | | | This converts the remaining x86 clocksources to use clocksource_register_hz/khz. CC: jacob.jun.pan@intel.com CC: Glauber Costa <glommer@redhat.com> CC: Dimitri Sivanich <sivanich@sgi.com> CC: Rusty Russell <rusty@rustcorp.com.au> CC: Jeremy Fitzhardinge <jeremy@xensource.com> CC: Chris McDermott <lcm@us.ibm.com> CC: Thomas Gleixner <tglx@linutronix.de> Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> [xen] Signed-off-by: John Stultz <johnstul@us.ibm.com>
generated by cgit v1.1 at 2024-12-27 00:18:04 +0000