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2007-12-05spi: spi_bfin: update handling of delay-after-deselectBryan Wu
Move cs_chg_udelay handling (specific to this driver) to cs_deactive(), fixing a bug when some SPI LCD driver needs delay after cs_deactive. Fix bug reported by Cameron Barfield <cbarfield@cyberdata.net> https://blackfin.uclinux.org/gf/project/uclinux-dist/forum/?action=ForumBrowse&forum_id=39&_forum_action=ForumMessageBrowse&thread_id=23630&feedback=Message%20replied. Cc: Cameron Barfield <cbarfield@cyberdata.net> Signed-off-by: Bryan Wu <bryan.wu@analog.com> 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>
2007-12-05spi: spi_bfin: bugfix for 8..16 bit word sizesBryan Wu
Fix bug in u16_cs_chg_reader to read data_len-2 bytes data firstly, then read out the last 2 bytes data Signed-off-by: Bryan Wu <bryan.wu@analog.com> 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>
2007-12-05spi: spi_bfin: handle multiple spi_mastersBryan Wu
Move global SPI regs_base and dma_ch to struct driver_data. Test on BF54x SPI Flash with 2 spi_master devices enabled. Signed-off-by: Bryan Wu <bryan.wu@analog.com> 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>
2007-12-05spi: spi_bfin: relocate spin/waitsSonic Zhang
Move spin/waits to more correct locations in bfin SPI driver. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> 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>
2007-12-05spi: spi_bfin: change handling of communication parametersSonic Zhang
Fix SPI driver to work with SPI flash ST M25P16 on bf548 Currently the SPI driver enables the SPI controller and sets the SPI baud register for each SPI transfer. But they should never be changed within a SPI message session, in which several SPI transfers are pumped. This patch moves SPI setting to the begining of a message session, and never disables SPI controller until an error occurs. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> 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>
2007-12-05spi: spi_bfin, rearrange portmux callsSonic Zhang
Move pin muxing to setup and cleanup methods. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> 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>
2007-12-05spi: spi_bfin uses portmux for additional bussesSonic Zhang
Use portmux mechanism to support SPI busses 1 and 2, instead of just the original bus 0. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> 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>
2007-12-05spi: spi_bfin uses platform device resourcesBryan Wu
Update spi driver to support multi-ports by using platform resources; tested on STAMP537+SPI_MMC, other boards need more testing. Plus other minor updates. Signed-off-by: Bryan Wu <bryan.wu@analog.com> 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>
2007-12-05spi: spi_bfin, don't bypass spi frameworkMike Frysinger
Prevent people from setting bits in ctl_reg that the SPI framework already handles, hopefully we can one day drop ctl_reg completely Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> 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>
2007-12-05spi: spi_bfin handles spi_transfer.cs_changeBryan Wu
Respect per-transfer cs_change field (protocol tweaking support) by adding and using cs_active/cs_deactive functions. Signed-off-by: Bryan Wu <bryan.wu@analog.com> 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>
2007-12-05spi: spi_bfin cleanups, error handlingBryan Wu
Cleanup and error handling - add error handling in SPI bus driver with selecting clients - use proper defines to access Blackfin MMRs - remove useless SSYNCs - cleaner use of portmux calls Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> 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>
2007-12-05spi: bfin spi uses portmux callsMichael Hennerich
Use new Blackfin portmux interface, add error handling. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> 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>
2007-12-05spi: initial BF54x SPI supportBryan Wu
Initial BF54x SPI support - support BF54x SPI0 - clean up some code (whitespace etc) - will support multiports in the future - start using portmux calls Signed-off-by: Bryan Wu <bryan.wu@analog.com> 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>
2007-12-05spi: use simplified spi_sync() calling conventionMarc Pignat
Given the patch which simplifies the spi_sync calling convention, this one updates the callers of that routine which tried using it according to the previous specification. (Most didn't.) Signed-off-by: Marc Pignat <marc.pignat@hevs.ch> 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>
2007-12-05spi: simplify spi_sync() calling conventionMarc Pignat
Simplify spi_sync calling convention, eliminating the need to check both the return value AND the message->status. In consequence, this corrects misbehaviours of spi_read and spi_write (which only checked the former) and their callers. Signed-off-by: Marc Pignat <marc.pignat@hevs.ch> 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>
2007-12-05spi: at25 driver is for EEPROM not FLASHDavid Brownell
Add comment to at25 driver that it's for EEPROM chips, not FLASH chips ... the AT25 series has both types of chip, and sometimes they're even pin-compatible. The command sets are different, as is the treatment of erasure. (FLASH needs explicit erasure, but with EEPROM it's implicit.) Note that all vendors seem to have this same confusion in their *25* series SPI memory parts. 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>
2007-12-05SPI: use mutex not semaphoreDavid Brownell
Make spi_write_then_read() use a mutex not a binary semaphore. 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>
2007-12-05Add EXPORT_SYMBOL(ksize);Tetsuo Handa
mm/slub.c exports ksize(), but mm/slob.c and mm/slab.c don't. It's used by binfmt_flat, which can be built as a module. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: Christoph Lameter <clameter@sgi.com> Cc: Matt Mackall <mpm@selenic.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05mm/backing-dev.c: fix percpu_counter_destroy call bug in bdi_initDenis Cheng
this call should use the array index j, not i. But with this approach, just one int i is enough, int j is not needed. Signed-off-by: Denis Cheng <crquan@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05ufs: fix nexstep dir block sizeEvgeniy Dushistov
This patch fixes regression, introduced since 2.6.16. NextStep variant of UFS as OpenStep uses directory block size equals to 1024. Without this change, ufs_check_page fails in many cases. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru> Cc: Dave Bailey <dsbailey@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05RTC: assure proper memory ordering with respect to RTC_DEV_BUSY flagJiri Kosina
We must make sure that the RTC_DEV_BUSY flag has proper lock semantics, i.e. that the RTC_DEV_BUSY stores clearing the flag don't get reordered before the preceeding stores and loads and vice versa. Spotted by Nick Piggin. Signed-off-by: Jiri Kosina <jkosina@suse.cz> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: David Brownell <david-b@pacbell.net> 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>
2007-12-05fix clone(CLONE_NEWPID)Eric W. Biederman
Currently we are complicating the code in copy_process, the clone ABI, and if we fix the bugs sys_setsid itself, with an unnecessary open coded version of sys_setsid. So just simplify everything and don't special case the session and pgrp of the initial process in a pid namespace. Having this special case actually presents to user space the classic linux startup conditions with session == pgrp == 0 for /sbin/init. We already handle sending signals to processes in a child pid namespace. We need to handle sending signals to processes in a parent pid namespace for cases like SIGCHILD and SIGIO. This makes nothing extra visible inside a pid namespace. So this extra special case appears to have no redeeming merits. Further removing this special case increases the flexibility of how we can use pid namespaces, by not requiring the initial process in a pid namespace to be a daemon. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Pavel Emelyanov <xemul@openvz.org> Cc: Sukadev Bhattiprolu <sukadev@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-05aio: only account I/O wait time in read_events if there are active requestsJeff Moyer
On 2.6.24, top started showing 100% iowait on one CPU when a UML instance was running (but completely idle). The UML code sits in io_getevents waiting for an event to be submitted and completed. Fix this by checking ctx->reqs_active before scheduling to determine whether or not we are waiting for I/O. Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Cc: Zach Brown <zach.brown@oracle.com> Cc: Miklos Szeredi <miklos@szeredi.hu> Cc: Jeff Dike <jdike@addtoit.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-04Merge branch 'upstream-fixes' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 * 'upstream-fixes' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: PHY: Add the phy_device_release device method. gianfar: fix compile warning pasemi_mac: Fix reuse of free'd skb SMC911X: Fix using of dereferenced skb after netif_rx sky2: recovery deadlock fix Fix memory corruption in fec_mpc52xx Don't claim to do IPv6 checksum offload cxgb - revert file mode changes.
2007-12-04PHY: Add the phy_device_release device method.Anton Vorontsov
Lately I've got this nice badness on mdio bus removal: Device 'e0103120:06' does not have a release() function, it is broken and must be fixed. ------------[ cut here ]------------ Badness at drivers/base/core.c:107 NIP: c015c1a8 LR: c015c1a8 CTR: c0157488 REGS: c34bdcf0 TRAP: 0700 Not tainted (2.6.23-rc5-g9ebadfbb-dirty) MSR: 00029032 <EE,ME,IR,DR> CR: 24088422 XER: 00000000 ... [c34bdda0] [c015c1a8] device_release+0x78/0x80 (unreliable) [c34bddb0] [c01354cc] kobject_cleanup+0x80/0xbc [c34bddd0] [c01365f0] kref_put+0x54/0x6c [c34bdde0] [c013543c] kobject_put+0x24/0x34 [c34bddf0] [c015c384] put_device+0x1c/0x2c [c34bde00] [c0180e84] mdiobus_unregister+0x2c/0x58 ... Though actually there is nothing broken, it just device subsystem core expects another "pattern" of resource managment. This patch implement phy device's release function, thus we're getting rid of this badness. Also small hidden bug fixed, hope none other introduced. ;-) Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04gianfar: fix compile warningGrant Likely
Eliminate an uninitialized variable warning. The code is correct, but a pointer to the automatic variable 'addr' is passed to dma_alloc_coherent. Since addr has never been initialized, and the compiler doesn't know what dma_alloc_coherent will do with it, it complains. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04pasemi_mac: Fix reuse of free'd skbOlof Johansson
Turns out we're freeing the skb when we detect CRC error, but we're not clearing out info->skb. We could either clear it and have the stack reallocate it, or just leave it and the rx ring refill code will reuse the one that was allocated. Reusing a freed skb obviously caused some nasty crashes of various kind, as reported by Brent Baude and David Woodhouse. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04SMC911X: Fix using of dereferenced skb after netif_rxWang Chen
Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04sky2: recovery deadlock fixStephen Hemminger
Prevent deadlock in sky2 recovery logic. sky2_down calls napi_synchronize which gets stuck if napi was already disabled. Fix by rearranging slightly and not calling napi_disable until after both ports are stopped. The napi_disable probably is being overly paranoid, but it is safe now. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04Fix memory corruption in fec_mpc52xxJon Smirl
The mpc5200 fec driver is corrupting memory. This patch fixes two bugs where the wrong skb was being referenced. Signed-off-by: Jon Smirl <jonsmirl@gmail.com> Acked-by: Domen Puncer <domen.puncer@telargo.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04Don't claim to do IPv6 checksum offloadDavid Woodhouse
Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04cxgb - revert file mode changes.Divy Le Ray
revert inavertant file mode changes Signed-off-by: Divy Le Ray <divy@chelsio.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04pata_amd/pata_via: de-couple programming of PIO/MWDMA and UDMA timingsBartlomiej Zolnierkiewicz
* Don't program UDMA timings when programming PIO or MWDMA modes. This has also a nice side-effect of fixing regression added by commit 681c80b5d96076f447e8101ac4325c82d8dce508 ("libata: correct handling of SRST reset sequences") (->set_piomode method for PIO0 is called before ->cable_detect method which checks UDMA timings to get the cable type). * Bump driver version. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Tested-by: "Thomas Lindroth" <thomas.lindroth@gmail.com> Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Tejun Heo <htejun@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04ahci: add the Device IDs of MCP79 AHCI controller to ahci.cpeerchen
Add the device IDs of legacy mode of MCP79 AHCI controller to ahci.c Signed-off-by: Peer Chen <peerchen@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04sata_mv: Warn about HPT RocketRAID BIOS treatment of "Legacy" drivesMark Lord
The Highpoint RocketRAID boards using Marvell 7042 chips overwrite the 9th sector of attached drives at boot time, when those drives are configured as "Legacy" (the default) in the HighPoint BIOS. This kills GRUB, and probably other stuff. But it all happens *before* Linux is even loaded. So, for now we'll log a WARNING when such boards are detected, and advise users to configure BIOS "JBOD" volumes instead, which don't appear to suffer from this problem. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2007-12-04sata_nv: don't use legacy DMA in ADMA mode (v3)Robert Hancock
We need to run any DMA command with result taskfile requested in ADMA mode when the port is in ADMA mode, otherwise it may try to use the legacy DMA engine in ADMA mode which is not allowed. Enforce this with BUG_ON() since data corruption could potentially result if this happened. Also, fail any attempt to try and issue NCQ commands with result taskfile requested, since the hardware doesn't allow this. Signed-off-by: Robert Hancock <hancockr@shaw.ca> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6Linus Torvalds
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: [S390] Make sure the restore psw masks are initialized. [S390] Fix compile error on 31bit without preemption [S390] dcssblk: prevent early access without own make_request function [S390] cio: add missing reprobe loop end statement [S390] cio: Issue SenseID per path.
2007-12-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86: x86: arch_register_cpu() section fix x86: free_cache_attributes() section fix x86: add the word 'WARNING' in check_nmi_watchdog() output x86: revert CONFIG_X86_HT semantics change
2007-12-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-schedLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched: sched: default to more agressive yield for SCHED_BATCH tasks sched: fix crash in sys_sched_rr_get_interval()
2007-12-04MAINTAINERS: remove the MTRR entryAdrian Bunk
I haven't seen Richard doing MTRR related work for quite some time, and the "X86 ARCHITECTURE" entry in MAINTAINERS already covers the people currently responsible for this code. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-04drivers/s390/net/ctcmain.c: fix build bugIngo Molnar
SET_MODULE_OWNER() is obsolete. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-04x86: arch_register_cpu() section fixAndrew Morton
fix this on i386 allnoconfig: WARNING: vmlinux.o(.text+0x6f2e): Section mismatch: reference to .init.text:register_cpu (between 'arch_register_cpu' and 'text_poke') Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-12-04x86: free_cache_attributes() section fixAdrian Bunk
free_cache_attributes() must be __cpuinit since it calls the __cpuinit cache_remove_shared_cpu_map(). This patch fixes the following section mismatch reported by Chris Clayton: ... WARNING: vmlinux.o(.text+0x90b6): Section mismatch: reference to .init.text:cache_remove_shared_cpu_map (between 'free_cache_attributes' and 'show_level') ... Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-12-04x86: add the word 'WARNING' in check_nmi_watchdog() outputDon Zickus
Our automated test suite looks for keywords like error, fail, warning in the boot log. In the case when the nmi watchdog is determined to be stuck in check_nmi_watchdog(), none of those keywords are displayed. This patch adds a keyword, "WARNING:", so it makes it easier to notice when the nmi watchdog isn't working correctly. Also add a proper KERN_WARNING mark to this printout. Signed-off-by: Don Zickus <dzickus@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-12-04x86: revert CONFIG_X86_HT semantics changeAdrian Bunk
The recent Kconfig changes in x86 resulted in CONFIG_X86_HT no longer being set if (X86_32 && MK8). After grep'ing through the tree I think the problem is that different places have different assumptions about the semantics of CONFIG_X86_HT, either: - hyperthreading or - multicore This should be sorted out properly, but until then we should keep the 2.6.23 status quo. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-12-04sched: default to more agressive yield for SCHED_BATCH tasksIngo Molnar
do more agressive yield for SCHED_BATCH tuned tasks: they are all about throughput anyway. This allows a gentler migration path for any apps that relied on stronger yield. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-12-04sched: fix crash in sys_sched_rr_get_interval()Ingo Molnar
Luiz Fernando N. Capitulino reported that sched_rr_get_interval() crashes for SCHED_OTHER tasks that are on an idle runqueue. The fix is to return a 0 timeslice for tasks that are on an idle runqueue. (and which are not running, obviously) this also shrinks the code a bit: text data bss dec hex filename 47903 3934 336 52173 cbcd sched.o.before 47885 3934 336 52155 cbbb sched.o.after Reported-by: Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-12-04[S390] Make sure the restore psw masks are initialized.Heiko Carstens
In case of TRACE_IRQFLAGS the restore psw masks will not be initialized if noexec is turned on. This will lead to an immediate system crash. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-12-04[S390] Fix compile error on 31bit without preemptionChristian Borntraeger
Commit b8e7a54cd06b0b0174029ef3a7f5a1415a2c28f2 introduced a compile error if CONFIG_PREEMPT is not set: arch/s390/kernel/built-in.o: In function `cleanup_io_leave_insn': /space/kvm/arch/s390/kernel/entry.S:(.text+0xbfce): undefined reference to `preempt_schedule_irq' This patch hides preempt_schedule_irq if CONFIG_PREEMPT is not set. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-12-04[S390] dcssblk: prevent early access without own make_request functionChristian Borntraeger
When loading a dcss segment with the dcssblk driver, sometimes the following kind of message appears: bio too big device dcssblk0 (8 > 0) Buffer I/O error on device dcssblk0, logical block 172016 .. The fix is to move the disk registration after setting the make_request function, to avoid calls into generic_make_request for dcssblock without having the make_request function set up properly. Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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