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2008-04-14ARM: OMAP: Timer32K: Move timer32k to mach-omap1Kevin Hilman3-5/+2
Move now OMAP1-specific timer32k code to mach-omap1 since OMAP2/3 32k timers are done in gptimer code. Signed-off-by: Kevin Hilman <khilman@mvista.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-04-14ARM: OMAP: Timer32K: Move 32k-based sched_clock() to common codeKevin Hilman2-26/+17
Since 32k timer code is moving to OMAP1 specific dir, move the 32k-based sched_clock() into common code where it is based on the 32k sync counter and can be used even when using MPU timer. While moving, change the ticks-to-nsecs conversion to use the helper functions provided by clocksource.h. Also removed the unused ticks_to_usec, leaving only ticks_to_nsec. Signed-off-by: Kevin Hilman <khilman@mvista.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-04-14ARM: OMAP: Timer32K: Re-organize duplicated 32k-timer codeKevin Hilman4-61/+141
On OMAP2/3, the gp-timer code can be used for a 32kHz timer simply by setting the source to be the 32k clock instead of sys_clk. This patch uses the mach-omap2/timer-gp.c code for 32kHz timer on OMAP2, moving the logic into mach-omap2/timer-gp.c, and not using plat-omap/timer32k.c which, for OMAP2, is redundant with the timer-gp code. Also, if CONFIG_OMAP_32K_TIMER is enabled, the gptimer-based clocksource is not used. Instead the default 32k sync counter is used as the clocksource (see the clocksource in plat-omap/common.c.) This is important for sleep/suspend so there is a valid counter during sleep. Note that the suspend/sleep code needs fixing to check for overflows of this counter. In addition, the OMAP2/3 details are removed from timer32k.c leaving that with only OMAP1 specifics. A follow-up patch will move it from plat-omap common code to mach-omap1. Signed-off-by: Kevin Hilman <khilman@mvista.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-04-14ARM: OMAP: Split omap_cfg_reg() into omap processor specific functionsTony Lindgren3-137/+139
Use omap processor specific function depending on system type. Based on an earlier patch by Klaus Pedersen <klaus.k.pedersen@nokia.com>. Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-04-14ARM: OMAP: Allow registering pin mux functionTony Lindgren4-20/+60
This patch changes pin multiplexing init to allow registering custom function. The omap_cfg_reg() func will be split into omap processor specific functions in later patch. This is done to make adding omap3 pin multiplexing easier. Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-04-14ARM: OMAP: use edge/level handlers from generic IRQ frameworkKevin Hilman1-35/+7
Currently, the GPIO interrupt handling is duplicating some of the work done by the generic IRQ handlers (handle_edge_irq, handle_level_irq) such as detecting nesting, handling re-triggers etc. Remove this duplication and use generic hooks based on IRQ type. Using generic IRQ handlers ensures correct behavior when using threaded interrupts introduced by the -rt patch. Signed-off-by: Kevin Hilman <khilman@mvista.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-04-14ARM: OMAP: Clear level-triggered GPIO interrupts in unmask hookKevin Hilman1-14/+13
The clearing was moved to the unmask hook because it is known to run after the interrupt handler has actually run. Before this patch, if interrupts are threaded, the clearing/unmasking of level triggered interrupts would be done before the threaded handler actually ran. Signed-off-by: Kevin Hilman <khilman@mvista.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-04-14ARM: OMAP: Use gpiolib with tps65010 for OSK 5912David Brownell3-117/+82
Convert OSK board to use new tps65010 gpiolib support. This includes moving its LED support from leds-osk to gpio-leds, giving more trigger options and a net platform code shrink. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-04-14ARM: OMAP: I2C: tps65010 driver converts to gpiolibDavid Brownell3-1/+131
Make the tps65010 driver use gpiolib to expose its GPIOs. Note: This patch will get merged via omap tree instead of I2C as it will cause some board updates. This has been discussed at on the I2C list: http://lists.lm-sensors.org/pipermail/i2c/2008-March/003031.html Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: i2c@lm-sensors.org Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-04-14ARM: OMAP: 5912 OSK GPIO updatesDavid Brownell2-53/+17
Start cleaning up GPIO handling for OMAP5912 OSK board: - Initialize GPIOs using the cross-platform calls, not the old OMAP-private ones. - Move touchscreen setup out of ads7846 code into board-specfic setup code, where it belongs. This doesn't depend on the patches to update OMAP to use the gpiolib implementation framework. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-04-14ARM: OMAP: Use gpiolibDavid Brownell3-60/+105
Update OMAP to use the new GPIO implementation framework. This is just a quick'n'dirty update ... more code could now be removed, ideally as part of cleaning up the entire OMAP GPIO infrastructure ... Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-04-12Linux 2.6.25-rc9v2.6.25-rc9Linus Torvalds1-1/+1
2008-04-12Merge branch 'docs' of git://git.lwn.net/linux-2.6Linus Torvalds15-20/+380
* 'docs' of git://git.lwn.net/linux-2.6: Add additional examples in Documentation/spinlocks.txt Move sched-rt-group.txt to scheduler/ Documentation: move rpc-cache.txt to filesystems/ Documentation: move nfsroot.txt to filesystems/ Spell out behavior of atomic_dec_and_lock() in kerneldoc Fix a typo in highres.txt Fixes to the seq_file document Fill out information on patch tags in SubmittingPatches Add the seq_file documentation
2008-04-11Add additional examples in Documentation/spinlocks.txtMark Fasheh1-0/+22
Checkpatch will throw an error if code doesn't use the correct initializers for static spinlocks: ERROR: Use of SPIN_LOCK_UNLOCKED is deprecated: see Documentation/spinlocks.txt This is fine, but Documentation/spinlocks.txt isn't very clear on how to _use_ the new initializers for static variables. To save people time in the future, I added two small examples of how to fix old-style static initializers to be more lockdep friendly. Signed-off-by: Mark Fasheh <mfasheh@suse.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2008-04-11Move sched-rt-group.txt to scheduler/J. Bruce Fields2-0/+2
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2008-04-11Documentation: move rpc-cache.txt to filesystems/J. Bruce Fields3-2/+2
This file is nfs-related. (Maybe Documentation/filesystems/ would benefit from a separate nfs/ directory at some point.) Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2008-04-11Documentation: move nfsroot.txt to filesystems/J. Bruce Fields7-14/+14
Documentation/ is a little large, and filesystems/ seems an obvious place for this file. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2008-04-11Spell out behavior of atomic_dec_and_lock() in kerneldocJ. Bruce Fields1-0/+3
A little more detail here wouldn't hurt. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2008-04-11Fix "$(AS) -traditional" compile breakage caused by asmlinkage_protectHeiko Carstens1-0/+3
git commit 54a015104136974262afa4b8ddd943ea70dec8a2 ("asmlinkage_protect replaces prevent_tail_call") causes this build failure on s390: AS arch/s390/kernel/entry64.o In file included from arch/s390/kernel/entry64.S:14: include/linux/linkage.h:34: error: syntax error in macro parameter list make[1]: *** [arch/s390/kernel/entry64.o] Error 1 make: *** [arch/s390/kernel] Error 2 and some other architectures. The reason is that some architectures add the "-traditional" flag to the invocation of $(AS), which disables variadic macro argument support. So just surround the new define with an #ifndef __ASSEMBLY__ to prevent any side effects on asm code. Cc: Roland McGrath <roland@redhat.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds3-16/+15
* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: i2c-tiny-usb: New VID/PID pair i2c-davinci: Fix lost interrupt i2c-ibm_iic: Fast mode parm desc fixup
2008-04-11Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds26-195/+344
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: [NETNS][IPV6] tcp - assign the netns for timewait sockets [IPV4]: Fix byte value boundary check in do_ip_getsockopt(). BNX2X: Correct bringing chip out of reset [NETFILTER]: nf_nat: autoload IPv4 connection tracking [NETFILTER]: xt_hashlimit: fix mask calculation [XFRM]: xfrm_user: fix selector family initialization rt61pci: rt61pci_beacon_update do not free skb twice ssb-mipscore: Fix interrupt vectors ssb-pcicore: Fix IRQ TPS flag handling mac80211: use short_preamble mode from capability if ERP IE not present [NET]: Undo code bloat in hot paths due to print_mac(). [TCP]: Don't allow FRTO to take place while MTU is being probed [TCP]: tcp_simple_retransmit can cause S+L [TCP]: Fix NewReno's fast rexmit/recovery problems with GSOed skb [TCP]: Restore 2.6.24 mark_head_lost behavior for newreno/fack nl80211: fix STA AID bug b43legacy: fix bcm4303 crash iwlwifi: fix n-band association problem ipw2200: set MAC address on radiotap interface libertas: fix mode initialization problem
2008-04-11Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds2-52/+98
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC]: Fix several regset and ptrace bugs.
2008-04-11signalfd: fix for incorrect SI_QUEUE user data reportingDavide Libenzi1-1/+6
Michael Kerrisk found out that signalfd was not reporting back user data pushed using sigqueue: http://groups.google.com/group/linux.kernel/msg/9397cab8551e3123 The following patch makes signalfd report back the ssi_ptr and ssi_int members of the signalfd_siginfo structure. Signed-off-by: Davide Libenzi <davidel@xmailserver.org> Acked-by: Michael Kerrisk <mtk.manpages@googlemail.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11pnp: increase number of devices supported per protocolBjorn Helgaas1-1/+1
Increase the PNP "number of devices" limit. We currently use an unsigned char, which limits us to 256 devices per protocol. This patch changes that to an unsigned int. Not all backends can take advantage of this: we limit ISAPNP to 10 devices in isapnp_cfg_begin(), and PNPBIOS is limited to 256 devices because the BIOS interfaces use a one-byte device node number. But there is no limit on the number of PNPACPI devices we may have. Large HP Integrity machines have more than 256, which causes the current "unsigned char number" to wrap around. This causes errors like this: pnp: PnP ACPI init kobject_add failed for 00:00 with -EEXIST, don't try to register things with the same name in the same directory. Call Trace: [<a000000100010720>] show_stack+0x40/0xa0 [<a0000001000107b0>] dump_stack+0x30/0x60 [<a0000001001dbdf0>] kobject_add+0x290/0x2c0 [<a0000001002bfd40>] device_add+0x160/0x860 [<a0000001002c0470>] device_register+0x30/0x60 [<a00000010026ba70>] __pnp_add_device+0x130/0x180 [<a00000010026bb70>] pnp_add_device+0xb0/0xe0 [<a0000001007f2730>] pnpacpi_add_device+0x510/0x5a0 [<a0000001007f2810>] pnpacpi_add_device_handler+0x50/0x80 This patch increases the limit to fix this PNPACPI problem. It should not have any adverse effect on ISAPNP or PNPBIOS because their limits are still enforced in the backends. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11md: close a livelock window in handle_parity_checks5Dan Williams1-22/+29
If a failure is detected after a parity check operation has been initiated, but before it completes handle_parity_checks5 will never quiesce operations on the stripe. Explicitly handle this case by "canceling" the parity check, i.e. clear the STRIPE_OP_CHECK flags and queue the stripe on the handle list again to refresh any non-uptodate blocks. Kernel versions >= 2.6.23 are susceptible. Cc: <stable@kernel.org> Cc: NeilBrown <neilb@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11cciss: error: implicit declaration of function 'sg_init_table'Mike Pagano1-0/+1
This patch adds the missing include directive <linux/scatterlist.h> to the cciss.c source file.   This was discovered by our release team when building the kernel for the Alpha architecture. Errors were found as references to functions 'sg_init_table' and 'sg_page' do not exist without the include for Alpha. Signed-off-by: Mike Pagano <mpagano@gentoo.org> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: <mike.miller@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11rtc: fix platform driver hotplug/coldplugKay Sievers19-2/+33
Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is prefixed with "platform:". Add MODULE_ALIAS() to the hotpluggable RTC platform drivers, to re-enable module auto loading. [dbrownell@users.sourceforge.net: more drivers, minor fix] Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Greg KH <greg@kroah.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11watchdog: fix platform driver hotplug/coldplugKay Sievers12-0/+20
Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is prefixed with "platform:". Add MODULE_ALIAS() to the hotpluggable watchdog drivers, to re-enable auto loading. [dbrownell@users.sourceforge.net: more drivers; registration fixes] Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Wim Van Sebroeck <wim@iguana.be> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11usb host: fix platform driver hotplug/coldplugKay Sievers16-6/+30
Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is prefixed with "platform:". Add MODULE_ALIAS() to the hotpluggable USB HCDs, to allow re-enable auto loading. [dbrownell@users.sourceforge.net: more drivers; registration fixes] Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11usb gadget: fix platform driver hotplug/coldplugKay Sievers8-2/+11
Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is prefixed with "platform:". Add MODULE_ALIAS() to the hotpluggable usb peripheral drivers, to re-eable module auto loading. [dbrownell@users.sourceforge.net: registration fixes] Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11spi: fix platform driver hotplug/coldplugKay Sievers14-7/+31
Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is prefixed with "platform:". Add MODULE_ALIAS() to the hotpluggable SPI platform drivers, to allow module auto loading. [dbrownell@users.sourceforge.net: more drivers: registration fixes] Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11eventfd/kaio integration fixDavide Libenzi1-8/+9
Jeff Roberson discovered a race when using kaio eventfd based notifications. When it occurs it can lead tomissed wakeups and hung userspace. This patch fixes the race by moving the notification inside the spinlocked section of kaio. The operation is safe since eventfd spinlock and kaio one are unrelated. Signed-off-by: Davide Libenzi <davidel@xmailserver.org> Cc: Zach Brown <zach.brown@oracle.com> Cc: Jeff Roberson <jroberson@chesapeake.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11rtc: rtc-s35390a.c needs the bitreverse libraryRandy Dunlap1-0/+1
rtc-s35390a uses BITREVERSE functions so it needs to select that config symbol to ensure that the functions are built. drivers/built-in.o: In function `s35390a_set_datetime': linux-2.6.25-rc8-git7/drivers/rtc/rtc-s35390a.c:144: undefined reference to `byte_rev_table' drivers/built-in.o: In function `s35390a_get_datetime': linux-2.6.25-rc8-git7/drivers/rtc/rtc-s35390a.c:163: undefined reference to `byte_rev_table' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11cgroups: include hierarchy ids in /proc/<pid>/cgroupPaul Menage1-0/+1
Extend the /proc/<pid>/cgroup file to include the appropriate hierarchy ID on each line. Currently this ID isn't really needed since a hierarchy can be completely identified by the set of subsystems bound to it, but this is likely to change in the near future in order to support stateless subsystems and merging/rebinding of subsystems. Getting this change into 2.6.25 reduces the need for an API change later. Signed-off-by: Paul Menage <menage@google.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Pavel Emelyanov <xemul@openvz.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11i2c-tiny-usb: New VID/PID pairTill Harbaum1-4/+8
I have recently bought some USB PIDs from EZPrototypes for my USB projects and one will be for the i2c-tiny-usb. I have not yet started to use the new one in the official i2c-tiny-usb firmware since i think it makes sense to get the change into the kernel before releasing a modified firmware. This patch adds support for the EZPrototypes USB vid/pid pair used in later i2c-tiny-usb firmware versions (avrusb v1.06 and up, usbtiny v2.06 and up). Signed-off-by: Till Harbaum <Till@Harbaum.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-11i2c-davinci: Fix lost interruptTroy Kisky1-11/+6
DAVINCI_I2C_STR_REG is a write 1 to clear register, so don't use a read/modify/write cycle. Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com> Acked-by: Dirk Behme <dirk.behme@gmail.com> Signed-off-by: Kevin Hilman <khilman@mvista.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-11i2c-ibm_iic: Fast mode parm desc fixupPaul Mundt1-1/+1
Noticed this when grepping for fast mode module params, the i2c-ibm_iic driver was using a non-existent variable for MODULE_PARM_DESC. Fix it up to reflect what it's actually supposed to be describing. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-11[NETNS][IPV6] tcp - assign the netns for timewait socketsDaniel Lezcano1-0/+1
Copy the network namespace from the socket to the timewait socket. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Acked-by: Mark Lord <mlord@pobox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-11Add commentary about the new "asmlinkage_protect()" macroLinus Torvalds2-0/+24
It's really a pretty ugly thing to need, and some day it will hopefully be obviated by teaching gcc about the magic calling conventions for the low-level system call code, but in the meantime we can at least add big honking comments about why we need these insane and strange macros. I took my comments from my version of the macro, but I ended up deciding to just pick Roland's version of the actual code instead (with his prettier syntax that uses vararg macros). Thus the previous two commits that actually implement it. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11asmlinkage_protect sys_io_geteventsRoland McGrath1-0/+1
Use asmlinkage_protect in sys_io_getevents, because GCC for i386 with CONFIG_FRAME_POINTER=n can decide to clobber an argument word on the stack, i.e. the user struct pt_regs. Here the problem is not a tail call, but just the compiler's use of the stack when it inlines and optimizes the body of the called function. This seems to avoid it. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11asmlinkage_protect replaces prevent_tail_callRoland McGrath6-22/+44
The prevent_tail_call() macro works around the problem of the compiler clobbering argument words on the stack, which for asmlinkage functions is the caller's (user's) struct pt_regs. The tail/sibling-call optimization is not the only way that the compiler can decide to use stack argument words as scratch space, which we have to prevent. Other optimizations can do it too. Until we have new compiler support to make "asmlinkage" binding on the compiler's own use of the stack argument frame, we have work around all the manifestations of this issue that crop up. More cases seem to be prevented by also keeping the incoming argument variables live at the end of the function. This makes their original stack slots attractive places to leave those variables, so the compiler tends not clobber them for something else. It's still no guarantee, but it handles some observed cases that prevent_tail_call() did not. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11x86: Simplify cpu_idle_waitVenki Pallipadi2-72/+22
This patch also resolves hangs on boot: http://lkml.org/lkml/2008/2/23/263 http://bugzilla.kernel.org/show_bug.cgi?id=10093 The bug was causing once-in-few-reboots 10-15 sec wait during boot on certain laptops. Earlier commit 40d6a146629b98d8e322b6f9332b182c7cbff3df added smp_call_function in cpu_idle_wait() to kick cpus that are in tickless idle. Looking at cpu_idle_wait code at that time, code seemed to be over-engineered for a case which is rarely used (while changing idle handler). Below is a simplified version of cpu_idle_wait, which just makes a dummy smp_call_function to all cpus, to make them come out of old idle handler and start using the new idle handler. It eliminates code in the idle loop to handle cpu_idle_wait. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11lzo: fix typo in decompressorHarvey Harrison1-1/+1
Shift of a LE value seems strange, probably meant to shift the cpu-order variable as in the prvious section of the switch statement. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Acked-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11FRV: Don't make smp_{r, w, }mb() interpolate MEMBAR when CONFIG_SMP=n [try #2]David Howells1-6/+15
Don't make smp_{r,w,}mb() interpolate a MEMBAR instruction when CONFIG_SMP=n as SMP memory barries on UP systems should interpolate a compiler barrier only. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11FRV: Make NOMMU-mode work with base addresses other than 0xC0000000 [try #2]David Howells2-8/+1
Make NOMMU-mode work with base addresses other than 0xC0000000 by: (1) Giving the code that sets up the protection registers the right address in __sdram_base. Rather than being hard coded to 0xC0000000, the value of __page_offset is obtained from the linker script. (2) Eliminate the check in __switch_to() that verifies the current thread info is in the 0xCxxxxxxx region. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11FRV: Add support for emulation of userspace atomic ops [try #2]David Howells4-1/+268
Use traps 120-126 to emulate atomic cmpxchg32, xchg32, and XOR-, OR-, AND-, SUB- and ADD-to-memory operations for userspace. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11FRV: Move STACK_TOP_MAX up [try #2]David Howells1-1/+1
Move STACK_TOP_MAX up so that we don't try moving the stack above it as that causes setup_arg_pages() to malfunction. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11FRV: Handle update_mmu_cache() being called when current->mm is NULL [try #2]David Howells1-5/+14
Handle update_mmu_cache() being called when current->mm is NULL. We cache static TLB mappings for the current page table in DAMPR4 and DAMPR5 on the theory that the next data lookup is likely to be in the same general region, and thus is likely to be mapped by the same page table. However, we can't get this information if we can't access the appropriate mm_struct. If current->mm is NULL, we just clear the cache in the knowledge that the TLB miss handlers will load it. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11Merge branch 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6Linus Torvalds21-148/+153
* 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6: [XFS] Ensure "both" features2 slots are consistent [XFS] Fix superblock features2 field alignment problem [XFS] remove shouting-indirection macros from xfs_sb.h
2008-04-11Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds2-28/+12
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: cfq-iosched: do not leak ioc_data across iosched switches splice: fix infinite loop in generic_file_splice_read()