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2009-05-03x86: uv - prevent NULL dereference in uv_system_init()Cyrill Gorcunov
We may reach NULL dereference oops if kmalloc failed. Prevent it with explicit BUG_ON. [ Impact: more controlled assert in 'impossible' scenario ] Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Acked-by: Jack Steiner <steiner@sgi.com> LKML-Reference: <20090501202511.GE4633@lenovo> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-05-03x86: uv io-apic - use BUILD_BUG_ON instead of BUG_ONCyrill Gorcunov
The expression is known to be true/false at compilation time so we're allowed to use build-time instead of run-time check. Also align 'entry' items assignment. [ Impact: shrink kernel a bit, cleanup ] Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Jack Steiner <steiner@sgi.com> LKML-Reference: <20090502093956.GB4791@lenovo> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-05-01x86, apic: use pr_ macroCyrill Gorcunov
Replace recenly appeared printk with pr_ macro (the file already use a lot of them). [ Impact: cleanup ] Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> LKML-Reference: <20090501195425.GB4633@lenovo> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-27x86: Use dmi check in apic_is_clustered() on 64-bit to mark the TSC unstableYinghai Lu
We will have systems with 2 and more sockets 8cores/2thread, but we treat them as multi chassis - while they could have a stable TSC domain. Use DMI check instead. [ Impact: do not turn possibly stable TSCs off incorrectly ] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Ravikiran Thirumalai <kiran@scalex86.org> LKML-Reference: <49F5532A.5000802@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-27x86: apic: Remove duplicated macrosYinghai Lu
XAPIC_DEST_* is dupliicated to the one in apicdef.h [ Impact: cleanup ] Signed-off-by: Yinghai Lu <yinghai@kernel.org> LKML-Reference: <49F552D0.5050505@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-22x86: x2apic, IR: remove reinit_intr_remapped_IO_APIC()Suresh Siddha
When interrupt-remapping is enabled, we are relying on setup_IO_APIC_irqs() to configure remapped entries in the IO-APIC, which comes little bit later after enabling interrupt-remapping. Meanwhile, restoration of old io-apic entries after enabling interrupt-remapping will not make the interrupts through io-apic functional anyway. So remove the unnecessary reinit_intr_remapped_IO_APIC() step. The longer story: When interrupt-remapping is enabled, IO-APIC entries need to be setup in the re-mappable format (pointing to interrupt-remapping table entries setup by the OS). This remapping configuration is happening in the same place where we traditionally configure IO-APIC (i.e., in setup_IO_APIC_irqs()). So when we enable interrupt-remapping successfully, there is no need to restore old io-apic RTE entries before we actually do a complete configuration shortly in setup_IO_APIC_irqs(). Old IO-APIC RTE's may be in traditional format (non re-mappable) or in re-mappable format pointing to interrupt-remapping table entries setup by BIOS. Restoring both of these will not make IO-APIC functional. We have to rely on setup_IO_APIC_irqs() for proper configuration by OS. So I am removing this unnecessary and broken step. [ Impact: remove unnecessary/broken IO-APIC setup step ] Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Acked-by: Weidong Han <weidong.han@intel.com> Cc: dwmw2@infradead.org LKML-Reference: <20090420200450.552359000@linux-os.sc.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-21x86: x2apic, IR: Make config X86_UV dependent on X86_X2APICSuresh Siddha
Instead of selecting X86_X2APIC, make config X86_UV dependent on X86_X2APIC. This will eliminate enabling CONFIG_X86_X2APIC with out enabling CONFIG_INTR_REMAP. [ Impact: cleanup ] Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Acked-by: Jack Steiner <steiner@sgi.com> Cc: dwmw2@infradead.org Cc: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Weidong Han <weidong.han@intel.com> LKML-Reference: <20090420200450.694598000@linux-os.sc.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-21x86: x2apic, IR: Clean up panic() with nox2apic boot optionSuresh Siddha
Instead of panic() ignore the "nox2apic" boot option when BIOS has already enabled x2apic prior to OS handover. [ Impact: printk warning instead of panic() when BIOS has enabled x2apic already ] Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: dwmw2@infradead.org Cc: Weidong Han <weidong.han@intel.com> LKML-Reference: <20090420200450.425091000@linux-os.sc.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-21x86: x2apic, IR: Move eoi_ioapic_irq() into a CONFIG_INTR_REMAP sectionSuresh Siddha
Address the following complier warning: arch/x86/kernel/apic/io_apic.c:2543: warning: `eoi_ioapic_irq' defined but not used By moving that function (and eoi_ioapic_irq()) into an existing #ifdef CONFIG_INTR_REMAP section of the code. [ Impact: cleanup ] Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: dwmw2@infradead.org Cc: Weidong Han <weidong.han@intel.com> LKML-Reference: <20090420200450.271099000@linux-os.sc.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Weidong Han <weidong.han@intel.com>
2009-04-21x86: x2apic, IR: Clean up X86_X2APIC and INTR_REMAP config checksSuresh Siddha
Add x2apic_supported() to clean up CONFIG_X86_X2APIC checks. Fix CONFIG_INTR_REMAP checks. [ Impact: cleanup ] Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: dwmw2@infradead.org Cc: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Weidong Han <weidong.han@intel.com> LKML-Reference: <20090420200450.128993000@linux-os.sc.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-19x86: es7000, uv - use __cpuinit for kicking secondary cpusCyrill Gorcunov
The caller already has __cpuinit attribute. [ Impact: save memory, address section mismatch warning ] Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Pavel Emelyanov <xemul@openvz.org> LKML-Reference: <20090419074311.GA8670@lenovo> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-19x86: smpboot - wakeup_secondary should be done via __cpuinit sectionCyrill Gorcunov
A caller (do_boot_cpu) already has __cpuinit attribute. Since HOTPLUG_CPU depends on SMP && HOTPLUG it doesn't lead to panic at moment. [ Impact: cleanup ] Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> LKML-Reference: <20090418194528.GD25510@lenovo> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-19x86, intr-remap: fix x2apic/intr-remap resumeWeidong Han
Interrupt remapping was decoupled from x2apic. Shouldn't check x2apic before resume interrupt remapping. Otherwise, interrupt remapping won't be resumed when x2apic is not enabled. [ Impact: fix potential intr-remap resume hang on !x2apic ] Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Weidong Han <weidong.han@intel.com> Acked-by: David Woodhouse <David.Woodhouse@intel.com> Cc: iommu@lists.linux-foundation.org Cc: allen.m.kay@intel.com Cc: fenghua.yu@intel.com LKML-Reference: <1239957736-6161-6-git-send-email-weidong.han@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-19x86, intr-remap: add option to disable interrupt remappingWeidong Han
Add option "nointremap" to disable interrupt remapping. [ Impact: add new boot option ] Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Weidong Han <weidong.han@intel.com> Acked-by: David Woodhouse <David.Woodhouse@intel.com> Cc: iommu@lists.linux-foundation.org Cc: allen.m.kay@intel.com Cc: fenghua.yu@intel.com LKML-Reference: <1239957736-6161-5-git-send-email-weidong.han@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-19x86, intr-remap: enable interrupt remapping earlyWeidong Han
Currently, when x2apic is not enabled, interrupt remapping will be enabled in init_dmars(), where it is too late to remap ioapic interrupts, that is, ioapic interrupts are really in compatibility mode, not remappable mode. This patch always enables interrupt remapping before ioapic setup, it guarantees all interrupts will be remapped when interrupt remapping is enabled. Thus it doesn't need to set the compatibility interrupt bit. [ Impact: refactor intr-remap init sequence, enable fuller remap mode ] Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Weidong Han <weidong.han@intel.com> Acked-by: David Woodhouse <David.Woodhouse@intel.com> Cc: iommu@lists.linux-foundation.org Cc: allen.m.kay@intel.com Cc: fenghua.yu@intel.com LKML-Reference: <1239957736-6161-4-git-send-email-weidong.han@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-19x86, intr-remap: fix ack for interrupt remappingWeidong Han
Shouldn't call ack_apic_edge() in ir_ack_apic_edge(), because ack_apic_edge() does more than just ack: it also does irq migration in the non-interrupt-remapping case. But there is no such need for interrupt-remapping case, as irq migration is done in the process context. Similarly, ir_ack_apic_level() shouldn't call ack_apic_level, and instead should do the local cpu's EOI + directed EOI to the io-apic. ack_x2APIC_irq() is not neccessary, because ack_APIC_irq() will use MSR write for x2apic, and uncached write for non-x2apic. [ Impact: simplify/standardize intr-remap IRQ acking, fix on !x2apic ] Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Weidong Han <weidong.han@intel.com> Acked-by: David Woodhouse <David.Woodhouse@intel.com> Cc: iommu@lists.linux-foundation.org Cc: allen.m.kay@intel.com Cc: fenghua.yu@intel.com LKML-Reference: <1239957736-6161-3-git-send-email-weidong.han@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-19docs, x86: add nox2apic back to kernel-parameters.txtWeidong Han
"nox2apic" was removed from kernel-parameters.txt by mistake, when entries were sorted in alpha order (commit 0cb55ad2). But this early parameter is still there, add it back to kernel-parameters.txt. [ Impact: add boot parameter description ] Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Weidong Han <weidong.han@intel.com> Acked-by: David Woodhouse <David.Woodhouse@intel.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: iommu@lists.linux-foundation.org Cc: allen.m.kay@intel.com Cc: fenghua.yu@intel.com LKML-Reference: <1239957736-6161-2-git-send-email-weidong.han@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-17Merge branch 'linus' into x86/apicIngo Molnar
Merge reason: new intr-remap patches depend on the s2ram iommu fixes from upstream Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-16Merge branch 'tracing-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: tracing: Fix branch tracer header tracing: Fix power tracer header
2009-04-16Merge branch 'sched-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched: Avoid printing sched_group::__cpu_power for default case tracing, sched: mark get_parent_ip() notrace
2009-04-16Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: kernel/softirq.c: fix sparse warning rcu: Make hierarchical RCU less IPI-happy
2009-04-17kernel/softirq.c: fix sparse warningH Hartley Sweeten
Fix sparse warning in kernel/softirq.c. warning: do-while statement is not a compound statement Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> LKML-Reference: <BD79186B4FD85F4B8E60E381CAEE1909015F9033@mi8nycmail19.Mi8.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-16Merge branch 'x86/uv' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86/uv' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: UV BAU distribution and payload MMRs x86: UV: BAU partition-relative distribution map x86, uv: add Kconfig dependency on NUMA for UV systems x86: prevent /sys/firmware/sgi_uv from being created on non-uv systems x86, UV: Fix for nodes with memory and no cpus x86, UV: system table in bios accessed after unmap x86: UV BAU messaging timeouts x86: UV BAU and nodes with no memory
2009-04-17sched: Avoid printing sched_group::__cpu_power for default caseGautham R Shenoy
Commit 46e0bb9c12f4 ("sched: Print sched_group::__cpu_power in sched_domain_debug") produces a messy dmesg output while attempting to print the sched_group::__cpu_power for each group in the sched_domain hierarchy. Fix this by avoid printing the __cpu_power for default cases. (i.e, __cpu_power == SCHED_LOAD_SCALE). [ Impact: reduce syslog clutter ] Reported-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Gautham R Shenoy <ego@in.ibm.com> Fixed-by: Tony Luck <tony.luck@intel.com> Cc: a.p.zijlstra@chello.nl LKML-Reference: <20090414033936.GA534@in.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-16Merge branch 'upstream-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: ata: Report 16/32bit PIO as best we can libata: use ATA_ID_CFA_* pata_legacy: fix no device fail path pata_hpt37x: fix HPT370 DMA timeouts libata: handle SEMB signature better
2009-04-16mm: pass correct mm when growing stackHugh Dickins
Tetsuo Handa reports seeing the WARN_ON(current->mm == NULL) in security_vm_enough_memory(), when do_execve() is touching the target mm's stack, to set up its args and environment. Yes, a UMH_NO_WAIT or UMH_WAIT_PROC call_usermodehelper() spawns an mm-less kernel thread to do the exec. And in any case, that vm_enough_memory check when growing stack ought to be done on the target mm, not on the execer's mm (though apart from the warning, it only makes a slight tweak to OVERCOMMIT_NEVER behaviour). Reported-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> Signed-off-by: Hugh Dickins <hugh@veritas.com> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-16Revert "kobject: don't block for each kobject_uevent".Hugh Dickins
This reverts commit f520360d93cdc37de5d972dac4bf3bdef6a7f6a7. Tetsuo Handa, running a kernel with CONFIG_DEBUG_PAGEALLOC=y and CONFIG_UEVENT_HELPER_PATH=/sbin/hotplug, has been hitting RCU detected CPU stalls: it's been spinning in the loop where do_execve() counts up the args (but why wasn't fixup_exception working? dunno). The recent change, switching kobject_uevent_env() from UMH_WAIT_EXEC to UMH_NO_WAIT, is broken: the exec uses args on the local stack here, and an env which is kfreed as soon as call_usermodehelper() returns. It very much needs to wait for the exec to be done. An alternative would be to keep the UMH_NO_WAIT, and complicate the code to allocate and free these resources correctly? but no, as GregKH pointed out when making the commit, CONFIG_UEVENT_HELPER_PATH="" is a much better optimization - though some distros are still saying /sbin/hotplug in their .config, yet with no such binary in their initrd or their root. Reported-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> Signed-off-by: Hugh Dickins <hugh@veritas.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Arjan van de Ven <arjan@linux.intel.com> Acked-by: Will Newton <will.newton@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-16ata: Report 16/32bit PIO as best we canAlan Cox
The legacy old IDE ioctl API for this is a bit primitive so we try and map stuff sensibly onto it. - Set PIO over DMA devices to report 32bit - Add ability to change the PIO32 settings if the controller permits it - Add that functionality into the sff drivers - Add that functionality into the VLB legacy driver - Turn on the 32bit PIO on the ninja32 and add support there Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-04-16libata: use ATA_ID_CFA_*Sergei Shtylyov
Use ATA_ID_CFA_* constants for CFA specific identify data words 162 and 163. Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-04-16pata_legacy: fix no device fail pathTejun Heo
When pata_legacy can't detect any device, it unregisters the platform_device and fails detection. However, it forgets to detach ata host triggering weird failures as the host later gets freed by devres while still attached. Fix it. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-04-16pata_hpt37x: fix HPT370 DMA timeoutsSergei Shtylyov
The libata driver has copied the code from the IDE driver which caused a post 2.4.18 regression on many HPT370[A] chips -- DMA stopped to work completely, only causing timeouts. Now remove hpt370_bmdma_start() for good... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-04-16libata: handle SEMB signature betterTejun Heo
WDC WD1600JS-62MHB5 successfully hits the window between ATA/ATAPI-7 and Serial ATA II standards and reports 3c/c3 signature which now is assigned to SEMB. Make ata_dev_classify() report ATA_DEV_SEMB on the sig and let ata_dev_read_id() work around it by trying IDENTIFY once. This fixes bko#11579. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: David Haun <drhaun88@gmail.com> Reported-by: Lars Wirzenius <liw@liw.fi> Reported-by: Juan Manuel <jmcarranza@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-04-16x86: UV BAU distribution and payload MMRsCliff Wickman
This patch correctly sets BAU memory mapped registers to point to the sending activation descriptor table and target payload table. The "Broadcast Assist Unit" is used for TLB shootdown in UV. The memory mapped registers that point to sending and receiving memory structures contain node numbers. In one case the __pa() function did not provide the node id of memory on blade zero in configurations where that id is nonzero. In another case, it was assumed that memory was allocated on the local node. That assumption is not true in a configuration in which the node has no memory. Tested on the UV hardware simulator. [ Impact: fix possible runtime crash due to incorrect TLB logic ] Signed-off-by: Cliff Wickman <cpw@sgi.com> LKML-Reference: <E1LuR5Z-0007An-B8@eag09.americas.sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-16Add block_write_full_page_endio for passing endio handlerChris Mason
block_write_full_page doesn't allow the caller to control what happens when the IO is over. This adds a new call named block_write_full_page_endio so the buffer head end_io handler can be provided by the caller. This will be used by the ext3 data=guarded mode to do i_size updates in a workqueue based end_io handler. end_buffer_async_write is also exported so it can be called to do the dirty work of managing page writeback for the higher level end_io handler. Signed-off-by: Chris Mason <chris.mason@oracle.com> Acked-by: Theodore Tso <tytso@mit.edu> Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-16Export filemap_write_and_wait_rangeChris Mason
This wasn't exported before and is useful (used by the experimental ext3 data=guarded code) Signed-off-by: Chris Mason <chris.mason@oracle.com> Acked-by: Theodore Tso <tytso@mit.edu> Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-16Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (64 commits) phylib: Fix delay argument of schedule_delayed_work NET/ixgbe: Fix powering off during shutdown NET/e1000e: Fix powering off during shutdown NET/e1000: Fix powering off during shutdown packet: avoid warnings when high-order page allocation fails gianfar: stop send queue before resetting gianfar myr10ge: again fix lro_gen_skb() alignment declance: convert to net_device_ops bfin_mac: convert to net_device_ops au1000: convert to net_device_ops atarilance: convert to net_device_ops a2065: convert to net_device_ops ixgbe: update real_num_tx_queues on changing num_rx_queues ixgbe: fix tx queue index Revert "rose: zero length frame filtering in af_rose.c" sfc: Use correct macro to set event bitfield sfc: Match calls to netif_napi_add() and netif_napi_del() bonding: Remove debug printk e1000/e1000: fix compile warning ehea: Fix incomplete conversion to net_device_ops ...
2009-04-16Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc: remove some pointless conditionals before kfree() sbus: changed ioctls to unlocked sparc: asm/atomic.h on 32bit should include asm/system.h for xchg sparc64: Fix smp_callin() locking.
2009-04-16phylib: Fix delay argument of schedule_delayed_workAtsushi Nemoto
The commit a390d1f3 ("phylib: convert state_queue work to delayed_work") missed converting 'expires' value to 'delay' value. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Acked-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-16NET/ixgbe: Fix powering off during shutdownRafael J. Wysocki
Prevent ixgbe from putting the adapter into D3 during shutdown except when we're going to power off the system, since doing that may generally cause problems with kexec to happen (such problems were observed for igb and forcedeth). For this purpose seperate ixgbe_shutdown() from ixgbe_suspend() and use the appropriate PCI PM callbacks in both of them. Signed-off-by: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-16NET/e1000e: Fix powering off during shutdownRafael J. Wysocki
Prevent e1000e from putting the adapter into D3 during shutdown except when we're going to power off the system, since doing that may generally cause problems with kexec to happen (such problems were observed for igb and forcedeth). For this purpose seperate e1000e_shutdown() from e1000e_suspend() and use the appropriate PCI PM callbacks in both of them. Signed-off-by: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-16NET/e1000: Fix powering off during shutdownRafael J. Wysocki
Prevent e1000 from putting the adapter into D3 during shutdown except when we're going to power off the system, since doing that may generally cause problems with kexec to happen (such problems were observed for igb and forcedeth). For this purpose seperate e1000_shutdown() from e1000_suspend() and use the appropriate PCI PM callbacks in both of them. Signed-off-by: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-15RCU: Don't try and predeclare inline funcs as it upsets some versions of gccDavid Howells
Don't try and predeclare inline funcs like this: static inline void wait_migrated_callbacks(void) ... static void _rcu_barrier(enum rcu_barrier type) { ... wait_migrated_callbacks(); } ... static inline void wait_migrated_callbacks(void) { wait_event(rcu_migrate_wq, !atomic_read(&rcu_migrate_type_count)); } as it upsets some versions of gcc under some circumstances: kernel/rcupdate.c: In function `_rcu_barrier': kernel/rcupdate.c:125: sorry, unimplemented: inlining failed in call to 'wait_migrated_callbacks': function body not available kernel/rcupdate.c:152: sorry, unimplemented: called from here This can be dealt with by simply putting the static variables (rcu_migrate_*) at the top, and moving the implementation of the function up so that it replaces its forward declaration. Signed-off-by: David Howells <dhowells@redhat.com> Cc: Dipankar Sarma <dipankar@in.ibm.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-15The default CONFIG_BUG=n version of BUG() should have an empty do...whileDavid Howells
The default CONFIG_BUG=n version of BUG() should incorporate an empty a do...while statement to avoid compilation weirdness. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-15MN10300: Stop gcc from generating uninitialised variable warnings after BUG()David Howells
Stop gcc from generating uninitialised variable warnings after BUG(). The problem is that MN10300's implementation of BUG() invokes system call 15 which doesn't return - but there's no way to tell the compiler that and also emit the bug table element with the correct file and line data. So instead, we make the do...while wrapper in _debug_bug_trap() an endless loop from which there's no escape. Also, while we're at it, (1) get rid of _debug_bug_trap() and just implement directly as BUG(), and (2) make the implementation of BUG() contingent on CONFIG_BUG=y. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-15MN10300: Wire up missing system callsDavid Howells
Wire up missing system calls preadv() and pwritev(). Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-15MN10300: Discard duplicate PFN_xxx() macrosDavid Howells
Discard duplicate PFN_xxx() macros from arch code as they're now in the general headers. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-15Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6Linus Torvalds
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: [S390] boot cputime accounting [S390] add read_persistent_clock [S390] cpu hotplug and accounting values [S390] fix idle time accounting [S390] smp: fix cpu_possible_map initialization [S390] dasd: fix idaw boundary checking for track based ccw [S390] dasd: Use the new async framework for autoonlining. [S390] qdio: remove dead timeout handler [S390] appldata: Use new mod_virt_timer_periodic() function. [S390] extend virtual timer interface by mod_virt_timer_periodic [S390] stp synchronization retry timer [S390] call nmi_enter/nmi_exit on machine checks [S390] wire up preadv/pwritev system calls [S390] s390: move machine flags to lowcore
2009-04-15x86: use used_vectors in init_IRQ()Yinghai Lu
Impact: fix crash with many devices I found this crash: [ 552.616646] general protection fault: 0403 [#1] SMP [ 552.620013] last sysfs file: /sys/devices/pci0000:00/0000:00:02.0/usb1/1-1/1-1:1.0/host13/target13:0:0/13:0:0:0/block/sr0/size [ 552.620013] CPU 0 [ 552.620013] Modules linked in: [ 552.620013] Pid: 0, comm: swapper Not tainted 2.6.30-rc1-tip-01931-g8fcafd8-dirty #28 Sun Fire X4440 [ 552.620013] RIP: 0010:[<ffffffff8023bada>] [<ffffffff8023bada>] default_idle+0x7d/0xda [ 552.620013] RSP: 0018:ffffffff81345e68 EFLAGS: 00010246 [ 552.620013] RAX: 0000000000000000 RBX: ffffffff8133d870 RCX: ffffc20000000000 [ 552.620013] RDX: 00000000001d0620 RSI: ffffffff8023bad8 RDI: ffffffff802a3169 [ 552.620013] RBP: ffffffff81345e98 R08: 0000000000000000 R09: ffffffff812244a0 [ 552.620013] R10: ffffffff81345dc8 R11: 7ebe1b6fa0bcac50 R12: 4ec4ec4ec4ec4ec5 [ 552.620013] R13: ffffffff813a54d0 R14: ffffffff813a7a40 R15: 0000000000000000 [ 552.620013] FS: 00000000006d1880(0000) GS:ffffc20000000000(0000) knlGS:0000000000000000 [ 552.620013] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b [ 552.620013] CR2: 00007fec9d936a50 CR3: 000000007d1a9000 CR4: 00000000000006e0 [ 552.620013] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 552.620013] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 552.620013] Process swapper (pid: 0, threadinfo ffffffff81344000,task ffffffff812244a0) [ 552.620013] Stack: [ 552.620013] 0000000000000000 ffffc20000000000 00000000001d0620 7ebe1b6fa0bcac50 [ 552.620013] ffffffff8133d870 4ec4ec4ec4ec4ec5 ffffffff81345ec8 ffffffff8023bd84 [ 552.620013] 4ec4ec4ec4ec4ec5 ffffffff813a54d0 7ebe1b6fa0bcac50 ffffffff8133d870 [ 552.620013] Call Trace: [ 552.620013] [<ffffffff8023bd84>] c1e_idle+0x109/0x124 [ 552.620013] [<ffffffff8023314b>] cpu_idle+0xb8/0x101 [ 552.620013] [<ffffffff80c16d6a>] rest_init+0x7e/0x94 [ 552.620013] [<ffffffff81357efc>] start_kernel+0x3dc/0x3fd [ 552.620013] [<ffffffff813572a9>] x86_64_start_reservations+0xb9/0xd4 [ 552.620013] [<ffffffff813573b2>] x86_64_start_kernel+0xee/0x109 [ 552.620013] Code: 48 8b 04 25 f8 b4 00 00 83 a0 3c e0 ff ff fb 0f ae f0 65 48 8b 04 25 f8 b4 00 00 f6 80 38 e0 ff ff 08 75 09 e8 71 76 06 00 fb f4 <eb> 06 e8 68 76 06 00 fb 65 48 8b 04 25 f8 b4 00 00 83 88 3c e0 [ 552.620013] RIP [<ffffffff8023bada>] default_idle+0x7d/0xda [ 552.620013] RSP <ffffffff81345e68> [ 552.828646] ---[ end trace 4cbfc5c01382af7f ]--- Joerg Roedel said "The 0403 error code means that there was an external interrupt with vector 0x80. Yinghai, my theory is that the kernel on this machine has no 32bit emulation compiled in, right? In this case the selector points to a zero entry which may cause the #gpf right after the hlt. But I have no idea where the external int 0x80 comes from" it turns out that we could use 0x80 for external device on 64-bit when 32-bit emulation is disabled. But we forgot to set the gate for it. try to set gate for it by checking used_vectors. Also move apic_intr_init() early to avoid setting that gate two times. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Joerg Roedel <joerg.roedel@amd.com> LKML-Reference: <49E62DFD.6010904@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-15Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ALSA: hda - Fix the cmd cache keys for amp verbs ALSA: add missing definitions(letters) to HD-Audio.txt ALSA: hda - Add quirk mask for Fujitsu Amilo laptops with ALC883 [ALSA] intel8x0: add one retry to the ac97_clock measurement routine [ALSA] intel8x0: fix wrong conditions in ac97_clock measure routine ALSA: hda - Avoid call of snd_jack_report at release ALSA: add private_data to struct snd_jack ALSA: snd-usb-caiaq: rename files to remove redundant information in file pathes ALSA: snd-usb-caiaq: clean up header includes ALSA: sound/pci: use memdup_user() ALSA: sound/usb: use memdup_user() ALSA: sound/isa: use memdup_user() ALSA: sound/core: use memdup_user() [ALSA] intel8x0: do not use zero value from PICB register [ALSA] intel8x0: an attempt to make ac97_clock measurement more reliable [ALSA] pcm-midlevel: Add more strict buffer position checks based on jiffies [ALSA] hda_intel: fix unexpected ring buffer positions ASoC: Disable S3C64xx support in Kconfig ASoC: magician: remove un-necessary #include of pxa-regs.h and hardware.h
2009-04-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixesLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes: GFS2: Use DEFINE_SPINLOCK GFS2: cleanup file_operations mess GFS2: Move umount flush rwsem GFS2: Fix symlink creation race GFS2: Make quotad's waiting interruptible
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