Connect up the fallocate() system call.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
I have had four seperate system lockups attributable to this exact problem
in two days of testing. Instead of trying to handle all the weird end
cases and wrap, how about changing it to look for exactly what we appear
to want.
The following patch removes a couple races in setup_APIC_timer. One occurs
when the HPET advances the COUNTER past the T0_CMP value between the time
the T0_CMP was originally read and when COUNTER is read. This results in
a delay waiting for the counter to wrap. The other results from the counter
wrapping.
This change takes a snapshot of T0_CMP at the beginning of the loop and
simply loops until T0_CMP has changed (a tick has happened).
<later>
I have one small concern about the patch. I am not sure it meets the intent
as well as it should. I think we are trying to match APIC timer interrupts up
with the hpet counter increment. The event which appears to be disturbing
this loop in our test environment is the NMI watchdog. What we believe has
been happening with the existing code is the setup_APIC_timer loop has read
the CMP value, and the NMI watchdog code fires for the first time. This
results in a series of icache miss slowdowns and by the time we get back to
things it has wrapped.
I think this code is trying to get the CMP as close to the counter value as
possible. If that is the intent, maybe we should really be testing against a
"window" around the CMP. Something like COUNTER = CMP+/2. It appears COUNTER
should get advanced every 89nSec (IIRC). The above seems like an unreasonably
small window, but may be necessary. Without documentation, I am not sure of
the original intent with this code.
In summary, this code fixes my boot hangs, but since I am not certain of the
intent of the existing code, I am not certain this has not introduced new bugs
or unexpected behaviors.
Signed-off-by: Robin Holt <holt@sgi.com>
Acked-by: Andi Kleen <ak@suse.de>
Cc: Vojtech Pavlik <vojtech@suse.cz>
Cc: "Aaron Durbin" <adurbin@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Every time a cpu is added via hotplug, we allocate the per-cpu MONDO
queues but we never free them up. Freeing isn't easy since the first
cpu gets this memory from bootmem.
Therefore, the simplest thing to do to fix this bug is to allocate the
queues for all possible cpus at boot time.
Signed-off-by: David S. Miller <davem@davemloft.net>
Check the cpu type in the OBP device tree before committing to
using the optimized Niagara memcpy and memset implementation.
If we don't recognize the cpu type, use a completely generic
version.
Signed-off-by: David S. Miller <davem@davemloft.net>
- Include atmel_lcdc.h in at91sam926{1,3}_devices.c
Signed-off-by: Jan Altenberg <jan.altenberg@linutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
With the availability of the iop-adma driver iop platforms can now use
their offload engines for md-raid5 (copy+xor) and net-dma (tcp receive
copy) offload.
Cc: Lennert Buytenhek <kernel@wantstofly.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
[POWERPC] Fixes for the SLB shadow buffer code
[POWERPC] Fix a compile warning in powermac/feature.c
[POWERPC] Fix a compile warning in pci_32.c
[POWERPC] Fix parse_drconf_memory() for 64-bit start addresses
[POWERPC] Fix num_cpus calculation in smp_call_function_map()
[POWERPC] ps3: Fix section mismatch in ps3/setup.c
[POWERPC] spufs: Fix affinity after introduction of node_allowed() calls
[POWERPC] Fix special PTE code for secondary hash bucket
[POWERPC] Expand RPN field to 34 bits when using 64k pages
On a machine with hardware 64kB pages and a kernel configured for a
64kB base page size, we need to change the vmalloc segment from 64kB
pages to 4kB pages if some driver creates a non-cacheable mapping in
the vmalloc area. However, we never updated with SLB shadow buffer.
This fixes it. Thanks to paulus for finding this.
Also added some write barriers to ensure the shadow buffer contents
are always consistent.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
...by using the pci_get API instead of the deprecated old stuff.
Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Some new machines use the "ibm,dynamic-reconfiguration-memory" property
to provide memory layout information, rather than via memory nodes.
There is a bug in the code to parse this property for start addresses
over 4GB; we store the start address in an unsigned int, which means
we throw away the high bits and add apparently duplicate regions.
This results in a BUG() in free_bootmem_core(). This fixes it by
using an unsigned long instead.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
In smp_call_function_map(), num_cpus is set to the number of online
CPUs minus one. However, if the CPU mask does not include all CPUs
(except the one we're running on), the routine will hang in the first
while() loop until the 8 second timeout occurs.
The num_cpus should be set to the number of CPUs specified in the mask
passed into the routine, after we've made any modifications to the
mask. With this change, we can also get rid of the call to
cpus_empty() and avoid adding another pass through the bitmask.
Signed-off-by: Kevin Corry <kevcorry@us.ibm.com>
Signed-off-by: Carl Love <carll@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
WARNING: vmlinux.o(.text+0x605d4): Section mismatch: reference to
.init.text:.__alloc_bootmem (between '.prealloc' and '.ps3_power_save')
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This patch fixes affinity reference point placement, which was not being
done in some situations, after the introduction of node_allowed() calls.
The previously used parameter, 'ctx', is just the iterator of the
previous list_for_each_entry_reverse loop, and its value might be
invalid at the end of the loop. Also, the right context to seek
for information when defining the reference ctx location
_is_ the reference ctx.
Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
The code for mapping special 4k pages on kernels using a 64kB base
page size was missing the code for doing the RPN (real page number)
manipulation when inserting the hardware PTE in the secondary hash
bucket. It needs the same code as has already been added to the
code that inserts the HPTE in the primary hash bucket. This adds it.
Spotted by Ben Herrenschmidt.
Signed-off-by: Paul Mackerras <paulus@samba.org>
This patch fixes up the defconfig for various sh7751r based boards
by updating them to the single cpu subtype CONFIG_CPU_SUBTYPE_SH7751R.
The following sh4 boards are updated: hs7751rvoip, landisk, lboxre2,
systemh, titan.
The current defconfigs with two subtypes defined trigger a configuration
bug which result in kernel configurations with missing board support
code. We end up with kernels without board code and with generic machvec
only.
So we need this patch to make sure the board code gets compiled in.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch makes sure cf support is enabled on R2D-PLUS but disabled
on R2D-1. Without this fix R2D-1 boards hang on bootup.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
- Disable CONFIG_SH_DMA to avoid boot up freeze on R2D-1
- Disable CONFIG_SH_STANDARD_BIOS to support R2D-PLUS boot loaders
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Updated the snapgear defconfig to get a booting kernel.
Signed-off-by: David McCullough <david_mccullough@au.securecomputing.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Add a missing =m constraint to the EDD-probing code, that could have
caused improper dead-code elimination.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Add memory operand constraint and write-only modifier to the inline
assembly to effect the writing of the EDID block to boot_params.edid_info.
Without this, gcc would think the EDID query was dead code and would
eliminate it.
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
[IA64] ITC: Reduce rating for ITC clock if ITCs are drifty
[IA64] SN2: Fix up sn2_rtc clock
[IA64] Fix wrong access to irq_desc[] in iosapic_register_intr().
[IA64] Fix possible race in destroy_and_reserve_irq()
[IA64] Fix registered interrupt check
[IA64] Remove a few duplicate includes
[IA64] Allow smp_call_function_single() to current cpu
[IA64] fix a few section mismatch warnings
Enable the MB93090 motherboard's MB86943 PCI arbiter correctly by assigning to
the register rather than comparing against it. This is required to support
bus mastering.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Make sure to reduce the rating of the ITC clock if ITCs are drifty. If they
are drifting then we have not synchronized the ITC values, nor are we doing
the jitter compensation (useless since drift may increase the differentials
arbitrarily).
Without this patch it is possible that the ITC clock becomes selected as
the system clock on systems with drifty ITCs which will result in
nanosleep hanging.
One can still select the itc clock manually on such systems via
clocksource=itc
(Produces nice hangs on SGI Altix.)
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
If the sn2_rtc clock is present then it is a must have since sn2_rtc
provides a synchronized time source on Altix systems. So elevate
the priority to 450. Otherwise the ITC would take precendence. Altix
systems currently do not boot because the ITC clocksource is broken. It
seems to assume that ITCs are synchronized and as a result nanosleep
hangs (may be fixed in a different patch).
While we are at it: Remove the sn2_mc definition. The sn2_rtc has a fixed
address. No point in reading the address from memory. Removing it avoids
touching one cacheline.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
In error path we must unlock irq_desc[irq].lock before we change
'irq'.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
SH-X3 has the FPU exceptions on different vectors completely,
patch in do_fpu_state_restore() to the proper vectors.
Results in a much happier userspace.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
When reading the cached TTB value and extracting the pgd, we
accidentally applied a __va() to it and bumped it off in to bogus
space which ended up causing multiple faults in the error path.
Fix it up so unhandled faults don't do strange and highly unorthodox
things when oopsing.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
fault-nommu defines the page fault handler stubs for SH-3/4 parts,
but is not needed on SH-2/SH-2A now that the entry code has been
logically separated.
Add it in for SH-3 and SH-4 explicitly.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
We were missing the trace_hardirqs_on() instrumentation in the nommu
case, resync with the MMU version of the page fault handler to have
this behaving consistently. Also explicitly re-enable IRQs now that
the assembly code isn't doing it for us any more.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
In the SH-3/4 TLB access violation path we were enabling IRQs before
the call in to trace_hardirqs_on(), which ended up triggering:
if (DEBUG_LOCKS_WARN_ON(!irqs_disabled()))
return;
in kernel/lockdep.c:2031. Fix this up by removing the early re-enable,
we were already re-enabling IRQs post-trace_hardirqs_on() already, so
the semantics are now as was initially intended.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog: (28 commits)
[WATCHDOG] Fix pcwd_init_module crash
[WATCHDOG] ICH9 support for iTCO_wdt
[WATCHDOG] 631xESB/632xESB support for iTCO_wdt - add all LPC bridges
[WATCHDOG] 631xESB/632xESB support for iTCO_wdt
[WATCHDOG] omap_wdt.c - default error for IOCTL is -ENOTTY
[WATCHDOG] Return value of nonseekable_open
[WATCHDOG] mv64x60_wdt: Rework the timeout register manipulation
[WATCHDOG] mv64x60_wdt: disable watchdog timer when driver is probed
[WATCHDOG] mv64x60_wdt: Support the WDIOF_MAGICCLOSE feature
[WATCHDOG] mv64x60_wdt: Add a module parameter to change nowayout setting
[WATCHDOG] mv64x60_wdt: Add WDIOC_SETOPTIONS ioctl support
[WATCHDOG] mv64x60_wdt: Support for WDIOC_SETTIMEOUT ioctl
[WATCHDOG] mv64x60_wdt: Fix WDIOC_GETTIMEOUT return value
[WATCHDOG] mv64x60_wdt: Check return value of nonseekable_open
[WATCHDOG] mv64x60_wdt: Add arch/powerpc platform support
[WATCHDOG] mv64x60_wdt: Get register address from platform data
[WATCHDOG] mv64x60_wdt: set up platform_device in platform code
[WATCHDOG] ensure mouse and keyboard ignored in w83627hf_wdt
[WATCHDOG] s3c2410_wdt: fixup after arch include moves
[WATCHDOG] git-watchdog-typo
...
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-x86setup:
[x86 setup] EDD: Fix the computation of the MBR sector buffer
[x86 setup] Newline after setup signature failure message
x86 boot code comments typos
C files should include the header files that prototype their functions.
Eliminates a sparse warning:
warning: symbol 'check_bugs' was not declared. Should it be static?
Signed-off-by: Josh Triplett <josh@kernel.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
C files should include the header files that prototype their functions.
Eliminates a sparse warning:
warning: symbol 'check_bugs' was not declared. Should it be static?
Signed-off-by: Josh Triplett <josh@kernel.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
On make install I get the this error:
...
sh /work/crazy/linux-git/linux-2.6/arch/i386/boot/install.sh
2.6.22-g4eb6bf6b arch/i386/boot/bzImage System.map "/boot"
/work/crazy/linux-git/linux-2.6/arch/i386/boot/install.sh: line 54:
/etc/lilo/install: No such file or directory
make[1]: *** [install] Error 127
...
I don't use and don't have lilo installed on this system. The attached
patch fixes the problem for me.
Signed-off-by: Gabriel Craciunescu <nix.or.die@googlemail.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The arm26 port has been in a state where it was far from even compiling
for quite some time.
Ian Molton agreed with the removal.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: Ian Molton <spyro@f2s.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/i386/kernel/apm.c: In function 'apm_init':
arch/i386/kernel/apm.c:2240: warning: format '%lx' expects type 'long
unsigned int', but argument 3 has type 'u32'
apm_info.bios.offset is of type 'u32'.
Signed-off-by: Eugene Teo <eugeneteo@kernel.sg>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Adrian Bunk
David Howells
Robin Holt
Bryan Wu
David S. Miller
Russell King
Jan Altenberg
Dan Williams
Linus Torvalds
Michael Neuling
Segher Boessenkool
Michael Ellerman
Kevin Corry
Stephen Rothwell
Andre Detsch
Paul Mackerras
Magnus Damm
David McCullough
H. Peter Anvin
Antonino A. Daplas
Christoph Lameter
Kenji Kaneshige
Paul Mundt
Andrew Morton
Josh Triplett
Michael Tokarev
Gabriel C
Jesper Juhl
Adrian Bunk
Eugene Teo