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* sh: CMT suspend/resumeMagnus Damm2009-08-14
| | | | | | | | | This patch updates the SuperH CMT driver with suspend and resume callbacks for the suspend-to-ram case. This patch stops the CMT channel at suspend time to avoid unwanted wake up events. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* clocksource: sh_tmu: Make undefined TCOR behaviour less undefined.Shin-ichiro KAWASAKI2009-06-24
| | | | | | | | | | | | Avoid undocumented vague TMU behavior when zero value is set to TCOR. This primarily fixes up issues encountered under qemu with a zero-length period, while the hardware itself is fairly ambivalent one way or the other. Signed-off-by: Shin-ichiro KAWASAKI <kawasaki@juno.dti.ne.jp> Acked-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
*---. Merge branches 'sh/pci-express-integration', 'sh/rsk-updates', ↵Paul Mundt2009-06-17
|\ \ \ | | | | | | | | | | | | 'sh/platform-updates' and 'sh/perf_counter'
| | | * time: move PIT_TICK_RATE to linux/timex.hArnd Bergmann2009-06-16
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PIT_TICK_RATE is currently defined in four architectures, but in three different places. While linux/timex.h is not the perfect place for it, it is still a reasonable replacement for those drivers that traditionally use asm/timex.h to get CLOCK_TICK_RATE and expect it to be the PIT frequency. Note that for Alpha, the actual value changed from 1193182UL to 1193180UL. This is unlikely to make a difference, and probably can only improve accuracy. There was a discussion on the correct value of CLOCK_TICK_RATE a few years ago, after which every existing instance was getting changed to 1193182. According to the specification, it should be 1193181.818181... Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Len Brown <lenb@kernel.org> Cc: john stultz <johnstul@us.ibm.com> Cc: Dmitry Torokhov <dtor@mail.ru> Cc: Takashi Iwai <tiwai@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | / sh: turn off irqs when disabling CMT/TMU timersMagnus Damm2009-06-17
|/ / | | | | | | | | | | | | | | | | | | | | | | | | Modify the CMT and TMU drivers to disable interrupts when disabling the timer. Only using start/stop bits is not enough. This fixes a bootup hang on Migo-R when the CMT is replaced by TMU for clockevents but the CMT keeps on delivering irqs even though the timer start bit is off. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* / clocksource: Drop unused irqaction.mask from SH drivers.Paul Mundt2009-06-14
|/ | | | | | | | | The irqaction.mask is legacy code that is wholly unused and going away, so simply drop its use in the SH drivers completely. Fixes up build failures in -next. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* clocksource: sh_mtu2/cmt_register() should be static.Paul Mundt2009-05-03
| | | | | | Neither of these need to be exported, so just make them static. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Consolidate MTU2/CMT/TMU timer platform data.Paul Mundt2009-05-03
| | | | | | | | | All of the SH timers use a roughly identical structure for platform data, which presently is broken out for each block. Consolidate all of these definitions, as there is no reason for them to be broken out in the first place. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* clocksource: SuperH TMU Timer driverMagnus Damm2009-05-03
| | | | | | | | | | | | | | This patch adds a TMU driver for the SuperH architecture. The TMU driver is a platform driver with early platform support to allow using a TMU channel as clockevent or clocksource during system bootup or later. Clocksource or clockevent can be selected. Both periodic and oneshot clockevents are supported. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* clocksource: SuperH MTU2 Timer driverMagnus Damm2009-05-03
| | | | | | | | | | | | | | | This patch adds a MTU2 driver for the SuperH architecture. The MTU2 driver is a platform driver with early platform support to allow using a MTU2 channel as only clockevent during system bootup. Clocksource on sh2a is currently unsupported due to code generation issues with 64-bit math, so at this point only periodic clockevent support is in place. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* clocksource: sh_cmt 16-bit fixesMagnus Damm2009-04-29
| | | | | | | | This patch contains various fixes for 16-bit cmt hardware. With this applied periodic clockevents work fine on sh7203. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: setup timers in late_time_init()Magnus Damm2009-04-28
| | | | | | | | | | | | | | This patch moves the SuperH timer setup code from time_init() to late_time_init(). Good things about this change: - interrupts: they are enabled at late_time_init() - mm: regular kmalloc() can be used at late_time_init() Together with moving to late_time_init() this patch changes the sh_cmt driver to always allocate with kmalloc(). This simplifies the code a bit and also fixes section mismatches. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* clocksource: improve sh_cmt clocksource overflow handlingMagnus Damm2009-04-28
| | | | | | | | | | | | This patch improves the sh_cmt clocksource handling. Currently the counter value is ignored in the case of overflow. With this patch the overflow flag is read before and after reading the counter, removing any counter value and overflow flag mismatch issues. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* clocksource: sh_cmt clocksource supportMagnus Damm2009-04-21
| | | | | | | | Add clocksource support to the sh_cmt driver. With this in place we can do tickless with a single CMT channel. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* Merge branch 'master' of ↵Paul Mundt2009-04-21
|\ | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
| * clocksource: pass clocksource to read() callbackMagnus Damm2009-04-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Pass clocksource pointer to the read() callback for clocksources. This allows us to share the callback between multiple instances. [hugh@veritas.com: fix powerpc build of clocksource pass clocksource mods] [akpm@linux-foundation.org: cleanup] Signed-off-by: Magnus Damm <damm@igel.co.jp> Acked-by: John Stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | clocksource: sh_cmt earlytimer supportMagnus Damm2009-04-19
|/ | | | | | | | Add Early Platform Driver support to the sh_cmt driver using the earlytimer class. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* clocksource: sh_cmt: use remove_irq() and remove clockevent workaroundMagnus Damm2009-04-01
| | | | | | | | | Update the sh_cmt driver to make use of recent irq and clockevent changes: - use remove_irq() together with setup_irq() - remove mult workaround since WARN_ON() now has been moved Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* Merge branch 'core/percpu' into percpu-cpumask-x86-for-linus-2Ingo Molnar2009-03-27
|\ | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: arch/parisc/kernel/irq.c arch/x86/include/asm/fixmap_64.h arch/x86/include/asm/setup.h kernel/irq/handle.c Semantic merge: arch/x86/include/asm/fixmap.h Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86: move mach-default/*.h files to asm/Ingo Molnar2009-01-29
| | | | | | | | | | | | | | | | We are getting rid of subarchitecture support - move the hook files to asm/. (These are now stale and should be replaced with more explicit runtime mechanisms - but the transition is simpler this way.) Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | sh: CMT clockevent platform driverMagnus Damm2009-01-29
|/ | | | | | | | | | | | | | | | | SuperH CMT clockevent driver. Both 16-bit and 32-bit CMT versions are supported, but only 32-bit is tested. This driver contains support for both clockevents and clocksources, but no unregistration is supported at this point. Works fine as clock source and/or event in periodic or oneshot mode. Tested on sh7722 and sh7723, but should work with any cpu/architecture. This version is lacking clocksource and early platform driver support for now - this to minimize the amount of dependencies. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* Merge branch 'cpus4096-for-linus-2' of ↵Linus Torvalds2009-01-02
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (66 commits) x86: export vector_used_by_percpu_irq x86: use logical apicid in x2apic_cluster's x2apic_cpu_mask_to_apicid_and() sched: nominate preferred wakeup cpu, fix x86: fix lguest used_vectors breakage, -v2 x86: fix warning in arch/x86/kernel/io_apic.c sched: fix warning in kernel/sched.c sched: move test_sd_parent() to an SMP section of sched.h sched: add SD_BALANCE_NEWIDLE at MC and CPU level for sched_mc>0 sched: activate active load balancing in new idle cpus sched: bias task wakeups to preferred semi-idle packages sched: nominate preferred wakeup cpu sched: favour lower logical cpu number for sched_mc balance sched: framework for sched_mc/smt_power_savings=N sched: convert BALANCE_FOR_xx_POWER to inline functions x86: use possible_cpus=NUM to extend the possible cpus allowed x86: fix cpu_mask_to_apicid_and to include cpu_online_mask x86: update io_apic.c to the new cpumask code x86: Introduce topology_core_cpumask()/topology_thread_cpumask() x86: xen: use smp_call_function_many() x86: use work_on_cpu in x86/kernel/cpu/mcheck/mce_amd_64.c ... Fixed up trivial conflict in kernel/time/tick-sched.c manually
| * cpumask: convert struct clock_event_device to cpumask pointers.Rusty Russell2008-12-13
| | | | | | | | | | | | | | | | | | | | | | | | | | Impact: change calling convention of existing clock_event APIs struct clock_event_timer's cpumask field gets changed to take pointer, as does the ->broadcast function. Another single-patch change. For safety, we BUG_ON() in clockevents_register_device() if it's not set. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Ingo Molnar <mingo@elte.hu>
* | clocksource, acpi_pm.c: put acpi_pm_read_slow() under CONFIG_PCIBjorn Helgaas2008-12-12
|/ | | | | | | | | | | | | | | | | | | | | | | acpi_pm_read_slow() is only used when CONFIG_PCI=y, so move the definition inside the ifdef. Otherwise this causes a "defined but not used" warning when building with CONFIG_ACPI=y and CONFIG_PCI=n (that's not supported yet, but it could be). Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: mingo@elte.hu Cc: johnstul@us.ibm.com Cc: akpm@linux-foundation.org Cc: bjorn.helgaas@hp.com Cc: lenb@kernel.org Cc: linux@dominikbrodowski.net Cc: tglx@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
*---. Merge branches 'timers/clocksource', 'timers/hrtimers', 'timers/nohz', ↵Thomas Gleixner2008-10-20
|\ \ \ | | | | | | | | | | | | 'timers/ntp', 'timers/posixtimers' and 'timers/debug' into v28-timers-for-linus
| | * | clocksource, acpi_pm.c: fix check for monotonicityDominik Brodowski2008-09-11
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | Actually check the monotonicity of the ACPI PMTMR ten times, only delay for 0.9 miliseconds at most, and bail out early if some problem is determined. Reported-by: Jochen Voß <jochen.voss@googlemail.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * clocksource, acpi_pm.c: check for monotonicityDominik Brodowski2008-09-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current check for monotonicity is way too weak: Andreas Mohr reports ( http://lkml.org/lkml/2008/8/10/77 ) that on one of his test systems the current check only triggers in 50% of all cases, leading to catastrophic timer behaviour. To fix this issue, expand the check for monotonicity by doing ten consecutive tests instead of one. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * clocksource, acpi_pm.c: use proper read function also in errata modeDominik Brodowski2008-09-06
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On all hardware (some Intel ICH4, PIIX4 and PIIX4E chipsets) affected by a hardware errata there's about a 4.2% chance that initialization of the ACPI PMTMR fails. On those chipsets, we need to read out the timer value at least three times to get a correct result, for every once in a while (i.e. within a 3 ns window every 69.8 ns) the read returns a bogus result. During normal operation we work around this issue, but during initialization reading a bogus value may lead to -EINVAL even though the hardware is usable. Thanks to Andreas Mohr for spotting this issue. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* / clocksource: check rangeDavid Howells2008-08-21
|/ | | | | | | | | Check that the value being passed to parse_pmtmr() does not exceed the limits of pmtmr_ioport. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Fix printk format warning in clocksource/acpi_pm.cLinus Torvalds2008-07-15
| | | | | | For real, this time. The earlier attempt just moved the warning around. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* acpi_pm clccksource: fix printk format warningRandy Dunlap2008-07-11
| | | | | | | | | | Fix printk format warning in acpi_pm clocksource: linux-next-20080711/drivers/clocksource/acpi_pm.c:231: warning: format '%04lx' expects type 'long unsigned int', but argument 2 has type 'u32' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: akpm <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* pmtmr: allow command line override of ioportThomas Gleixner2008-07-10
| | | | | | | Stupid BIOSes do not tell us about the PMTimer, but we might know where it is. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* tclib: Fix compile warningsDavid Brownell2008-03-13
| | | | | | | Does that have something analagous to this "remove warnings" patch? Seems setup_clkevents() no longer needs a t0_clk parameter either... Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
* atmel_tc clocksource/clockevent codeDavid Brownell2008-03-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | Clocksource and clockevent device based on the Atmel TC blocks. The clockevent device handles both periodic and oneshot modes, so this enables NO_HZ and high res timers on some platforms that previously couldn't use those mechanisms. This works on both AVR32 and AT91 chips, given relevant patches for tclib support (always) and clockevents (or else this will only look like a higher precision clocksource). It's an updated and modularized version of an AT91-only patch that has circulated for some time now. Changes relative to the original patch: * Update to use new tclib API * Replace open-coded do-while loop using goto with a real do-while loop * Minor irq handler optimization: Load register base address from dev_id instead of a global variable. * Aggressively turn off clocks when the clockevent isn't being used * Include the clockevent code on AT91RM9200 as well. The rating is lower than the System Timer, so the clock will usually stay off. * Don't assume that the number of clocks is always equal to the number of irqs. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
* x86_64: fix typo in acpi_pm.cAlessio Igor Bogani2007-07-21
| | | | | | | | Signed-off-by: Alessio Igor Bogani <abogani@texware.it> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* PCI: Change all drivers to use pci_device->revisionAuke Kok2007-07-11
| | | | | | | | | | | | | | | | | | | | Instead of all drivers reading pci config space to get the revision ID, they can now use the pci_device->revision member. This exposes some issues where drivers where reading a word or a dword for the revision number, and adding useless error-handling around the read. Some drivers even just read it for no purpose of all. In devices where the revision ID is being copied over and used in what appears to be the equivalent of hotpath, I have left the copy code and the cached copy as not to influence the driver's performance. Compile tested with make all{yes,mod}config on x86_64 and i386. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Acked-by: Dave Jones <davej@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* ACPI: correct pathname in commentDaniel Walker2007-04-25
| | | | | | Signed-off-by: Daniel Walker <dwalker@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
* [PATCH] correct slow acpi_pm ratingjohn stultz2007-03-27
| | | | | | | | | | | | | | | | | | | On Bob's machine clocksource is selecting PIT over the ACPI PM timer, because he has the PIIX4 bug. That bug drops the ACPI PM timers rating to the same as the PIT, so that's why you're getting the PIT. Realistically, the PIT is much slower then even the triple read ACPI PM, so the de-ranking code is probably dropping it too far. So don't drop ACPI PM quite so low if we see the PIIX4 bug. Signed-off-by: John Stultz <johnstul@us.ibm.com> Cc: Bob Tracy <rct@gherkin.frus.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] clocksource init adjustments (fix bug #7426)john stultz2007-03-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch resolves the issue found here: http://bugme.osdl.org/show_bug.cgi?id=7426 The basic summary is: Currently we register most of i386/x86_64 clocksources at module_init time. Then we enable clocksource selection at late_initcall time. This causes some problems for drivers that use gettimeofday for init calibration routines (specifically the es1968 driver in this case), where durring module_init, the only clocksource available is the low-res jiffies clocksource. This may cause slight calibration errors, due to the small sampling time used. It should be noted that drivers that require fine grained time may not function on architectures that do not have better then jiffies resolution timekeeping (there are a few). However, this does not discount the reasonable need for such fine-grained timekeeping at init time. Thus the solution here is to register clocksources earlier (ideally when the hardware is being initialized), and then we enable clocksource selection at fs_initcall (before device_initcall). This patch should probably get some testing time in -mm, since clocksource selection is one of the most important issues for correct timekeeping, and I've only been able to test this on a few of my own boxes. Signed-off-by: John Stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] Allow early access to the power management timerThomas Gleixner2007-02-16
| | | | | | | | | | | | | | | | | | | | | | | Allow early access to the power management timer by exposing the verified read function and providing a helper function which checks the pmtmr_ioport variable and returns either the pm timer readout or 0 in case the pm timer is not available. Create a new header file and replace also the ifdef'ed extern definition in arch/i386/kernel/acpi/boot.c This is a preperatory patch for the rework of the local apic timer calibration. No functional changes. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: john stultz <johnstul@us.ibm.com> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] clocksource: replace is_continuous by a flag fieldThomas Gleixner2007-02-16
| | | | | | | | | | | | | Using a flag filed allows to encode more than one information into a variable. Preparatory patch for the generic clocksource verification. [mingo@elte.hu: convert vmitime.c to the new clocksource flag] Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: john stultz <johnstul@us.ibm.com> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] clocksource: small cleanupDaniel Walker2006-12-10
| | | | | | | | | | | | Mostly changing alignment. Just some general cleanup. [akpm@osdl.org: build fix] Signed-off-by: Daniel Walker <dwalker@mvista.com> Acked-by: John Stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] time: re-add verify_pmtmr_ratejohn stultz2006-12-08
| | | | | | | | | | | | | | | | | | | | | | | This patch re-adds the verify_pmtmr_rate functionality from 2.6.17 that I dropped 2.6.18. This resolves problems seen on older K6 ASUS boards where the ACPI PM timer runs too fast. See: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=211902 http://bugme.osdl.org/show_bug.cgi?id=2375 Thanks to Ian Campbell for re-reporting this and testing the fix! Signed-off-by: John Stultz <johnstul@us.ibm.com> Cc: Andi Kleen <ak@suse.de> Cc: Ian Campbell <ijc@hellion.org.uk> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] clocksource: acpi_pm: add another greylist chipsetDaniel Walker2006-10-21
| | | | | | | | | | | | | | I have an acpi_pm that goes backwards, but it's not intel. I tested the verified read and my acpi_pm started to function properly. So I added it to the greylist. I'm assuming that's the right spot. I also added an unlikely() to the while, cause it seems appropriate. Signed-off-by: Daniel Walker <dwalker@mvista.com> Acked-by: John Stultz <johnstul@us.ibm.com> Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] scx200_hrt: fix precedence bug manifesting as 27x clock in 1 MHz modeJim Cromie2006-10-04
| | | | | | | | | | | | | | | | | | | | | | | Fix paren-placement / precedence bug breaking initialization for 1 MHz clock mode. Also fix comment spelling error, and fence-post (off-by-one) error on symbol used in request_region. Addresses http://bugzilla.kernel.org/show_bug.cgi?id=7242 Thanks alexander.krause@erazor-zone.de, dzpost@dedekind.net, for the reports and patch test, and phelps@mantara.com for the independent patch and verification. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Cc: <alexander.krause@erazor-zone.de> Cc: <dzpost@dedekind.net> Cc: <phelps@mantara.com> Acked-by: John Stultz <johnstul@us.ibm.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] GTOD: add scx200 HRT clocksourceJim Cromie2006-06-26
| | | | | | | | | | Add a GTOD clocksource driver based on the Geode SCx200's Hi-Res Timer. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] generic-time: add macro to simplify/hide mask constantsJim Cromie2006-06-26
| | | | | | | | | | | Add a CLOCKSOURCE_MASK macro to simplify initializing the mask for a struct clocksource, and use it to replace literal mask constants in the various clocksource drivers. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Acked-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] make pmtmr_ioport __read_mostlyAndreas Mohr2006-06-26
| | | | | | | | | | - written on init only, accessed for every timer read --> __read_mostly - fix broken sentence Signed-off-by: Andreas Mohr <andi@lisas.de> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] time: rename clocksource functionsjohn stultz2006-06-26
| | | | | | | | | | | As suggested by Roman Zippel, change clocksource functions to use clocksource_xyz rather then xyz_clocksource to avoid polluting the namespace. Signed-off-by: John Stultz <johnstul@us.ibm.com> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Time: i386 Clocksource Driversjohn stultz2006-06-26
Implement the time sources for i386 (acpi_pm, cyclone, hpet, pit, and tsc). With this patch, the conversion of the i386 arch to the generic timekeeping code should be complete. The patch should be fairly straight forward, only adding the new clocksources. [hirofumi@mail.parknet.co.jp: acpi_pm cleanup] Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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