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* PM core: rename suspend and resume functionsAlan Stern2009-06-121-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch (as1241) renames a bunch of functions in the PM core. Rather than go through a boring list of name changes, suffice it to say that in the end we have a bunch of pairs of functions: device_resume_noirq dpm_resume_noirq device_resume dpm_resume device_complete dpm_complete device_suspend_noirq dpm_suspend_noirq device_suspend dpm_suspend device_prepare dpm_prepare in which device_X does the X operation on a single device and dpm_X invokes device_X for all devices in the dpm_list. In addition, the old dpm_power_up and device_resume_noirq have been combined into a single function (dpm_resume_noirq). Lastly, dpm_suspend_start and dpm_resume_end are the renamed versions of the former top-level device_suspend and device_resume routines. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* PM: Rename device_power_down/up()Magnus Damm2009-06-121-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | Rename the functions performing "_noirq" dev_pm_ops operations from device_power_down() and device_power_up() to device_suspend_noirq() and device_resume_noirq(). The new function names are chosen to show that the functions are responsible for calling the _noirq() versions to finalize the suspend/resume operation. The current function names do not perform power down/up anymore so the names may be misleading. Global function renames: - device_power_down() -> device_suspend_noirq() - device_power_up() -> device_resume_noirq() Static function renames: - suspend_device_noirq() -> __device_suspend_noirq() - resume_device_noirq() -> __device_resume_noirq() Signed-off-by: Magnus Damm <damm@igel.co.jp> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Len Brown <lenb@kernel.org> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* Merge branch 'cpumask-for-linus' of ↵Rusty Russell2009-03-311-103/+145
|\ | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip Conflicts: arch/x86/include/asm/topology.h drivers/oprofile/buffer_sync.c (Both cases: changed in Linus' tree, removed in Ingo's).
| * x86: cpumask: update 32-bit APM not to mug current->cpus_allowedRusty Russell2009-03-181-103/+145
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup, avoid cpumask games The APM code wants to run on CPU 0: we create an "on_cpu0" wrapper which uses work_on_cpu() if we're not already on cpu 0. This introduces a new failure mode: -ENOMEM, so we add an explicit err arg and handle Linux-style errnos in apm_err(). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> LKML-Reference: <200903111631.29787.rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | PM: Rework handling of interrupts during suspend-resumeRafael J. Wysocki2009-03-301-4/+11
|/ | | | | | | | | | | | | | | | | | | | Use the functions introduced in by the previous patch, suspend_device_irqs(), resume_device_irqs() and check_wakeup_irqs(), to rework the handling of interrupts during suspend (hibernation) and resume. Namely, interrupts will only be disabled on the CPU right before suspending sysdevs, while device drivers will be prevented from receiving interrupts, with the help of the new helper function, before their "late" suspend callbacks run (and analogously during resume). In addition, since the device interrups are now disabled before the CPU has turned all interrupts off and the CPU will ACK the interrupts setting the IRQ_PENDING bit for them, check in sysdev_suspend() if any wake-up interrupts are pending and abort suspend if that's the case. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Ingo Molnar <mingo@elte.hu>
* Merge branch 'linus' into x86/apicIngo Molnar2009-02-221-0/+4
|\ | | | | | | | | | | | | | | | | | | Conflicts: arch/x86/mach-default/setup.c Semantic conflict resolution: arch/x86/kernel/setup.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * PM: Split up sysdev_[suspend|resume] from device_power_[down|up]Rafael J. Wysocki2009-02-221-0/+4
| | | | | | | | | | | | | | | | | | | | | | Move the sysdev_suspend/resume from the callee to the callers, with no real change in semantics, so that we can rework the disabling of interrupts during suspend/hibernation. This is based on an earlier patch from Linus. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | x86: move mach-default/*.h files to asm/Ingo Molnar2009-01-291-1/+1
|/ | | | | | | | 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>
* x86: update Alan Cox's email addressesAlan Cox2009-01-051-2/+2
| | | | | Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, apm: remove CONFIG_APM_REAL_MODE_POWER_OFF in favor of a kernel parameterNiels de Vos2008-12-021-4/+0Star
| | | | | | | | | | | | Remove CONFIG_APM_REAL_MODE_POWER_OFF like CONFIG_APM_POWER_OFF which has been done for linux-2.2.14pre8 (http://lkml.org/lkml/1999/11/23/3). Re-introducing CONFIG_APM_POWER_OFF got nack-ed. Stephen didn't bother to remove CONFIG_APM_REAL_MODE_POWER_OFF, let's get rid of it now. Reference: http://lkml.org/lkml/2008/5/7/97 Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
*-. Merge branches 'x86/alternatives', 'x86/cleanups', 'x86/commandline', ↵Ingo Molnar2008-10-061-1/+0Star
|\ \ | | | | | | | | | 'x86/crashdump', 'x86/debug', 'x86/defconfig', 'x86/doc', 'x86/exports', 'x86/fpu', 'x86/gart', 'x86/idle', 'x86/mm', 'x86/mtrr', 'x86/nmi-watchdog', 'x86/oprofile', 'x86/paravirt', 'x86/reboot', 'x86/sparse-fixes', 'x86/tsc', 'x86/urgent' and 'x86/vmalloc' into x86-v28-for-linus-phase1
| | * arch/x86/kernel/apm_32.c: remove duplicated #includeHuang Weiyi2008-08-211-1/+0Star
| |/ | | | | | | | | | | | | | | | | | | Removed duplicated include file <linux/smp_lock.h> in arch/x86/kernel/apm_32.c. Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Acked-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
* / x86: disable apm on the olpcJeremy Katz2008-09-241-1/+2
|/ | | | | | | | The OLPC doesn't support APM but also doesn't have DMI, so we can't detect and disable it based on DMI data. So, just disable based on machine_is_olpc() Signed-off-by: Jeremy Katz <katzj@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* remove include/linux/pm_legacy.hAdrian Bunk2008-07-241-1/+0Star
| | | | | | | | | | | Remove the obsolete and no longer used include/linux/pm_legacy.h Reviewed-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: Pavel Machek <pavel@suse.cz> Acked-by: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'linux-next' of ↵Linus Torvalds2008-07-171-4/+4
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (72 commits) Revert "x86/PCI: ACPI based PCI gap calculation" PCI: remove unnecessary volatile in PCIe hotplug struct controller x86/PCI: ACPI based PCI gap calculation PCI: include linux/pm_wakeup.h for device_set_wakeup_capable PCI PM: Fix pci_prepare_to_sleep x86/PCI: Fix PCI config space for domains > 0 Fix acpi_pm_device_sleep_wake() by providing a stub for CONFIG_PM_SLEEP=n PCI: Simplify PCI device PM code PCI PM: Introduce pci_prepare_to_sleep and pci_back_from_sleep PCI ACPI: Rework PCI handling of wake-up ACPI: Introduce new device wakeup flag 'prepared' ACPI: Introduce acpi_device_sleep_wake function PCI: rework pci_set_power_state function to call platform first PCI: Introduce platform_pci_power_manageable function ACPI: Introduce acpi_bus_power_manageable function PCI: make pci_name use dev_name PCI: handle pci_name() being const PCI: add stub for pci_set_consistent_dma_mask() PCI: remove unused arch pcibios_update_resource() functions PCI: fix pci_setup_device()'s sprinting into a const buffer ... Fixed up conflicts in various files (arch/x86/kernel/setup_64.c, arch/x86/pci/irq.c, arch/x86/pci/pci.h, drivers/acpi/sleep/main.c, drivers/pci/pci.c, drivers/pci/pci.h, include/acpi/acpi_bus.h) from x86 and ACPI updates manually.
| * Introduce new top level suspend and hibernation callbacksRafael J. Wysocki2008-06-101-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce 'struct pm_ops' and 'struct pm_ext_ops' ('ext' meaning 'extended') representing suspend and hibernation operations for bus types, device classes, device types and device drivers. Modify the PM core to use 'struct pm_ops' and 'struct pm_ext_ops' objects, if defined, instead of the ->suspend(), ->resume(), ->suspend_late(), and ->resume_early() callbacks (the old callbacks will be considered as legacy and gradually phased out). The main purpose of doing this is to separate suspend (aka S2RAM and standby) callbacks from hibernation callbacks in such a way that the new callbacks won't take arguments and the semantics of each of them will be clearly specified. This has been requested for multiple times by many people, including Linus himself, and the reason is that within the current scheme if ->resume() is called, for example, it's difficult to say why it's been called (ie. is it a resume from RAM or from hibernation or a suspend/hibernation failure etc.?). The second purpose is to make the suspend/hibernation callbacks more flexible so that device drivers can handle more than they can within the current scheme. For example, some drivers may need to prevent new children of the device from being registered before their ->suspend() callbacks are executed or they may want to carry out some operations requiring the availability of some other devices, not directly bound via the parent-child relationship, in order to prepare for the execution of ->suspend(), etc. Ultimately, we'd like to stop using the freezing of tasks for suspend and therefore the drivers' suspend/hibernation code will have to take care of the handling of the user space during suspend/hibernation. That, in turn, would be difficult within the current scheme, without the new ->prepare() and ->complete() callbacks. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* | Merge branch 'bkl-removal' of git://git.lwn.net/linux-2.6Linus Torvalds2008-07-141-0/+4
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'bkl-removal' of git://git.lwn.net/linux-2.6: (146 commits) IB/umad: BKL is not needed for ib_umad_open() IB/uverbs: BKL is not needed for ib_uverbs_open() bf561-coreb: BKL unneeded for open() Call fasync() functions without the BKL snd/PCM: fasync BKL pushdown ipmi: fasync BKL pushdown ecryptfs: fasync BKL pushdown Bluetooth VHCI: fasync BKL pushdown tty_io: fasync BKL pushdown tun: fasync BKL pushdown i2o: fasync BKL pushdown mpt: fasync BKL pushdown Remove BKL from remote_llseek v2 Make FAT users happier by not deadlocking x86-mce: BKL pushdown vmwatchdog: BKL pushdown vmcp: BKL pushdown via-pmu: BKL pushdown uml-random: BKL pushdown uml-mmapper: BKL pushdown ...
| * | apm_32: BKL pushdownArnd Bergmann2008-06-201-0/+4
| |/ | | | | | | Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* / x86: Switch apm to unlocked_kernelAlan Cox2008-05-251-10/+15
|/ | | | | | | | | | This pushes the lock a fair way down and the final kill looks like it should be an easy project for someone who wants to have a shot at it. Signed-off-by: Alan Cox <alan@redhat.com> Cc: mingo@redhat.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
*---. Merge branches 'release', 'acpica', 'bugzilla-10224', 'bugzilla-9772', ↵Len Brown2008-04-301-20/+4Star
|\ \ \ | | | | | | | | | | | | 'bugzilla-9916', 'ec', 'eeepc', 'idle', 'misc', 'pm-legacy', 'sysfs-links-2.6.26', 'thermal', 'thinkpad' and 'video' into release
| | | * PM: arch/x86/kernel/apm_32.c: fix build warningAndrew Morton2008-04-151-1/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | arch/x86/kernel/apm_32.c:1215: warning: label 'out' defined but not used Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
| | | * PM: Remove legacy PMPavel Machek2008-04-151-15/+0Star
| |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | AFAICT pm_send_all is a nop when noone uses pm_register... Hmm.. can we just force CONFIG_PM_LEGACY=n, and see what happens? Or maybe this is better idea? It may break build somewhere, but it should be easy to fix... (it builds here, i386 and x86-64). Signed-off-by: Pavel Machek <pavel@suse.cz> Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
| * | fix idle (arch, acpi and apm) and lockdepPeter Zijlstra2008-04-271-0/+3
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | OK, so 25-mm1 gave a lockdep error which made me look into this. The first thing that I noticed was the horrible mess; the second thing I saw was hacks like: 71e93d15612c61c2e26a169567becf088e71b8ff The problem is that arch idle routines are somewhat inconsitent with their IRQ state handling and instead of fixing _that_, we go paper over the problem. So the thing I've tried to do is set a standard for idle routines and fix them all up to adhere to that. So the rules are: idle routines are entered with IRQs disabled idle routines will exit with IRQs enabled Nearly all already did this in one form or another. Merge the 32 and 64 bit bits so they no longer have different bugs. As for the actual lockdep warning; __sti_mwait() did a plainly un-annotated irq-enable. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Tested-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86: switch to proc_create()Alexey Dobriyan2008-04-171-4/+1Star
|/ | | | | Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: isolate PIC/PIT in/out callsAlan Cox2008-01-301-3/+3
| | | | | | | | | | | | | | | | | Rather than remove and/or mangle inb_p/outb_p we want to remove the use of them from inappropriate places. For the PIC/PIT this may eventually depend on 32/64bitism or similar so start by adding inb/outb_pit and inb/outb_pic so that we can make them use any scheme we settle on without disturbing the existing, correct (for ISA), port 0x80 usage. (eg we can make inb_pit use udelay without messing up inb_p). Floppy already does this for the fdc. That really only leaves the CMOS as a core logic item to tackle, and bits of parallel port handling in the chipset layers. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: get rid of checkpatch.pl complains on apm_32.cCyrill Gorcunov2008-01-301-170/+196
| | | | | | | | | | | | | | | | | | | This patch eliminates most of code-style errors discovered by checkpatch.pl on arch/x86/kernel/apm_32.c no code changed: text data bss dec hex filename 12142 1837 84 14063 36ef apm_32.o.before 12142 1837 84 14063 36ef apm_32.o.after md5: 2676b881ad55e387da4a995e8b9ee372 apm_32.o.before.asm 2676b881ad55e387da4a995e8b9ee372 apm_32.o.after.asm Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* arch/x86/kernel/apm_32.c: use time_before, time_before_eq,Julia Lawall2008-01-301-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The functions time_before, time_before_eq, time_after, and time_after_eq are more robust for comparing jiffies against other values. A simplified version of the semantic patch making this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @ change_compare_np @ expression E; @@ ( - jiffies <= E + time_before_eq(jiffies,E) | - jiffies >= E + time_after_eq(jiffies,E) | - jiffies < E + time_before(jiffies,E) | - jiffies > E + time_after(jiffies,E) ) @ include depends on change_compare_np @ @@ #include <linux/jiffies.h> @ no_include depends on !include && change_compare_np @ @@ #include <linux/...> + #include <linux/jiffies.h> // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: unify desc_structGlauber de Oliveira Costa2008-01-301-1/+1
| | | | | | | | | | | | | | | | | | This patch aims to make the access of struct desc_struct variables equal across architectures. In this patch, I unify the i386 and x86_64 versions under an anonymous union, keeping the way they are accessed untouched (a and b for 32-bit code, individual bit-fields for 64-bit). This solution is not beautiful, but will allow us to integrate common code that differed by the way descriptors were used. This is to be viewed incrementally. There's simply too much code to be fixed at once. In the future, goal is to set up in a single way of acessing the desc_struct fields. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: move 8259 defines to i8259.hThomas Gleixner2008-01-301-2/+0Star
| | | | | | | Move the i8259 defines and remove the now io_ports.h Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* PM: ACPI and APM must not be enabled at the same timeLen Brown2008-01-111-7/+3Star
| | | | | | | | | | | | | | | | | | | | | | ACPI and APM used "pm_active" to guarantee that they would not be simultaneously active. But pm_active was recently moved under CONFIG_PM_LEGACY, so that without CONFIG_PM_LEGACY, pm_active became a NOP -- allowing ACPI and APM to both be simultaneously enabled. This caused unpredictable results, including boot hangs. Further, the code under CONFIG_PM_LEGACY is scheduled for removal. So replace pm_active with pm_flags. pm_flags depends only on CONFIG_PM, which is present for both CONFIG_APM and CONFIG_ACPI. http://bugzilla.kernel.org/show_bug.cgi?id=9194 Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* spelling fixes: arch/i386/Simon Arlott2007-10-201-1/+1
| | | | | | | Spelling fixes in arch/i386/. Signed-off-by: Simon Arlott <simon@fire.lp0.eu> Signed-off-by: Adrian Bunk <bunk@kernel.org>
* Merge branch 'dmi-const' of ↵Linus Torvalds2007-10-121-9/+9
| | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/misc-2.6 * 'dmi-const' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/misc-2.6: drivers/firmware: const-ify DMI API and internals
* i386: move kernelThomas Gleixner2007-10-111-0/+2403
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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