aboutsummaryrefslogtreecommitdiff
path: root/arch
AgeCommit message (Collapse)Author
2010-01-23Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
2010-01-21Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf: x86: Add support for the ANY bit perf: Change the is_software_event() definition perf: Honour event state for aux stream data perf: Fix perf_event_do_pending() fallback callsite perf kmem: Print usage help for unknown commands perf kmem: Increase "Hit" column length hw-breakpoints, perf: Fix broken mmiotrace due to dr6 by reference change perf timechart: Use tid not pid for COMM change
2010-01-21Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (23 commits) ACPI: delete acpi_processor_power_verify_c2() ACPI: allow C3 > 1000usec ACPI: enable C2 and Turbo-mode on Nehalem notebooks on A/C ACPI: power_meter: remove double kfree() ACPI: processor: restrict early _PDC to opt-in platforms ACPI: Fix unused variable warning in sbs.c acpi: make ACPI device id constant sony-laptop - fix using of uninitialized variable ACPI: Fix section mismatch error for acpi_early_processor_set_pdc() eeepc-laptop: disable wireless hotplug for 1201N eeepc-laptop: add hotplug_disable parameter eeepc-laptop: switch to using sparse keymap library eeepc-laptop: dmi blacklist to disable pci hotplug code eeepc-laptop: disable cpu speed control on EeePC 701 ACPI: don't cond_resched if irq is disabled ACPI: Remove unnecessary cast. ACPI: Advertise to BIOS in _OSC: _OST on _PPC changes ACPI: EC: Add wait for irq storm ACPI: SBS: Move SBS HC callback to faster Notify queue x86, ACPI: delete acpi_boot_table_init() return value ...
2010-01-21Merge branch 'sh/for-2.6.33' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 * 'sh/for-2.6.33' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: sh64: wire up sys_accept4. sh: unwire sys_recvmmsg. sh: ms7724: Correct sh-eth EEPROM polling timeout.
2010-01-21Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* master.kernel.org:/home/rmk/linux-2.6-arm: ARM: 5888/1: arm: Update comments in cacheflush.h and remove unnecessary V6 and V7 comments ARM: 5886/1: arm: Fix cpu_proc_fin() for proc-v7.S and make kexec work ARM: 5885/1: arm: Flush TLB entries in setup_mm_for_reboot() ARM: 5884/1: arm: Fix DCC console for v7 ARM: 5883/1: Revert "disable NX support for OABI-supporting kernels" ARM: 5882/1: ARM: Fix uncompress code compile for different defines of flush(void) ARM: fix badly placed mach/plat entries in Kconfig & Makefile
2010-01-21perf: x86: Add support for the ANY bitStephane Eranian
Propagate the ANY bit into the fixed counter config for v3 and higher. Signed-off-by: Stephane Eranian <eranian@google.com> [a.p.zijlstra@chello.nl: split from larger patch] Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <4b5430c6.0f975e0a.1bf9.ffff85fe@mx.google.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-21mpc8569mds: Add bscr setting for rtbi modeLiu Yu-B13201
Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-21dts/mpc8569mds: Cleanup tbi phy to support rtbiLiu Yu-B13201
After these change, when need to work in rtbi mode, just change phy-connection-type to "rtbi". Also, this work can be done by u-boot. Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-20Merge branch 'misc' into releaseLen Brown
2010-01-19ARM: 5888/1: arm: Update comments in cacheflush.h and remove unnecessary V6 ↵Tony Lindgren
and V7 comments The comments in cacheflush.h should follow what's in struct cpu_cache_fns. The comments for V6 and V7 are unnecessary. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-01-19ARM: 5886/1: arm: Fix cpu_proc_fin() for proc-v7.S and make kexec workTony Lindgren
The comments in arm_machine_restart() suggest that cpu_proc_fin() will clean and disable cache and turn off interrupts. This does not seem to be implemented for proc-v7.S, implement it the same way as for proc-v6.S. This also makes kexec work for v7. Note that a related TLB and branch traget flush patch is also needed to avoid kexec "crc error". Note that there are still some issues that seem to be related to L2 cache being on and causing occasional uncompress "crc error" with kexec. Anyways, this gets kexec mostly working on V7 for now. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-01-19ARM: 5885/1: arm: Flush TLB entries in setup_mm_for_reboot()Tony Lindgren
We need to do that if we tinker with the MMU entries. This fixes the occasional bug with kexec where the new fails to uncompress with "crc error". Most likely at least kexec on v6 and v7 need this fix. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-01-19ARM: 5884/1: arm: Fix DCC console for v7Tony Lindgren
Without this patch arch/arm/compressed/head.S defaults to generic DCC code that does not work for v7. For more information on the v7 DCC, see Cortex-A8 TRM "12.11.1 Debug communications channel". To use it with post 2.6.33-rc1 or later, you need to have: CONFIG_DEBUG_LL=y ONFIG_DEBUG_ICEDCC=y CONFIG_EARLY_PRINTK=y Earlier kernels need commit 93fd03a8c6728b58879f8af20ffd55d9c32a778b backported. Tested on omap3430. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-01-19sh64: wire up sys_accept4.Paul Mundt
sh64 on the other hand provides both direct broken out syscalls as well as socketcall access. As there are binaries that use both socketcall has to stay around. The current ABI prefers direct syscalls. It was pointed out that when sys_recvmmsg was added in, sys_accept4 was overlooked. This takes care of wiring it up. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-19sh: unwire sys_recvmmsg.Paul Mundt
sh32 at the moment only uses sys_socketcall to reach these, so unwire recvmmsg for now. While we're at it, add it to the ignore list, as per the s390 change. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-18x86, apic: use logical flat for systems with <= 8 logical cpusSuresh Siddha
We can use logical flat mode if there are <= 8 logical cpu's (irrespective of physical apic id values). This will enable simplified and efficient IPI and device interrupt routing on such platforms. This has been tested to work on both Intel and AMD platforms. Exceptions like IBM summit platform which can't use logical flat mode are addressed by using OEM platform checks. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Chris McDermott <lcm@linux.vnet.ibm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-01-18x86, apic: use physical mode for IBM summit platformsSuresh Siddha
Chris McDermott from IBM confirmed that hurricane chipset in IBM summit platforms doesn't support logical flat mode. Irrespective of the other things like apic_id's, total number of logical cpu's, Linux kernel should default to physical mode for this system. The 32-bit kernel does so using the OEM checks for the IBM summit platform. Add a similar OEM platform check for the 64bit kernel too. Otherwise the linux kernel boot can hang on this platform under certain bios/platform settings. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Tested-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Chris McDermott <lcm@linux.vnet.ibm.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-01-18Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds
* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: pci_controller->arch_data really is a struct device_node * microblaze: Add missing double apostrophe in Kconfig microblaze: Add PT_ macros for special purpose regs microblaze: Enable accept4 syscall microblaze: Wire up recvmmsg syscall
2010-01-18Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc: Move cpu hotplug driver lock from pseries to powerpc powerpc: Move /proc/ppc64 to /proc/powerpc update powerpc/8xx: Fix user space TLB walk in dcbX fixup powerpc: Fix decrementer setup on 1GHz boards powerpc/iseries: Initialise on-stack completion powerpc/hvc: Driver build breaks with !HVC_CONSOLE serial/pmac_zilog: Workaround problem due to interrupt on closed port powerpc/macintosh: Make Open Firmware device id constant powerpc: Use helpers for rlimits powerpc: cpumask_of_node() should handle -1 as a node powerpc/pseries: Fix dlpar compile warning without CONFIG_PROC_DEVICETREE powerpc/pseries: Fix xics interrupt affinity powerpc/swsusp_32: Fix TLB invalidation powerpc/8xx: Always pin kernel instruction TLB powerpc: 2.6.33 update of defconfigs for embedded 6xx/7xxx, 8xx, 8xxx powerpc: Use scripts/mkuboot.sh instead of 'mkimage' powerpc/5200: update defconfigs
2010-01-18microblaze: pci_controller->arch_data really is a struct device_node *Michal Simek
we are follow powerpc change: 44ef339073f67d4abcc62ae52a5fbc069d7a4d29 Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-01-18microblaze: Add missing double apostrophe in KconfigMichal Simek
Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-01-18microblaze: Add PT_ macros for special purpose regsMichal Simek
PT_ macros are used by gdb and strace uses them too. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-01-18microblaze: Enable accept4 syscallMichal Simek
We had wrong name in unistd.h + I wire up this syscall in syscall table. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-01-18microblaze: Wire up recvmmsg syscallMichal Simek
Patch a2e2725541fad72416326798c2d7fa4dafb7d337 should contain change in unistd.h too. The same problem had MIPS. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-01-18ARM: 5883/1: Revert "disable NX support for OABI-supporting kernels"Rabin Vincent
This reverts commit 14f0aa359365e8a93a77b71e3b840274b9b4dcb1. That commit was needed earlier because system call restarting for OABI (compat) required an executable stack and thus had problems with NX. Since ab72b00734ae4d0b ("ARM: Fix signal restart issues with NX and OABI compat") has reworked the code to not require an executable stack anymore, we can re-enable NX support for kernels with OABI (compat) support. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-01-18ARM: 5882/1: ARM: Fix uncompress code compile for different defines of ↵Tony Lindgren
flush(void) Because of the include of the decompress_inflate.c file from boot/compress/misc.c, there are different flush() defines: In file included from arch/arm/boot/compressed/misc.c:249: arch/arm/boot/compressed/../../../../lib/decompress_inflate.c:138:29: error: macro "flush" passed 2 arguments, but takes just 0 Fix this by removing the define of flush() in misc.c for CONFIG_DEBUG_ICEDCC as it's already defined in mach/uncompress.h, and that is being included unconditionally. Also use a static inline function instead of define for mach-mxc and mach-gemini to avoid similar bug for those platforms. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-01-18sh: ms7724: Correct sh-eth EEPROM polling timeout.Kuninori Morimoto
This converts the cpu_relax() to a udelay(1), which fixes up issues with the EEPROM polling occasionally timing out. Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-17Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: do_add_mount() should sanitize mnt_flags CIFS shouldn't make mountpoints shrinkable mnt_flags fixes in do_remount() attach_recursive_mnt() needs to hold vfsmount_lock over set_mnt_shared() may_umount() needs namespace_sem Fix configfs leak Fix the -ESTALE handling in do_filp_open() ecryptfs: Fix refcnt leak on ecryptfs_follow_link() error path Fix ACC_MODE() for real Unrot uml mconsole a bit hppfs: handle ->put_link() Kill 9p readlink() fix autofs/afs/etc. magic mountpoint breakage
2010-01-17ARM: fix badly placed mach/plat entries in Kconfig & MakefileRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-01-17hw-breakpoints, perf: Fix broken mmiotrace due to dr6 by reference changeLuca Barbieri
Commit 62edab9056a6cf0c9207339c8892c923a5217e45 (from June 2009 but merged in 2.6.33) changes notify_die to pass dr6 by reference. However, it forgets to fix the check for DR_STEP in kmmio.c, breaking mmiotrace. It also passes a wrong value to the post handler. This simple fix makes mmiotrace work again. Signed-off-by: Luca Barbieri <luca@luca-barbieri.com> Acked-by: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <1263634770-14578-1-git-send-email-luca@luca-barbieri.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-16Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, uv: Ensure hub revision set for all ACPI modes. x86, uv: Add function retrieving node controller revision number x86: xen: 64-bit kernel RPL should be 0 x86: kernel_thread() -- initialize SS to a known state x86/agp: Fix agp_amd64_init and agp_amd64_cleanup x86: SGI UV: Fix mapping of MMIO registers x86: mce.h: Fix warning in header checks
2010-01-16Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf tools: Check if /dev/null can be used as the -o gcc argument perf tools: Move QUIET_STDERR def to before first use perf: Stop stack frame walking off kernel addresses boundaries
2010-01-16m68knommu: fix invalid flags on coldfire pit clocksourcejohn stultz
The m68knommu coldfire pit clocksource looks like it was incorrectly marked as a continuous clocksource. Running with it marked as a continuous clocksource could cause hangs when the system switches to highres mode or enables nohz. This patch removes the CLOCK_SOURCE_IS_CONTINUOUS flag on the coldfire pit clocksource. This will disallow systems using this clocksource from entering oneshot mode (disabling highres timers and nohz). Signed-off-by: John Stultz <johnstul@us.ibm.com> Acked-by: Greg Ungerer <gerg@snapgear.com> Cc: Steven King <sfking@fdwdc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-01-15Merge branch 'for-linus/samsung' of git://git.fluff.org/bjdooks/linuxLinus Torvalds
* 'for-linus/samsung' of git://git.fluff.org/bjdooks/linux: ARM: MINI2440: Fixup __initdata usage ARM: MINI2440: Fix crash on boot due to improper __initdata qualifier ARM: SMDK6410: Specify no GPIO for B_PWR_5V regulator ARM: S3C: NAND: Check the existence of nr_map before copying
2010-01-15Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: sentelic - fix left/right horizontal scroll mapping Input: pmouse - move Sentelic probe down the list Input: add compat support for sysfs and /proc capabilities output Input: i8042 - add Dritek quirk for Acer Aspire 5610. Input: xbox - do not use GFP_KERNEL under spinlock Input: psmouse - fix Synaptics detection when protocol is disabled Input: bcm5974 - report ABS_MT events Input: davinci_keyscan - add device_enable method to platform data Input: evdev - be less aggressive about sending SIGIO notifies Input: atkbd - fix canceling event_work in disconnect Input: serio - fix potential deadlock when unbinding drivers Input: gf2k - fix &&/|| confusion in gf2k_connect()
2010-01-15Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha-2.6: alpha: cpumask_of_node() should handle -1 as a node alpha: add myself as a maintainer, and drop mention of 2.4
2010-01-15x86, uv: Ensure hub revision set for all ACPI modes.Russ Anderson
Ensure that UV hub revision is set for all ACPI modes. Signed-off-by: Russ Anderson <rja@sgi.com> LKML-Reference: <20100115180908.GB7757@sgi.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2010-01-15x86, uv: Add function retrieving node controller revision numberJack Steiner
Add function for determining the revision id of the SGI UV node controller chip (HUB). This function is needed in a subsequent patch. Signed-off-by: Jack Steiner <steiner@sgi.com> LKML-Reference: <20100112210904.GA24546@sgi.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2010-01-15vhost_net: a kernel-level virtio serverMichael S. Tsirkin
What it is: vhost net is a character device that can be used to reduce the number of system calls involved in virtio networking. Existing virtio net code is used in the guest without modification. There's similarity with vringfd, with some differences and reduced scope - uses eventfd for signalling - structures can be moved around in memory at any time (good for migration, bug work-arounds in userspace) - write logging is supported (good for migration) - support memory table and not just an offset (needed for kvm) common virtio related code has been put in a separate file vhost.c and can be made into a separate module if/when more backends appear. I used Rusty's lguest.c as the source for developing this part : this supplied me with witty comments I wouldn't be able to write myself. What it is not: vhost net is not a bus, and not a generic new system call. No assumptions are made on how guest performs hypercalls. Userspace hypervisors are supported as well as kvm. How it works: Basically, we connect virtio frontend (configured by userspace) to a backend. The backend could be a network device, or a tap device. Backend is also configured by userspace, including vlan/mac etc. Status: This works for me, and I haven't see any crashes. Compared to userspace, people reported improved latency (as I save up to 4 system calls per packet), as well as better bandwidth and CPU utilization. Features that I plan to look at in the future: - mergeable buffers - zero copy - scalability tuning: figure out the best threading model to use Note on RCU usage (this is also documented in vhost.h, near private_pointer which is the value protected by this variant of RCU): what is happening is that the rcu_dereference() is being used in a workqueue item. The role of rcu_read_lock() is taken on by the start of execution of the workqueue item, of rcu_read_unlock() by the end of execution of the workqueue item, and of synchronize_rcu() by flush_workqueue()/flush_work(). In the future we might need to apply some gcc attribute or sparse annotation to the function passed to INIT_WORK(). Paul's ack below is for this RCU usage. (Includes fixes by Alan Cox <alan@linux.intel.com>, David L Stevens <dlstevens@us.ibm.com>, Chris Wright <chrisw@redhat.com>) Acked-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-15ARM: MINI2440: Fixup __initdata usageBen Dooks
Remove some of the __initdata tags which are currently inappropriate for platform_device and some of the platform data. These can be returned once support for copying platform devices and data is added. Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-01-15ARM: MINI2440: Fix crash on boot due to improper __initdata qualifierUri Yosef
This patch fix mini2440 crash on boot due to improper __initdata qualifier on mini2440_led1_pdata. Signed-off-by: Uri Yosef <uri.yosef@gmail.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-01-15Merge commit 'gcl/merge' into mergeBenjamin Herrenschmidt
2010-01-15Merge commit 'kumar/merge' into mergeBenjamin Herrenschmidt
2010-01-15powerpc: Move cpu hotplug driver lock from pseries to powerpcNathan Fontenot
Move the defintion and lock helper routines for the cpu hotplug driver lock from pseries to powerpc code to avoid build breaks for platforms other than pseries that use cpu hotplug. Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com> Acked-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-01-15powerpc: Move /proc/ppc64 to /proc/powerpc updateNathan Fontenot
It looks like the previous patch sent out to move RTAS and other items from /proc/ppc64 to /proc/powerpc missed a few files needed for RAS and DLPAR functionality. Original Patch here: http://lists.ozlabs.org/pipermail/linuxppc-dev/2009-September/076096.html This patch updates the remaining files to be created under /proc/powerpc. Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-01-15powerpc/8xx: Fix user space TLB walk in dcbX fixupJoakim Tjernlund
The newly added fixup for buggy dcbX insn's has a bug that always trigger a kernel TLB walk so a user space dcbX insn will cause a Kernel Machine Check if it hits DTLB error. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-01-15powerpc: Fix decrementer setup on 1GHz boardsStefan Roese
We noticed that recent kernels didn't boot on our 1GHz Canyonlands 460EX boards anymore. As it seems, patch 8d165db1 [powerpc: Improve decrementer accuracy] introduced this problem. The routine div_sc() overflows with shift = 32 resulting in this incorrect setup: time_init: decrementer frequency = 1000.000012 MHz time_init: processor frequency = 1000.000012 MHz clocksource: timebase mult[400000] shift[22] registered clockevent: decrementer mult[33] shift[32] cpu[0] This patch now introduces a local div_dc64() version of this function so that this overflow doesn't happen anymore. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Detlev Zundel <dzu@denx.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-01-15powerpc/iseries: Initialise on-stack completionMichael Ellerman
get_viotape_info() declares a vio_waitevent on the stack, which contains a completion, but never initialises the completion. I have no idea how this ever worked, and on recent kernels it causes an oops in handle_tape_event() when we access the non-initialised completion. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-01-15powerpc: Use helpers for rlimitsJiri Slaby
Make sure compiler won't do weird things with limits. E.g. fetching them twice may return 2 different values after writable limits are implemented. I.e. either use rlimit helpers added in 3e10e716abf3c71bdb5d86b8f507f9e72236c9cd or ACCESS_ONCE if not applicable. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: linuxppc-dev@ozlabs.org Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-01-15powerpc: cpumask_of_node() should handle -1 as a nodeAnton Blanchard
pcibus_to_node can return -1 if we cannot determine which node a pci bus is on. If passed -1, cpumask_of_node will negatively index the lookup array and pull in random data: # cat /sys/devices/pci0000:00/0000:00:01.0/local_cpus 00000000,00000003,00000000,00000000 # cat /sys/devices/pci0000:00/0000:00:01.0/local_cpulist 64-65 Change cpumask_of_node to check for -1 and return cpu_all_mask in this case: # cat /sys/devices/pci0000:00/0000:00:01.0/local_cpus ffffffff,ffffffff,ffffffff,ffffffff # cat /sys/devices/pci0000:00/0000:00:01.0/local_cpulist 0-127 Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-04 01:39:20 +0000