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* Revert "semaphore: fix"Linus Torvalds2008-05-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit bf726eab3711cf192405d21688a4b21e07b6188a, as it has been reported to cause a regression with processes stuck in __down(), apparently because some missing wakeup. Quoth Sven Wegener: "I'm currently investigating a regression that has showed up with my last git pull yesterday. Bisecting the commits showed bf726e "semaphore: fix" to be the culprit, reverting it fixed the issue. Symptoms: During heavy filesystem usage (e.g. a kernel compile) I get several compiler processes in uninterruptible sleep, blocking all i/o on the filesystem. System is an Intel Core 2 Quad running a 64bit kernel and userspace. Filesystem is xfs on top of lvm. See below for the output of sysrq-w." See http://lkml.org/lkml/2008/5/10/45 for full report. In the meantime, we can just fix the BKL performance regression by reverting back to the good old BKL spinlock implementation instead, since any sleeping lock will generally perform badly, especially if it tries to be fair. Reported-by: Sven Wegener <sven.wegener@stealer.net> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Make <asm-x86/spinlock.h> use ACCESS_ONCE()Linus Torvalds2008-05-10
| | | | | | ..instead of cooking up its own uglier local version of it. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Move ACCESS_ONCE() to <linux/compiler.h>Linus Torvalds2008-05-10
| | | | | | | | | It actually makes much more sense there, and we do tend to need it for non-RCU usage too. Moving it to <linux/compiler.h> will allow some other cases that have open-coded the same logic to use the same helper function that RCU has used. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2008-05-09
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6: (21 commits) Blackfin Serial Driver: abstract away DLAB differences into header Blackfin Serial Driver: macro away the IER differences between processors [Blackfin] arch: remove useless IRQ_SW_INT defines [Blackfin] arch: protect linux/usb/musb.h include until the driver gets mainlined [Blackfin] arch: protect linux/usb/isp1362.h include until the driver gets mainlined [Blackfin] arch: add EBIU supporting for BF54x EZKIT SMSC LAN911x/LAN921x families embedded ethernet driver [Blackfin] arch: Set spi flash partition on bf527 as like bf548. [Blackfin] arch: fix bug - Remove module will not free L1 memory used [Blackfin] arch: fix wrong header name in comment [Blackfin] arch: Fix BUG - spi flash on bf527 ezkit would fail at mount [Blackfin] arch: add twi_lcd and twi_keypad i2c board info to bf527-ezkit [Blackfin] arch: Add physmap partition for BF527-EZkit [Blackfin] arch: fix gdb testing regression [Blackfin] arch: disable single stepping when delivering a signal [Blackfin] arch: Delete unused (copied from m68k) entries in asm-offsets.c. [Blackfin] arch: In the double fault handler, set up the PT_RETI slot [Blackfin] arch: Support for CPU_FREQ and NOHZ [Blackfin] arch: Functional power management support: Add CPU and platform voltage scaling support [Blackfin] arch: fix bug - breaking the atomic sections code. [Blackfin] arch: Equalize include files: Add VR_CTL masks ...
| * Blackfin Serial Driver: abstract away DLAB differences into headerMike Frysinger2008-05-06
| | | | | | | | | | | | Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| * Blackfin Serial Driver: macro away the IER differences between processorsMike Frysinger2008-05-06
| | | | | | | | | | | | Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| * [Blackfin] arch: remove useless IRQ_SW_INT definesMichael Hennerich2008-05-09
| | | | | | | | | | | | | | | | | | | | | | IRQ_SW_INT1 and IRQ_SW_INT2 obsolete: Remove useless defines Fix SYS_IRQS Keep numbering scheme, so we don't break existing configurations. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| * [Blackfin] arch: protect linux/usb/musb.h include until the driver gets ↵Mike Frysinger2008-05-09
| | | | | | | | | | | | | | | | mainlined Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| * [Blackfin] arch: protect linux/usb/isp1362.h include until the driver gets ↵Mike Frysinger2008-05-09
| | | | | | | | | | | | | | | | mainlined Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| * [Blackfin] arch: add EBIU supporting for BF54x EZKIT SMSC LAN911x/LAN921x ↵Michael Hennerich2008-05-07
| | | | | | | | | | | | | | | | families embedded ethernet driver Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| * [Blackfin] arch: Set spi flash partition on bf527 as like bf548.Grace Pan2008-05-06
| | | | | | | | | | | | Signed-off-by: Grace Pan <grace.pan@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| * [Blackfin] arch: fix bug - Remove module will not free L1 memory usedMeihui Fan2008-05-06
| | | | | | | | | | | | | | | | | | Remove module will not free L1 memory used which caused by memory access after free. This patch fixes it. Signed-off-by: Meihui Fan <mhfan@hhcn.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| * [Blackfin] arch: fix wrong header name in commentMike Frysinger2008-05-06
| | | | | | | | | | | | Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| * [Blackfin] arch: Fix BUG - spi flash on bf527 ezkit would fail at mountMichael Hennerich2008-05-06
| | | | | | | | | | | | | | | | BF527-EZKit features 16MBit M25P16 flash Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| * [Blackfin] arch: add twi_lcd and twi_keypad i2c board info to bf527-ezkitBryan Wu2008-05-06
| | | | | | | | | | | | | | | | - JP3 should be installed for STAMP enable - IRQ for twi_keypad driver is IRQ_PF8 Signed-off-by: Bryan Wu <cooloney@kernel.org>
| * [Blackfin] arch: Add physmap partition for BF527-EZkitMichael Hennerich2008-05-06
| | | | | | | | | | | | Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| * [Blackfin] arch: fix gdb testing regressionBernd Schmidt2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | When transferring to IRQ5 from an exception, save SYSCFG in memory across the transfer and clear the trace bit. When we get a single step exception, check whether we can safely clear the trace bit in SYSCFG. We can (and should) clear it after the first instruction of the interrupt handler; the first insn saves SYSCFG to the stack in all handlers. Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| * [Blackfin] arch: disable single stepping when delivering a signalBernd Schmidt2008-05-06
| | | | | | | | | | | | | | | | | | | | When delivering a signal, disable single stepping but call ptrace_notify if it was enabled before. The idea was taken from the x86 port. Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| * [Blackfin] arch: Delete unused (copied from m68k) entries in asm-offsets.c.Bernd Schmidt2008-05-06
| | | | | | | | | | | | | | | | | | Fix some really ancient code that was correct only for the m68k port. Delete unused (i.e. copied from m68k) entries in asm-offsets.c. Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| * [Blackfin] arch: In the double fault handler, set up the PT_RETI slotBernd Schmidt2008-05-06
| | | | | | | | | | | | | | | | | | In the double fault handler, set up the PT_RETI slot so that we print out the correct return address in the dumping code. Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| * [Blackfin] arch: Support for CPU_FREQ and NOHZVitja Makarov2008-05-06
| | | | | | | | | | Singed-off-by: Vitja Makarov <vitja.makarov@gmail.com>
| * [Blackfin] arch: Functional power management support: Add CPU and platform ↵Michael Hennerich2008-05-06
| | | | | | | | | | | | | | | | voltage scaling support Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| * [Blackfin] arch: fix bug - breaking the atomic sections code.Bernd Schmidt2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | The following cleanup patch: add __user markings to a few userspace system functions mysteriously added a "&" operator that doesn't belong in there, breaking the atomic sections code. Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| * [Blackfin] arch: Equalize include files: Add VR_CTL masksMichael Hennerich2008-05-06
| | | | | | | | | | | | Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| * [Blackfin] arch: Cleanup Kconfig, fix comment and make sure we exclude ↵Michael Hennerich2008-05-06
| | | | | | | | | | | | | | | | CCLK=SCLK for some configurations Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds2008-05-09
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: [CIFS] fix build warning [CIFS] Fixed build warning in is_ip [CIFS] cleanup cifsd completion [CIFS] Remove over-indented code in find_unc(). [CIFS] fix typo [CIFS] Remove duplicate call to mode_to_acl [CIFS] convert usage of implicit booleans to bool [CIFS] fixed compatibility issue with samba refferal request [CIFS] Fix statfs formatting [CIFS] Adds to dns_resolver checking if the server name is an IP addr and skipping upcall in this case. [CIFS] Fix spelling mistake [CIFS] Update cifs version number
| * | [CIFS] fix build warningSteve French2008-05-08
| | | | | | | | | | | | Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | [CIFS] Fixed build warning in is_ipIgor Mammedov2008-05-08
| | | | | | | | | | | | | | | Signed-off-by: Igor Mammedov <niallain@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | [CIFS] cleanup cifsd completionSteve French2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Was a holdover from the old kernel_thread based cifsd code. We needed to know that the thread had set the task variable before proceeding. Now that kthread_run returns the new task, this doesn't appear to be needed anymore. As best I can tell, this sleep was intended to try to prevent cifs_umount from freeing the cifsSesInfo struct before cifsd had exited. Now that cifsd is using the kthread API, we know that when kthread_stop returns that cifsd has exited, so I don't think this is needed any longer. Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: Christop Hellwig <hch@infradead.org> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | [CIFS] Remove over-indented code in find_unc().Steve French2008-05-06
| | | | | | | | | | | | | | | Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | Merge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6Steve French2008-05-06
| |\ \
| * | | [CIFS] fix typoSteve French2008-05-02
| | | | | | | | | | | | | | | | Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | | [CIFS] Remove duplicate call to mode_to_aclSteve French2008-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current logic in cifs_setattr calls mode_to_acl twice on mode changes if cifsacl is enabled. Remove the duplicate call. Signed-off-by: Jeff Layton <jlayton@redhat.com> CC: Shirish Pargaonkar <shirishp@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | | [CIFS] convert usage of implicit booleans to boolSteve French2008-04-28
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | | Merge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6Igor Mammedov2008-04-28
| |\ \ \
| * | | | [CIFS] fixed compatibility issue with samba refferal requestIgor Mammedov2008-04-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | treeName part is canonicalized to '/' path separator Signed-off-by: Igor Mammedov <niallain@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | | | [CIFS] Fix statfs formattingSteve French2008-04-28
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | | | Merge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6Steve French2008-04-28
| |\ \ \ \
| * | | | | [CIFS] Adds to dns_resolver checking if the server name is an IP addr and ↵Steve French2008-04-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | skipping upcall in this case. Signed-off-by: Igor Mammedov <niallain@gmail.com> Signed-off-by: sfrench@us.ibm.com
| * | | | | Merge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6Steve French2008-04-25
| |\ \ \ \ \
| * | | | | | [CIFS] Fix spelling mistakeSteve French2008-04-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Noticed by Joe Perches Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | | | | | [CIFS] Update cifs version numberSteve French2008-04-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Steve French <sfrench@us.ibm.com>
* | | | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds2008-05-09
|\ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (37 commits) SH: catch negative denormal_subf1() retval in denormal_add() sh: Fix DMAC base address for SH7709S sh: update smc91x platform data for se7206. sh: Stub in cpu_to_node() and friends for NUMA build. sh: intc register modify fix sh: no high level trigger on some sh3 cpus sh: clean up sh7710 and sh7720 intc tables sh: add interrupt ack code to sh3 sh: unify external irq pin code for sh3 sh-sci: avoid writing to nonexistent registers sh-sci: sh7722 lacks scsptr registers sh-sci: improve sh7722 support sh: reset hardware from early printk sh: drain and wait for early printk sh: use sci_out() for early printk sh: add memory resources to /proc/iomem sh: add kernel bss resource sh: fix sh7705 interrupt vector typo sh: update smc91x platform data for se7722 sh: update smc91x platform data for MigoR ...
| * | | | | | | SH: catch negative denormal_subf1() retval in denormal_add()Roel Kluin2008-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'ix' is unsigned but denormal_subf1() may return a negative int. Signed-off-by: Roel Kluin <12o3l@tiscali.nl> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | | | | sh: Fix DMAC base address for SH7709SSteve Glendinning2008-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On SH7709S, DMAC can be found at 0xa4000020 (as with most of the other sh3 cpu subtypes). Split out definition of DMAC base address from definitions of DMTE irqs. Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | | | | sh: update smc91x platform data for se7206.Paul Mundt2008-05-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Follows the se7722 change. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | | | | sh: Stub in cpu_to_node() and friends for NUMA build.Paul Mundt2008-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | | | | sh: intc register modify fixMagnus Damm2008-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make sure register modifications stay atomic. Fixes processors with shared priority register masking. Dual bitmap masking is unaffected. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | | | | sh: no high level trigger on some sh3 cpusMagnus Damm2008-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The processor models sh7706, sh7707 and sh7709 don't support high level trigger sense configuration. And the intc code looks like crap these days so what's the difference. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | | | | sh: clean up sh7710 and sh7720 intc tablesMagnus Damm2008-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clean up the intc tables by removing unneeded #ifdefs. The vector list is what selects which interrupt sources that should be added, having unsupported bitfields listed is ok as long as the vector is excluded from the list. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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