Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

These were used by the defunct umsdos code only.
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Add atomic_sub_and_test() to sparc32, implemented in terms of
atomic_sub_return(), so reiser4 can be simultaneously microoptimized for
x86 and made to pass compilation testing on sparc32.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch declares atomic_add_return() as an alias of __atomic_add().
atomic64_add_return(),atomic_sub_return() and atomic64_sub_return() are
same.
Signed-off-by: KaiGai, Kohei <kaigai@ak.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch implements atomic_inc_return() and so on for ARM26.  Because
Hugh says that SMP is not supported in arm26, it is implemented by normal
operations between local_irq_save() and local_irq_restore() like another
atomic operations.
Signed-off-by: KaiGai, Kohei <kaigai@ak.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch declares atomic_inc_return() as the alias of atomic_add_return()
and atomic_dec_return() as an alias of atomic_dec_return().
Signed-off-by: KaiGai, Kohei <kaigai@ak.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Signed-off-by: KaiGai, Kohei <kaigai@ak.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch implements atomic_inc_return() and so on for i386, and includes
runtime check whether CPU is legacy 386.
Signed-off-by: KaiGai, Kohei <kaigai@ak.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

We didn't use the 'usercompr' field before recently.  Unfortunately we didn't
set it to zero either, so there's a lot of file systems out there with it set
to 0x5a.  Deal with that rather than getting confused.
Signed-Off-By: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Code section errors in i386/io_apic.c found by scripts/reference_init.pl.
Looks like they could cause problems for a few drivers or in a real hotplug
environment.

Error: ./arch/i386/kernel/io_apic.o .text refers to 000018ff R_386_PC32        .init.text

call chain:
  snd_mpu401_acpi_resource
    acpi_register_gsi
      mp_register_gsi
	io_apic_set_pci_routing
{A}	  ioapic_register_intr
	    IO_APIC_irq_trigger
	      find_irq_entry

Error: ./arch/i386/kernel/io_apic.o .text refers to 00001967 R_386_PC32        .init.text

	(as above thru {A}, then:)
	  IO_APIC_irq_trigger
	    irq_trigger
	      MPBIOS_trigger	>> removing __init from this led to
				   needing to remove __init from
				   EISA_ELCR also.
Signed-off-by: Randy Dunlap <rddunlap@osdl.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Fix a bug that arch/x86_64/lib/copy_user:copy_user_generic will return a
wrong value when exception happens.

In the case the address is not 8-byte aligned (i.e.  go into
Lbad_alignment), if exception happens in Ls11, %rdx will be wrong number of
copied bytes, then copy_user_generic returns wrong value.  It also fixed a
bug of zeroing wrong number of bytes of destination at this situation.  (In
Lzero_rest)
Signed-off-by: Yanmin Zhang <yanmin.zhang@intel.com>
Signed-off-by: Nanhai Zou <nanhai.zou@intel.com>
Signed-off-by: Gordon Jin <gordon.jin@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Split CONFIG_NUMA_EMU and CONFIG_K8_NUMA because they are independent.
Signed-off-by: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Originally suggested by Zwane Mwaikumbo

Ignore all ACPI timer overrides on all Nvidia boards.  The fallback doesn't
work and no Nvidia boards needs a timer override.  But some buggy BIOS have
it anyways.

Also enable IO-APIC mode by default for Nvidia then.

Thanks to Andy Currid for confirming this.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Add an kstack= option to configure how much stack should be printed on a
oops.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Add an notsc option so that it can be turned off again.

This may be useful on the Summit, but will only work when there is a HPET
fallback.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

x86-64 MP kernels always used HPET timing when available.  This was done
because AMD systems don't have synchronized TSCs in all cases.  On Intel
this is not true (except Summit), so use faster TSC timing for those.

Also only enable HPET gettimeofday when there is more than one CPU online.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Initialize HPET char driver
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Suggested by Ingo Molnar.

Drop APIC level workaround for old IO-APICs on x86-64 because it is a
significant part of interrupt handling time.  x86-64 only runs on modern
chipsets that probably don't have this bug.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

module_param_array() takes a variable to put the number of elements in. 
Looking through the uses, many people don't care, so they declare a dummy
or share one variable between several parameters.  The latter is
problematic because sysfs uses that number to decide how many to display.

The solution is to change the variable arg to a pointer, and if the pointer
is NULL, use the "max" value.  This change is fairly small, but fixing up
the callers is a lot of (trivial) churn.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

into ppc970.osdl.org:/home/torvalds/v2.6/linux

into agluck-lia64.sc.intel.com:/data/home/aegl/BK/linux-ia64-release-2.6.10

Signed-off-by: Patrick Gefre <pfg@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

During peak utilization periods, the first interface on a node has
an inordinately large amount of contention.  This is due to all
cpus starting their scan for an interface at 0.  This patch distributes
that based upon the slice the requesting cpu is attached to.
 
Signed-off-by: Robin Holt
Signed-off-by: Tony Luck <tony.luck@intel.com>

The SN2 Block Transfer Engine occassionally fails to send a notification
that it has completed a transfer to the kernel.  This patch adds a
timeout mechanism which will detect the failure, reset the interface,
and then retry the transfer.
 
Signed-off-by: Robin Holt
Signed-off-by: Tony Luck <tony.luck@intel.com>

Signed-off-by: Patrick Gefre <pfg@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

If all bte interfaces are in use, the current code will leave the
bte pointer set when exiting from the loop trying to locate an
interface to use.  This results in two processes using the same
interface and both trying to free the same one.  With a
premptible kernel, this results in the preempt count getting
off.
Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

into ppc970.osdl.org:/home/torvalds/v2.6/linux

into ppc970.osdl.org:/home/torvalds/v2.6/linux

This includes a fuller definition of the 8250 and compatible bits,
and adding notes where the definition varies between different
chips.

This also fixes the following build error:

drivers/serial/8250.c:185: error: `UART_FCR_R_TRIG_10'

Some serial drivers receive their serial port device information via
the device model.  This unfortunately means that the selected port
may not be available when the console subsystem initialises, so we
must keep trying to register the console after each port is added.

This allows 8250 PCI ports to register with their correct device
structures.

serial8250_register_port()/serial8250_unregister_port() has the
capability of registering ports with their struct device nodes,
which allows sysfs to indicate which tty devices belong to which
hardware devices.

We also add a serial8250 platform device driver in an initial
attempt at PM for ISA ports.  However, I'm leaving out the
platform device for the time being since adding that would cause
potential oops issues.

Convert port autoprobing to set up->capabilities as it discovers
various capabilities of the port.  Warn when the detected
capabilities do not match those in the uart_config table.

It's pointless accessing the LSR value via a pointer all the time -
it prevents the compiler optimising it.  Also, ensure that we
recognise a break sent during a kernel printk correctly.

Add a bit of explaination why we only turn off the transmitter if
we are called from uart_stop().

Add UART_CAP_AFE, and use this to enable TI16C750 flow control,
but only if we have 32 bytes or more of FIFO.

This allows us to adapt the FCR for each port type in a much more
flexible way, and allows us to set the transmit trigger levels.

Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>