26 May, 2008
1 commit
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init/Kconfig contains a list of configs that are searched
for if 'make *config' are used with no .config present.
Extend this list to look at the config identified by
ARCH_DEFCONFIG.With this change we now try the defconfig targets last.
This fixes a regression reported
by: Linus TorvaldsSigned-off-by: Sam Ravnborg
Cc: Linus Torvalds
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: "H. Peter Anvin"
11 May, 2008
1 commit
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select NEW_LEDS for now until the Kconfig dependencies have been
fixed.Signed-off-by: Ingo Molnar
Signed-off-by: Thomas Gleixner
08 May, 2008
1 commit
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commit e26a28d190304d910ee49b81cbfe6d9241f56e86
x86: olpc build fixwas a fix to a patch that was withdrawn/delayed and then erroneously
commited to x86.git. Revert it.Signed-off-by: Ingo Molnar
Signed-off-by: Thomas Gleixner
06 May, 2008
1 commit
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add the HAVE_UNSTABLE_SCHED_CLOCK, for architectures to select.
the next change utilizes it.
Signed-off-by: Ingo Molnar
05 May, 2008
1 commit
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CONFIG_OLPC needs to depend on MGEODE_LX
Signed-off-by: Thomas Gleixner
Signed-off-by: Ingo Molnar
01 May, 2008
2 commits
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Daniel Drake reported:
In 2.6.23, if you unpacked a kernel source tarball and then
ran "make menuconfig" you'd be presented with this message:
# using defaults found in arch/i386/defconfigand the default options would be set.
The same thing in 2.6.24 does not give you any "using defaults" message, and
the default config options within menuconfig are rather blank (e.g. no PCI
support). You can work around this by explicitly running "make defconfig"
before menuconfig, but it would be nice to have the behaviour the way it was
for 2.6.23 (and the way it still is for other archs).Fixed by adding a x86 specific defconfig list to Kconfig.
Fixes: http://bugzilla.kernel.org/show_bug.cgi?id=10470
Tested-by: dsd@gentoo.org
Signed-off-by: Sam Ravnborg
Signed-off-by: Ingo Molnar
Signed-off-by: Thomas Gleixner -
the 'reboot_force' flag is a notion that non-PC subarchitectures do
not have.also, unify the X86_BIOS_REBOOT option between 32-bit and 64-bit
and get rid of a few unnecessary Kconfig and Makefile complications
that way.Signed-off-by: Ingo Molnar
Signed-off-by: Thomas Gleixner
29 Apr, 2008
2 commits
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This adds support for OLPC XO hardware. Open Firmware on XOs don't contain
the VSA, so it is necessary to emulate the PCI BARs in the kernel. This also
adds functionality for running EC commands, and a CONFIG_OLPC.A number of OLPC drivers depend upon CONFIG_OLPC.
olpc_ec_timeout is a hack to work around Embedded Controller bugs.
[akpm@linux-foundation.org: build fix]
[akpm@linux-foundation.org: geode_has_vsa build fix]
[akpm@linux-foundation.org: olpc_register_battery_callback doesn't exist]
Signed-off-by: Andres Salomon
Acked-by: Ingo Molnar
Cc: Thomas Gleixner
Cc: Andi Kleen
Cc: Jordan Crouse
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
iommu_is_span_boundary in lib/iommu-helper.c was exported for PARISC IOMMUs
(commit 3715863aa142c4f4c5208f5f3e5e9bac06006d2f). SWIOTLB can use it instead
of the homegrown function.Signed-off-by: FUJITA Tomonori
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: H. Peter Anvin
Cc: Tony Luck
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
28 Apr, 2008
2 commits
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Turn CONFIG_DMI into a selectable option if EMBEDDED is defined, in
order to be able to remove the DMI table scanning code if it's not
needed, and then reduce the kernel code size.With CONFIG_DMI (i.e before) :
text data bss dec hex filename
1076076 128656 98304 1303036 13e1fc vmlinuxWithout CONFIG_DMI (i.e after) :
text data bss dec hex filename
1068092 126308 98304 1292704 13b9a0 vmlinuxResult:
text data bss dec hex filename
-7984 -2348 0 -10332 -285c vmlinuxThe new option appears in "Processor type and features", only when
CONFIG_EMBEDDED is defined.This patch is part of the Linux Tiny project, and is based on previous work
done by Matt Mackall .Signed-off-by: Thomas Petazzoni
Acked-by: Ingo Molnar
Cc: Thomas Gleixner
Cc: "H. Anvin"
Signed-off-by: Matt Mackall
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Not all architectures define cache_line_size() so as suggested by Andrew move
the private implementations in mm/slab.c and mm/slob.c to .Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: H. Peter Anvin
Reviewed-by: Christoph Lameter
Signed-off-by: Pekka Enberg
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
27 Apr, 2008
4 commits
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Add basic KVM paravirt support. Avoid vm-exits on IO delays.
Signed-off-by: Marcelo Tosatti
Signed-off-by: Avi Kivity -
This is the guest part of kvm clock implementation
It does not do tsc-only timing, as tsc can have deltas
between cpus, and it did not seem worthy to me to keep
adjusting them.We do use it, however, for fine-grained adjustment.
Other than that, time comes from the host.
[randy dunlap: add missing include]
[randy dunlap: disallow on Voyager or Visual WS]Signed-off-by: Glauber de Oliveira Costa
Signed-off-by: Randy Dunlap
Signed-off-by: Avi Kivity -
…nux-2.6-x86-optimized-inlining
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-optimized-inlining:
generic: make optimized inlining arch-opt-in
x86: add optimized inlining -
Linus pointed it out that PAT should not depend on NONPROMISC_DEVMEM.
Also make PAT non-default.
Signed-off-by: Ingo Molnar
Signed-off-by: Linus Torvalds
26 Apr, 2008
1 commit
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Stephen Rothwell reported that linux-next did not build on powerpc64.
make optimized inlining dependent on architecture opt-in.
Reported-by: Stephen Rothwell
Signed-off-by: Ingo Molnar
25 Apr, 2008
1 commit
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Reported-by: Adrian Bunk
Signed-off-by: Ingo Molnar
22 Apr, 2008
1 commit
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…linux-2.6-sched-devel
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched-devel: (62 commits)
sched: build fix
sched: better rt-group documentation
sched: features fix
sched: /debug/sched_features
sched: add SCHED_FEAT_DEADLINE
sched: debug: show a weight tree
sched: fair: weight calculations
sched: fair-group: de-couple load-balancing from the rb-trees
sched: fair-group scheduling vs latency
sched: rt-group: optimize dequeue_rt_stack
sched: debug: add some debug code to handle the full hierarchy
sched: fair-group: SMP-nice for group scheduling
sched, cpuset: customize sched domains, core
sched, cpuset: customize sched domains, docs
sched: prepatory code movement
sched: rt: multi level group constraints
sched: task_group hierarchy
sched: fix the task_group hierarchy for UID grouping
sched: allow the group scheduler to have multiple levels
sched: mix tasks and groups
...
20 Apr, 2008
2 commits
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* Here is a simple patch to use an allocated array of cpumasks to
represent cpumask_of_cpu() instead of constructing one on the stack.
It's based on the Kconfig option "HAVE_CPUMASK_OF_CPU_MAP" which is
currently only set for x86_64 SMP. Otherwise the the existing
cpumask_of_cpu() is used but has been changed to produce an lvalue
so a pointer to it can be used.Cc: H. Peter Anvin
Signed-off-by: Christoph Lameter
Signed-off-by: Mike Travis
Signed-off-by: Ingo Molnar -
For example, If the physical address layout on a two node system with 8 GB
memory is something like:
node 0: 0-2GB, 4-6GB
node 1: 2-4GB, 6-8GBCurrent kernels fail to boot/detect this NUMA topology.
ACPI SRAT tables can expose such a topology which needs to be supported.
Signed-off-by: Suresh Siddha
Signed-off-by: Ingo Molnar
Signed-off-by: Thomas Gleixner
18 Apr, 2008
3 commits
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* git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-kgdb:
kgdb: always use icache flush for sw breakpoints
kgdb: fix SMP NMI kgdb_handle_exception exit race
kgdb: documentation fixes
kgdb: allow static kgdbts boot configuration
kgdb: add documentation
kgdb: Kconfig fix
kgdb: add kgdb internal test suite
kgdb: fix several kgdb regressions
kgdb: kgdboc pl011 I/O module
kgdb: fix optional arch functions and probe_kernel_*
kgdb: add x86 HW breakpoints
kgdb: print breakpoint removed on exception
kgdb: clocksource watchdog
kgdb: fix NMI hangs
kgdb: fix kgdboc dynamic module configuration
kgdb: document parameters
x86: kgdb support
consoles: polling support, kgdboc
kgdb: core
uaccess: add probe_kernel_write() -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86: (613 commits)
x86: standalone trampoline code
x86: move suspend wakeup code to C
x86: coding style fixes to arch/x86/kernel/acpi/sleep.c
x86: setup_trampoline() - fix section mismatch warning
x86: section mismatch fixes, #1
x86: fix paranoia about using BIOS quickboot mechanism.
x86: print out buggy mptable
x86: use cpu_online()
x86: use cpumask_of_cpu()
x86: remove unnecessary tmp local variable
x86: remove unnecessary memset()
x86: use ioapic_read_entry() and ioapic_write_entry()
x86: avoid redundant loop in io_apic_level_ack_pending()
x86: remove superfluous initialisation in boot code.
x86: merge mpparse_{32,64}.c
x86: unify mp_register_gsi
x86: unify mp_config_acpi_legacy_irqs
x86: unify mp_register_ioapic
x86: unify uniq_io_apic_id
x86: unify smp_scan_config
... -
simplified and streamlined kgdb support on x86, both 32-bit and 64-bit,
based on patch from:Subject: kgdb: core-lite
From: Jason Wessel[ and countless other authors - see the patch for details. ]
Signed-off-by: Ingo Molnar
Signed-off-by: Jason Wessel
Signed-off-by: Jan Kiszka
Reviewed-by: Thomas Gleixner
17 Apr, 2008
11 commits
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Move wakeup code to .c, so that video mode setting code can be shared
between boot and wakeup. Remove nasty assembly code in 64-bit case by
re-using trampoline code. Stack setup was fixed to clear high 16bits
of %esp, maybe that fixes some machines..c code sharing and morse code was done H. Peter Anvin, Sam Ravnborg
reviewed kbuild related stuff, and it seems okay to him. Rafael did
some cleanups.[rjw:
* Made the patch stop breaking compilation on x86-32
* Added arch/x86/kernel/acpi/sleep.h
* Got rid of compiler warnings in arch/x86/kernel/acpi/sleep.c
* Fixed 32-bit compilation on x86-64 systems
* Added include/asm-x86/trampoline.h and fixed the non-SMP
compilation on 64-bit x86
* Removed arch/x86/kernel/acpi/sleep_32.c which was not used
* Fixed some breakage caused by the integration of smpboot.c done
under us in the meantime]Signed-off-by: Pavel Machek
Signed-off-by: H. Peter Anvin
Reviewed-by: Sam Ravnborg
Signed-off-by: Rafael J. Wysocki
Signed-off-by: Ingo Molnar -
without this patch:
VOYAGER:
kernel/built-in.o: In function `crash_kexec':
(.text+0x28588): undefined reference to `machine_crash_shutdown'VISWS:
kernel/built-in.o: In function `crash_kexec':
/next-20080401/kernel/kexec.c:1074: undefined reference to `machine_crash_shutdown'
make[1]: *** [.tmp_vmlinux1] Error 1because arch/x86/kernel/reboot.c isn't built since CONFIG_X86_BIOS_REBOOT=n,
so machine_crash_shutdown() isn't available.This patch does seem a small bit odd since the KEXEC help text says that
kexec is independent of the system firmware.Signed-off-by: Randy Dunlap
Cc: Eric Biederman
Cc: Stephen Rothwell
Signed-off-by: Andrew Morton
Signed-off-by: Ingo Molnar -
Signed-off-by: Yinghai Lu
Signed-off-by: Ingo Molnar -
Allow the maximum number of nodes in an x86_64 system to
be configurable. This patch does NOT change the default value
but allows the value to be a config option.Signed-off-by: Jack Steiner
Signed-off-by: Ingo Molnar -
Fix double help section in PAT Kconfig. Thanks to Randy Dunlap for catching
this bug.Signed-off-by: Venkatesh Pallipadi
Signed-off-by: Ingo Molnar -
Sets up pat_init() infrastructure.
PAT MSR has following setting.
PAT
|PCD
||PWT
|||
000 WB _PAGE_CACHE_WB
001 WC _PAGE_CACHE_WC
010 UC- _PAGE_CACHE_UC_MINUS
011 UC _PAGE_CACHE_UCWe are effectively changing WT from boot time setting to WC.
UC_MINUS is used to provide backward compatibility to existing /dev/mem
users(X).reserve_memtype and free_memtype are new interfaces for maintaining alias-free
mapping. It is currently implemented in a simple way with a linked list and
not optimized. reserve and free tracks the effective memory type, as a result
of PAT and MTRR setting rather than what is actually requested in PAT.pat_init piggy backs on mtrr_init as the rules for setting both pat and mtrr
are same.Signed-off-by: Venkatesh Pallipadi
Signed-off-by: Suresh Siddha
Signed-off-by: Ingo Molnar -
We use the same routing as x86_64, moved now to setup.c.
Just with a few ifdefs inside.
Note that this routing uses prefill_possible_map().
It has the very nice side effect of allowing hotplugging of
cpus that are marked as present but disabled by acpi bios.Signed-off-by: Glauber Costa
Signed-off-by: Ingo Molnar -
The proper dependency check uncovered a few dependency problems,
the subarchitecture used a mixture of selects and depends on SMP
and PCI dependency was messed up.Signed-off-by: Roman Zippel
Signed-off-by: Ingo Molnar -
X86_HT is used for hyperthreading or multicore on 32-bit.
The X86_HT on 64-bit is different from 32-bit, it means hyperthreading only.
And X86_HT is not used on 64-bit except from cpu/initel_cacheinfo.c.Unify X86_HT for hyperthreading or multicore.
Turn X86_HT on when X86_64 and SMP are enabled.Signed-off-by: Hiroshi Shimamoto
Signed-off-by: Ingo Molnar -
Signed-off-by: Glauber Costa
Signed-off-by: Ravikiran Thirumalai
Acked-by: Shai Fultheim
Signed-off-by: Ingo Molnar
Signed-off-by: Thomas Gleixner -
Semaphores are no longer performance-critical, so a generic C
implementation is better for maintainability, debuggability and
extensibility. Thanks to Peter Zijlstra for fixing the lockdep
warning. Thanks to Harvey Harrison for pointing out that the
unlikely() was unnecessary.Signed-off-by: Matthew Wilcox
Acked-by: Ingo Molnar
13 Mar, 2008
1 commit
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Move 00-INDEX entries to power/00-INDEX (and add entry for
pm_qos_interface.txt).Update references to moved filenames.
Fix some trailing whitespace.
Signed-off-by: Randy Dunlap
Signed-off-by: Len Brown
12 Mar, 2008
1 commit
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quicklists cause a serious memory leak on 32-bit x86,
as documented at:http://bugzilla.kernel.org/show_bug.cgi?id=9991
the reason is that the quicklist pool is a special-purpose
cache that grows out of proportion. It is not accounted for
anywhere and users have no way to even realize that it's
the quicklists that are causing RAM usage spikes. It was
supposed to be a relatively small pool, but as demonstrated
by KOSAKI Motohiro, they can grow as large as:Quicklists: 1194304 kB
given how much trouble this code has caused historically,
and given that Andrew objected to its introduction on x86
(years ago), the best option at this point is to remove them.[ any performance benefits of caching constructed pgds should
be implemented in a more generic way (possibly within the page
allocator), while still allowing constructed pages to be
allocated by other workloads. ]Signed-off-by: Thomas Gleixner
Signed-off-by: Ingo Molnar
05 Mar, 2008
1 commit
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Add CONFIG_HAVE_KRETPROBES to the arch//Kconfig file for relevant
architectures with kprobes support. This facilitates easy handling of
in-kernel modules (like samples/kprobes/kretprobe_example.c) that depend on
kretprobes being present in the kernel.Thanks to Sam Ravnborg for helping make the patch more lean.
Per Mathieu's suggestion, added CONFIG_KRETPROBES and fixed up dependencies.
Signed-off-by: Ananth N Mavinakayanahalli
Acked-by: Mathieu Desnoyers
Acked-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
04 Mar, 2008
1 commit
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Most classic Pentiums don't have hardware virtualization extension,
and building kvm with Voyager, Visual Workstation, or NUMAQ
generates spurious failures.Signed-off-by: Avi Kivity
Signed-off-by: Randy Dunlap
23 Feb, 2008
1 commit
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It's always been broken, but recent fixes actually made it do something,
and now the brokenness shows up as the resulting kernel simply not
working at all.So it used to be that you could enable this config option, and it just
didn't do anything. Now we'd better stop people from enabling it by
mistake, since it _does_ do something, but does it so badly as to be
unusable.Code to actually make it work is pending, but incomplete and won't be
merged into 2.6.25 in any case.Acked-by: Arjan van de Ven
Acked-by: Sam Ravnborg
Cc: James Morris
Cc: Ingo Molnar
Signed-off-by: Linus Torvalds
15 Feb, 2008
1 commit
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The KVM configuration is no longer visible in the latest git tree. It looks
like it is selected by HAVE_SETUP_PER_CPU_AREA. I've moved HAVE_KVM to
under CONFIG_X86.Signed-off-by: Balbir Singh
Acked-by: Avi Kivity
Signed-off-by: Ingo Molnar
