12 years ago[IA64] disable irq's and check need_resched before safe_halt
Dimitri Sivanich [Tue, 7 Aug 2007 13:49:32 +0000]
[IA64] disable irq's and check need_resched before safe_halt

While sending interrupts to a cpu to repeatedly wake a thread, on occasion
that thread will take a full timer tick cycle (4002 usec in my case)
to wakeup.

The problem concerns a race condition in the code around the safe_halt()
call in the default_idle() routine.  Setting 'nohalt' on the kernel
command line causes the long wakeups to disappear.

void
default_idle (void)
{
        local_irq_enable();
        while (!need_resched()) {
-->             if (can_do_pal_halt)
-->                     safe_halt();
                else

A timer tick could arrive between the check for !need_resched and the
actual call to safe_halt() (which does a pal call to PAL_HALT_LIGHT).
By the time the timer tick completes, a thread that might now need to run
could get held up for as long as a timer tick waiting for the halted cpu.

I'm proposing that we disable irq's and check need_resched again before
calling safe_halt().  Does anyone see any problem with this approach?

Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

12 years agoLinux 2.6.23-rc3
Linus Torvalds [Mon, 13 Aug 2007 04:25:24 +0000]
Linux 2.6.23-rc3

12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched
Linus Torvalds [Sun, 12 Aug 2007 18:06:45 +0000]
Merge git://git./linux/kernel/git/mingo/linux-2.6-sched

* git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched:
  sched: run_rebalance_domains: s/SCHED_IDLE/CPU_IDLE/
  sched: fix sleeper bonus
  sched: make global code static

12 years agogenirq: mark io_apic level interrupts to avoid resend
Thomas Gleixner [Sun, 12 Aug 2007 15:46:36 +0000]
genirq: mark io_apic level interrupts to avoid resend

Level type interrupts do not need to be resent.  It was also found that
some chipsets get confused in case of the resend.

Mark the ioapic level type interrupts as such to avoid the resend
functionality in the generic irq code.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agogenirq: suppress resend of level interrupts
Thomas Gleixner [Sun, 12 Aug 2007 15:46:35 +0000]
genirq: suppress resend of level interrupts

Level type interrupts are resent by the interrupt hardware when they are
still active at irq_enable().

Suppress the resend mechanism for interrupts marked as level.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agogenirq: cleanup mismerge artifact
Thomas Gleixner [Sun, 12 Aug 2007 15:46:34 +0000]
genirq: cleanup mismerge artifact

Commit 5a43a066b11ac2fe84cf67307f20b83bea390f83: "genirq: Allow fasteoi
handler to retrigger disabled interrupts" was erroneously applied to
handle_level_irq().  This added the irq retrigger / resend functionality
to the level irq handler.

Revert the offending bits.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 years agosched: run_rebalance_domains: s/SCHED_IDLE/CPU_IDLE/
Oleg Nesterov [Sun, 12 Aug 2007 16:08:19 +0000]
sched: run_rebalance_domains: s/SCHED_IDLE/CPU_IDLE/

rebalance_domains(SCHED_IDLE) looks strange (typo), change it to CPU_IDLE.

the effect of this bug was slightly more agressive idle-balancing on
SMP than intended.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

12 years agosched: fix sleeper bonus
Ingo Molnar [Sun, 12 Aug 2007 16:08:19 +0000]
sched: fix sleeper bonus

Peter Ziljstra noticed that the sleeper bonus deduction code
was not properly rate-limited: a task that scheduled more
frequently would get a disproportionately large deduction.
So limit the deduction to delta_exec.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

12 years agosched: make global code static
Adrian Bunk [Sun, 12 Aug 2007 16:08:19 +0000]
sched: make global code static

This patch makes the following needlessly global code static:

- arch_reinit_sched_domains()
- struct attr_sched_mc_power_savings
- struct attr_sched_smt_power_savings

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

12 years agoMerge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux...
Linus Torvalds [Sun, 12 Aug 2007 09:58:23 +0000]
Merge branch 'release' of git://git./linux/kernel/git/lenb/linux-acpi-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (28 commits)
  ACPI: thermal: add DMI hooks to handle AOpen's broken Award BIOS
  ACPI: thermal: create "thermal.act=" to disable or override active trip point
  ACPI: thermal: create "thermal.nocrt" to disable critical actions
  ACPI: thermal: create "thermal.psv=" to override passive trip points
  ACPI: thermal: expose "thermal.tzp=" to set global polling frequency
  ACPI: thermal: create "thermal.off=1" to disable ACPI thermal support
  ACPI: thinkpad-acpi: fix sysfs paths in documentation
  ACPI: static
  ACPI EC: remove potential deadlock from EC
  ACPI: dock: Send key=value pair instead of plain value
  ACPI: bay: send envp with uevent - fix
  acpi-cpufreq: Fix some x86/x86-64 acpi-cpufreq driver issues
  ACPI: fix "Time Problems with 2.6.23-rc1-gf695baf2"
  ACPI: thinkpad-acpi: change thinkpad-acpi input default and kconfig help
  ACPI: EC: fix run-together printk lines
  ACPI: sbs: remove dead code
  ACPI: EC: acpi_ec_remove(): fix use-after-free
  ACPI: EC: Switch from boot_ec as soon as we find its desc in DSDT.
  ACPI: EC: fix build warning
  ACPI: EC: If ECDT is not found, look up EC in DSDT.
  ...

12 years agoi386: Fix broken mmiocfg accesses
Linus Torvalds [Sun, 12 Aug 2007 09:23:16 +0000]
i386: Fix broken mmiocfg accesses

Commit 3320ad994afb2c44ad34b3b34c3c5cf0da297331 broke mmio config space
accesses totally on i386 - it dropped the "reg" offset to the address.

Cc: dean gaudet <dean@arctic.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agoDo not replace whole memcpy in apply alternatives
Petr Vandrovec [Sun, 12 Aug 2007 08:12:52 +0000]
Do not replace whole memcpy in apply alternatives

apply_alternatives uses memcpy() to apply alternatives.  Which has the
unfortunate effect that while applying memcpy alternative to memcpy
itself it tries to overwrite itself with nops - which causes #UD fault
as it overwrites half of an instruction in copy loop, and from this
point on only possible outcome is triplefault and reboot.

So let's overwrite only first two instructions of memcpy - as long as
the main memcpy loop is not in first two bytes it will work fine.

Signed-off-by: Petr Vandrovec <petr@vandrovec.name>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agoPull sbs into release branch
Len Brown [Sun, 12 Aug 2007 04:21:22 +0000]
Pull sbs into release branch

13 years agoPull processor into release branch
Len Brown [Sun, 12 Aug 2007 04:21:08 +0000]
Pull processor into release branch

13 years agoPull fluff into release branch
Len Brown [Sun, 12 Aug 2007 04:20:59 +0000]
Pull fluff into release branch

13 years agoPull ec into release branch
Len Brown [Sun, 12 Aug 2007 04:20:41 +0000]
Pull ec into release branch

13 years agoPull dock-bay into release branch
Len Brown [Sun, 12 Aug 2007 04:20:33 +0000]
Pull dock-bay into release branch

13 years agoPull bugzilla-8842 into release branch
Len Brown [Sun, 12 Aug 2007 04:19:23 +0000]
Pull bugzilla-8842 into release branch

13 years agoPull bugzilla-8768 into release branch
Len Brown [Sun, 12 Aug 2007 04:18:11 +0000]
Pull bugzilla-8768 into release branch

13 years agoPull bugzilla-3774 into release branch
Len Brown [Sun, 12 Aug 2007 04:17:59 +0000]
Pull bugzilla-3774 into release branch

13 years agopull asus sony thinkpad into release branch
Len Brown [Sun, 12 Aug 2007 04:17:12 +0000]
pull asus sony thinkpad into release branch

13 years agoACPI: thermal: add DMI hooks to handle AOpen's broken Award BIOS
Len Brown [Sun, 12 Aug 2007 04:13:02 +0000]
ACPI: thermal: add DMI hooks to handle AOpen's broken Award BIOS

Use DMI to:
1. enable polling (BIOS thermal events are broken)
2. disable active trip points (BIOS fan control is broken)
3. disable passive trip point (BIOS hard-codes it too low)

The actual temperature reading does work,
and with the aid of polling, the critical
trip point should work too.

http://bugzilla.kernel.org/show_bug.cgi?id=8842

Signed-off-by: Len Brown <len.brown@intel.com>

13 years agoACPI: thermal: create "thermal.act=" to disable or override active trip point
Len Brown [Sun, 12 Aug 2007 04:12:54 +0000]
ACPI: thermal: create "thermal.act=" to disable or override active trip point

thermal.act=-1 disables all active trip points
in all ACPI thermal zones.

thermal.act=C, where C > 0, overrides all lowest temperature
active trip points in all thermal zones to C degrees Celsius.
Raising this trip-point may allow you to keep your system silent
up to a higher temperature.  However, it will not allow you to
raise the lowest temperature trip point above the next higher
trip point (if there is one).  Lowering this trip point may
kick in the fan sooner.

Note that overriding this trip-point will disable any BIOS attempts
to implement hysteresis around the lowest temperature trip point.
This may result in the fan starting and stopping frequently
if temperature frequently crosses C.

WARNING: raising trip points above the manufacturer's defaults
may cause the system to run at higher temperature and shorten
its life.

Signed-off-by: Len Brown <len.brown@intel.com>

13 years agoACPI: thermal: create "thermal.nocrt" to disable critical actions
Len Brown [Sun, 12 Aug 2007 04:12:44 +0000]
ACPI: thermal: create "thermal.nocrt" to disable critical actions

thermal.nocrt=1 disables actions on _CRT and _HOT
ACPI thermal zone trip-points.  They will be marked
as <disabled> in /proc/acpi/thermal_zone/*/trip_points.

There are two cases where this option is used:

1. Debugging a hot system crossing valid trip point.

   If your system fan is spinning at full speed,
   be sure that the vent is not clogged with dust.
   Many laptops have very fine thermal fins that are easily blocked.

   Check that the processor fan-sink is properly seated,
   has the proper thermal grease, and is really spinning.

   Check for fan related options in BIOS SETUP.
   Sometimes there is a performance vs quiet option.
   Defaults are generally the most conservative.

   If your fan is not spinning, yet /proc/acpi/fan/
   has files in it, please file a Linux/ACPI bug.

   WARNING: you risk shortening the lifetime of your
   hardware if you use this parameter on a hot system.
   Note that this refers to all system components,
   including the disk drive.

2. Working around a cool system crossing critical
   trip point due to erroneous temperature reading.

   Try again with CONFIG_HWMON=n
   There is known potential for conflict between the
   the hwmon sub-system and the ACPI BIOS.
   If this fixes it, notify lm-sensors@lm-sensors.org
   and linux-acpi@vger.kernel.org

   Otherwise, file a Linux/ACPI bug, or notify
   just linux-acpi@vger.kernel.org.

Signed-off-by: Len Brown <len.brown@intel.com>

13 years agoACPI: thermal: create "thermal.psv=" to override passive trip points
Len Brown [Sun, 12 Aug 2007 04:12:35 +0000]
ACPI: thermal: create "thermal.psv=" to override passive trip points

"thermal.psv=-1" disables passive trip points
for all ACPI thermal zones.

"thermal.psv=C", where 'C' is degrees Celsius,
overrides all existing passive trip points
for all ACPI thermal zones.

thermal.psv is checked at module load time,
and in response to trip-point change events.

Note that if the system does not deliver thermal zone
temperature change events near the new trip-point,
then it will not be noticed.  To force your custom
trip point to be noticed, you may need to enable polling:
eg. thermal.tzp=3000 invokes polling every 5 minutes.

Note that once passive thermal throttling is invoked,
it has its own internal Thermal Sampling Period (_TSP),
that is unrelated to _TZP.

WARNING: disabling or raising a thermal trip point
may result in increased running temperature and
shorter hardware lifetime on some systems.

Signed-off-by: Len Brown <len.brown@intel.com>

13 years agoACPI: thermal: expose "thermal.tzp=" to set global polling frequency
Len Brown [Sun, 12 Aug 2007 04:12:26 +0000]
ACPI: thermal: expose "thermal.tzp=" to set global polling frequency

Thermal Zone Polling frequency (_TZP) is an optional ACPI object
recommending the rate that the OS should poll the associated thermal zone.

If _TZP is 0, no polling should be used.
If _TZP is non-zero, then the platform recommends that
the OS poll the thermal zone at the specified rate.
The minimum period is 30 seconds.
The maximum period is 5 minutes.

(note _TZP and thermal.tzp units are in deci-seconds,
 so _TZP = 300 corresponds to 30 seconds)

If _TZP is not present, ACPI 3.0b recommends that the
thermal zone be polled at an "OS provided default frequency".

However, common industry practice is:
1. The BIOS never specifies any _TZP
2. High volume OS's from this century never poll any thermal zones

Ie. The OS depends on the platform's ability to
provoke thermal events when necessary, and
the "OS provided default frequency" is "never":-)

There is a proposal that ACPI 4.0 be updated to reflect
common industry practice -- ie. no _TZP, no polling.

The Linux kernel already follows this practice --
thermal zones are not polled unless _TZP is present and non-zero.

But thermal zone polling is useful as a workaround for systems
which have ACPI thermal control, but have an issue preventing
thermal events.  Indeed, some Linux distributions still
set a non-zero thermal polling frequency for this reason.

But rather than ask the user to write a polling frequency
into all the /proc/acpi/thermal_zone/*/polling_frequency
files, here we simply document and expose the already
existing module parameter to do the same at system level,
to simplify debugging those broken platforms.

Note that thermal.tzp is a module-load time parameter only.

Signed-off-by: Len Brown <len.brown@intel.com>

13 years agoACPI: thermal: create "thermal.off=1" to disable ACPI thermal support
Len Brown [Sun, 12 Aug 2007 04:12:17 +0000]
ACPI: thermal: create "thermal.off=1" to disable ACPI thermal support

"thermal.off=1" disables all ACPI thermal support at boot time.

CONFIG_ACPI_THERMAL=n can do this at build time.
"# rmmod thermal" can do this at run time,
as long as thermal is built as a module.

WARNING: On some systems, disabling ACPI thermal support
will cause the system to run hotter and reduce the
lifetime of the hardware.

Signed-off-by: Len Brown <len.brown@intel.com>

13 years agoACPI: thinkpad-acpi: fix sysfs paths in documentation
Henrique de Moraes Holschuh [Sat, 11 Aug 2007 03:08:33 +0000]
ACPI: thinkpad-acpi: fix sysfs paths in documentation

The documentation used "thinkpad-acpi" to refer to the directories in
sysfs, while it should have been using "thinkpad_acpi".  Thanks to Hugh
Dickins for the error report.

I wish I could just call the module and everything else by the proper
name with the "-", instead of using these ugly translations to "_".

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Len Brown <len.brown@intel.com>

13 years agoACPI: static
Adrian Bunk [Fri, 10 Aug 2007 20:45:18 +0000]
ACPI: static

Make the needlessly global "acpi_event_seqnum" static.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>

13 years agoACPI EC: remove potential deadlock from EC
Alexey Starikovskiy [Fri, 10 Aug 2007 20:45:18 +0000]
ACPI EC: remove potential deadlock from EC

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>

13 years agoACPI: dock: Send key=value pair instead of plain value
Holger Macht [Fri, 10 Aug 2007 20:10:32 +0000]
ACPI: dock: Send key=value pair instead of plain value

Send key=value pair along with the uevent instead of a plain value so that
userspace (udev) can handle it like common environment variables.

Signed-off-by: Holger Macht <hmacht@suse.de>
Acked-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Cc: Stephan Berberig <s.berberig@arcor.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>

13 years agoACPI: bay: send envp with uevent - fix
Stephan Berberig [Fri, 10 Aug 2007 20:10:31 +0000]
ACPI: bay: send envp with uevent - fix

There must not be a new-line character in the uevent.  Otherwise, udev gets
confused.  Thanks to Kay Sievers for pointing it out.

Signed-off-by: Stephan Berberig <s.berberig@arcor.de>
Cc: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>

13 years agoMerge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6
Linus Torvalds [Sat, 11 Aug 2007 23:18:58 +0000]
Merge branch 'for-linus' of git://git390.osdl.marist.edu/linux-2.6

* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
  [S390] monwriter: Serialization bug for multithreaded applications.
  [S390] vmur: diag14 only works with buffers below 2GB
  [S390] vmur: add "top of queue" sanity check for reader open
  [S390] vmur: reject open on z/VM reader files with status HOLD
  [S390] vmur: use DECLARE_COMPLETION_ONSTACK to keep lockdep happy
  [S390] vmur: allocate single record buffers instead of one big data buffer
  [S390] remove DEFAULT_MIGRATION_COST
  [S390] qdio: make sure data structures are correctly aligned.
  [S390] hypfs: implement show_options
  [S390] cio: avoid memory leak on error in css_alloc_subchannel().

13 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
Linus Torvalds [Sat, 11 Aug 2007 23:09:49 +0000]
Merge branch 'merge' of git://git./linux/kernel/git/paulus/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  [POWERPC] Fix size check for hugetlbfs
  [POWERPC] Fix initialization and usage of dma_mask
  [POWERPC] Fix more section mismatches in head_64.S
  [POWERPC] Revert "[POWERPC] Add 'mdio' to bus scan id list for platforms with QE UEC"
  [POWERPC] PS3: Update ps3_defconfig
  [POWERPC] PS3: Remove text saying PS3 support is incomplete
  [POWERPC] PS3: Fix storage probe logic
  [POWERPC] cell: Move SPU affinity init to spu_management_of_ops
  [POWERPC] Fix potential duplicate entry in SLB shadow buffer

13 years agoMerge branch 'async-tx-fixes-for-linus' of git://lost.foo-projects.org/~dwillia2...
Linus Torvalds [Sat, 11 Aug 2007 23:03:27 +0000]
Merge branch 'async-tx-fixes-for-linus' of git://lost.foo-projects.org/~dwillia2/git/iop

* 'async-tx-fixes-for-linus' of git://lost.foo-projects.org/~dwillia2/git/iop:
  async_tx: update MAINTAINERS for async_tx and iop-adma

13 years agoMerge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfashe...
Linus Torvalds [Sat, 11 Aug 2007 23:01:34 +0000]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/mfasheh/ocfs2

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2:
  ocfs2: set non-default s_time_gran during mount
  ocfs2: Retry sendpage() if it returns EAGAIN
  ocfs2: Fix rename/extend race
  [2.6 patch] ocfs2_insert_extent(): remove dead code
  ocfs2: Fix max offset calculations
  ocfs2: check ia_size limits in setattr
  ocfs2: Fix some casting errors related to file writes
  ocfs2: use s_maxbytes directly in ocfs2_change_file_space()
  ocfs2: Restrict inode changes in ocfs2_update_inode_atime()

13 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Sat, 11 Aug 2007 23:01:06 +0000]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  BLOCK: Hide the contents of linux/bio.h if CONFIG_BLOCK=n
  sysace: HDIO_GETGEO has it's own method for ages
  drivers/block/cpqarray.c: better error handling and kmalloc + memset conversion to k[cz]alloc
  drivers/block/cciss.c: kmalloc + memset conversion to kzalloc
  Clean up duplicate includes in drivers/block/
  Fix remap handling by blktrace
  [PATCH] remove mm/filemap.c:file_send_actor()

13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched
Linus Torvalds [Sat, 11 Aug 2007 22:58:37 +0000]
Merge git://git./linux/kernel/git/mingo/linux-2.6-sched

* git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched:
  sched debug: dont print kernel address in /proc/sched_debug
  sched: fix typo in the FAIR_GROUP_SCHED branch
  sched: improve rq-clock overflow logic

13 years agoi386: Fix double fault handler
Chuck Ebbert [Fri, 10 Aug 2007 20:31:11 +0000]
i386: Fix double fault handler

The new percpu code has apparently broken the doublefault handler
when CONFIG_DEBUG_SPINLOCK is set. Doublefault is handled by
a hardware task, making the check

        SPIN_BUG_ON(lock->owner == current, lock, "recursion");

fault because it uses the FS register to access the percpu data
for current, and that register is zero in the new TSS. (The trace
I saw was on 2.6.20 where it was GS, but it looks like this will
still happen with FS on 2.6.22.)

Initializing FS in the doublefault_tss should fix it.

AK: Also fix broken ptr_ok() and turn printks into KERN_EMERG
AK: And add a PANIC prefix to make clear the system will hang
AK: (e.g. x86-64 will recover)

Signed-off-by: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agoi386: Fix start_kernel warning
Andi Kleen [Fri, 10 Aug 2007 20:31:10 +0000]
i386: Fix start_kernel warning

Fix

WARNING: vmlinux.o(.text+0x183): Section mismatch: reference to .init.text:start_kernel (between 'is386' and 'check_x87')

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agox86_64: vdso.lds in arch/x86_64/vdso/.gitignore
Pete Zaitcev [Fri, 10 Aug 2007 20:31:09 +0000]
x86_64: vdso.lds in arch/x86_64/vdso/.gitignore

Create arch/x86_64/vdso/.gitignore and put vdso.lds into it.

Signed-off-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agoi386: Add warning in Documentation that zero-page is not a stable ABI
Andi Kleen [Fri, 10 Aug 2007 20:31:08 +0000]
i386: Add warning in Documentation that zero-page is not a stable ABI

Some people writing boot loaders seem to falsely belief the 32bit zero page is a
stable interface for out of tree code like the real mode boot protocol. Add a comment
clarifying that is not true.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agoi386: Use global flag to disable broken local apic timer on AMD CPUs.
Andi Kleen [Fri, 10 Aug 2007 20:31:07 +0000]
i386: Use global flag to disable broken local apic timer on AMD CPUs.

The Averatec 2370 and some other Turion laptop BIOS seems to program the
ENABLE_C1E MSR inconsistently between cores. This confuses the lapic
use heuristics because when C1E is enabled anywhere it seems to affect
the complete chip.

Use a global flag instead of a per cpu flag to handle this.
If any CPU has C1E enabled disabled lapic use.

Thanks to Cal Peake for debugging.

Cc: tglx@linutronix.de
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agoi386: really stop MCEs during code patching
Adrian Bunk [Fri, 10 Aug 2007 20:31:06 +0000]
i386: really stop MCEs during code patching

It's CONFIG_X86_MCE, not CONFIG_MCE.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agox86_64: Early segment setup for VT
Zachary Amsden [Fri, 10 Aug 2007 20:31:05 +0000]
x86_64: Early segment setup for VT

VT is very picky about when it can enter execution.
Get all segments setup and get LDT and TR into valid state to allow
VT execution under VMware and KVM (untested).

This makes the boot decompression run under VT, which makes it several
orders of magnitude faster on 64-bit Intel hardware.

Before, I was seeing times up to a minute or more to decompress a 1.3MB kernel
on a very fast box.

Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agoi386: Make patching more robust, fix paravirt issue
Andi Kleen [Fri, 10 Aug 2007 20:31:03 +0000]
i386: Make patching more robust, fix paravirt issue

Commit 19d36ccdc34f5ed444f8a6af0cbfdb6790eb1177 "x86: Fix alternatives
and kprobes to remap write-protected kernel text" uses code which is
being patched for patching.

In particular, paravirt_ops does patching in two stages: first it
calls paravirt_ops.patch, then it fills any remaining instructions
with nop_out().  nop_out calls text_poke() which calls
lookup_address() which calls pgd_val() (aka paravirt_ops.pgd_val):
that call site is one of the places we patch.

If we always do patching as one single call to text_poke(), we only
need make sure we're not patching the memcpy in text_poke itself.
This means the prototype to paravirt_ops.patch needs to change, to
marshal the new code into a buffer rather than patching in place as it
does now.  It also means all patching goes through text_poke(), which
is known to be safe (apply_alternatives is also changed to make a
single patch).

AK: fix compilation on x86-64 (bad rusty!)
AK: fix boot on x86-64 (sigh)
AK: merged with other patches

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agox86: Disable CLFLUSH support again
Andi Kleen [Fri, 10 Aug 2007 20:31:02 +0000]
x86: Disable CLFLUSH support again

It turns out CLFLUSH support is still not complete; we
flush the wrong pages.  Again disable it for the release.
Noticed by Jan Beulich who then also noticed a stupid typo later.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agox86_64: Don't mark __exitcall as __cold
Andi Kleen [Fri, 10 Aug 2007 20:31:01 +0000]
x86_64: Don't mark __exitcall as __cold

gcc currently doesn't support attributes on types, so we can't use it
function pointers.  This avoids some warnings on a gcc 4.3 build.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agox86_64: Calgary - Fix mis-handled PCI topology
Murillo Fernandes Bernardes [Fri, 10 Aug 2007 20:31:00 +0000]
x86_64: Calgary - Fix mis-handled PCI topology

Current code assumed that devices were directly connected to a Calgary
bridge, as it tried to get the iommu table directly from the parent bus
controller.

When we have another bridge between the Calgary/CalIOC2 bridge and the
device we should look upwards until we get to the top (Calgary/CalIOC2
bridge), where the iommu table resides.

Signed-off-by: Murillo Fernandes Bernardes <mfb@br.ibm.com>
Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agox86: Work around mmio config space quirk on AMD Fam10h
dean gaudet [Fri, 10 Aug 2007 20:30:59 +0000]
x86: Work around mmio config space quirk on AMD Fam10h

Some broken devices have been discovered to require %al/%ax/%eax registers
for MMIO config space accesses.  Modify mmconfig.c to use these registers
explicitly (rather than modify the global readb/writeb/etc inlines).

AK: also changed i386 to always use eax
AK: moved change to extended space probing to different patch
AK: reworked with inlines according to Linus' requirements.
AK: improve comments.

Signed-off-by: dean gaudet <dean@arctic.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agochanging include/asm-generic/pgtable.h for non-mmu
Greg Ungerer [Fri, 10 Aug 2007 20:01:20 +0000]
changing include/asm-generic/pgtable.h for non-mmu

There are some parts of include/asm-generic/pgtable.h that are relevant to
the non-mmu architectures.  To make it easier to include this from them I
would like to ifdef the relevant parts.

Without this there is a handful of functions that are referenced in here
that are not defined on many non-mmu architectures.  They could be defined
out of course, as an alternative approach.

Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agofinish i386 and x86-64 sysdata conversion
Muli Ben-Yehuda [Fri, 10 Aug 2007 20:01:19 +0000]
finish i386 and x86-64 sysdata conversion

This patch finishes the i386 and x86-64 ->sysdata conversion and hopefully
also fixes Riku's and Andy's observed bugs.  It is based on Yinghai Lu's
and Andy Whitcroft's patches (thanks!) with some changes:

- introduce pci_scan_bus_with_sysdata() and use it instead of
  pci_scan_bus() where appropriate. pci_scan_bus_with_sysdata() will
  allocate the sysdata structure and then call pci_scan_bus().
- always allocate pci_sysdata dynamically. The whole point of this
  sysdata work is to make it easy to do root-bus specific things
  (e.g., support PCI domains and IOMMU's). I dislike using a default
  struct pci_sysdata in some places and a dynamically allocated
  pci_sysdata elsewhere - the potential for someone indavertantly
  changing the default structure is too high.
- this patch only makes the minimal changes necessary, i.e., the NUMA node is
  always initialized to -1. Patches to do the right thing with regards
  to the NUMA node can build on top of this (either add a 'node'
  parameter to pci_scan_bus_with_sysdata() or just update the node
  when it becomes known).

The patch was compile tested with various configurations (e.g., NUMAQ,
VISWS) and run-time tested on i386 and x86-64.  Unfortunately none of my
machines exhibited the bugs so caveat emptor.

Andy, could you please see if this fixes the NUMA issues you've seen?
Riku, does this fix "pci=noacpi" on your laptop?

Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Chuck Ebbert <cebbert@redhat.com>
Cc: <riku.seppala@kymp.net>
Cc: Andy Whitcroft <apw@shadowen.org>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agoreadahead: docbook fix
Stephen Hemminger [Fri, 10 Aug 2007 20:01:16 +0000]
readahead: docbook fix

Minor docbook error since argument name in comment doesn't match function

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agoalpha: -Werror fixes for sys_titan.c
Jay Estabrook [Fri, 10 Aug 2007 20:01:12 +0000]
alpha: -Werror fixes for sys_titan.c

This code corrects the usage of the request_irq() routine.

Signed-off-by: Jay Estabrook <jay.estabrook@hp.com>
Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agolguest files should explicitly include asm/paravirt.h
Jes Sorensen [Fri, 10 Aug 2007 20:01:11 +0000]
lguest files should explicitly include asm/paravirt.h

Files using bits from paravirt.h should explicitly include it rather than
relying on it being pulled in by something else.

Signed-off-by: Jes Sorensen <jes@sgi.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agofix compilation with gcc 4.2
Peter Chubb [Fri, 10 Aug 2007 20:01:10 +0000]
fix compilation with gcc 4.2

gcc-4.2 is a lot more picky about its symbol handling.  EXPORT_SYMBOL no
longer works on symbols that are undefined or defined with static scope.

For example, with CONFIG_PROFILE off, I see:

  kernel/profile.c:206: error: __ksymtab_profile_event_unregister causes a section type conflict
  kernel/profile.c:205: error: __ksymtab_profile_event_register causes a section type conflict

This patch moves the EXPORTs inside the #ifdef CONFIG_PROFILE, so we
only try to export symbols that are defined.

Also, in kernel/kprobes.c there's an EXPORT_SYMBOL_GPL() for
jprobes_return, which if CONFIG_JPROBES is undefined is a static
inline and gives the same error.

And in drivers/acpi/resources/rsxface.c, there's an
ACPI_EXPORT_SYMBOPL() for a static symbol. If it's static, it's not
accessible from outside the compilation unit, so should bot be exported.

These three changes allow building a zx1_defconfig kernel with gcc 4.2
on IA64.

[akpm@linux-foundation.org: export jpobe_return properly]
Signed-off-by: Peter Chubb <peterc@gelato.unsw.edu.au>
Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agotimer: remove clockevents_unregister_notifier
Miao Xie [Fri, 10 Aug 2007 20:01:09 +0000]
timer: remove clockevents_unregister_notifier

I find a function(clockevents_unregister_notifier) which is not called by
anything in tree.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agospidev warning fix
David Brownell [Fri, 10 Aug 2007 20:01:09 +0000]
spidev warning fix

Git rid of "warning: passing arg 2 of `access_ok' makes pointer from integer
without a cast" reported on SH ...  most architectures use macros in that
test, SH uses inlined functions.

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>

13 years agocris: drivers/cdrom/Kconfig no longer exists
Adrian Bunk [Fri, 10 Aug 2007 20:01:08 +0000]
cris: drivers/cdrom/Kconfig no longer exists

scripts/kconfig/conf -d arch/cris/Kconfig
arch/cris/Kconfig:183: can't open file "drivers/cdrom/Kconfig"

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: Mikael Starvik <starvik@axis.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agoRCU: Remove prototype for nonexistent function synchronize_idle()
Josh Triplett [Fri, 10 Aug 2007 20:01:07 +0000]
RCU: Remove prototype for nonexistent function synchronize_idle()

synchronize_idle() sounds like an interesting function, but we don't
actually have it, so don't prototype it.  Introduced in commit
9b06e818985d139fd9e82c28297f7744e1b484e1, in 2005.

Signed-off-by: Josh Triplett <josh@kernel.org>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agohex_dump: add missing "const" qualifiers
Alan Stern [Fri, 10 Aug 2007 20:01:07 +0000]
hex_dump: add missing "const" qualifiers

Add missing "const" qualifiers to the print_hex_dump_bytes() library routines.

(akpm: rumoured to fix some compile warning somewhere)

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agomtdchar build fix
Andrew Morton [Fri, 10 Aug 2007 20:01:06 +0000]
mtdchar build fix

sh:

drivers/mtd/mtdchar.c: In function `mtd_mmap':
drivers/mtd/mtdchar.c:817: error: dereferencing pointer to incomplete type
drivers/mtd/mtdchar.c:817: error: `VM_SHARED' undeclared (first use in this function)
drivers/mtd/mtdchar.c:817: error: (Each undeclared identifier is reported only once

Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agofix serial buffer memory leak
Alan Cox [Fri, 10 Aug 2007 20:01:05 +0000]
fix serial buffer memory leak

Patch c5c34d4862e18ef07c1276d233507f540fb5a532 (tty: flush flip buffer on
ldisc input queue flush) introduces a race condition which can lead to memory
leaks.

The problem can be triggered when tcflush() is called when data are being
pushed to the line discipline driver by flush_to_ldisc().

flush_to_ldisc() releases tty->buf.lock when calling the line discipline
receive_buf function. At that poing tty_buffer_flush() kicks in and sets both
tty->buf.head and tty->buf.tail to NULL. When flush_to_ldisc() finishes, it
restores tty->buf.head but doesn't touch tty->buf.tail. This corrups the
buffer queue, and the next call to tty_buffer_request_room() will allocate a
new buffer and overwrite tty->buf.head. The previous buffer is then lost
forever without being released.

(Thanks to Laurent for the above text, for finding, disgnosing and reporting
the bug)

- Use tty->flags bits for the flush status.

- Wait for the flag to clear again before returning

- Fix the doc error noted

- Fix flush of empty queue leaving stale flushpending

[akpm@linux-foundation.org: cleanup]
Signed-off-by: Alan Cox <alan@redhat.com>
Acked-by: Paul Fulghum <paulkf@microgate.com>
Cc: Laurent Pinchart <laurentp@cse-semaphore.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agodocs: note about select in kconfig-language.txt
Jarek Poplawski [Fri, 10 Aug 2007 20:01:04 +0000]
docs: note about select in kconfig-language.txt

A warning note from Sam Ravnborg about kconfig's select evilness,
dependencies and the future (slightly corrected).

Signed-off-by: Jarek Poplawski <jarkao2@o2.pl>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agoDocumentation: sysrq, description of 'h' slightly inaccurate
Jesper Juhl [Fri, 10 Aug 2007 20:01:04 +0000]
Documentation: sysrq, description of 'h' slightly inaccurate

In Documentation/sysrq.txt, the description of 'h' says that any key not
listed *above* will generate help.  That's obviously not true since all the
keys listed below 'h' will do what they are described to do, not display help.
 So change the text so that it says that any key not listed in the table will
generate help, which is what really happens.

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agoupdate checkpatch.pl to version 0.09
Andy Whitcroft [Fri, 10 Aug 2007 20:01:03 +0000]
update checkpatch.pl to version 0.09

This version brings a number of new checks, and a number of bug
fixes.  Of note:

  - checks for spacing on round and square bracket combinations
  - loosening of the single statement brace checks, to allow
    them when they contain comments or where other blocks in a
    compound statement have them.
  - parks the multple declaration support
  - allows architecture defines in architecture specific headers

Andy Whitcroft (21):
      Version: 0.09
      loosen single statement brace checks
      fix up multiple declaration to avoid function arguments
      add some function space parenthesis check exceptions
      handle EXPORT_'s with parentheses in their names
      clean up some warnings in multi-line macro bracketing support
      park the multiple declaration checks
      make block brace checks count comments as a statement
      __volatile__ and __extension__ are not functions
      allow architecture specific defined within architecture includes
      check spacing on square brackets
      check spacing on parentheses
      ensure we apply checks to the part before start comment
      check #ifdef conditional spacing
      handle __init_refok and __must_check
      add noinline to inline checks
      prevent email addresses from tripping spacing checks
      handle typed initialiser spacing
      handle line contination as end of line
      add bool to the type matcher
      refine EXPORT_SYMBOL checks to handle pointers

Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agospi_mpc83xx: fix prescale modulus calculation
Anton Vorontsov [Fri, 10 Aug 2007 20:01:02 +0000]
spi_mpc83xx: fix prescale modulus calculation

Long ago I've noticed (but didn't pay much attention) that
spi_mpc83xx using PM calculations that differs from what
specs describe. I.e.

u8 pm = mpc83xx_spi->spibrg / (spi->max_speed_hz * 4);

While specs says: "The SPI baud rate generator clock source (either
system clock or system clock divided by 16, depending on DIV16 bit) is
divided by 4 * ([PM] + 1), a range from 4 to 64.".

Thus " - 1" is missing in the spi_mpc83xx's formula.

Why nobody noticed that bug? Probably because sysclk usually less then
user expects, e.g. you expect 200 MHz, but real clock is 198 MHz,
and integer rounding helps when this formula is used.

Suppose it's SPI in QE, SYSCLK at 198 MHz, thus SPIBRG at 99MHz, 25 MHz
requested.

PM = (99MHz / ( 25 MHz * 4 )), PM == 0, output SPICLK will be 24.75 MHz

At lower frequencies this bug is more noticeable, though.

And this bug shows itself in all its beauty if SYSCLK is equal or a bit
more than you expect (200 MHz SYSCLK, 100 MHz SPIBRG):
PM = (100MHz / ( 25 MHz * 4 )), PM == 1, output SPICLK will be 12.625 MHz!

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.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>

13 years agospi_mpc83xx: in "QE mode", use sysclk/2
Anton Vorontsov [Fri, 10 Aug 2007 20:01:01 +0000]
spi_mpc83xx: in "QE mode", use sysclk/2

For MPC8349E input to the SPI Baud Rate Generator is SYSCLK, but it's
SYSCLK/2 for MPC8323E (SPI in QE).  Fix this, and remove confusion by
renaming the mpc83xx_spi->sysclk member as mpc83xx_spi->spibrg.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.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>

13 years agokernel-parameters.txt : watchdog.txt should be wdt.txt
Gabriel C [Fri, 10 Aug 2007 20:01:00 +0000]
kernel-parameters.txt : watchdog.txt should be wdt.txt

Documentation/watchdog/watchdog.txt does not exist, it is Documentation/watchdog/wdt.txt

Signed-off-by: Gabriel Craciunescu <nix.or.die@googlemail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agoMemory hotplug document
Yasunori Goto [Fri, 10 Aug 2007 20:00:59 +0000]
Memory hotplug document

This is add a document for memory hotplug to describe "How to use" and
"Current status".

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agodrivers/char/pcmcia/cm40x0_cs.c: fix release function call
Daniel Ritz [Fri, 10 Aug 2007 20:00:58 +0000]
drivers/char/pcmcia/cm40x0_cs.c: fix release function call

cm4000_cs.c and cm4040_cs.c call the internal release function with
an argument of wrong type. this fixes bug #8485

Signed-off-by: Daniel Ritz <daniel.ritz@gmx.ch>
Cc: Bill McConnaughey <mcconnau@biochem.wustl.edu>
Cc: Natalie Protasevich <protasnb@gmail.com>
Cc: Harald Welte <laforge@gnumonks.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agoHibernation: do not try to mark invalid PFNs as nosave
Rafael J. Wysocki [Fri, 10 Aug 2007 20:00:57 +0000]
Hibernation: do not try to mark invalid PFNs as nosave

On some systems some PFNs reported by the early initialization code as
'nosave' may be invalid.  If we try to set the corresponding bits in the
hibernation bitmap, BUG_ON() in memory_bm_find_bit() will be triggered and
the system won't be able to boot (cf.
https://bugzilla.novell.com/show_bug.cgi?id=296242).

Prevent this from happening by verifying if the 'nosave' PFNs are valid in
mark_nosave_pages().

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agoeCryptfs: fix error handling in ecryptfs_init
Ryusuke Konishi [Fri, 10 Aug 2007 20:00:56 +0000]
eCryptfs: fix error handling in ecryptfs_init

ecryptfs_init() exits without doing any cleanup jobs if
ecryptfs_init_messaging() fails.  In that case, eCryptfs leaves
sysfs entries, leaks memory, and causes an invalid page fault.
This patch fixes the problem.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Acked-by: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agolinux-audit list is subscribers-only
Gabriel C [Fri, 10 Aug 2007 20:00:56 +0000]
linux-audit list is subscribers-only

Signed-off-by: Gabriel Craciunescu <nix.or.die@googlemail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agoRemove unused struct proc_dir_entry::set
Alexey Dobriyan [Fri, 10 Aug 2007 20:00:55 +0000]
Remove unused struct proc_dir_entry::set

After /proc/sys rewrite it was left unused.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agoFix missing numa_zonelist_order sysctl
Lee Schermerhorn [Fri, 10 Aug 2007 20:00:51 +0000]
Fix missing numa_zonelist_order sysctl

Misplaced #endif is hiding the numa_zonelist_order sysctl when !SECURITY.

Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agoeCryptfs: fix lookup error for special files
Ryusuke Konishi [Fri, 10 Aug 2007 20:00:51 +0000]
eCryptfs: fix lookup error for special files

When ecryptfs_lookup() is called against special files, eCryptfs generates
the following errors because it tries to treat them like regular eCryptfs
files.

Error opening lower file for lower_dentry [0xffff810233a6f150], lower_mnt [0xffff810235bb4c80], and flags
[0x8000]
Error opening lower_file to read header region
Error attempting to read the [user.ecryptfs] xattr from the lower file; return value = [-95]
Valid metadata not found in header region or xattr region; treating file as unencrypted

For instance, the problem can be reproduced by the steps below.

  # mkdir /root/crypt /mnt/crypt
  # mount -t ecryptfs /root/crypt /mnt/crypt
  # mknod /mnt/crypt/c0 c 0 0
  # umount /mnt/crypt
  # mount -t ecryptfs /root/crypt /mnt/crypt
  # ls -l /mnt/crypt

This patch fixes it by adding a check similar to directories and
symlinks.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Acked-by: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agoFRV: connect up fallocate
David Howells [Fri, 10 Aug 2007 20:00:50 +0000]
FRV: connect up fallocate

Connect up the fallocate() system call.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agomatroxfb: rectify jitter (G450/G550)
Paul A. Clarke [Fri, 10 Aug 2007 20:00:49 +0000]
matroxfb: rectify jitter (G450/G550)

This builds upon my previous attempts to resolve some jitter problems seen
with the Matrox G450 and G550 -based cards, including odd disparities observed
between x86 and Power -based machines in a somewhat less hackish way (removing
the hacked ifdefs).

Apparently, preference should be given to use the DVI PLL when frequencies
permit, the Standard PLL otherwise.  The max pixel clock for the panellink
interface is extracted from the PInS information on the card and used as a
limit to determine which PLL to use.

Signed-off-by: Paul A. Clarke <pc@us.ibm.com>
Acked-by: Petr Vandrovec <petr@vandrovec.name>
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agopvr2fb: update Documentation/fb/pvr2fb.txt
Adrian McMenamin [Fri, 10 Aug 2007 20:00:48 +0000]
pvr2fb: update Documentation/fb/pvr2fb.txt

The current version is very old and does not correctly specify how to
set the video mode.

Signed-off by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agopvr2fb: Consolidated cleanup of pvr2fb.c
Adrian McMenamin [Fri, 10 Aug 2007 20:00:48 +0000]
pvr2fb: Consolidated cleanup of pvr2fb.c

- better handling of the pvr2 registers based on more up to date information.

Testing shows that it seems to work pretty well at 16bpp, 24bpp and 32bpp -
including proper rendering of the boot logo at all levels (previously this was
a bit broken even at 16bpp) and giving white against black text.  Really
detailed testing (eg with X11) requires support for the maple bus - which
isn't (currently - next project assuming this is okay) available, but I have
no reason to think this is broken.

Signed-off by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agopvr2fb: Fix oops when pseudo_palette is written
Antonino A. Daplas [Fri, 10 Aug 2007 20:00:47 +0000]
pvr2fb: Fix oops when pseudo_palette is written

Reported by: Adrian McMenamin <adrianmcmenamin@gmail.com>

This driver will oops when the pseudo_palette[] is written as u32 but not when
written as u16.  When written as u32, it corrupts the adjacent 'mmio_base'
field of struct pvr2fb_par.  Fix by using framebuffer_alloc()/release() to
allocate struct fb_info and struct pvr2fb_par, and create the pseudo_palette[]
as part of struct pvr2fb_par.

Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agofbcon: Kill compile warning
Antonino A. Daplas [Fri, 10 Aug 2007 20:00:46 +0000]
fbcon: Kill compile warning

Fix compile warning ('map_override unused') if fbcon is compiled as a module
and CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=n.

[akpm@linux-foundation.org: cleanup]
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agostifb: detect cards in double buffer mode more reliably
Helge Deller [Fri, 10 Aug 2007 20:00:45 +0000]
stifb: detect cards in double buffer mode more reliably

Visualize-EG, Graffiti and A4450A graphics cards on PARISC can
be configured in double-buffer and standard mode, but the stifb
driver supports standard mode only.
This patch detects double-buffered cards more reliable.

It is a real bugfix for a very nasty problem for all parisc users which have
wrongly configured their graphic card.  The problem: The stifb graphics driver
will not detect that the card is wrongly configured and then nevertheless just
enables the graphics mode, which it shouldn't.  In the end, the user will see
no further updates / boot messages on the screen.

We had documented this problem already on our FAQ
(http://parisc-linux.org/faq/index.html#viseg "Why do I get corrupted graphics
with my Vis-EG/Graffiti/A4450A card?") but people still run into this problem.
 So having this fix in as early as possible can help us.

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Cc: <stable@kernel.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agodirect-io: fix error-path crashes
Badari Pulavarty [Fri, 10 Aug 2007 20:00:44 +0000]
direct-io: fix error-path crashes

Need to initialize map_bh.b_state to zero.  Otherwise, in case of a faulty
user-buffer its possible to go into dio_zero_block() and submit a page by
mistake - since it checks for buffer_new().

http://marc.info/?l=linux-kernel&m=118551339032528&w=2

akpm: Linus had a (better) patch to just do a kzalloc() in there, but it got
lost.  Probably this version is better for -stable anwyay.

Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Acked-by: Joe Jin <joe.jin@oracle.com>
Acked-by: Zach Brown <zach.brown@oracle.com>
Cc: gurudas pai <gurudas.pai@oracle.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agox86_64: fix HPET init race
Robin Holt [Fri, 10 Aug 2007 20:00:43 +0000]
x86_64: fix HPET init race

I have had four seperate system lockups attributable to this exact problem
in two days of testing.  Instead of trying to handle all the weird end
cases and wrap, how about changing it to look for exactly what we appear
to want.

The following patch removes a couple races in setup_APIC_timer.  One occurs
when the HPET advances the COUNTER past the T0_CMP value between the time
the T0_CMP was originally read and when COUNTER is read.  This results in
a delay waiting for the counter to wrap.  The other results from the counter
wrapping.

This change takes a snapshot of T0_CMP at the beginning of the loop and
simply loops until T0_CMP has changed (a tick has happened).

<later>

I have one small concern about the patch.  I am not sure it meets the intent
as well as it should.  I think we are trying to match APIC timer interrupts up
with the hpet counter increment.  The event which appears to be disturbing
this loop in our test environment is the NMI watchdog.  What we believe has
been happening with the existing code is the setup_APIC_timer loop has read
the CMP value, and the NMI watchdog code fires for the first time.  This
results in a series of icache miss slowdowns and by the time we get back to
things it has wrapped.

I think this code is trying to get the CMP as close to the counter value as
possible.  If that is the intent, maybe we should really be testing against a
"window" around the CMP.  Something like COUNTER = CMP+/2.  It appears COUNTER
should get advanced every 89nSec (IIRC).  The above seems like an unreasonably
small window, but may be necessary.  Without documentation, I am not sure of
the original intent with this code.

In summary, this code fixes my boot hangs, but since I am not certain of the
intent of the existing code, I am not certain this has not introduced new bugs
or unexpected behaviors.

Signed-off-by: Robin Holt <holt@sgi.com>
Acked-by: Andi Kleen <ak@suse.de>
Cc: Vojtech Pavlik <vojtech@suse.cz>
Cc: "Aaron Durbin" <adurbin@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agoBlackfin arch: after removing fs.h from mm.h, fix the broken on Blackfin arch
Bryan Wu [Fri, 10 Aug 2007 20:00:42 +0000]
Blackfin arch: after removing fs.h from mm.h, fix the broken on Blackfin arch

Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

13 years agoBLOCK: Hide the contents of linux/bio.h if CONFIG_BLOCK=n
David Howells [Sat, 11 Aug 2007 20:34:32 +0000]
BLOCK: Hide the contents of linux/bio.h if CONFIG_BLOCK=n

Hide the contents of linux/bio.h if CONFIG_BLOCK=n as there shouldn't be
compiled code that uses it.

Signed-off-by: David Howells <dhowells@redhat.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

13 years agosysace: HDIO_GETGEO has it's own method for ages
Christoph Hellwig [Sat, 11 Aug 2007 20:34:31 +0000]
sysace: HDIO_GETGEO has it's own method for ages

The way this driver tries to implement HDIO_GETGEO it'll never be called.
Then again on ppc it probably will never be called anyway because it's
utterly pointless.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

13 years agodrivers/block/cpqarray.c: better error handling and kmalloc + memset conversion to...
Mariusz Kozlowski [Sat, 11 Aug 2007 20:34:30 +0000]
drivers/block/cpqarray.c: better error handling and kmalloc + memset conversion to k[cz]alloc

This patch removes some redundant casts, does the kmalloc + memset to
k[cz]alloc conversion and it changes the error path to use goto (to avoid code
duplication).

 drivers/block/cpqarray.c | 49567 -> 48623 (-944 bytes)
 drivers/block/cpqarray.o | 178820 -> 178288 (-532 bytes)

Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

13 years agodrivers/block/cciss.c: kmalloc + memset conversion to kzalloc
Mariusz Kozlowski [Sat, 11 Aug 2007 20:34:29 +0000]
drivers/block/cciss.c: kmalloc + memset conversion to kzalloc

 drivers/block/cciss.c | 104285 -> 104168 (-117 bytes)
 drivers/block/cciss.o | 277400 -> 277124 (-276 bytes)

Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

13 years agoClean up duplicate includes in drivers/block/
Jesper Juhl [Sat, 11 Aug 2007 20:34:27 +0000]
Clean up duplicate includes in drivers/block/

This patch cleans up duplicate includes in
drivers/block/

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Satyam Sharma <satyam.sharma@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

13 years agoFix remap handling by blktrace
Alan D. Brunelle [Tue, 7 Aug 2007 13:30:23 +0000]
Fix remap handling by blktrace

This patch provides more information concerning REMAP operations on block
IOs. The additional information provides clearer details at the user level,
and supports post-processing analysis in btt.

o  Adds in partition remaps on the same device.
o  Fixed up the remap information in DM to be in the right order
o  Sent up mapped-from and mapped-to device information

Signed-off-by: Alan D. Brunelle <alan.brunelle@hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

13 years ago[PATCH] remove mm/filemap.c:file_send_actor()
Adrian Bunk [Mon, 30 Jul 2007 06:24:27 +0000]
[PATCH] remove mm/filemap.c:file_send_actor()

This patch removes the no longer used file_send_actor().

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

13 years agosched debug: dont print kernel address in /proc/sched_debug
Ingo Molnar [Fri, 10 Aug 2007 21:05:11 +0000]
sched debug: dont print kernel address in /proc/sched_debug

Arjan van de Ven pointed out that we should not print kernel addresses
in world-readable /proc files - fix that.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>

13 years agosched: fix typo in the FAIR_GROUP_SCHED branch
Ingo Molnar [Fri, 10 Aug 2007 21:05:11 +0000]
sched: fix typo in the FAIR_GROUP_SCHED branch

while there's no in-tree way to turn group scheduling at the moment,
fix a typo in it nevertheless.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

13 years agosched: improve rq-clock overflow logic
Ingo Molnar [Fri, 10 Aug 2007 21:05:11 +0000]
sched: improve rq-clock overflow logic

improve the rq-clock overflow logic: limit the absolute rq->clock
delta since the last scheduler tick, instead of limiting the delta
itself.

tested by Arjan van de Ven - whole laptop was misbehaving due to
an incorrectly calibrated cpu_khz confusing sched_clock().

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>

13 years ago[S390] monwriter: Serialization bug for multithreaded applications.
Melissa Howland [Fri, 10 Aug 2007 12:32:35 +0000]
[S390] monwriter: Serialization bug for multithreaded applications.

Locking added so that multithreaded applications can now do writes
from different threads without the risk of storage corruption.

Signed-off-by: Melissa Howland <melissah@us.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

13 years ago[S390] vmur: diag14 only works with buffers below 2GB
Michael Holzheu [Fri, 10 Aug 2007 12:32:34 +0000]
[S390] vmur: diag14 only works with buffers below 2GB

If memory buffers above 2GB are used, diagnose 14 raises a specification
exception. This fix ensures that buffer allocation is done below the 2GB
boundary.

Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

13 years ago[S390] vmur: add "top of queue" sanity check for reader open
Michael Holzheu [Fri, 10 Aug 2007 12:32:33 +0000]
[S390] vmur: add "top of queue" sanity check for reader open

If the z/VM reader is already open, it can happen that after opening the
Linux reader device, not the topmost file is processed. According the
semantics of the Linux z/VM unit record device driver, always the topmost
file has to be processed. With this fix an error is returned if that is
not the case.

Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>