Enable a few modules required to boot on a POWER multipath
box.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Run savedefconfig over the ppc64, ppc64e and pseries config
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Convert CONFIG_HOTPLUG_PCI from tristate to bool. This only affects
the hotplug core; several of the hotplug drivers can still be modules.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
Since now we have pstore support for nvram in pseries, enable it
in the default config. With this config option enabled, pstore
infra-structure will be used to read/write the messages from/to nvram.
Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com>
Acked-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
We need devtmpfs enabled to boot on recent versions of Fedora. EFI
partitions will be useful for large block devices. tmpfs ACL support
is used by some distros for managing access to devices.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Set CONFIG_NLS_DEFAULT to utf8. The distros do this (eg ppc64 FC17
and RHEL6) as well as the x86 defconfigs. Userspace these days is
most likely to expect utf8 anyway.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
No changes, just update the configs with savedefconfig.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Anticipating growth in coming years, we should ensure we are getting a
good lead on testing.
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Pull powerpc updates from Benjamin Herrenschmidt:
"Some highlights in addition to the usual batch of fixes:
- 64TB address space support for 64-bit processes by Aneesh Kumar
- Gavin Shan did a major cleanup & re-organization of our EEH support
code (IBM fancy PCI error handling & recovery infrastructure) which
paves the way for supporting different platform backends, along
with some rework of the PCIe code for the PowerNV platform in order
to remove home made resource allocations and instead use the
generic code (which is possible after some small improvements to it
done by Gavin).
- Uprobes support by Ananth N Mavinakayanahalli
- A pile of embedded updates from Freescale folks, including new SoC
and board supports, more KVM stuff including preparing for 64-bit
BookE KVM support, ePAPR 1.1 updates, etc..."
Fixup trivial conflicts in drivers/scsi/ipr.c
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (146 commits)
powerpc/iommu: Fix multiple issues with IOMMU pools code
powerpc: Fix VMX fix for memcpy case
driver/mtd:IFC NAND:Initialise internal SRAM before any write
powerpc/fsl-pci: use 'Header Type' to identify PCIE mode
powerpc/eeh: Don't release eeh_mutex in eeh_phb_pe_get
powerpc: Remove tlb batching hack for nighthawk
powerpc: Set paca->data_offset = 0 for boot cpu
powerpc/perf: Sample only if SIAR-Valid bit is set in P7+
powerpc/fsl-pci: fix warning when CONFIG_SWIOTLB is disabled
powerpc/mpc85xx: Update interrupt handling for IFC controller
powerpc/85xx: Enable USB support in p1023rds_defconfig
powerpc/smp: Do not disable IPI interrupts during suspend
powerpc/eeh: Fix crash on converting OF node to edev
powerpc/eeh: Lock module while handling EEH event
powerpc/kprobe: Don't emulate store when kprobe stwu r1
powerpc/kprobe: Complete kprobe and migrate exception frame
powerpc/kprobe: Introduce a new thread flag
powerpc: Remove unused __get_user64() and __put_user64()
powerpc/eeh: Global mutex to protect PE tree
powerpc/eeh: Remove EEH PE for normal PCI hotplug
...
On POWER6 and POWER7 if the input operand to an instruction is a
denormalised single precision binary floating point value we can take
a denormalisation exception where it's expected that the hypervisor
(HV=1) will fix up the inputs before the instruction is run.
This adds code to handle this denormalisation exception for POWER6 and
POWER7.
It also add a CONFIG_PPC_DENORMALISATION option and sets it in
pseries/ppc64_defconfig.
This is useful on bare metal systems only. Based on patch from Milton
Miller.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This patch creates a new submenu for the NX cryptographic
hardware accelerator and breaks the NX options into their own
Kconfig file under drivers/crypto/nx/Kconfig.
This will permit additional NX functionality to be easily
and more cleanly added in the future without touching
drivers/crypto/Makefile|Kconfig.
Signed-off-by: Seth Jennings <sjenning@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Enable the hardware RNG and crypto modules. I verified they both
autoload via the VIO subsystem, so there is no need to build them in.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
When looking through some instruction traces I noticed our tracepoint
checks were inline. It turns out we don't have CONFIG_JUMP_LABEL
enabled.
By enabling CONFIG_JUMP_LABEL we replace a load/compare/branch with
a nop at every tracepoint call. For example in do_IRQ:
CONFIG_JUMP_LABEL disabled:
stdx 3,11,9
lwz 0,8(29)
cmpwi 7,0,0
bne- 7,.L124
bl .irq_enter
CONFIG_JUMP_LABEL enabled:
stdx 3,11,9
nop
bl .irq_enter
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Most distros use it so we may as well enable it and get regular compile
testing.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Add HV mode KVM to Book3 server 64bit defconfigs as a module.
Doesn't add much to the size:
text data bss dec hex filename
8244109 4686767 994000 13924876 d47a0c vmlinux.vanilla
8256092 4691607 994128 13941827 d4bc43 vmlinux.kvm
This should enable more testing of this configuration.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
As a result of changes to Kconfig files, we no longer enable
the lockup and hung task detectors. Both are very light weight
and provide useful information in the event of a hang, so
reenable them.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Add mpt2sas driver to pseries and ppc64 defconfig.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Remove duplicate assignment of SCSI_BNX2_ISCSI in pseries_defconfig
introduced by:
37e0c21e powerpc/pseries: Enable iSCSI support for a number of cards
causes warning:
arch/powerpc/configs/pseries_defconfig:151:warning: override: reassigning to symbol SCSI_BNX2_ISCSI
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
The ns_cgroup is an annoying cgroup at the namespace / cgroup frontier and
leads to some problems:
* cgroup creation is out-of-control
* cgroup name can conflict when pids are looping
* it is not possible to have a single process handling a lot of
namespaces without falling in a exponential creation time
* we may want to create a namespace without creating a cgroup
The ns_cgroup was replaced by a compatibility flag 'clone_children',
where a newly created cgroup will copy the parent cgroup values.
The userspace has to manually create a cgroup and add a task to
the 'tasks' file.
This patch removes the ns_cgroup as suggested in the following thread:
https://lists.linux-foundation.org/pipermail/containers/2009-June/018616.html
The 'cgroup_clone' function is removed because it is no longer used.
This is a userspace-visible change. Commit 45531757b4 ("cgroup: notify
ns_cgroup deprecated") (merged into 2.6.27) caused the kernel to emit a
printk warning users that the feature is planned for removal. Since that
time we have heard from XXX users who were affected by this.
Signed-off-by: Daniel Lezcano <daniel.lezcano@free.fr>
Signed-off-by: Serge E. Hallyn <serge.hallyn@canonical.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Jamal Hadi Salim <hadi@cyberus.ca>
Reviewed-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Paul Menage <menage@google.com>
Acked-by: Matt Helsley <matthltc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Enable iSCSI support for a number of cards. We had the base
networking devices enabled but forgot to enable iSCSI.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Enable the Qlogic and Emulex 10Gbit adapters.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Ensure the Chelsio T3/T4 network drivers and iWARP drivers are
enabled in the pseries config.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Upcoming servers will include a Broadcom NIC, add to the defconfig to
increase testing coverage and make sure mainline builds come up with
networking.
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
- Enable 64kB pages so it gets some regular testing.
- The largest POWER7 has 1024 threads so bump NR_CPUS it to match.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
IRQSOFF_TRACER and STACK_TRACER force the kernel to be built with -pg
which is a substantial overhead.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
On 5 May 2010 21:33, "Anton Blanchard" <anton@samba.org> wrote:
CONFIG_SYSFS_DEPRECATED can cause issues with newer distros and should not
be required for any distro in the last 3 or 4 years, so disable it.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
The e1000e device is becoming more common these days, so let's just
build it in for pseries & ppc64_defconfig.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
The pseries and ppc64 defconfigs have drifted apart over the years. Reduce
some of the differences while still keeping the idea that the ppc64 defconfig
is cross platform but enables fewer features than pseries, eg NR_CPUS is
lower.
Also enable a number of common adapters as modules.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Now we have high res timers there is less of a reason for a high HZ value.
Furthermore I think there a few reasons we should reduce HZ to 100:
- Timer interrupt overhead. While this overhead is small, there are
applications that are very sensitive to jitter (eg some HPC apps).
- Issues with the timer wheel code. When coming out of NO_HZ idle we work our
way through the timer code one tick at a time. If we have been idle a long
time, this adds up - I sometimes see milliseconds of time spent in that
loop.
Long term we should fix the timer wheel algorithm, but for now if we reduce
HZ then we reduce the amount of work the timer code has to do when coming
out of idle.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Token what? Lets save some space in our powerpc kernels and remove token
ring support.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Machines with acenic adapters are rare these days, so we may as well make it
a module. Cramfs is also very rarely used so we can make it a module.
Together this saves 143kB on a 64bit compile:
text data bss dec hex filename
8247176 1729404 1221988 11198568 aae068 vmlinux~
8134997 1727588 1188836 11051421 a8a19d vmlinux
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
The overhead of HCALL_STATS is quite high and the functionality is very
rarely used. Key statistics are also missing (eg min/max).
With the new hcall tracepoints much more powerful tracing can be done in
a kernel module. Lets disable this by default.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Enable relay in pseries config, ppc64_defconfig had it enabled but pseries
did not.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Now that all EEPROM drivers live in the same place, let's harmonize
their symbol names.
Also fix eeprom's dependencies, it definitely needs sysfs, and is no
longer experimental after many years in the kernel tree.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Turned off CONFIG_PCI_LEGACY and turned on EXT4, and otherwise mostly
took the defaults. This also updates ppc6xx_defconfig, which covers
the 6xx/7xx/7xxx-based embedded boards.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Adds a character driver for BSR support on IBM POWER systems including
Power5 and Power6. The BSR is an optional processor facility not currently
implemented by any other processors. It's primary purpose is fast large SMP
synchronization. More details on the BSR are in comments to the code which
follows. This patch adds BSR driver to pseries_defconfig.
Signed-off-by: Sonny Rao <sonnyrao@linux.vnet.ibm.com>
Signed-off-by: Joel Schopp <jschopp@austin.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This will remove some build warnings and doesn't stop us building any
drivers that we were building previously with these configs.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This updates all the defconfigs in arch/powerpc/configs except iseries
and ps3, which were updated by the preceding commits.
This mostly takes the defaults, except that I turned on tickless idle
and high-resolution timers for everything, and turned off instrumentation
support and "Fair group CPU scheduler" for the smaller/embedded platforms.
Signed-off-by: Paul Mackerras <paulus@samba.org>
In pre-cgroup cpusets, a few config files enabled cpusets by default.
Signed-off-by: Paul Jackson <pj@sgi.com>
Cc: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Enable NO_HZ and high res timers for the ppc64 and pseries defconfigs.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
When checking out the new NO_HZ support in powerpc, I noticed we never
slept for more than 2 seconds. It turns out SLAB has a 2 second per cpu
timer that causes this.
After switching to SLUB I see some nice 4 second sleeps which is the
limit on this POWER6 box (the decrementer ticks at 512MHz):
slept 4.19 sec
slept 4.19 sec
slept 4.19 sec
slept 4.19 sec
slept 3.96 sec
slept 3.80 sec
slept 2.99 sec
Since SLUB is now the default and some powerpc defconfigs already enable
it, lets enable SLUB across the board for consistency. While doing this
I also noticed that the maple defconfig has SLAB debugging enabled which
is sure to make your box nice and slow. Fix that too.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Anton Blanchard