30 Oct, 2006
1 commit
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* master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] 3914/1: [Jornada7xx] - Typo Fix in cpu-sa1110.c (b != B)
[ARM] 3913/1: n2100: fix IRQ routing for second ethernet port
[ARM] Add KBUILD_IMAGE target support
[ARM] Fix suspend oops caused by PXA2xx PCMCIA driver
[ARM] Fix i2c-pxa slave mode support
[ARM] 3900/1: Fix VFP Division by Zero exception handling.
[ARM] 3899/1: Fix the normalization of the denormal double precision number.
[ARM] 3909/1: Disable UWIND_INFO for ARM (again)
[ARM] Add __must_check to uaccess functions
[ARM] Add realview SMP default configuration
[ARM] Fix SMP irqflags support
29 Oct, 2006
1 commit
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strstrip() does not remove the last blank from strings which only consist
of blanks.Example:
char string[] = " ";
strstrip(string);results in " ", but should produce an empty string!
The following patch solves this problem:
Acked-by: Martin Schwidefsky
Signed-off-by: Michael Holzheu
Acked-by: Pekka Enberg
Acked-by Joern Engel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
28 Oct, 2006
1 commit
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According to Daniel Jacobowitz, UNWIND_INFO is not useful on ARM, and
in fact doesn't even compile.This patch disables the option for ARM.
Signed-off-by: Kevin Hilman
Signed-off-by: Russell King
21 Oct, 2006
1 commit
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Qooting Adrian:
- net/sunrpc/svc.c uses highest_possible_node_id()
- include/linux/nodemask.h says highest_possible_node_id() is
out-of-line #if MAX_NUMNODES > 1- the out-of-line highest_possible_node_id() is in lib/cpumask.c
- lib/Makefile: lib-$(CONFIG_SMP) += cpumask.o
CONFIG_ARCH_DISCONTIGMEM_ENABLE=y, CONFIG_SMP=n, CONFIG_SUNRPC=y-> highest_possible_node_id() is used in net/sunrpc/svc.c
CONFIG_NODES_SHIFT defined and > 0-> include/linux/numa.h: MAX_NUMNODES > 1
-> compile error
The bug is not present on architectures where ARCH_DISCONTIGMEM_ENABLE
depends on NUMA (but m32r isn't the only affected architecture).So move the function into page_alloc.c
Cc: Adrian Bunk
Cc: Paul Jackson
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
17 Oct, 2006
3 commits
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* git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: fm801-gp - handle errors from pci_enable_device()
Input: gameport core - handle errors returned by device_bind_driver()
Input: serio core - handle errors returned by device_bind_driver()
Lockdep: fix compile error in drivers/input/serio/serio.c
Input: serio - add lockdep annotations
Lockdep: add lockdep_set_class_and_subclass() and lockdep_set_subclass()
Input: atkbd - supress "too many keys" error message
Input: i8042 - supress ACK/NAKs when blinking during panic
Input: add missing exports to fix modular build -
This library function should be in obj-y and not in lib-y. But when we do
that it clashes unpleasantly with the assembly-language implementation in the
ia64 architecture.Instead of trying to fix it all up, just remove the generic carta_random32 in
the expectation that the recently-made-generic random32() will suffice.If/when perfmon is migrated to random32, ia64's private carta_random32
implementation can also be removed.Cc: Stephane Eranian
Cc: "Luck, Tony"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Make net_random() more widely available by calling it random32
akpm: hopefully this will permit the removal of carta_random32. That needs
confirmation from Stephane - this code looks somewhat more computationally
expensive, and has a different (ie: callee-stateful) interface.[akpm@osdl.org: lots of build fixes, cleanups]
Signed-off-by: Stephen Hemminger
Signed-off-by: David S. Miller
Cc: Stephane Eranian
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
13 Oct, 2006
1 commit
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The lack of asm-um/Kbuild is deliberate.
Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds
12 Oct, 2006
4 commits
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lib/bitmap.c:bitmap_parse() is a library function that received as input a
user buffer. This seemed to have originated from the way the write_proc
function of the /proc filesystem operates.This has been reworked to not use kmalloc and eliminates a lot of
get_user() overhead by performing one access_ok before using __get_user().We need to test if we are in kernel or user space (is_user) and access the
buffer differently. We cannot use __get_user() to access kernel addresses
in all cases, for example in architectures with separate address space for
kernel and user.This function will be useful for other uses as well; for example, taking
input for /sysfs instead of /proc, so it was changed to accept kernel
buffers. We have this use for the Linux UWB project, as part as the
upcoming bandwidth allocator code.Only a few routines used this function and they were changed too.
Signed-off-by: Reinette Chatre
Signed-off-by: Inaky Perez-Gonzalez
Cc: Paul Jackson
Cc: Joe Korty
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This is a follow-up patch based on the review for perfmon2. This patch
adds the carta_random32() library routine + carta_random32.h header file.This is fast, simple, and efficient pseudo number generator algorithm. We
use it in perfmon2 to randomize the sampling periods. In this context, we
do not need any fancy randomizer.Signed-off-by: stephane eranian
Cc: David Mosberger
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
In order to encourage people to notice when they break the exported
headers, add a config option which automatically runs the sanity checks
when building vmlinux. That way, those who use allyesconfig will notice
failures.Signed-off-by: David Woodhouse
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We got several false bug reports because of enabled
CONFIG_DETECT_SOFTLOCKUP. Disable soft lockup detection on s390, since it
doesn't work on a virtualized architecture.Cc: Martin Schwidefsky
Signed-off-by: Heiko Carstens
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
11 Oct, 2006
3 commits
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This annotation makes it possible to assign a subclass on lock init. This
annotation is meant to reduce the _nested() annotations by assigning a
default subclass.One could do without this annotation and rely on lockdep_set_class()
exclusively, but that would require a manual stack of struct lock_class_key
objects.Signed-off-by: Peter Zijlstra
Signed-off-by: Dmitry Torokhov -
Signed-off-by: Dmitry Torokhov
-
struct radix_tree_root has unused upper bits of ->gfp_mask reused for
tags bitmap. Annotated.Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds
06 Oct, 2006
1 commit
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Modules might want this.
Cc: David Howells
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
05 Oct, 2006
1 commit
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Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around. On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).Where appropriate, an arch may override the generic storage facility and do
something different with the variable. On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions. Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller. A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.I've build this code with allyesconfig for x86_64 and i386. I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.This will affect all archs. Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:struct pt_regs *old_regs = set_irq_regs(regs);
And put the old one back at the end:
set_irq_regs(old_regs);
Don't pass regs through to generic_handle_irq() or __do_IRQ().
In timer_interrupt(), this sort of change will be necessary:
- update_process_times(user_mode(regs));
- profile_tick(CPU_PROFILING, regs);
+ update_process_times(user_mode(get_irq_regs()));
+ profile_tick(CPU_PROFILING);I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().Some notes on the interrupt handling in the drivers:
(*) input_dev() is now gone entirely. The regs pointer is no longer stored in
the input_dev struct.(*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does
something different depending on whether it's been supplied with a regs
pointer or not.(*) Various IRQ handler function pointers have been moved to type
irq_handler_t.Signed-Off-By: David Howells
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
04 Oct, 2006
1 commit
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Many files include the filename at the beginning, serveral used a wrong one.
Signed-off-by: Uwe Zeisberger
Signed-off-by: Adrian Bunk
03 Oct, 2006
1 commit
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It is a non-standard heap-sort algorithm implementation because the index
of child node is wrong . The sort function still outputs right result, but
the performance is O( n * ( log(n) + 1 ) ) , about 10% ~ 20% worse than
standard algorithm.Signed-off-by: keios
Acked-by: Matt Mackall
Acked-by: Zou Nan hai
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
02 Oct, 2006
6 commits
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The last in-kernel user of errno is gone, so we should remove the definition
and everything referring to it. This also removes the now-unused lib/execve.c
file that was introduced earlier.Also remove every trace of __KERNEL_SYSCALLS__ that still remained in the
kernel.Signed-off-by: Arnd Bergmann
Cc: Andi Kleen
Cc: Paul Mackerras
Cc: Benjamin Herrenschmidt
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Cc: Russell King
Cc: Ian Molton
Cc: Mikael Starvik
Cc: David Howells
Cc: Yoshinori Sato
Cc: Hirokazu Takata
Cc: Ralf Baechle
Cc: Kyle McMartin
Cc: Heiko Carstens
Cc: Martin Schwidefsky
Cc: Paul Mundt
Cc: Kazumoto Kojima
Cc: Richard Curnow
Cc: William Lee Irwin III
Cc: "David S. Miller"
Cc: Jeff Dike
Cc: Paolo 'Blaisorblade' Giarrusso
Cc: Miles Bader
Cc: Chris Zankel
Cc: "Luck, Tony"
Cc: Geert Uytterhoeven
Cc: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The use of execve() in the kernel is dubious, since it relies on the
__KERNEL_SYSCALLS__ mechanism that stores the result in a global errno
variable. As a first step of getting rid of this, change all users to a
global kernel_execve function that returns a proper error code.This function is a terrible hack, and a later patch removes it again after the
kernel syscalls are gone.Signed-off-by: Arnd Bergmann
Cc: Andi Kleen
Cc: Paul Mackerras
Cc: Benjamin Herrenschmidt
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Cc: Russell King
Cc: Ian Molton
Cc: Mikael Starvik
Cc: David Howells
Cc: Yoshinori Sato
Cc: Hirokazu Takata
Cc: Ralf Baechle
Cc: Kyle McMartin
Cc: Heiko Carstens
Cc: Martin Schwidefsky
Cc: Paul Mundt
Cc: Kazumoto Kojima
Cc: Richard Curnow
Cc: William Lee Irwin III
Cc: "David S. Miller"
Cc: Jeff Dike
Cc: Paolo 'Blaisorblade' Giarrusso
Cc: Miles Bader
Cc: Chris Zankel
Cc: "Luck, Tony"
Cc: Geert Uytterhoeven
Cc: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
cpumask: add highest_possible_node_id(), analogous to
highest_possible_processor_id().[pj@sgi.com: fix typo]
Signed-off-by: Greg Banks
Signed-off-by: Paul Jackson
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
A simple module to test Linux Kernel Dump mechanism. This module uses
jprobes to install/activate pre-defined crash points. At different crash
points, various types of crashing scenarios are created like a BUG(),
panic(), exception, recursive loop and stack overflow. The user can
activate a crash point with specific type by providing parameters at the
time of module insertion. Please see the file header for usage
information. The module is based on the Linux Kernel Dump Test Tool by
Fernando .This module could be merged with mainline. Jprobes is used here so that the
context in which crash point is hit, could be maintained. This implements
all the crash points as done by LKDTT except the one in the middle of
tasklet_action().Signed-off-by: Ankita Garg
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The exported kernel interfaces of genpool allocator need to adhere to
the requirements of kernel-doc.Signed-off-by: Dean Nelson
Cc: Steve Wise
Acked-by: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Modules using the genpool allocator need to be able to destroy the data
structure when unloading.Signed-off-by: Steve Wise
Cc: Randy Dunlap
Cc: Dean Nelson
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
01 Oct, 2006
4 commits
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The existing implementation of ioremap_page_range(), which was taken
from i386, does this:flush_cache_all();
/* modify page tables */
flush_tlb_all();I think this is a bit defensive, so this patch changes the generic
implementation to do:/* modify page tables */
flush_cache_vmap(start, end);instead, which is similar to what vmalloc() does. This should still
be correct because we never modify existing PTEs. According to
James Bottomley:The problem the flush_tlb_all() is trying to solve is to avoid stale tlb
entries in the ioremap area. We're just being conservative by flushing
on both map and unmap. Technically what vmalloc/vfree does (only flush
the tlb on unmap) is just fine because it means that the only tlb
entries in the remap area must belong to in-use mappings.Signed-off-by: Haavard Skinnemoen
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Cc: Russell King
Cc: Mikael Starvik
Cc: Andi Kleen
Cc:
Cc: Ralf Baechle
Cc: Kyle McMartin
Cc: Martin Schwidefsky
Cc: Paul Mundt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch adds a generic implementation of ioremap_page_range() in
lib/ioremap.c based on the i386 implementation. It differs from the
i386 version in the following ways:* The PTE flags are passed as a pgprot_t argument and must be
determined up front by the arch-specific code. No additional
PTE flags are added.
* Uses set_pte_at() instead of set_pte()[bunk@stusta.de: warning fix]
]dhowells@redhat.com: nommu build fix]
Signed-off-by: Haavard Skinnemoen
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Cc: Russell King
Cc: Mikael Starvik
Cc: Andi Kleen
Cc:
Cc: Ralf Baechle
Cc: Kyle McMartin
Cc: Martin Schwidefsky
Cc: Paul Mundt
Signed-off-by: Adrian Bunk
Signed-off-by: David Howells
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
These two BUG_ON()s are redundant and undesired: we're checking for this
condition further on in the function, only better.Cc: Dave Jones
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The conditions got reserved. Also make rb_next() and rb_prev() check
for the empty condition.Signed-off-by: Jens Axboe
30 Sep, 2006
5 commits
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Constify two structs.
Correct some typos.Compile-tested and run-tested (module inserted) on 2.6.18-rc4-mm3.
Signed-off-by: Andreas Mohr
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Un-inlining rwsem_down_failed_common() (two callsites) reduced lib/rwsem.o
on my Athlon, gcc 4.1.2 from 5935 to 5480 Bytes (455 Bytes saved).I thus guess that reduced icache footprint (and better function caching) is
worth more than any function call overhead.Signed-off-by: Andreas Mohr
Cc: David Howells
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
In spinlock_debug.c, the spinloops call __delay() on every iteration.
Because that is an external function, (jiffies_per_loop * HZ), the loop's
iteration limit, gets recomputed every time. Caching it explicitly
prevents that.Signed-off-by: Chuck Ebbert
Cc: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
A list_del() debugging check. Has been in -mm for years. Dave moved
list_del() out-of-line in the debug case, so this is now suitable for
mainline.Cc: Dave Jones
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Dave Jones
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
27 Sep, 2006
4 commits
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Add SH to the list of platforms interested in Verbose BUG().
Signed-off-by: Paul Mundt
-
We had our own version, which serves no purpose. Simply
hook SH in to the generic one.Signed-off-by: Paul Mundt
-
* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: (225 commits)
[PATCH] Don't set calgary iommu as default y
[PATCH] i386/x86-64: New Intel feature flags
[PATCH] x86: Add a cumulative thermal throttle event counter.
[PATCH] i386: Make the jiffies compares use the 64bit safe macros.
[PATCH] x86: Refactor thermal throttle processing
[PATCH] Add 64bit jiffies compares (for use with get_jiffies_64)
[PATCH] Fix unwinder warning in traps.c
[PATCH] x86: Allow disabling early pci scans with pci=noearly or disallowing conf1
[PATCH] x86: Move direct PCI scanning functions out of line
[PATCH] i386/x86-64: Make all early PCI scans dependent on CONFIG_PCI
[PATCH] Don't leak NT bit into next task
[PATCH] i386/x86-64: Work around gcc bug with noreturn functions in unwinder
[PATCH] Fix some broken white space in ia32_signal.c
[PATCH] Initialize argument registers for 32bit signal handlers.
[PATCH] Remove all traces of signal number conversion
[PATCH] Don't synchronize time reading on single core AMD systems
[PATCH] Remove outdated comment in x86-64 mmconfig code
[PATCH] Use string instructions for Core2 copy/clear
[PATCH] x86: - restore i8259A eoi status on resume
[PATCH] i386: Split multi-line printk in oops output.
... -
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: (47 commits)
Driver core: Don't call put methods while holding a spinlock
Driver core: Remove unneeded routines from driver core
Driver core: Fix potential deadlock in driver core
PCI: enable driver multi-threaded probe
Driver Core: add ability for drivers to do a threaded probe
sysfs: add proper sysfs_init() prototype
drivers/base: check errors
drivers/base: Platform notify needs to occur before drivers attach to the device
v4l-dev2: handle __must_check
add CONFIG_ENABLE_MUST_CHECK
add __must_check to device management code
Driver core: fixed add_bind_files() definition
Driver core: fix comments in drivers/base/power/resume.c
sysfs_remove_bin_file: no return value, dump_stack on error
kobject: must_check fixes
Driver core: add ability for devices to create and remove bin files
Class: add support for class interfaces for devices
Driver core: create devices/virtual/ tree
Driver core: add device_rename function
Driver core: add ability for classes to handle devices properly
...
26 Sep, 2006
2 commits
-
This adds support for the Atmel AVR32 architecture as well as the AT32AP7000
CPU and the AT32STK1000 development board.AVR32 is a new high-performance 32-bit RISC microprocessor core, designed for
cost-sensitive embedded applications, with particular emphasis on low power
consumption and high code density. The AVR32 architecture is not binary
compatible with earlier 8-bit AVR architectures.The AVR32 architecture, including the instruction set, is described by the
AVR32 Architecture Manual, available fromhttp://www.atmel.com/dyn/resources/prod_documents/doc32000.pdf
The Atmel AT32AP7000 is the first CPU implementing the AVR32 architecture. It
features a 7-stage pipeline, 16KB instruction and data caches and a full
Memory Management Unit. It also comes with a large set of integrated
peripherals, many of which are shared with the AT91 ARM-based controllers from
Atmel.Full data sheet is available from
http://www.atmel.com/dyn/resources/prod_documents/doc32003.pdf
while the CPU core implementation including caches and MMU is documented by
the AVR32 AP Technical Reference, available fromhttp://www.atmel.com/dyn/resources/prod_documents/doc32001.pdf
Information about the AT32STK1000 development board can be found at
http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3918
including a BSP CD image with an earlier version of this patch, development
tools (binaries and source/patches) and a root filesystem image suitable for
booting from SD card.Alternatively, there's a preliminary "getting started" guide available at
http://avr32linux.org/twiki/bin/view/Main/GettingStarted which provides links
to the sources and patches you will need in order to set up a cross-compiling
environment for avr32-linux.This patch, as well as the other patches included with the BSP and the
toolchain patches, is actively supported by Atmel Corporation.[dmccr@us.ibm.com: Fix more pxx_page macro locations]
[bunk@stusta.de: fix `make defconfig']
Signed-off-by: Haavard Skinnemoen
Signed-off-by: Adrian Bunk
Signed-off-by: Dave McCracken
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Based on patch from David Rientjes , but
changed by AK.Optimizes the 64-bit hamming weight for x86_64 processors assuming they
have fast multiplication. Uses five fewer bitops than the generic
hweight64. Benchmark on one EMT64 showed ~25% speedup with 2^24
consecutive calls.Define a new ARCH_HAS_FAST_MULTIPLIER that can be set by other
architectures that can also multiply fast.Signed-off-by: Andi Kleen
