- 01 Feb, 2008 40 commits
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Johannes Berg authored
When trying to debug a suspend failure I started implementing PM_TRACE for powerpc. I then noticed that I'm debugging a suspend failure and so PM_TRACE isn't useful at all, but thought that nonetheless this could be useful in the future. Basically, to support PM_TRACE, you add a Kconfig option that selects PM_TRACE and provides the infrastructure as per the help text of PM_TRACE. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
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Rafael J. Wysocki authored
Update the suspend/hibernation debugging and testing documentation to describe the newly introduced testing facilities. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Len Brown <len.brown@intel.com>
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Rafael J. Wysocki authored
Make it possible to test the hibernation core code with the help of the /sys/power/pm_test attribute introduced for suspend testing in the previous patch. Writing an appropriate string to this file causes the hibernation code to work in one of the test modes defined as follows: freezer - test the freezing of processes devices - test the freezing of processes and suspending of devices platform - test the freezing of processes, suspending of devices and platform global control methods(*) processors - test the freezing of processes, suspending of devices, platform global control methods(*) and the disabling of nonboot CPUs core - test the freezing of processes, suspending of devices, platform global control methods(*), the disabling of nonboot CPUs and suspending of platform/system devices (*) - the platform global control methods are only available on ACPI systems and are only tested if the hibernation mode is set to "platform" Then, if a hibernation is started by normal means, the hibernation core will perform its normal operations up to the point indicated by given test level. Next, it will wait for 5 seconds and carry out the resume operations needed to transition the system back to the fully functional state. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Len Brown <len.brown@intel.com>
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Rafael J. Wysocki authored
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
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Rafael J. Wysocki authored
Introduce sysfs attribute /sys/power/pm_test allowing one to test the suspend core code. Namely, writing one of the strings: freezer devices platform processors core to this file causes the suspend code to work in one of the test modes defined as follows: freezer - test the freezing of processes devices - test the freezing of processes and suspending of devices platform - test the freezing of processes, suspending of devices and platform global control methods(*) processors - test the freezing of processes, suspending of devices, platform global control methods and the disabling of nonboot CPUs core - test the freezing of processes, suspending of devices, platform global control methods, the disabling of nonboot CPUs and suspending of platform/system devices (*) These are ACPI global control methods on ACPI systems Then, if a suspend is started by normal means, the suspend core will perform its normal operations up to the point indicated by given test level. Next, it will wait for 5 seconds and carry out the resume operations needed to transition the system back to the fully functional state. Writing "none" to /sys/power/pm_test turns the testing off. When open for reading, /sys/power/pm_test contains a space-separated list of all available tests (including "none" that represents the normal functionality) in which the current test level is indicated by square brackets. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Len Brown <len.brown@intel.com>
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Alan Stern authored
Add PM_RESTORE_PREPARE and PM_POST_RESTORE notifiers to the PM core, to be used in analogy with the existing PM_HIBERNATION_PREPARE and PM_POST_HIBERNATION notifiers. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
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Adrian Bunk authored
This patch moves the prototypes of count_highmem_pages() and restore_highmem() to kernel/power/power.h Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
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Rafael J. Wysocki authored
Some code in acpi_hibernation_finish() was moved to acpi_hibernation_leave(), but the old copy had been left (it's harmless, but also useless). Remove it. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
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Rafael J. Wysocki authored
Move the definitions of hibernation ioctls to a separate header file in include/linux, which can be exported to the user space. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Len Brown <len.brown@intel.com>
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Rafael J. Wysocki authored
Three ioctl numbers belonging to the hibernation userland interface, SNAPSHOT_ATOMIC_SNAPSHOT, SNAPSHOT_AVAIL_SWAP, SNAPSHOT_GET_SWAP_PAGE, are defined in a wrong way (eg. not portable). Provide new ioctl numbers for these ioctls and mark the existing ones as deprecated. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Len Brown <len.brown@intel.com>
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Rafael J. Wysocki authored
Mark the SNAPSHOT_SET_SWAP_FILE ioctl belonging to the hibernation userland interface as deprecated. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Len Brown <len.brown@intel.com>
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Rafael J. Wysocki authored
Modify the hibernation userland interface by adding two new ioctls to it, SNAPSHOT_PLATFORM_SUPPORT and SNAPSHOT_POWER_OFF, that can be used, respectively, to switch the hibernation platform support on/off and to make the kernel transition the system to the hibernation state (eg. ACPI S4) using the platform (eg. ACPI) driver. These ioctls are intended to replace the misdesigned SNAPSHOT_PMOPS ioctl, which from now is regarded as obsolete and will be removed in the future. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Len Brown <len.brown@intel.com>
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Rafael J. Wysocki authored
Add a new ioctl, SNAPSHOT_GET_IMAGE_SIZE, returning the size of the (just created) hibernation image, to the hibernation userland interface. This ioctl is necessary so that the userland utilities using the interface need not access the hibernation image header, owned by the kernel, in order to obtain the size of the image. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Len Brown <len.brown@intel.com>
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Ingo Molnar authored
fix bootup crash in native_read_tsc() that was reported on an Athlon-XP and bisected. The correct feature boundary for X86_FEATURE_MFENCE_RDTSC is not XMM but XMM2. Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (100 commits) ide: move hwif_register() call out of ide_probe_port() ide: factor out code for tuning devices from ide_probe_port() ide: move handling of I/O resources out of ide_probe_port() ide: make probe_hwif() return an error value ide: use ide_remove_port_from_hwgroup in init_irq() ide: prepare init_irq() for using ide_remove_port_from_hwgroup() ide: factor out code removing port from hwgroup from ide_unregister() ide: I/O resources are released too early in ide_unregister() ide: cleanup ide_system_bus_speed() ide: remove needless zeroing of hwgroup fields from init_irq() ide: remove unused ide_hwgroup_t fields ide_platform: remove struct hwif_prop ide: remove hwif->present manipulations from hwif_init() ide: move wait_hwif_ready() documentation in the right place ide: fix handling of busy I/O resources in probe_hwif() <linux/hdsmart.h> is not used by kernel code ide: don't include <linux/hdsmart.h> ide-floppy: cleanup header ide: update/add my Copyrights ide: delete filenames/versions from comments ...
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Bartlomiej Zolnierkiewicz authored
* Add BUG_ON(hwif->present) at the start of ide_probe_port(). * Move hwif_register() call (along with setting hwif->present) from ide_probe_port() to ide_device_add_all(). As a result the port will be registered with the device tree _after_: - probing both devices (if both are present) - port reset (if hwif->reset is set) - restoring local IRQs state and re-enabling port IRQ While at it: * Rename hwif_register() to ide_register_port(). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
* Factor out code for tuning devices from ide_probe_port() to ide_port_tune_devices(). * Move ide_port_tune_devices() call from ide_probe_port() to ide_device_add_all(). There should be no functionality changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
Reserve/release I/O resources in ide_device_add_all() instead of ide_probe_port(). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
Make probe_hwif() return an error value. While at it: * Remove comment about MAX_DRIVES == 2 limitation (it is not special to probe_hwif(), it is a general assumption taken by a lot of IDE code). * Rename probe_hwif() to ide_probe_port(). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
There should be no functionality changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
* BUG_ON() early if 'hwif->next == hwif' and there is a 'match' hwgroup. * Remove printk() for impossible condition and add a BUG_ON(hwgroup->drive) to match code in ide_unregister(). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
Release I/O resources after releasing DMA. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
Use the facts that: * When ide_init() is called 'system_bus_speed' always equals zero. * system_bus_clock() is never called before ide_init(). and: * Move printk() from ide_system_bus_speed() to ide_init(). * Don't assign 'system_bus_speed' in ide_system_bus_speed(). * Don't call ide_system_bus_speed() in system_bus_clock(). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
Since kmalloc_node() is called with __GFP_ZERO flag there is no need to explicitly zero hwgroup fields. While at it: * Use 'hwif' instead of 'hwif->drives[0].hwif' for kmalloc_node() call. * Fix whitespace damage. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
* Remove 'if (hwif != hwif_prop.hwif)' check from plat_ide_remove() (pdev->dev.driver_data and hwif_prop.hwif are set at the same time in plat_ide_probe() and are identical). * Use hwif->index for ide_unregister() in plat_ide_remove(). * Use local variables instead of hwif_prop.plat_ide[_alt]_mapbase in plat_ide_probe() and remove no longer needed struct hwif_prop. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
* Call hwif_init() only if hwif->present is set. * If hwif_init() fails clear hwif->present. * Remove hwif->present manipulations from hwif_init(). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
* Move wait_hwif_ready() documentation before this function. * Fix trailing whitespaces. * s/wait-for-busy/wait-for-non-busy/ * Remove no longer valid comment about the current code behavior. * Docbook-ize it. * Rename wait_hwif_ready() to ide_port_wait_ready(). Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
It could be that I/O resources are busy because some other host driver has already claimed them so don't unregister the devices. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
IDE doesn't need it. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Borislav Petkov authored
Move ide-floppy historical changelog to Documentation/ide/ChangeLog.ide-floppy.1996-2002 Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
The last years stuff and a trip down memory lane... Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
Delete filenames/versions from comments. I'm leaving decisions about adding DRV_VERSION defines and MODULE_VERSION()-s to maintainers of the respective drivers. While at it: * Remove unused VERSION define from ide.c. * Remove unused/stale DRV_VERSION define from au1xxx-ide.c. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
Release DMA resource before zeroing pmif. Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
Add missing hw.dev setup (so hwif->gendev.parent will be set by ide_init_port_hw() to point to the parent device). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
* Make ide_build_sglist() and ide_destroy_dmatable() available also when CONFIG_BLK_DEV_IDEDMA_PCI=n. * Use ide_build_sglist() and ide_destroy_dmatable() in {ics,au1xxx-}ide.c and remove no longer needed {ics,au}ide_build_sglist(). There should be no functionality changes caused by this patch. Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Bartlomiej Zolnierkiewicz authored
* pci_map_sg() -> dma_map_sg() in ide_build_sglist(). * pci_unmap_sg() -> dma_unmap_sg() in ide_destroy_dmatable(). There should be no functionality changes caused by this patch except for blackfin arch whose dma_[un]map_sg() implementation differs from pci_[un]map_sg() one (on s390 arch there is no PCI, on avr32 and h8300 archs PCI is currently unsupported, on m32r arch PCI support depends on BROKEN, on m68k arch PCI support depends on HADES which in turn depends on BROKEN, on all other archs dma_[un]map_sg() functionality matches with pci_[un]map_sg() one). blackfin behavior change was ack-ed by Bryan Wu. Cc: Bryan Wu <bryan.wu@analog.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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