26 Sep, 2006
40 commits
-
Implement async reads for swsusp resuming.
Crufty old PIII testbox:
15.7 MB/s -> 20.3 MB/sSony Vaio:
14.6 MB/s -> 33.3 MB/sI didn't implement the post-resume bio_set_pages_dirty(). I don't really
understand why resume needs to run set_page_dirty() against these pages.It might be a worry that this code modifies PG_Uptodate, PG_Error and
PG_Locked against the image pages. Can this possibly affect the resumed-into
kernel? Hopefully not, if we're atomically restoring its mem_map?Cc: Pavel Machek
Cc: "Rafael J. Wysocki"
Cc: Jens Axboe
Cc: Laurent Riffard
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add some instrumentation to the swsusp readin code to show what bandwidth
we're achieving.Cc: Pavel Machek
Cc: "Rafael J. Wysocki"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Switch the swsusp writeout code from 4k-at-a-time to 4MB-at-a-time.
Crufty old PIII testbox:
12.9 MB/s -> 20.9 MB/sSony Vaio:
14.7 MB/s -> 26.5 MB/sThe implementation is crude. A better one would use larger BIOs, but wouldn't
gain any performance.The memcpys will be mostly pipelined with the IO and basically come for free.
The ENOMEM path has not been tested. It should be.
Cc: Pavel Machek
Cc: "Rafael J. Wysocki"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add some instrumentation to the swsusp writeout code to show what bandwidth
we're achieving.Cc: Pavel Machek
Cc: "Rafael J. Wysocki"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add the DIV_ROUND_UP() helper macro: divide `n' by `d', rounding up.
Stolen from the gfs2 tree(!) because the swsusp patches need it.
Signed-off-by: Steven Whitehouse
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
There appears to be a typo in the EV56 config option. NORITAKE and PRIMO are
be able to set a variation of either.Signed-off-by: Daniel Drake
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The functions prepare_set and post_set in kernel/cpu/mtrr/generic.c wrap
the spinlock set_atomicity_lock: prepare_set returns with the lock held,
and post_set releases the lock without acquiring it. Add lock annotations
to these two functions so that sparse can check callers for lock pairing,
and so that sparse will not complain about these functions since they
intentionally use locks in this manner.Signed-off-by: Josh Triplett
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove all references to xtime in i386 and replace them w/
get/set_timeofday(). Requires some ugly and uncertain changes to APM, but
has been lightly tested to work.Signed-off-by: John Stultz
Acked-by: Ingo Molnar
Acked-by: Mikael Pettersson
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Voyager fiddles with current->signal.tty without locking. It turns out
that the code in question has already cleared current->signal.tty correctly
because daemonize() does the right thing already.The signal handling also appears to be incorrect as it does an unprotected
sigfillset that also appears unneccessary. As I don't have a bowtie and am
therefore not a qualified voyager maintainer I leave that to James.Signed-off-by: Alan Cox
Acked-by: James Bottomley
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
If we're going to implement smp_call_function_single() on three architecture
with the same prototype then it should have a declaration in a
non-arch-specific header file.Move it into .
Cc: Stephane Eranian
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Continiung the series of small patches necessary for the perfmon subsystem,
here is a patch that adds support for the smp_call_function_single()
function for i386. It exists for almost all other architectures but i386.
The perfmon subsystem needs it in one case to free some state on a
designated remote CPU.Signed-off-by: Stephane Eranian
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove unnecessary include from efi_stub.S
Signed-off-by: Zachary Amsden
Signed-off-by: Rusty Russell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Move ptep_set_access_flags to be closer to the other ptep accessors, and make
the indentation standard.Signed-off-by: Zachary Amsden
Signed-off-by: Rusty Russell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Move the __HAVE_ARCH_PTEP defines to accompany the function definitions.
Anything else is just a complete nightmare to track through the 2/3-level
paging code, and this caused duplicate definitions to be needed (pte_same),
which could have easily been taken care of with the asm-generic pgtable
functions.Signed-off-by: Zachary Amsden
Signed-off-by: Rusty Russell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Parsing generic pgtable.h in assembler is simply crazy. None of this file is
needed in assembler code, and C inline functions and structures routine break
one or more different compiles.Signed-off-by: Zachary Amsden
Signed-off-by: Rusty Russell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The current VMSPLIT Kconfig option is disabled whenever highmem is on.
This is a bit screwy because the people who need to change VMSPLIT the most
tend to be the ones with highmem and constrained lowmem.So, remove the highmem dependency. But, re-include the dependency for the
"full 1GB of lowmem" option. You can't have the full 1GB of lowmem and
highmem because of the need for the vmalloc(), kmap(), etc... areas.I thought there would be at least a bit of tweaking to do to
get it to work, but everything seems OK.Boot tested on a 4GB x86 machine, and a 12GB 3-node NUMA-Q:
elm3b82:~# cat /proc/meminfo
MemTotal: 3695412 kB
MemFree: 3659540 kB
...
LowTotal: 2909008 kB
LowFree: 2892324 kB
...
elm3b82:~# zgrep PAE /proc/config.gz
CONFIG_X86_PAE=ylarry:~# cat /proc/meminfo
MemTotal: 11845900 kB
MemFree: 11786748 kB
...
LowTotal: 2855180 kB
LowFree: 2830092 kBSigned-off-by: Dave Hansen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
I've come across some problems with the assembly version of the ELFNOTE
macro currently in -mm. (in
x86-put-note-sections-into-a-pt_note-segment-in-vmlinux.patch)The first is that older gas does not support :varargs in .macro
definitions (in my testing 2.17 does while 2.15 does not, I don't know
when it became supported). The Changes file says binutils >= 2.12 so I
think we need to avoid using it. There are no other uses in mainline or
-mm. Old gas appears to just ignore it so you get "too many arguments"
type errors.Secondly it seems that passing strings as arguments to assembler macros
is broken without varargs. It looks like they get unquoted or each
character is treated as a separate argument or something and this causes
all manner of grief. I think this is because of the use of -traditional
when compiling assembly files.Therefore I have translated the assembler macro into a pre-processor
macro.I added the desctype as a separate argument instead of including it with
the descdata as the previous version did since -traditional means the
ELFNOTE definition after the #else needs to have the same number of
arguments (I think so anyway, the -traditional CPP semantics are pretty
fscking strange!).With this patch I am able to define elfnotes in assembly like this with
both old and new assemblers.ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS, .asciz, "linux")
ELFNOTE(Xen, XEN_ELFNOTE_GUEST_VERSION, .asciz, "2.6")
ELFNOTE(Xen, XEN_ELFNOTE_XEN_VERSION, .asciz, "xen-3.0")
ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE, .long, __PAGE_OFFSET)Which seems reasonable enough.
Signed-off-by: Ian Campbell
Acked-by: Jeremy Fitzhardinge
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch will pack any .note.* section into a PT_NOTE segment in the output
file.To do this, we tell ld that we need a PT_NOTE segment. This requires us to
start explicitly mapping sections to segments, so we also need to explicitly
create PT_LOAD segments for text and data, and map the sections to them
appropriately. Fortunately, each section will default to its previous
section's segment, so it doesn't take many changes to vmlinux.lds.S.This only changes i386 for now, but I presume the corresponding changes for
other architectures will be as simple.This change also adds , which defines C and Assembler macros
for actually creating ELF notes.Signed-off-by: Jeremy Fitzhardinge
Cc: Eric W. Biederman
Cc: Hollis Blanchard
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add a boot parameter to reserve high linear address space for hypervisors.
This is necessary to allow dynamically loaded hypervisor modules, which might
not happen until userspace is already running, and also provides a useful tool
to benchmark the performance impact of reduced lowmem address space.Signed-off-by: Zachary Amsden
Signed-off-by: Chris Wright
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Make __FIXADDR_TOP a variable, so that it can be set to not get in the way of
address space a hypervisor may want to reserve.Original patch by Gerd Hoffmann
Signed-off-by: Jeremy Fitzhardinge
Signed-off-by: Chris Wright
Cc: Gerd Hoffmann
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
It's a little neater, and also means only one place to patch for
paravirtualization.Signed-off-by: Rusty Russell
Signed-off-by: Jeremy Fitzhardinge
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add "always lock'd" implementations of set_bit, clear_bit and change_bit and
the corresponding test_and_ functions. Also add "always lock'd"
implementation of cmpxchg. These give guaranteed strong synchronisation and
are required for non-SMP kernels running on an SMP hypervisor.Signed-off-by: Ian Pratt
Signed-off-by: Christian Limpach
Signed-off-by: Chris Wright
Signed-off-by: Jeremy Fitzhardinge
Cc: Christoph Lameter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
arch/i386/kernel/reboot.c defines its own struct to describe an ldt entry: it
should use struct Xgt_desc_struct (currently load_ldt is a macro, so doesn't
complain: paravirt patches make it warn).Signed-off-by: Rusty Russell
Signed-off-by: Jeremy Fitzhardinge
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Clean up module initalization for apm.c. I had started by auditing for
proper return code checks in misc_register, but I found that in the event
of an initalization failure, a proc file and a kernel thread were left
hanging out. this patch properly cleans up those loose ends on any
initalization failure.Signed-off-by: Neil Horman
Acked-by: Stephen Rothwell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Rolf Eike Beer
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
show_registers() tries to dump failing code starting 43 bytes before the
offending instruction, but this address can be bad, for example in a device
driver where the failing instruction is less than 43 bytes from the start
of the driver's code. When that happens, try to dump code starting at the
failing instruction instead of printing no code at all.Signed-off-by: Chuck Ebbert
Cc: Andi Kleen
Cc: Keith Owens
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
To prevent the emulated RTC timer from stopping when interrupts are delayed
for too long, disable interrupts around all of the register initialization,
and check that the interrupt handler did not schedule the next interrupt in
the past.Signed-off-by: Clemens Ladisch
Cc: Venkatesh Pallipadi
Cc: Andi Kleen
Cc: Vojtech Pavlik
Cc: Robert Picco
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
FRegister a platform device for the AT49BV6416 NOR flash chip on the ATSTK1000
development board for use by the physmap MTD driver.The SMC timings are set up before the platform device is registered so that no
board-specific mapping driver is necessary.Signed-off-by: Haavard Skinnemoen
Cc: David Woodhouse
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patchset adds the necessary drivers and infrastructure to access the
external flash on the ATSTK1000 board through the MTD subsystem. With this
stuff in place, it will be possible to use a jffs2 filesystem stored in the
external flash as a root filesystem. It might also be possible to update the
boot loader if you drop the write protection of partition 0.As suggested by David Woodhouse, I reworked the patches to use the physmap
driver instead of introducing a separate mapping driver for the ATSTK1000.
I've also cleaned up the hsmc header by removing useless comments and
converting spaces to tabs (my headerfile generator needs some work.)Unfortunately, I couldn't unlock the flash in fixup_use_atmel_lock because the
erase regions hadn't been set up yet, so I had to do it from cfi_amdstd_setup
instead.This patch:
This adds a simple API for configuring the static memory controller along with
an implementation for the Atmel HSMC.Signed-off-by: Haavard Skinnemoen
Cc: David Woodhouse
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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 -
The third argument of au1xxx_dbdma_chan_alloc's callback function is not
used anywhere.Signed-off-by: Ralf Baechle
Cc: David Howells
Cc: Russell King
Cc: Alan Cox
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Optimise ffs(x) by using fls(x & x - 1) which we optimise to use the SCAN
instruction.Signed-off-by: David Howells
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Implement fls64() for FRV without recource to conditional jumps.
Signed-off-by: David Howells
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix FRV fls() to handle bit 31 being set correctly (it should return 32 not 0).
Signed-off-by: David Howells
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Permit __do_IRQ() to be dispensed with based on a configuration option.
Signed-off-by: David Howells
Cc: Benjamin Herrenschmidt
Cc: Thomas Gleixner
Cc: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Improve FRV's use of generic IRQ handling:
(*) Use generic_handle_irq() rather than __do_IRQ() as the latter is obsolete.
(*) Don't implement enable() and disable() ops as these will fall back to
using unmask() and mask().(*) Provide mask_ack() functions to avoid a call each to mask() and ack().
(*) Make the cascade handlers always return IRQ_HANDLED.
(*) Implement the mask() and unmask() functions in the same order as they're
listed in the ops table.Signed-off-by: David Howells
Cc: Benjamin Herrenschmidt
Cc: Thomas Gleixner
Cc: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Make the FRV arch use the generic IRQ code rather than having its own
routines for doing so.Signed-off-by: David Howells
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
As David Howells points out, binfmt_elf sometimes uses
off_t, sometimes uses loff_t. Use loff_t throughout.Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Take tty_mutex when accessing ->signal->tty in selinux code. Noted by Alan
Cox. Longer term, we are looking at refactoring the code to provide better
encapsulation of the tty layer, but this is a simple fix that addresses the
immediate bug.Signed-off-by: Stephen Smalley
Acked-by: Alan Cox
Acked-by: James Morris
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch converts the semaphore in the superblock security struct to a
mutex. No locking changes or other code changes are done.Signed-off-by: Eric Paris
Acked-by: Stephen Smalley
Acked-by: James Morris
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
