]> err.no Git - linux-2.6/log
linux-2.6
18 years ago[PATCH] PCI: PCI/Cardbus cards hidden, needs pci=assign-busses to fix
Bernhard Kaindl [Sat, 18 Feb 2006 09:36:55 +0000 (01:36 -0800)]
[PATCH] PCI: PCI/Cardbus cards hidden, needs pci=assign-busses to fix

"In some cases, especially on modern laptops with a lot of PCI and cardbus
bridges, we're unable to assign correct secondary/subordinate bus numbers
to all cardbus bridges due to BIOS limitations unless we are using
"pci=assign-busses" boot option." -- Ivan Kokshaysky (from a patch comment)

Without it, Cardbus cards inserted are never seen by PCI because the parent
PCI-PCI Bridge of the Cardbus bridge will not pass and translate Type 1 PCI
configuration cycles correctly and the system will fail to find and
initialise the PCI devices in the system.

Reference: PCI-PCI Bridges: PCI Configuration Cycles and PCI Bus Numbering:
http://www.science.unitn.it/~fiorella/guidelinux/tlk/node72.html

The reason for this is that:
 ``All PCI busses located behind a PCI-PCI bridge must reside between the
secondary bus number and the subordinate bus number (inclusive).''

"pci=assign-busses" makes pcibios_assign_all_busses return 1 and this
turns on PCI renumbering during PCI probing.

Alan suggested to use DMI automatically set assign-busses on problem systems.

The only question for me was where to put it.  I put it directly before
scanning PCI bus into pcibios_scan_root() because it's called from legacy,
acpi and numa and so it can be one place for all systems and configurations
which may need it.

AMD64 Laptops are also affected and fixed by assign-busses, and the code is
also incuded from arch/x86_64/pci/ that place will also work for x86_64
kernels, I only ifdef'-ed the x86-only Laptop in this example.

Affected and known or assumed to be fixed with it are (found by googling):

* ASUS Z71V and L3s
* Samsung X20
* Compaq R3140us and all Compaq R3000 series laptops with TI1620 Controller,
  also Compaq R4000 series (from a kernel.org bugreport)
* HP zv5000z (AMD64 3700+, known that fixup_parent_subordinate_busnr fixes it)
* HP zv5200z
* IBM ThinkPad 240
* An IBM ThinkPad (1.8 GHz Pentium M) debugged by Pavel Machek
  gives the correspondig message which detects the possible problem.
* MSI S260 / Medion SIM 2100 MD 95600

The patch also expands the "try pci=assign-busses" warning so testers will
help us to update the DMI table.

Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] PCI: fix problems with MSI-X on ia64
Grant Grundler [Fri, 17 Feb 2006 07:58:29 +0000 (23:58 -0800)]
[PATCH] PCI: fix problems with MSI-X on ia64

Use "unsigned long" when dealing with PCI resources.
The BAR Indicator Register (BIR) can be a 64-bit value
or the resource could be a 64-bit host physical address.

Enables ib_mthca and cciss drivers to use MSI-X on ia64 HW.
Problem showed up now because of new system firmware on one platform.
Symptom will either be memory corruption or MCA.

Second part of this patch deals with "useless" code.
We walk through the steps to find the phys_addr and then
don't use the result. I suspect the intent was to zero
out the respective MSI-X entry but I'm not sure at the moment.
Delete the code inside the #if 0/#endif if it's really
not needed.

Signed-off-by: Grant Grundler <iod00d@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] PCI: resource address mismatch
Linus Torvalds [Wed, 22 Feb 2006 23:50:30 +0000 (15:50 -0800)]
[PATCH] PCI: resource address mismatch

On Tue, 21 Feb 2006, Ivan Kokshaysky wrote:
> There are two bogus entries in the BIOS memory map table which are
> conflicting with a prefetchable memory range of the AGP bridge:
>
>  BIOS-e820: 00000000fec00000 - 00000000fec01000 (reserved)
>  BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
>
> 0000:00:02.0 PCI bridge: Silicon Integrated Systems [SiS] Virtual PCI-to-PCI bridge (AGP) (prog-if 00 [Normal decode])
>  Flags: bus master, fast devsel, latency 0
>  Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
>  I/O behind bridge: 0000c000-0000cfff
>  Memory behind bridge: e7e00000-e7efffff
>  Prefetchable memory behind bridge: fec00000-ffcfffff
>     ^^^^^^^^^^^^^^^^^

Yes. However, it's pretty clear that the e820 entries are there for a
reason. Probably they are a hack by the BIOS maintainers to keep Windows
from stomping/moving that region, exactly because they want to keep the
bridge where it is (or, it's actually for the BIOS itself - the BIOS
tables are a horrid mess, and BIOS engineers are pretty hacky people:
they'll add random entries to make their own broken algorithms do the
"right thing").

> Starting from 2.6.13, kernel tries to resolve that sort of conflicts,
> so that prefetch window of the bridge and the framebuffer memory behind
> it get moved to 0x10000000.

I think we could (and probably should) solve this another way: consider
the ACPI "reserved regions" from the e820 map exactly the same way that we
do other ACPI hints - they should restrict _new_ allocations, but not
impact stuff we figure out on our own.

Basically, right now we assign _unassigned_ resources at "fs_initcall"
time. If we were to add in the e820 "reserved region" stuff before that
(but after we've done PCI discovery), we'd probably do the right thing.

Right now we do the e820 reserved regions very early indeed: we call
"register_memory()" from setup_arch(). We could move at least part of it
(the part that registers the resources) down a bit.

Here's a test-patch. I'm not saying we should absolutely do this, but it
might be interesting to try...

Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: <bjk@luxsci.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] PCI: remove msi save/restore code in specific driver
Shaohua Li [Wed, 8 Feb 2006 09:11:40 +0000 (17:11 +0800)]
[PATCH] PCI: remove msi save/restore code in specific driver

Remove pcie port driver's msi save/restore code.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] PCI: make MSI quirk inheritable from the pci bus
Michael S. Tsirkin [Tue, 14 Feb 2006 16:52:22 +0000 (18:52 +0200)]
[PATCH] PCI: make MSI quirk inheritable from the pci bus

It turns out AMD 8131 quirk only affects MSI for devices behind the 8131 bridge.
Handle this by adding a flags field in pci_bus, inherited from parent to child.

Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] PCI: quirk for asus a8v and a8v delux motherboards
Bauke Jan Douma [Tue, 28 Feb 2006 20:44:36 +0000 (21:44 +0100)]
[PATCH] PCI: quirk for asus a8v and a8v delux motherboards

On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller
and MC97 modem controller are deactivated when a second PCI soundcard
is present.  This patch enables them.

Signed-off-by: Bauke Jan Douma <bjdouma@xs4all.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] PCI: SMBus unhide on HP Compaq nx6110
tomek@koprowski.org [Sun, 19 Feb 2006 17:03:24 +0000 (18:03 +0100)]
[PATCH] PCI: SMBus unhide on HP Compaq nx6110

I attach a trivial patch for 2.6.15.4 that unhides SMBus controller
on an HP Compaq nx6110 notebook.

Signed-off-by: Tomasz Koprowski <tomek@koprowski.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] PCI: Add pci_device_shutdown to pci_bus_type
Brian Gerst [Sun, 19 Feb 2006 21:05:52 +0000 (16:05 -0500)]
[PATCH] PCI: Add pci_device_shutdown to pci_bus_type

The extra compatability code is not necessary.  Any code still using
the old shutdown method will trigger the warning in driver_register()
instead.

Signed-off-by: Brian Gerst <bgerst@didntduck.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] shpchp: adapt to pci driver model
Kenji Kaneshige [Tue, 21 Feb 2006 23:45:50 +0000 (15:45 -0800)]
[PATCH] shpchp: adapt to pci driver model

This patch adapts SHPCHP driver to the PCI device driver model.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] shpchp: Fix slot state handling
Kenji Kaneshige [Tue, 21 Feb 2006 23:45:48 +0000 (15:45 -0800)]
[PATCH] shpchp: Fix slot state handling

Current SHPCHP driver doesn't care about the confliction between
hotplug operation via sysfs and hotplug operation via attention
button. So if those ware conflicted, slot could be an unexpected
state.

This patch changes SHPCHP driver to handle slot state properly. With
this patch, slot events are handled according to the current slot
state as shown at the Table below.

Table. Slot States and Event Handling
=========================================================================
Slot State Event and Action
=========================================================================
STATIC - Go to POWERON state if user initiates
(Slot enabled,   insertion request via sysfs
 Slot disabled) - Go to POWEROFF state if user initiates removal
  request via sysfs
- Go to BLINKINGON state if user presses
  attention button when the slot is disabled
- Go to BLINKINGOFF state if user presses
  attention button when the slot is enabled

18 years ago[PATCH] shpchp: event handling rework
Kenji Kaneshige [Tue, 21 Feb 2006 23:45:45 +0000 (15:45 -0800)]
[PATCH] shpchp: event handling rework

The event handler of SHPCHP driver is unnecessarily very complex. In
addition, current event handler can only a fixed number of events at
the same time, and some of events would be lost if several number of
events happened at the same time.

This patch simplify the event handler by using 'work queue', and it
also fix the above-mentioned issue.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] shpchp: Remove unused wait_for_ctrl_irq
Kenji Kaneshige [Tue, 21 Feb 2006 23:45:42 +0000 (15:45 -0800)]
[PATCH] shpchp: Remove unused wait_for_ctrl_irq

The wait_for_ctrl_irq() function in SHPCHP driver is no longer needed.
This patch removes that. This patch has no functional change.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] shpchp: Remove unused pci_bus member from controller structure
Kenji Kaneshige [Tue, 21 Feb 2006 23:45:38 +0000 (15:45 -0800)]
[PATCH] shpchp: Remove unused pci_bus member from controller structure

This patch removes unused 'pci_bus' member from controller structure.
This patch have no functional change.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] PCI: Avoid leaving MASTER_ABORT disabled permanently when returning from...
Ralf Baechle [Tue, 14 Feb 2006 16:23:57 +0000 (16:23 +0000)]
[PATCH] PCI: Avoid leaving MASTER_ABORT disabled permanently when returning from pci_scan_bridge.

> On Mon, Feb 13, 2006 at 05:13:21PM -0800, David S. Miller wrote:
> >
> > In drivers/pci/probe.c:pci_scan_bridge(), if this is not the first
> > pass (pass != 0) we don't restore the PCI_BRIDGE_CONTROL_REGISTER and
> > thus leave PCI_BRIDGE_CTL_MASTER_ABORT off:
> >
> > int __devinit pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max, int pass)
> > {
> >  ...
> >  /* Disable MasterAbortMode during probing to avoid reporting
> >     of bus errors (in some architectures) */
> >  pci_read_config_word(dev, PCI_BRIDGE_CONTROL, &bctl);
> >  pci_write_config_word(dev, PCI_BRIDGE_CONTROL,
> >        bctl & ~PCI_BRIDGE_CTL_MASTER_ABORT);
> >  ...
> >  if ((buses & 0xffff00) && !pcibios_assign_all_busses() && !is_cardbus) {
> >  unsigned int cmax, busnr;
> >  /*
> >   * Bus already configured by firmware, process it in the first
> >   * pass and just note the configuration.
> >   */
> >  if (pass)
> >  return max;
> >  ...
> >  }
> >
> >  pci_write_config_word(dev, PCI_BRIDGE_CONTROL, bctl);
> >  ...
> >
> > This doesn't seem intentional.

Agreed, looks like an accident.  The patch [1] originally came from Kip
Walker (Broadcom back then) between 2.6.0-test3 and 2.6.0-test4.  As I
recall it was supposed to fix an issue with with PCI aborts being
signalled by the PCI bridge of the Broadcom BCM1250 family of SOCs when
probing behind pci_scan_bridge.  It is undeseriable to disable
PCI_BRIDGE_CTL_MASTER_ABORT in pci_{read,write)_config_* and the
behaviour wasn't considered a bug in need of a workaround, so this was
put in probe.c.

I don't have an affected system at hand, so can't really test but I
propose something like the below patch.

[1] http://www.linux-mips.org/git?p=linux.git;a=commit;h=599457e0cb702a31a3247ea6a5d9c6c99c4cf195

[PCI] Avoid leaving MASTER_ABORT disabled permanently when returning from pci_scan_bridge.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] PCI: Give PCI config access initialization a defined ordering
Andi Kleen [Thu, 23 Mar 2006 22:35:12 +0000 (14:35 -0800)]
[PATCH] PCI: Give PCI config access initialization a defined ordering

I moved it to a separate function which is safer.

This avoids problems with the linker reordering them and the
less useful PCI config space access methods taking priority
over the better ones.

Fixes some problems with broken MMCONFIG

Cc: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] shpchp - Fix incorrect return value of interrupt handler
Kenji Kaneshige [Thu, 26 Jan 2006 01:05:57 +0000 (10:05 +0900)]
[PATCH] shpchp - Fix incorrect return value of interrupt handler

Current SHPCHP driver has a bug in its interrupt handler which cause
"IRQ #: nobody cared" oops. This problem can be reproduced easily by
the following operation.

    # cd /sys/bus/pci/slots/<slot#>
    # while true; do echo 1 > attention ; done &

The reason is that when command complete interrupt is raised, current
SHPCHP driver's interrupt handler returns IRQ_NONE regardless of if
the interrupt is handled or not.

This patch fixes this issue.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] shpchp - move slot name into struct slot
Kenji Kaneshige [Thu, 26 Jan 2006 01:04:56 +0000 (10:04 +0900)]
[PATCH] shpchp - move slot name into struct slot

This patch moves slot name area into struct slot.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] shpchp - removed unncessary 'magic' member from slot
Kenji Kaneshige [Thu, 26 Jan 2006 01:03:40 +0000 (10:03 +0900)]
[PATCH] shpchp - removed unncessary 'magic' member from slot

This patch removes unnecessary 'magic' member from struct slot of
SHPCHP driver.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] shpchp - replace kmalloc() with kzalloc() and cleanup arg of sizeof()
Kenji Kaneshige [Thu, 26 Jan 2006 01:02:41 +0000 (10:02 +0900)]
[PATCH] shpchp - replace kmalloc() with kzalloc() and cleanup arg of sizeof()

This patch replaces kmalloc() and memset() pair with kzalloc() and
cleans up the arg of sizeof() in SHPCHP driver.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] pcihp_skeleton.c cleanup
Kenji Kaneshige [Thu, 26 Jan 2006 01:01:35 +0000 (10:01 +0900)]
[PATCH] pcihp_skeleton.c cleanup

This patch cleans up pcihp_skelton.c as follows.

  o Move slot name area into struct slot.
  o Replace kmalloc with kzalloc and clean up the arg of sizeof()
  o Fix the wrong use of get_*_status() functions.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] shpchp - bugfix: add missing serialization
Kenji Kaneshige [Thu, 26 Jan 2006 01:00:33 +0000 (10:00 +0900)]
[PATCH] shpchp - bugfix: add missing serialization

Current shpchp driver might cause system panic because of lack of
serialization. It can be reproduced very easily by the following
operation.

# cd /sys/bus/pci/slots/<slot#>
# while true; do echo 0 > power ; echo 1 > power ; done &
# while true; do echo 0 > power ; echo 1 > power ; done &

This patch fixes this issue by changing shpchp to get appropreate
semaphore for hot-plug operation.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] shpchp - cleanup check command status
Kenji Kaneshige [Thu, 26 Jan 2006 00:59:24 +0000 (09:59 +0900)]
[PATCH] shpchp - cleanup check command status

This patch cleanups codes that check the command status. For this, it
introduces a new semaphore "cmd_sem" for each controller.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] shpchp - cleanup controller list
Kenji Kaneshige [Thu, 26 Jan 2006 00:58:30 +0000 (09:58 +0900)]
[PATCH] shpchp - cleanup controller list

This patch changes SHPCHP driver to use list_head structure for
managing controller list.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] shpchp - cleanup slot list
Kenji Kaneshige [Thu, 26 Jan 2006 00:57:40 +0000 (09:57 +0900)]
[PATCH] shpchp - cleanup slot list

This patch changes SHPCHP driver to use list_head structure for
managing slot list.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] shpchp - cleanup shpchp_core.c
Kenji Kaneshige [Thu, 26 Jan 2006 00:56:53 +0000 (09:56 +0900)]
[PATCH] shpchp - cleanup shpchp_core.c

This patch cleanups some codes in shpchp_core.c. This patch has no
functional changes.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] shpchp - cleanup init_slots()
Kenji Kaneshige [Thu, 26 Jan 2006 00:55:35 +0000 (09:55 +0900)]
[PATCH] shpchp - cleanup init_slots()

This patch cleanups init_slots() function of SHPCHP driver based on
pcihp_skelton.c. This patch has no functional change.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] PCI hotplug: convert semaphores to mutex
Ingo Molnar [Fri, 13 Jan 2006 15:02:15 +0000 (16:02 +0100)]
[PATCH] PCI hotplug: convert semaphores to mutex

semaphore to mutex conversion.

the conversion was generated via scripts, and the result was validated
automatically via a script as well.

build tested with allyesconfig.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] PCI: quirk for IBM Dock II cardbus controllers
Kristen Accardi [Wed, 18 Jan 2006 00:57:04 +0000 (16:57 -0800)]
[PATCH] PCI: quirk for IBM Dock II cardbus controllers

The IBM Dock II cardbus bridges require some extra configuration
before Yenta is loaded in order to setup the Interrupts to be
routed properly.

Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] PCI: really fix parent's subordinate busnr
Kristen Accardi [Wed, 18 Jan 2006 00:57:01 +0000 (16:57 -0800)]
[PATCH] PCI: really fix parent's subordinate busnr

After you find the maximum value of the subordinate buses below the child
bus, you must fix the parent's subordinate bus number again, otherwise
it may be too small.

Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] PCI: return max reserved busnr
Kristen Accardi [Wed, 18 Jan 2006 00:56:56 +0000 (16:56 -0800)]
[PATCH] PCI: return max reserved busnr

Change the semantics of this call to return the max reserved
bus number instead of just the max assigned bus number.

Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] PCI: clean up msi.c a bit
Grant Grundler [Sat, 14 Jan 2006 07:34:53 +0000 (00:34 -0700)]
[PATCH] PCI: clean up msi.c a bit

Clean up: move assignments outside of if() statements.
AFAICT, no functional change. Easier to read/understand.

Depends on "[PATCH 1/3] msi vector targeting abstractions"
by Mark Maule <maule@sgi.com>.
I expect one hunk to fail if applied against 2.6.15.

This is essentially Joe Perches' patch.
I've cleaned up the one instance added by Mark's patch.

Signed-off-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
18 years ago[PATCH] reduce size of bio mempools
Benjamin LaHaise [Thu, 23 Mar 2006 11:01:08 +0000 (03:01 -0800)]
[PATCH] reduce size of bio mempools

The biovec default mempool limit of 256 entries results in over 3MB of RAM
being permanently pinned, even on systems with only 128MB of RAM.  Since
mempool tries to allocate from the system pool first, it makes sense to
reduce the size of the mempool fallbacks to a more reasonable limit of 1-5
entries -- enough for the system to be able to make progress even under
load.

Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>
Acked-by: Jens Axboe <axboe@suse.de>
Cc: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] __GENERIC_PER_CPU changes
Eric Dumazet [Thu, 23 Mar 2006 11:01:07 +0000 (03:01 -0800)]
[PATCH] __GENERIC_PER_CPU changes

Now CONFIG_DEBUG_INITDATA is in, initial percpu data
[__per_cpu_start,__per_cpu_end] can be declared as a redzone, and invalid
accesses after boot can be detected, at least for i386.

We can let non possible cpus percpu data point to this 'redzone' instead of
NULL .

NULL was not a good choice because part of [0..32768] memory may be
readable and invalid accesses may happen unnoticed.

If CONFIG_DEBUG_INITDATA is not defined, each non possible cpu points to
the initial percpu data (__per_cpu_offset[cpu] == 0), thus invalid accesses
wont be detected/crash.

This patch also moves __per_cpu_offset[] to read_mostly area to avoid false
sharing.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] more for_each_cpu() conversions
Andrew Morton [Thu, 23 Mar 2006 11:01:05 +0000 (03:01 -0800)]
[PATCH] more for_each_cpu() conversions

When we stop allocating percpu memory for not-possible CPUs we must not touch
the percpu data for not-possible CPUs at all.  The correct way of doing this
is to test cpu_possible() or to use for_each_cpu().

This patch is a kernel-wide sweep of all instances of NR_CPUS.  I found very
few instances of this bug, if any.  But the patch converts lots of open-coded
test to use the preferred helper macros.

Cc: Mikael Starvik <starvik@axis.com>
Cc: David Howells <dhowells@redhat.com>
Acked-by: Kyle McMartin <kyle@parisc-linux.org>
Cc: Anton Blanchard <anton@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: William Lee Irwin III <wli@holomorphy.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Christian Zankel <chris@zankel.net>
Cc: Philippe Elie <phil.el@wanadoo.fr>
Cc: Nathan Scott <nathans@sgi.com>
Cc: Jens Axboe <axboe@suse.de>
Cc: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] Only allocate percpu data for possible CPUs
Eric Dumazet [Thu, 23 Mar 2006 11:01:04 +0000 (03:01 -0800)]
[PATCH] Only allocate percpu data for possible CPUs

percpu_data blindly allocates bootmem memory to store NR_CPUS instances of
cpudata, instead of allocating memory only for possible cpus.

This patch saves ram, allocating num_possible_cpus() (instead of NR_CPUS)
instances.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Acked-by: "David S. Miller" <davem@davemloft.net>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Jens Axboe <axboe@suse.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Jens Axboe <axboe@suse.de>
Cc: Anton Blanchard <anton@samba.org>
Acked-by: William Irwin <wli@holomorphy.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] get_empty_filp tweaks, inline epoll_init_file()
Benjamin LaHaise [Thu, 23 Mar 2006 11:01:03 +0000 (03:01 -0800)]
[PATCH] get_empty_filp tweaks, inline epoll_init_file()

Eliminate a handful of cache references by keeping current in a register
instead of reloading (helps x86) and avoiding the overhead of a function
call.  Inlining eventpoll_init_file() saves 24 bytes.  Also reorder file
initialization to make writes occur more sequentially.

Signed-off-by: Benjamin LaHaise <bcrl@linux.intel.com>
Cc: Davide Libenzi <davidel@xmailserver.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] atomic: add_unless cmpxchg optimise
Nick Piggin [Thu, 23 Mar 2006 11:01:02 +0000 (03:01 -0800)]
[PATCH] atomic: add_unless cmpxchg optimise

Without branch hints, the very unlikely chance of the loop repeating due to
cmpxchg failure is unrolled with gcc-4 that I have tested.

Improve this for architectures with a native cas/cmpxchg.  llsc archs
should try to implement this natively.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Andi Kleen <ak@muc.de>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] fs/*/file.c: drop insane header dependencies
Alexey Dobriyan [Thu, 23 Mar 2006 11:01:01 +0000 (03:01 -0800)]
[PATCH] fs/*/file.c: drop insane header dependencies

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] kernel/rcupdate.c: make two structs static
Adrian Bunk [Thu, 23 Mar 2006 11:01:00 +0000 (03:01 -0800)]
[PATCH] kernel/rcupdate.c: make two structs static

This patch makes two needlessly global structs static.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] devpts: use lib/parser.c for parsing mount options
Domen Puncer [Thu, 23 Mar 2006 11:00:59 +0000 (03:00 -0800)]
[PATCH] devpts: use lib/parser.c for parsing mount options

Item from "2.6 should fix" list.

Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] BUILD_LOCK_OPS: cleanup preempt_disable() usage
Oleg Nesterov [Thu, 23 Mar 2006 11:00:58 +0000 (03:00 -0800)]
[PATCH] BUILD_LOCK_OPS: cleanup preempt_disable() usage

This patch changes the code from:

preempt_disable();
for (;;) {
...
preempt_disable();
}
to:
for (;;) {
preempt_disable();
...
}

which seems more clean to me and saves a couple of bytes for
each function.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] PnPBIOS: Missing SMALL_TAG_ENDDEP tag
Rene Herman [Thu, 23 Mar 2006 11:00:57 +0000 (03:00 -0800)]
[PATCH] PnPBIOS: Missing SMALL_TAG_ENDDEP tag

Without the attached, the kernel complains about my BIOS' PNP tables. It
was ACKed before, but never merged:

http://marc.theaimsgroup.com/?l=linux-kernel&m=110237794007900&w=2

Cc: Adam Belay <ambx1@neo.rr.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] pause_on_oops command line option
Andrew Morton [Thu, 23 Mar 2006 11:00:57 +0000 (03:00 -0800)]
[PATCH] pause_on_oops command line option

Attempt to fix the problem wherein people's oops reports scroll off the screen
due to repeated oopsing or to oopses on other CPUs.

If this happens the user can reboot with the `pause_on_oops=<seconds>' option.
It will allow the first oopsing CPU to print an oops record just a single
time.  Second oopsing attempts, or oopses on other CPUs will cause those CPUs
to enter a tight loop until the specified number of seconds have elapsed.

The patch implements the infrastructure generically in the expectation that
architectures other than x86 will find it useful.

Cc: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] kill _INLINE_
Adrian Bunk [Thu, 23 Mar 2006 11:00:56 +0000 (03:00 -0800)]
[PATCH] kill _INLINE_

This patch removes all occurances of _INLINE_ in the kernel.

With the exception of tty_flip.h, I've simply removed the inline's since
gcc should know best which functions to be inlined.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] notifier: profile.h forward decl fix
Andrew Morton [Thu, 23 Mar 2006 11:00:55 +0000 (03:00 -0800)]
[PATCH] notifier: profile.h forward decl fix

Declarations use struct notifier_block on both legs of the ifdef, so move the
notifier_block forward declaration outside the ifdef.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] make bug messages more consistent
Ingo Molnar [Thu, 23 Mar 2006 11:00:54 +0000 (03:00 -0800)]
[PATCH] make bug messages more consistent

Consolidate all kernel bug printouts to begin with the "BUG: " string.
Makes it easier to find them in large bootup logs.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] ufs: switch to inode_inc_count, inode_dec_count
Alexey Dobriyan [Thu, 23 Mar 2006 11:00:53 +0000 (03:00 -0800)]
[PATCH] ufs: switch to inode_inc_count, inode_dec_count

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] ext2: switch to inode_inc_count, inode_dec_count
Alexey Dobriyan [Thu, 23 Mar 2006 11:00:53 +0000 (03:00 -0800)]
[PATCH] ext2: switch to inode_inc_count, inode_dec_count

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sysv: switch to inode_inc_count, inode_dec_count
Alexey Dobriyan [Thu, 23 Mar 2006 11:00:52 +0000 (03:00 -0800)]
[PATCH] sysv: switch to inode_inc_count, inode_dec_count

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] minix: switch to inode_inc_link_count, inode_dec_link_count
Alexey Dobriyan [Thu, 23 Mar 2006 11:00:51 +0000 (03:00 -0800)]
[PATCH] minix: switch to inode_inc_link_count, inode_dec_link_count

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] Extract inode_inc_link_count(), inode_dec_link_count()
Alexey Dobriyan [Thu, 23 Mar 2006 11:00:51 +0000 (03:00 -0800)]
[PATCH] Extract inode_inc_link_count(), inode_dec_link_count()

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] fs/ufs/file.c: drop insane header dependencies
Alexey Dobriyan [Thu, 23 Mar 2006 11:00:50 +0000 (03:00 -0800)]
[PATCH] fs/ufs/file.c: drop insane header dependencies

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sigprocmask: kill unneeded temp var
Oleg Nesterov [Thu, 23 Mar 2006 11:00:49 +0000 (03:00 -0800)]
[PATCH] sigprocmask: kill unneeded temp var

Cleanup, remove unneeded double copying of current->blocked.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] snsc kmalloc2kzalloc
Jes Sorensen [Thu, 23 Mar 2006 11:00:49 +0000 (03:00 -0800)]
[PATCH] snsc kmalloc2kzalloc

Change driver to use kzalloc rather than kmalloc+memset

Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] fat_lock is used as a mutex, convert it to using the new mutex primitive
Arjan van de Ven [Thu, 23 Mar 2006 11:00:48 +0000 (03:00 -0800)]
[PATCH] fat_lock is used as a mutex, convert it to using the new mutex primitive

The fat code uses the fat_lock always in a mutex way (taking and releasing
the lock in the same function), the patch below converts it into the new
mutex primitive.  Please consider this patch for the code.

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] oss: semaphore to mutex conversion
Ingo Molnar [Thu, 23 Mar 2006 11:00:47 +0000 (03:00 -0800)]
[PATCH] oss: semaphore to mutex conversion

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Extracted for OSS/Free changes from Ingo's original patches.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] kernel/module.c Semaphore to Mutex Conversion for module_mutex
Ashutosh Naik [Thu, 23 Mar 2006 11:00:46 +0000 (03:00 -0800)]
[PATCH] kernel/module.c Semaphore to Mutex Conversion for module_mutex

This patch converts the module_mutex semaphore to a mutex.

Signed-off-by: Ashutosh Naik <ashutosh.naik@gmail.com>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: drivers/ide
Arjan van de Ven [Thu, 23 Mar 2006 11:00:45 +0000 (03:00 -0800)]
[PATCH] sem2mutex: drivers/ide

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: serial ->port_write_mutex
Ingo Molnar [Thu, 23 Mar 2006 11:00:44 +0000 (03:00 -0800)]
[PATCH] sem2mutex: serial ->port_write_mutex

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: UDF
Ingo Molnar [Thu, 23 Mar 2006 11:00:44 +0000 (03:00 -0800)]
[PATCH] sem2mutex: UDF

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: NCPFS
Ingo Molnar [Thu, 23 Mar 2006 11:00:43 +0000 (03:00 -0800)]
[PATCH] sem2mutex: NCPFS

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] convert ext3's truncate_sem to a mutex
Arjan van de Ven [Thu, 23 Mar 2006 11:00:42 +0000 (03:00 -0800)]
[PATCH] convert ext3's truncate_sem to a mutex

ext3's truncate_sem is always released in the same function it's taken
and it otherwise is a mutex as well..

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: HPFS
Ingo Molnar [Thu, 23 Mar 2006 11:00:42 +0000 (03:00 -0800)]
[PATCH] sem2mutex: HPFS

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: autofs4 wq_sem
Ingo Molnar [Thu, 23 Mar 2006 11:00:41 +0000 (03:00 -0800)]
[PATCH] sem2mutex: autofs4 wq_sem

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: JFFS
Ingo Molnar [Thu, 23 Mar 2006 11:00:40 +0000 (03:00 -0800)]
[PATCH] sem2mutex: JFFS

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: sound/oss/
Ingo Molnar [Thu, 23 Mar 2006 11:00:39 +0000 (03:00 -0800)]
[PATCH] sem2mutex: sound/oss/

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: drivers/block/nbd.c
Ingo Molnar [Thu, 23 Mar 2006 11:00:38 +0000 (03:00 -0800)]
[PATCH] sem2mutex: drivers/block/nbd.c

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Paul Clements <Paul.Clements@steeleye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: drivers/block/loop.c
Ingo Molnar [Thu, 23 Mar 2006 11:00:38 +0000 (03:00 -0800)]
[PATCH] sem2mutex: drivers/block/loop.c

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: fs/seq_file.c
Ingo Molnar [Thu, 23 Mar 2006 11:00:37 +0000 (03:00 -0800)]
[PATCH] sem2mutex: fs/seq_file.c

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: fs/libfs.c
Ingo Molnar [Thu, 23 Mar 2006 11:00:36 +0000 (03:00 -0800)]
[PATCH] sem2mutex: fs/libfs.c

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: kprobes
Ingo Molnar [Thu, 23 Mar 2006 11:00:35 +0000 (03:00 -0800)]
[PATCH] sem2mutex: kprobes

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: jbd, j_checkpoint_mutex
Arjan van de Ven [Thu, 23 Mar 2006 11:00:35 +0000 (03:00 -0800)]
[PATCH] sem2mutex: jbd, j_checkpoint_mutex

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: iprune
Ingo Molnar [Thu, 23 Mar 2006 11:00:34 +0000 (03:00 -0800)]
[PATCH] sem2mutex: iprune

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: vfs_rename_mutex
Arjan van de Ven [Thu, 23 Mar 2006 11:00:33 +0000 (03:00 -0800)]
[PATCH] sem2mutex: vfs_rename_mutex

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Al Viro <viro@ftp.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: eventpoll
Arjan van de Ven [Thu, 23 Mar 2006 11:00:32 +0000 (03:00 -0800)]
[PATCH] sem2mutex: eventpoll

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Davide Libenzi <davidel@xmailserver.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: tty
Ingo Molnar [Thu, 23 Mar 2006 11:00:31 +0000 (03:00 -0800)]
[PATCH] sem2mutex: tty

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: inotify
Ingo Molnar [Thu, 23 Mar 2006 11:00:30 +0000 (03:00 -0800)]
[PATCH] sem2mutex: inotify

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: John McCutchan <ttb@tentacle.dhs.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Acked-by: Robert Love <rml@novell.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: quota
Ingo Molnar [Thu, 23 Mar 2006 11:00:29 +0000 (03:00 -0800)]
[PATCH] sem2mutex: quota

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Jan Kara <jack@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: blockdev #2
Arjan van de Ven [Thu, 23 Mar 2006 11:00:28 +0000 (03:00 -0800)]
[PATCH] sem2mutex: blockdev #2

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: drivers/char/
Ingo Molnar [Thu, 23 Mar 2006 11:00:27 +0000 (03:00 -0800)]
[PATCH] sem2mutex: drivers/char/

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: drivers/block/floppy.c
Jes Sorensen [Thu, 23 Mar 2006 11:00:26 +0000 (03:00 -0800)]
[PATCH] sem2mutex: drivers/block/floppy.c

Convert from semaphore to mutex.
Untested as I have no access to a floppy drive at the moment.

Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: drivers/block/pktcdvd.c
Jes Sorensen [Thu, 23 Mar 2006 11:00:25 +0000 (03:00 -0800)]
[PATCH] sem2mutex: drivers/block/pktcdvd.c

Convert to use mutex from a semaphore

Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Peter Osterlund <petero2@telia.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: kernel/
Arjan van de Ven [Thu, 23 Mar 2006 11:00:24 +0000 (03:00 -0800)]
[PATCH] sem2mutex: kernel/

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: drivers/scsi/ide-scsi.c
Jes Sorensen [Thu, 23 Mar 2006 11:00:22 +0000 (03:00 -0800)]
[PATCH] sem2mutex: drivers/scsi/ide-scsi.c

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Jens Axboe <axboe@suse.de>
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: drivers: raw, connector, dcdbas, ppp_generic
Arjan van de Ven [Thu, 23 Mar 2006 11:00:21 +0000 (03:00 -0800)]
[PATCH] sem2mutex: drivers: raw, connector, dcdbas, ppp_generic

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] sem2mutex: kcapi.c
Arjan van de Ven [Thu, 23 Mar 2006 11:00:21 +0000 (03:00 -0800)]
[PATCH] sem2mutex: kcapi.c

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] convert fs/9p/ to mutexes, fix locking bugs
Ingo Molnar [Thu, 23 Mar 2006 11:00:19 +0000 (03:00 -0800)]
[PATCH] convert fs/9p/ to mutexes, fix locking bugs

Convert fs/9p/mux.c from semaphore to mutex.

NOTE: fixed locking bugs in the process - the code was using semaphores
the other way around.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Eric Van Hensbergen <ericvh@ericvh.myip.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] convert kernel/rcupdate.c:rcu_barrier_sema to mutex
Ingo Molnar [Thu, 23 Mar 2006 11:00:19 +0000 (03:00 -0800)]
[PATCH] convert kernel/rcupdate.c:rcu_barrier_sema to mutex

Convert kernel/rcupdate's rcu_barrier_sema to mutex.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: "Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] kernel/cpuset.c, mutex conversion
Ingo Molnar [Thu, 23 Mar 2006 11:00:18 +0000 (03:00 -0800)]
[PATCH] kernel/cpuset.c, mutex conversion

convert cpuset.c's callback_sem and manage_sem to mutexes.
Build and boot tested by Ingo.
Build, boot, unit and stress tested by pj.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] Fix oops in invalidate_dquots()
Jan Kara [Thu, 23 Mar 2006 11:00:17 +0000 (03:00 -0800)]
[PATCH] Fix oops in invalidate_dquots()

When quota is being turned off we assumed that all the references to dquots
were already dropped.  That need not be true as inodes being deleted are
not on superblock's inodes list and hence we need not reach it when
removing quota references from inodes.  So invalidate_dquots() has to wait
for all the users of dquots (as quota is already marked as turned off, no
new references can be acquired and so this is bound to happen rather
early).  When we do this, we can also remove the iprune_sem locking as it
was protecting us against exactly the same problem when freeing inodes
icache memory.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] Move read_mostly definition to asm/cache.h
Kyle McMartin [Thu, 23 Mar 2006 11:00:16 +0000 (03:00 -0800)]
[PATCH] Move read_mostly definition to asm/cache.h

Seems like needless clutter having a bunch of #if defined(CONFIG_$ARCH) in
include/linux/cache.h.  Move the per architecture section definition to
asm/cache.h, and keep the if-not-defined dummy case in linux/cache.h to
catch architectures which don't implement the section.

Verified that symbols still go in .data.read_mostly on parisc,
and the compile doesn't break.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] kill cdrom ->dev_ioctl method
Christoph Hellwig [Thu, 23 Mar 2006 11:00:15 +0000 (03:00 -0800)]
[PATCH] kill cdrom ->dev_ioctl method

Since early 2.4.x all cdrom drivers implement the block_device methods
themselves, so they can handle additional ioctls directly instead of going
through the cdrom layer.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] cleanup cdrom_ioctl
Christoph Hellwig [Thu, 23 Mar 2006 11:00:14 +0000 (03:00 -0800)]
[PATCH] cleanup cdrom_ioctl

Add a small helper for each ioctl to cut down cdrom_ioctl to a readable
size.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Acked-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Benoit Boissinot <benoit.boissinot@ens-lyon.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] Avoid taking global tasklist_lock for single threadedprocess at getrusage()
Ravikiran G Thirumalai [Thu, 23 Mar 2006 11:00:13 +0000 (03:00 -0800)]
[PATCH] Avoid taking global tasklist_lock for single threadedprocess at getrusage()

Avoid taking the global tasklist_lock when possible, if a process is single
threaded during getrusage().  Any avoidance of tasklist_lock is good for
NUMA boxes (and possibly for large SMPs).  Thanks to Oleg Nesterov for
review and suggestions.

Signed-off-by: Nippun Goel <nippung@calsoftinc.com>
Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: Shai Fultheim <shai@scalex86.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] Shrinks sizeof(files_struct) and better layout
Eric Dumazet [Thu, 23 Mar 2006 11:00:12 +0000 (03:00 -0800)]
[PATCH] Shrinks sizeof(files_struct) and better layout

1) Reduce the size of (struct fdtable) to exactly 64 bytes on 32bits
   platforms, lowering kmalloc() allocated space by 50%.

2) Reduce the size of (files_struct), using a special 32 bits (or
   64bits) embedded_fd_set, instead of a 1024 bits fd_set for the
   close_on_exec_init and open_fds_init fields.  This save some ram (248
   bytes per task) as most tasks dont open more than 32 files.  D-Cache
   footprint for such tasks is also reduced to the minimum.

3) Reduce size of allocated fdset.  Currently two full pages are
   allocated, that is 32768 bits on x86 for example, and way too much.  The
   minimum is now L1_CACHE_BYTES.

UP and SMP should benefit from this patch, because most tasks will touch
only one cache line when open()/close() stdin/stdout/stderr (0/1/2),
(next_fd, close_on_exec_init, open_fds_init, fd_array[0 ..  2] being in the
same cache line)

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] ext3_readdir: use generic readahead
Andrew Morton [Thu, 23 Mar 2006 11:00:11 +0000 (03:00 -0800)]
[PATCH] ext3_readdir: use generic readahead

Linus points out that ext3_readdir's readahead only cuts in when
ext3_readdir() is operating at the very start of the directory.  So for large
directories we end up performing no readahead at all and we suck.

So take it all out and use the core VM's page_cache_readahead().  This means
that ext3 directory reads will use all of readahead's dynamic sizing goop.

Note that we're using the directory's filp->f_ra to hold the readahead state,
but readahead is actually being performed against the underlying blockdev's
address_space.  Fortunately the readahead code is all set up to handle this.

Tested with printk.  It works.  I was struggling to find a real workload which
actually cared.

(The patch also exports page_cache_readahead() to GPL modules)

Cc: "Stephen C. Tweedie" <sct@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] m68k: rtc driver cleanup
Jean Delvare [Thu, 23 Mar 2006 11:00:09 +0000 (03:00 -0800)]
[PATCH] m68k: rtc driver cleanup

Use the standard BCD macros instead of redefining them.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] swsusp: add s2ram ioctl to userland interface
Luca Tettamanti [Thu, 23 Mar 2006 11:00:09 +0000 (03:00 -0800)]
[PATCH] swsusp: add s2ram ioctl to userland interface

Add the SNAPSHOT_S2RAM ioctl to the snapshot device.

This ioctl allows a userland application to make the system (previously frozen
with the SNAPSHOT_FREE ioctl) enter the S3 state without freezing processes
and disabling nonboot CPUs for the second time.

This will allow us to implement the suspend-to-disk-and-RAM (STDR)
functionality in the userland suspend tools.

Signed-off-by: Luca Tettamanti <kronos.it@gmail.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] swsusp: let userland tools switch console on suspend
Rafael J. Wysocki [Thu, 23 Mar 2006 11:00:08 +0000 (03:00 -0800)]
[PATCH] swsusp: let userland tools switch console on suspend

Remove the console-switching code from the suspend part of the swsusp userland
interface and let the userland tools switch the console.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] swsusp: add check for suspension of X-controlled devices
Rafael J. Wysocki [Thu, 23 Mar 2006 11:00:07 +0000 (03:00 -0800)]
[PATCH] swsusp: add check for suspension of X-controlled devices

It is unsafe to suspend devices if the hardware is controlled by X.  Add an
extra check to prevent this from happening.

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