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* Pull events into release branchLen Brown2007-08-2516-47/+108
|\ | | | | | | | | | | | | | | Conflicts: drivers/acpi/video.c Signed-off-by: Len Brown <len.brown@intel.com>
| * ACPI: fix ia64 allnoconfig buildLen Brown2007-08-241-2/+3
| | | | | | | | | | | | | | drivers/acpi/event.c:238: error: conflicting types for ‘acpi_bus_generate_netlink_event’ include/acpi/acpi_bus.h:324: error: previous declaration of ‘acpi_bus_generate_netlink_event’ was here Signed-off-by: Len Brown <len.brown@intel.com>
| * ACPI: Schedule /proc/acpi/event for removalLen Brown2007-08-2316-28/+50
| | | | | | | | | | | | | | | | | | | | | | | | Schedule /proc/acpi/event for removal in 6 months. Re-name acpi_bus_generate_event() to acpi_bus_generate_proc_event() to make sure there is no confusion that it is for /proc/acpi/event only. Add CONFIG_ACPI_PROC_EVENT to allow removal of /proc/acpi/event. There is no functional change if CONFIG_ACPI_PROC_EVENT=y Signed-off-by: Len Brown <len.brown@intel.com>
| * ACPI: don't duplicate input events on netlinkZhang Rui2007-08-239-14/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The previous events patch added a netlink event for every user of the legacy /proc/acpi/event interface. However, some users of /proc/acpi/event are really input events, and they already report their events via the input layer. Introduce a new interface, acpi_bus_generate_netlink_event(), which is explicitly called by devices that want to repoprt events via netlink. This allows the input-like events to opt-out of generating netlink events. In summary: events that are sent via netlink: ac/battery/sbs thermal processor thinkpad_acpi dock/bay events that are sent via input layer: button video hotkey thinkpad_acpi hotkey asus_acpi/asus-laptop hotkey sonypi/sonylaptop Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
* | Pull misc into release branchLen Brown2007-08-255-5/+7
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| * | acpiphp_ibm: add missing '\n' to error messageJeremy Fitzhardinge2007-08-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add missing \n to error in ibm_find_acpi_device. Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Adrian Bunk <trivial@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
| * | ACPI: add dump_stack() to trace acpi_format_exception programming errorsAndrew Morton2007-08-251-0/+1
| | | | | | | | | | | | | | | | | | | | | Dump the stack so we can find the secretive caller to acpi_format_exception(). Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
| * | make drivers/acpi/scan.c:create_modalias() staticAdrian Bunk2007-08-251-2/+3
| | | | | | | | | | | | | | | | | | | | | This patch makes the needlessly global create_modalias() static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Len Brown <len.brown@intel.com>
| * | ACPI: Fix a warning of discarding qualifiers from pointer target typeAl Viro2007-08-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | drivers/acpi/ec.c: In function `acpi_ec_ecdt_probe': drivers/acpi/ec.c:873: warning: passing arg 1 of `acpi_get_devices' discards qualifiers from pointer target type Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Len Brown <len.brown@intel.com>
| * | ACPI: "ACPI handle has no context!" should be KERN_DEBUGShaohua Li2007-08-251-1/+1
| | | | | | | | | | | | | | | Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
* | | Pull suspend into release branchLen Brown2007-08-251-8/+11
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| * | | ACPI: enable GPEs before calling _WAK on resumeThomas Renninger2007-08-241-8/+11
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | It seems it's required to enable GPEs before _WAK. E.g. X60 triggers a LID related GPE instead of doing a Notify in WAK. Now the GPE reaches the kernel and the Notify for LID status change gets thrown from there. Signed-off-by: Thomas Renninger <trenn@suse.de> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
* | | Pull video into release branchLen Brown2007-08-251-4/+87
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| * | | ACPI video hotkey: export missing ACPI video hotkey events via input layerLuming Yu2007-08-251-1/+88
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Yu Luming <luming.yu@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
| * | | ACPI video hotkey: remove invalid events handler for video output devicesZhang Rui2007-08-241-4/+0Star
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Both ACPI_VIDEO_NOTIFY_SWITCH and ACPI_VIDEO_NOTIFY_PROBE are valid for video bus devices only. Actually ACPI video output device should never be notified for a output device switch/probe. ACPI bus devices notify handler already has the code to handle these kinds of events. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
* | | Pull thermal into release branchLen Brown2007-08-251-7/+40
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| * | | ACPI: /proc/acpi/thermal_zone trip points are now read-only, mark them as suchPavel Machek2007-08-251-2/+2
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Len Brown <len.brown@intel.com>
| * | | ACPI: thermal: set "thermal.nocrt" via DMI on Gigabyte GA-7ZXLen Brown2007-08-211-1/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This system BIOS sets a critical temperature to 65C, which is too low. https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=155496 Signed-off-by: Len Brown <len.brown@intel.com>
| * | | ACPI: thermal: create "thermal.crt=C" bootparamLen Brown2007-08-141-0/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some hardware will malfunction at a temperature below the BIOS provided critical shutdown threshold. This hook allows moving the critical trip points down to a temperature which provokes a graceful shutdown before the hardware malfunction. http://bugzilla.kernel.org/show_bug.cgi?id=8884 WARNING: A trip-point override will not get noticed until the system delivers a temperature change event, or unless thermal zone polling is enabled. eg. "thermal.tzp=10" Signed-off-by: Len Brown <len.brown@intel.com>
| * | | ACPI: thermal: clean up MODULE_PARM_DESC newlinesLen Brown2007-08-141-5/+5
| | | | | | | | | | | | | | | | | | | | Reported-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Len Brown <len.brown@intel.com>
* | | | Pull sony into release branchLen Brown2007-08-251-6/+18
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| * | | | sony-laptop: call sonypi_compat_init earlierMattia Dongili2007-08-241-6/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sonypi_compat uses a kfifo that needs to be present before _SRS is called to be able to cope with the IRQs triggered when setting resources. Signed-off-by: Mattia Dongili <malattia@linux.it> Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | sony-laptop: enable Vaio FZ eventsMattia Dongili2007-08-241-0/+9
| | |/ / | |/| | | | | | | | | | | | | | Signed-off-by: Mattia Dongili <malattia@linux.it> Signed-off-by: Len Brown <len.brown@intel.com>
* | | | Pull pnp into release branchLen Brown2007-08-2513-200/+42Star
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| * | | | PNP: remove null pointer checksBjorn Helgaas2007-08-245-60/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove some null pointer checks. Null pointers in these areas indicate programming errors, and I think it's better to oops immediately rather than return an error that is easily ignored. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Acked-by: Adam Belay <abelay@novell.com> Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | PNP: remove MODULE infrastructureBjorn Helgaas2007-08-242-88/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We don't support building any part of PNP as a module (*drivers* can be modules, of course, but the PNP infrastructure itself can not). Since MODULE will never be defined, remove the ifdefs and dead code. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Acked-by: Adam Belay <abelay@novell.com> Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | ISAPNP: removed unused isapnp_detected and ISAPNP_DEBUGBjorn Helgaas2007-08-241-7/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ISAPNP_DEBUG isn't used at all. isapnp_detected is set but never read. So remove them both. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Acked-by: Adam Belay <abelay@novell.com> Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | PNPACPI: remove unnecessary casts of "void *"Bjorn Helgaas2007-08-241-8/+5Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove unnecessary casts of void pointers. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Acked-by: Adam Belay <abelay@novell.com> Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | PNPACPI: simplify irq_flags()Bjorn Helgaas2007-08-241-7/+4Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | No need for a temporary variable; just return the flags once we know them. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Acked-by: Adam Belay <abelay@novell.com> Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | PNP: fix up after LindentBjorn Helgaas2007-08-2410-31/+32
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | More manual fixups after Lindent. No functional change. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Acked-by: Adam Belay <abelay@novell.com> Signed-off-by: Len Brown <len.brown@intel.com>
* | | | Pull ec into release branchLen Brown2007-08-251-16/+31
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| * | | | ACPI: EC: revert fix for bugzilla 8709Alexey Starikovskiy2007-08-241-16/+31
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a manual revert of 7c010de7506954e973abfab5c5999c5a97f7a73e, a fix that broke another ASUS in 8909 and 8919. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
* | | | Pull bugzilla-8630 into release branchLen Brown2007-08-251-0/+71
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| * | | | ACPI: Validate XSDT, use RSDT if XSDT failsZhao Yakui2007-08-251-0/+71
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ACPI 1.0 used an RSDT with 32-bit physical addresses. ACPI 2.0 adds an XSDT with 32-bit physical addresses. An ACPI 2.0 aware OS is supposed to use the XSDT (when present) instead of the RSDT. However, several systems have failed because the XSDT contains NULL entries -- while it is missing pointers to needed tables, such as SSDTs. When we find an XSDT with NULL entries, discard it and use the ACPI 1.0 RSDT instead. http://bugzilla.kernel.org/show_bug.cgi?id=8630 Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
* | | | Pull battery into release branchLen Brown2007-08-251-17/+30
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| * | | | Revert "ACPI: Battery: Synchronize battery operations."Len Brown2007-08-151-17/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 3bd92ba19a89fe61ebf58804f9c8675372f50c1c. It is no longer necessary, and it opens up a race. Acked-by: Vladimir Lebedev <vladimir.p.lebedev@gmail.com> Acked-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
* | | | | Pull asus into release branchLen Brown2007-08-251-1/+2
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| * | | | asus-laptop: Fix rmmod of asus_laptopGuillaume Chazarain2007-08-241-1/+2
| | |/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The asus laptop driver conditionnaly registers leds in asus_led_register() depending on their availability, but unconditionnaly unregisters them all at exit time or when the module fails to load. Unregistering not registered leds result in the following Oops. So we should check before unregistering. [<c032d2f9>] do_page_fault+0x511/0x5e9 [<c032bae2>] error_code+0x6a/0x70 [<c026abf8>] device_unregister+0x26/0x32 [<f8864218>] led_classdev_unregister+0x58/0x94 [led_class] [<f88a90f8>] asus_led_exit+0x17/0x41 [asus_laptop] [<f88a91c9>] asus_laptop_exit+0xd/0x3f [asus_laptop] [<c013cee1>] sys_delete_module+0x17b/0x1a2 [<c0106eae>] sysenter_past_esp+0x6b/0xa1 EIP: [<c026a9a3>] device_del+0xb/0x23a SS:ESP 0068:f594ef0c Signed-off-by: Guillaume Chazarain <guichaz@yahoo.fr> Signed-off-by: Len Brown <len.brown@intel.com>
* | | | Merge branch 'upstream-linus' of ↵Linus Torvalds2007-08-244-11/+20
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev: libata: don't check n_sectors during revalidation if zero pata_via: Add Arima W730-K8 and other rebadgings pata_sis: Add the FSC Amilo and friends pata_pdc2027x: PLL detection fixes libata: fix n_sectors failure handling during revalidation
| * | | | libata: don't check n_sectors during revalidation if zeroTejun Heo2007-08-231-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the initial configuration fails early, n_sectors is left at zero. Checking against it during revalidation makes retried configuration fail due to n_sectors mismatch. Ignore zero n_sectors during revalidation. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | | | pata_via: Add Arima W730-K8 and other rebadgingsAlan Cox2007-08-231-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | More cable funnies Signed-off-by: Alan Cox <alan@redhat.com> Tested-by: Mikael Pettersson <mikpe@it.uu.se> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | | | pata_sis: Add the FSC Amilo and friendsAlan Cox2007-08-231-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | More short cables Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | | | pata_pdc2027x: PLL detection fixesMikael Pettersson2007-08-231-9/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously I reported that the pata_pdc2027x PLL detection changes in kernel 2.6.22 broke the driver on my PowerMac: >pata_pdc2027x: Invalid PLL input clock 1691742kHz, give up! This is followed by a number of errors and speed reduction steps on the affected ports. There are two bugs in pata_pdc2027x's PLL detection code: 1. The PLL counter's start value is read before the chip is put in "test mode". Outside of test mode the counter is halted, and on the PowerMac the counter is zero because the chip hasn't been initialised by its BIOS. The fix is to move the read of the start value to after test mode is started, but before the mdelay() in test mode. This also improves the precision of the PLL detection. 2. The code to compute the number of PLL decrements during the mdelay() in test mode fails to consider that the PLL counter only is 30 bits wide. If there is a wraparound, it will compute an incorrect and much too large value. On the PowerMac, the start count is zero, the end count is a large 30-bit value, so wraparound occurs and an out of bounds PLL clock is detected. The fix is to mask the (start - end) computation to 30 bits. While debugging this I also noticed that pdc_read_counter() reads the two halves of the 30-bit PLL counter as 16-bit values, and then combines them as if the halves only are 15 bits wide. To avoid confusion, the halves should be read as 15-bit values. This patch implements all three changes. It fixes the PLL detection failure on my PowerMac, and doesn't cause any regressions on an x86 with an identical card. Signed-off-by: Mikael Pettersson <mikpe@it.uu.se> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | | | libata: fix n_sectors failure handling during revalidationTejun Heo2007-08-231-0/+4
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If revalidation fails because device has different n_sectors after configuration the original n_sectors should be restored before failing revalidation. Without this fix, n_sectors difference will incorrectly and silently pass revalidation when revalidation is retried. Signed-off-by: Tejun Heo <htejun@gmail.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | | | tty: dont needlessly cast kmalloc() return valueJesper Juhl2007-08-241-4/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | kmalloc() hands us a void pointer, we don't need to cast it. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Merge branch 'master' of ↵Linus Torvalds2007-08-242-2/+10
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ssh://master.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb * 'master' of ssh://master.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb: V4L/DVB (6070): Fix a warning at dvb_net V4L/DVB (6042): b2c2-flexcop: fix Airstar HD5000 tuning regression
| * | | | V4L/DVB (6070): Fix a warning at dvb_netMauro Carvalho Chehab2007-08-231-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | static function dvb_net_sec declares input arg "pkt" as u8. However, the same argument at dvb_net_sec_callback is defined as "const u8". When calling dvb_net_sec, this is casted as just "u8". gcc 4.2.1 generates a warning about that: CC [M] drivers/media/dvb/dvb-core/dvb_net.o drivers/media/dvb/dvb-core/dvb_net.c: In function "dvb_net_sec_callback": drivers/media/dvb/dvb-core/dvb_net.c:905: warning: passing argument 2 of "dvb_net_sec" discards qualifiers from pointer target type Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | | | V4L/DVB (6042): b2c2-flexcop: fix Airstar HD5000 tuning regressionTrent Piepho2007-08-231-0/+7
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Git changeset 6bdcc6e6dbab8daffd05e5026486f34ba41a6c72 dropped the stand-alone lgh06xf module, whose functionality was absorbed into the dvb-pll module. However, there was a minor difference between the code in lgh06xf and dvb-pll, which caused a regression in b2c2-flexcop devices using the LG-H06xF NIM. dvb-pll will probe for the presence of an i2c pll chip by performing a single byte read, the lgh06xf driver did not do this. Unfortunately, the code in flexcop-i2c.c does not currently support 1 byte or 0 byte reads as a probe. Such probes with the current code will always fail. In order to work around this problem, and restore proper functionality of the Airstar HD5000 device, this hack was created to make the probe appear to succeed. The single byte read in dvb_pll_attach is the only place where such a probe would ever occur, so this change is safe, and will not affect any other devices. Of course, if one knew how to actually perform the read operation, it would be better to go that route. In the meantime, however, we must apply this workaround, in order to prevent the regression that causes tuning to fail on the Airstar HD5000 ATSC device. Thanks to Jarod Wilson, who had originally reported this regression, and to Geoffrey Hausheer, whose original workaround patch led us to find the actual cause of the problem. Signed-off-by: Trent Piepho <xyzzy@speakeasy.org> Cc: Geoffrey Hausheer <inli3epy93n@phracturedblue.com> Acked-by: Jarod Wilson <jwilson@redhat.com> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-schedLinus Torvalds2007-08-241-7/+25
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched: sched: tweak the sched_runtime_limit tunable sched: skip updating rq's next_balance under null SD sched: fix broken SMT/MC optimizations sched: accounting regression since rc1 sched: fix sysctl directory permissions sched: sched_clock_idle_[sleep|wakeup]_event()
| * | | | sched: sched_clock_idle_[sleep|wakeup]_event()Ingo Molnar2007-08-231-7/+25
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | construct a more or less wall-clock time out of sched_clock(), by using ACPI-idle's existing knowledge about how much time we spent idling. This allows the rq clock to work around TSC-stops-in-C2, TSC-gets-corrupted-in-C3 type of problems. ( Besides the scheduler's statistics this also benefits blktrace and printk-timestamps as well. ) Furthermore, the precise before-C2/C3-sleep and after-C2/C3-wakeup callbacks allow the scheduler to get out the most of the period where the CPU has a reliable TSC. This results in slightly more precise task statistics. the ACPI bits were acked by Len. Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: Len Brown <len.brown@intel.com>
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