Hi Linus, please pull from: git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6.git suspend This will update the files shown below. thanks! -Len ps. individual patches are available on linux-acpi@xxxxxxxxxxxxxxx and a consolidated plain patch is available here: ftp://ftp.kernel.org/pub/linux/kernel/people/lenb/acpi/patches/suspend/2.6.24/acpi-suspend-20070126-2.6.24.diff.gz Documentation/kernel-parameters.txt | 5 Documentation/power/basic-pm-debugging.txt | 216 ++++++++++++----- Documentation/power/devices.txt | 49 --- Documentation/power/drivers-testing.txt | 30 +- Documentation/power/notifiers.txt | 8 Documentation/power/userland-swsusp.txt | 82 ++---- arch/arm/Kconfig | 3 arch/arm/mach-at91/pm.c | 17 + arch/blackfin/Kconfig | 4 arch/frv/Kconfig | 5 arch/mips/Kconfig | 4 arch/powerpc/Kconfig | 22 + arch/powerpc/platforms/52xx/lite5200_pm.c | 10 arch/sh/Kconfig | 4 arch/x86/Kconfig | 8 arch/x86/kernel/suspend_64.c | 8 arch/x86/mm/init_32.c | 10 drivers/acpi/hardware/hwsleep.c | 79 ++++-- drivers/acpi/sleep/main.c | 129 ++++++++-- drivers/acpi/sleep/sleep.h | 2 drivers/base/power/Makefile | 2 include/acpi/acpixf.h | 2 include/linux/Kbuild | 1 include/linux/notifier.h | 2 include/linux/suspend.h | 56 ++-- include/linux/suspend_ioctls.h | 32 ++ kernel/power/Kconfig | 65 ++--- kernel/power/disk.c | 204 ++++++++++++---- kernel/power/main.c | 171 +++++++++++-- kernel/power/power.h | 90 ++++--- kernel/power/snapshot.c | 31 +- kernel/power/swap.c | 33 +- kernel/power/swsusp.c | 48 --- kernel/power/user.c | 109 ++++++-- 34 files changed, 1034 insertions(+), 507 deletions(-) through these commits: Adrian Bunk (1): Hibernation: Move function prototypes to header Alan Stern (2): Hibernation: Add PM_RESTORE_PREPARE and PM_POST_RESTORE notifiers (rev. 2) PM: Convert PM notifiers to out-of-line code Borislav Petkov (1): Suspend: Clean up suspend_64.c David Brownell (1): PM: Remove obsolete /sys/devices/.../power/state docs Johannes Berg (5): PM: Make PM_TRACE more architecture independent Hibernation: Clean up Kconfig (V2) Suspend: Clean up Kconfig (V2) Suspend: Add config option to disable the freezer if architecture wants that Suspend: Invoke suspend notifications after console switch Rafael J. Wysocki (27): Hibernation: Introduce SNAPSHOT_GET_IMAGE_SIZE ioctl Hibernation: Rework platform support ioctls (rev. 2) Hibernation: Mark SNAPSHOT_SET_SWAP_FILE ioctl as deprecated (rev. 2) Hibernation: Correct definitions of some ioctls (rev. 2) Hibernation: Introduce exportable suspend ioctls header (rev. 2) ACPI: Fix mismerge in acpi_hibernation_finish Suspend: Testing facility (rev. 2) suspend: build fix responding to 2.6.25 kset change Hibernation: New testing facility (rev. 2) PM: Suspend/hibernation debug documentation update (rev. 2) Suspend: Fix compilation warning for CONFIG_SUSPEND unset Hibernation: Move low level resume to disk.c Suspend: Fix comment in main.c Hibernation: Fix comment in disk.c Hibernation: Remove unnecessary variable declaration Suspend: Use common prefix in messages Hibernation: Update messages suspend: fix ia64 allmodconfig build Suspend: Introduce begin() and end() callbacks ACPI: Separate invocations of _GTS and _BFS from _PTS and _WAK ACPI: Separate disabling of GPEs from _PTS ACPI suspend: Call _PTS before suspending devices Hibernation: Introduce begin() and end() callbacks ACPI hibernation: Call _PTS before suspending devices ACPI: Print message before calling _PTS Hibernation: Invoke suspend notifications after console switch suspend: cleanup reference to swsusp_pg_dir[] Shaohua Li (1): ACPI: clear GPE earily in resume to avoid warning with this log: commit a01da01d819ceb4c3f63d2aa7e1321c6a5e53fd8 Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Fri Feb 1 15:28:16 2008 +0100 suspend: cleanup reference to swsusp_pg_dir[] swsusp_pg_dir[] is used for suspend, but not for hibernation. clean-up the ifdefs which worked by accident, while implying the opposite. Delete the __nosavedata, which also implied the opposite. Some day we may optimize CONFIG_ACPI_SLEEP to build minimal kernels for just hibernate or just suspend but not both, but today isn't that day. Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit ee128c59cf30f5a013b309cf95c80f1561ca4388 Author: David Brownell <david-b@xxxxxxxxxxx> Date: Fri Jan 11 01:26:57 2008 +0100 PM: Remove obsolete /sys/devices/.../power/state docs The /sys/devices/.../power/state files have been gone for a while now, but I just noticed some documentation that still refers to them. (Fortunately described as DEPRECATED and WILL REMOVE). Time to remove that obsolete documentation too ... Signed-off-by: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxx> Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit 6c6e1163d2b4833bf448f02aaf26e12053957078 Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Fri Jan 11 01:25:21 2008 +0100 Hibernation: Invoke suspend notifications after console switch Following the recent change in the suspend code path, switch consoles before calling PM notifiers during hibernation. Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit a7c630e98acfad228bd2b3bba59e163ad86ed6ee Author: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> Date: Fri Jan 11 01:22:23 2008 +0100 Suspend: Invoke suspend notifications after console switch In order to fix APM emulation it is necessary to enable apm-emulation notifications for suspends triggered in various ways via the suspend notifiers. However, this will cause the systems using APM emulation to lock up between X being needed to switch away from the VT and X already waiting for resume in the APM ioctl. This patch moves the console switch (if enabled) before the suspend notification (and after the resume notification) to avoid this issue. Signed-off-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit 31210f178861d7584cab1bca12ccd5547194d9eb Author: Borislav Petkov <bbpetkov@xxxxxxxx> Date: Mon Dec 17 00:30:22 2007 +0100 Suspend: Clean up suspend_64.c There's a freakishly long comment in suspend_64.c, shorten it. Signed-off-by: Borislav Petkov <bbpetkov@xxxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxx> Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit 16a00d127d8162c859537bbd8cb3934603a7985a Author: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> Date: Tue Jan 15 23:17:00 2008 -0500 Suspend: Add config option to disable the freezer if architecture wants that This patch makes the freezer optional for suspend to allow the system to work (or not work) like the original PMU suspend. Signed-off-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxx> Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit fca1ac6dca20d23ae708b2bb85b1f4c1b7549f43 Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Tue Jan 8 00:10:57 2008 +0100 ACPI: Print message before calling _PTS Make acpi_sleep_prepare() static and cause it to print a message specifying the ACPI system sleep state to be entered (helpful for debugging the suspend/hibernation code). Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit d629dee14e037644f4ddcd42f74674c782fb3ecf Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Tue Jan 8 00:09:58 2008 +0100 ACPI hibernation: Call _PTS before suspending devices The ACPI 1.0 specification wants us to put devices into low power states after executing the _PTS global control method, while ACPI 2.0 and later want us to do that in the reverse order. The current hibernation code follows ACPI 2.0 in that respect which may cause some ACPI 1.0x systems to hang during hibernation (ref. http://bugzilla.kernel.org/show_bug.cgi?id=9528). Make the hibernation code execute _PTS before putting devices into low power states (ie. in accordance with ACPI 1.0x) with the possibility to override that using the 'acpi_new_pts_ordering' kernel command line option. Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit 07f44315b9cfad180296df99bcd38879f063f092 Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Tue Jan 8 00:08:44 2008 +0100 Hibernation: Introduce begin() and end() callbacks Introduce global hibernation callback .end() and rename global hibernation callback .start() to .begin(), in analogy with the recent modifications of the global suspend callbacks. Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit c833a830b4926ea04d190524966874d061397900 Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Tue Jan 8 00:07:39 2008 +0100 ACPI suspend: Call _PTS before suspending devices The ACPI 1.0 specification wants us to put devices into low power states after executing the _PTS global control method, while ACPI 2.0 and later want us to do that in the reverse order. The current suspend code follows ACPI 2.0 in that respect which causes some ACPI 1.0x systems to hang during suspend (ref. http://bugzilla.kernel.org/show_bug.cgi?id=9528). Make the suspend code execute _PTS before putting devices into low power states (ie. in accordance with ACPI 1.0x) and provide a command line option to override the default if need be. Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit aedf9a8ff25f5890eb416d95520afdc5d40e539b Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Tue Jan 8 00:06:16 2008 +0100 ACPI: Separate disabling of GPEs from _PTS The preparation to enter an ACPI system sleep state is now tied to the disabling of GPEs, but the GPEs should not be disabled before suspending devices. Since on ACPI 1.0x systems the _PTS global control method should be executed before suspending devices, we need to disable GPEs separately. Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit 4e1bc50b0e083b4d990f6eb54a6a098565bd5197 Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Tue Jan 8 00:05:21 2008 +0100 ACPI: Separate invocations of _GTS and _BFS from _PTS and _WAK The execution of ACPI global control methods _GTS and _BFS is currently tied to the preparation to enter a sleep state and to the leaving of the sleep state, respectively. However, these functions are called before disabling the nonboot CPUs and after enabling them, respectively (in fact, on ACPI 1.0x systems the first of them ought to be called before suspending devices), while according to the ACPI specification, _GTS is to be executed right prior to entering the system sleep state and _BFS is to be executed right after the platfor firmware has returned control to the OS on wake up. Move the execution of _GTS and _BFS to the right places. Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit 68db114effdf54dd7fc0c724ab2aef5bc98d9c79 Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Tue Jan 8 00:04:17 2008 +0100 Suspend: Introduce begin() and end() callbacks On ACPI systems the target state set by acpi_pm_set_target() is reset by acpi_pm_finish(), but that need not be called if the suspend fails. All platforms that use the .set_target() global suspend callback are affected by analogous issues. For this reason, we need an additional global suspend callback that will reset the target state regardless of whether or not the suspend is successful. Also, it is reasonable to rename the .set_target() callback, since it will be used for a different purpose on ACPI systems (due to ACPI 1.0x code ordering requirements). Introduce the global suspend callback .end() to be executed at the end of the suspend sequence and rename the .set_target() global suspend callback to .begin(). Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit fbfe034f5ef51cdd8338a868a2101608f8c45757 Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Fri Dec 14 01:07:13 2007 +0100 suspend: fix ia64 allmodconfig build kernel/power/main.c:488: error: ‘pm_test_attr’ undeclared here (not in a function) Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit 4e29bddd1bc13fe78da1d1a11dcb335f7fe36f6e Author: Shaohua Li <shaohua.li@xxxxxxxxx> Date: Wed Jun 20 09:17:58 2007 +0800 ACPI: clear GPE earily in resume to avoid warning Wakeup GPE hasn't a handler. If system is waked up by such GPE like a USB hotplug, I saw a lot of error reporting the GPE hasn't handler. acpi_leave_sleep_state will clear the GPE but it's too late, we should do it before interrupt is re-enabled. Signed-off-by: Shaohua Li <shaohua.li@xxxxxxxxx> Acked-by: Rafael J. Wysocki <rjw@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit 9a72d19a83ff28dd65eae54e210a9141ad993e88 Author: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> Date: Sat Dec 8 02:14:00 2007 +0100 Suspend: Clean up Kconfig (V2) This cleans up the suspend Kconfig and removes the need to declare centrally which architectures support suspend. All architectures that currently support suspend are modified accordingly. Signed-off-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> Acked-by: Russell King <rmk@xxxxxxxxxxxxxxxx> Acked-by: Paul Mackerras <paulus@xxxxxxxxx> Acked-by: Ralf Baechle <ralf@xxxxxxxxxxxxxx> Acked-by: Paul Mundt <lethal@xxxxxxxxxxxx> Cc: Pavel Machek <pavel@xxxxxxx> Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit 03f5cd73a5b5b30f6f3bcf8d68b3b79afb8cb880 Author: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> Date: Sat Dec 8 02:12:39 2007 +0100 Hibernation: Clean up Kconfig (V2) This cleans up the hibernation Kconfig and removes the need to declare centrally which architectures support hibernation. All architectures that currently support hibernation are modified accordingly. Signed-off-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> Acked-by: Paul Mackerras <paulus@xxxxxxxxx> Cc: Pavel Machek <pavel@xxxxxxx> Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit 5c54eb7f956ad54ecb2ffb7933f26831a3b83bb4 Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Sat Dec 8 02:09:43 2007 +0100 Hibernation: Update messages Make hibernation messages start with one common prefix "PM: " and use the word "hibernation" in the messages as a synonym of "suspend to disk". Turn some KERN_INFO messages into debug ones. Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit ee4d64cfc351e1d33a43a62c072228a8d633f9e4 Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Sat Dec 8 02:08:38 2007 +0100 Suspend: Use common prefix in messages Make suspend messages start with one common prefix "PM: ". Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit 5521e77e047321aa77c606d275093e24897c0fa2 Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Sat Dec 8 02:07:40 2007 +0100 Hibernation: Remove unnecessary variable declaration Remove the unnecessary extern declaration of resume_file[] from kernel/power/swap.c . Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit 9248efd164497b06c942e1c38d51a90c268265ef Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Sat Dec 8 02:06:57 2007 +0100 Hibernation: Fix comment in disk.c Fix a comment in kernel/power/disk.c so that it doesn't contain lines longer that 80 characters. Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit 531ca296b97439089a9976c3344e4e2eaa0381a6 Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Sat Dec 8 02:06:00 2007 +0100 Suspend: Fix comment in main.c Fix a comment in kernel/power/main.c so that it doesn't contain lines longer that 80 characters. Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit d2fdea0305f2b5c6887eff954d1cabb304a376ae Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Sat Dec 8 02:04:21 2007 +0100 Hibernation: Move low level resume to disk.c Move the low level restore code to kernel/power/disk.c , since the corresponding low level hibernation code is already there. Make restore fail if device_power_down(PMSG_PRETHAW) returns an error. Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit 2006b470bbc77e4d6b46a7bbb5b68119e1a8db3f Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Sat Dec 8 02:03:26 2007 +0100 Suspend: Fix compilation warning for CONFIG_SUSPEND unset Suspend: Make debug facility depend on CONFIG_SUSPEND Make the new suspend debug facility code depend on CONFIG_SUSPEND, as appropriate, to remove the compiler warning printed when CONFIG_PM is set and CONFIG_SUSPEND is not set. Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit 8ff7d174bef41a219ea7a2d4e99cfd4e8aae0c8c Author: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> Date: Mon Nov 19 23:49:18 2007 +0100 PM: Convert PM notifiers to out-of-line code This patch (as1008b) converts the PM notifier routines from inline calls to out-of-line code. It also prevents pm_chain_head from being created when CONFIG_PM_SLEEP isn't enabled, and EXPORTs the notifier registration and unregistration routines. Signed-off-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit 76eb98a092c3481b3c1f1b9c67c97e77b8cdcea0 Author: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> Date: Mon Nov 19 23:46:16 2007 +0100 PM: Make PM_TRACE more architecture independent 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@xxxxxxxxxxxxxxxx> Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit 5c93d7a4578d187f9a529f986626cd37ab6e3e83 Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Mon Nov 19 23:43:34 2007 +0100 PM: Suspend/hibernation debug documentation update (rev. 2) Update the suspend/hibernation debugging and testing documentation to describe the newly introduced testing facilities. Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit 460db5c6402b5a4e362b564bdfa436dfa4e3b661 Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Mon Nov 19 23:42:31 2007 +0100 Hibernation: New testing facility (rev. 2) 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@xxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit 21779c8de31b1c9e749af676a033109f70156678 Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Tue Jan 29 00:29:06 2008 +0100 suspend: build fix responding to 2.6.25 kset change Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit 73b3b8a6d123c77888caa9acfb5938fc784e7732 Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Mon Nov 19 23:41:19 2007 +0100 Suspend: Testing facility (rev. 2) 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@xxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit f0c5038e08f04af6f6aa0536c7efed6e128520fe Author: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> Date: Mon Nov 19 23:38:25 2007 +0100 Hibernation: Add PM_RESTORE_PREPARE and PM_POST_RESTORE notifiers (rev. 2) 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@xxxxxxxxxxxxxxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxx> Signed-off-by: "Rafael J. Wysocki" <rjw@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit d7b47cc8a4c8dbb1a4a05f4ee48304fb4a4e0099 Author: Adrian Bunk <bunk@xxxxxxxxxx> Date: Mon Nov 19 23:36:20 2007 +0100 Hibernation: Move function prototypes to header This patch moves the prototypes of count_highmem_pages() and restore_highmem() to kernel/power/power.h Signed-off-by: Adrian Bunk <bunk@xxxxxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxx> Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit 0122b99e0414205d1f3c1f4bf80f2082f6f1c8b0 Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Mon Nov 19 23:33:59 2007 +0100 ACPI: Fix mismerge in acpi_hibernation_finish 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@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit f07d2c9078e140323301a72140c6caeb372448dc Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Fri Oct 26 01:05:05 2007 +0200 Hibernation: Introduce exportable suspend ioctls header (rev. 2) 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@xxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit f5147875db58350b7c29856b83ef1e38e88a387b Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Fri Oct 26 01:03:33 2007 +0200 Hibernation: Correct definitions of some ioctls (rev. 2) 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@xxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit dbb027badbbd8ae51e914eca50774755d207826a Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Fri Oct 26 01:02:15 2007 +0200 Hibernation: Mark SNAPSHOT_SET_SWAP_FILE ioctl as deprecated (rev. 2) Mark the SNAPSHOT_SET_SWAP_FILE ioctl belonging to the hibernation userland interface as deprecated. Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit 6ef4bd5a2709f3f8d28e0ce83c911ed2a8af5afe Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Fri Oct 26 01:01:10 2007 +0200 Hibernation: Rework platform support ioctls (rev. 2) 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@xxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> commit edae89f5d1eb1fbe1cab74333db5a8e29776900e Author: Rafael J. Wysocki <rjw@xxxxxxx> Date: Fri Oct 26 00:59:31 2007 +0200 Hibernation: Introduce SNAPSHOT_GET_IMAGE_SIZE ioctl 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@xxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
