linux.git/drivers/xen, branch v2.6.31 Linux kernel source tree xen: Use kcalloc() in xen_init_IRQ() 2009-07-01T09:19:47+00:00 Pekka Enberg penberg@cs.helsinki.fi 2009-07-01T08:51:18+00:00 a70c352a37671fe1ebcbd317b439aa4760f4ccb7 The init_IRQ() function is now called with slab allocator initialized. Therefore, we must not use the bootmem allocator in xen_init_IRQ(). Fixes the following boot-time warning: ------------[ cut here ]------------ WARNING: at mm/bootmem.c:535 alloc_arch_preferred_bootmem+0x27/0x45() Modules linked in: Pid: 0, comm: swapper Not tainted 2.6.30 #1 Call Trace: [<ffffffff8102d6e3>] ? warn_slowpath_common+0x73/0xb0 [<ffffffff810210d9>] ? pvclock_clocksource_read+0x49/0x90 [<ffffffff812e522f>] ? alloc_arch_preferred_bootmem+0x27/0x45 [<ffffffff812e5761>] ? ___alloc_bootmem_nopanic+0x39/0xc9 [<ffffffff812e57fa>] ? ___alloc_bootmem+0x9/0x2f [<ffffffff812e9e21>] ? xen_init_IRQ+0x25/0x61 [<ffffffff812d69ee>] ? start_kernel+0x1b5/0x29e ---[ end trace 4eaa2a86a8e2da22 ]--- Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Tested-by: Christian Kujau <lists@nerdbynature.de> Reported-by: Christian Kujau <lists@nerdbynature.de> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: lists@nerdbynature.de Cc: jeremy.fitzhardinge@citrix.com LKML-Reference: <1246438278.22417.28.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu> 
The init_IRQ() function is now called with slab allocator initialized.
Therefore, we must not use the bootmem allocator in xen_init_IRQ().

Fixes the following boot-time warning:

  ------------[ cut here ]------------
  WARNING: at mm/bootmem.c:535 alloc_arch_preferred_bootmem+0x27/0x45()
  Modules linked in:
  Pid: 0, comm: swapper Not tainted 2.6.30 #1
  Call Trace:
   [<ffffffff8102d6e3>] ? warn_slowpath_common+0x73/0xb0
   [<ffffffff810210d9>] ? pvclock_clocksource_read+0x49/0x90
   [<ffffffff812e522f>] ? alloc_arch_preferred_bootmem+0x27/0x45
   [<ffffffff812e5761>] ? ___alloc_bootmem_nopanic+0x39/0xc9
   [<ffffffff812e57fa>] ? ___alloc_bootmem+0x9/0x2f
   [<ffffffff812e9e21>] ? xen_init_IRQ+0x25/0x61
   [<ffffffff812d69ee>] ? start_kernel+0x1b5/0x29e
  ---[ end trace 4eaa2a86a8e2da22 ]---

Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Tested-by: Christian Kujau <lists@nerdbynature.de>
Reported-by: Christian Kujau <lists@nerdbynature.de>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: lists@nerdbynature.de
Cc: jeremy.fitzhardinge@citrix.com
LKML-Reference: <1246438278.22417.28.camel@penberg-laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
PM core: rename suspend and resume functions 2009-06-12T19:32:31+00:00 Alan Stern stern@rowland.harvard.edu 2009-05-24T20:05:42+00:00 d161630297a20802d01c55847bfcba85d2118a9f This patch (as1241) renames a bunch of functions in the PM core. Rather than go through a boring list of name changes, suffice it to say that in the end we have a bunch of pairs of functions: device_resume_noirq dpm_resume_noirq device_resume dpm_resume device_complete dpm_complete device_suspend_noirq dpm_suspend_noirq device_suspend dpm_suspend device_prepare dpm_prepare in which device_X does the X operation on a single device and dpm_X invokes device_X for all devices in the dpm_list. In addition, the old dpm_power_up and device_resume_noirq have been combined into a single function (dpm_resume_noirq). Lastly, dpm_suspend_start and dpm_resume_end are the renamed versions of the former top-level device_suspend and device_resume routines. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> 
This patch (as1241) renames a bunch of functions in the PM core.
Rather than go through a boring list of name changes, suffice it to
say that in the end we have a bunch of pairs of functions:

	device_resume_noirq	dpm_resume_noirq
	device_resume		dpm_resume
	device_complete		dpm_complete
	device_suspend_noirq	dpm_suspend_noirq
	device_suspend		dpm_suspend
	device_prepare		dpm_prepare

in which device_X does the X operation on a single device and dpm_X
invokes device_X for all devices in the dpm_list.

In addition, the old dpm_power_up and device_resume_noirq have been
combined into a single function (dpm_resume_noirq).

Lastly, dpm_suspend_start and dpm_resume_end are the renamed versions
of the former top-level device_suspend and device_resume routines.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
PM: Rename device_power_down/up() 2009-06-12T19:32:31+00:00 Magnus Damm damm@igel.co.jp 2009-05-14T22:53:26+00:00 e39a71ef80877f4e30d808af9acceec80f4d2f7c Rename the functions performing "_noirq" dev_pm_ops operations from device_power_down() and device_power_up() to device_suspend_noirq() and device_resume_noirq(). The new function names are chosen to show that the functions are responsible for calling the _noirq() versions to finalize the suspend/resume operation. The current function names do not perform power down/up anymore so the names may be misleading. Global function renames: - device_power_down() -> device_suspend_noirq() - device_power_up() -> device_resume_noirq() Static function renames: - suspend_device_noirq() -> __device_suspend_noirq() - resume_device_noirq() -> __device_resume_noirq() Signed-off-by: Magnus Damm <damm@igel.co.jp> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Len Brown <lenb@kernel.org> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> 
Rename the functions performing "_noirq" dev_pm_ops
operations from device_power_down() and device_power_up()
to device_suspend_noirq() and device_resume_noirq().

The new function names are chosen to show that the functions
are responsible for calling the _noirq() versions to finalize
the suspend/resume operation. The current function names do
not perform power down/up anymore so the names may be misleading.

Global function renames:
- device_power_down() -> device_suspend_noirq()
- device_power_up() -> device_resume_noirq()

Static function renames:
- suspend_device_noirq() -> __device_suspend_noirq()
- resume_device_noirq() -> __device_resume_noirq()

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Len Brown <lenb@kernel.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Merge branch 'x86-xen-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-06-10T23:16:27+00:00 Linus Torvalds torvalds@linux-foundation.org 2009-06-10T23:16:27+00:00 be15f9d63b97da0065187696962331de6cd9de9e * 'x86-xen-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (42 commits) xen: cache cr0 value to avoid trap'n'emulate for read_cr0 xen/x86-64: clean up warnings about IST-using traps xen/x86-64: fix breakpoints and hardware watchpoints xen: reserve Xen start_info rather than e820 reserving xen: add FIX_TEXT_POKE to fixmap lguest: update lazy mmu changes to match lguest's use of kvm hypercalls xen: honour VCPU availability on boot xen: add "capabilities" file xen: drop kexec bits from /sys/hypervisor since kexec isn't implemented yet xen/sys/hypervisor: change writable_pt to features xen: add /sys/hypervisor support xen/xenbus: export xenbus_dev_changed xen: use device model for suspending xenbus devices xen: remove suspend_cancel hook xen/dev-evtchn: clean up locking in evtchn xen: export ioctl headers to userspace xen: add /dev/xen/evtchn driver xen: add irq_from_evtchn xen: clean up gate trap/interrupt constants xen: set _PAGE_NX in __supported_pte_mask before pagetable construction ... 
* 'x86-xen-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (42 commits)
  xen: cache cr0 value to avoid trap'n'emulate for read_cr0
  xen/x86-64: clean up warnings about IST-using traps
  xen/x86-64: fix breakpoints and hardware watchpoints
  xen: reserve Xen start_info rather than e820 reserving
  xen: add FIX_TEXT_POKE to fixmap
  lguest: update lazy mmu changes to match lguest's use of kvm hypercalls
  xen: honour VCPU availability on boot
  xen: add "capabilities" file
  xen: drop kexec bits from /sys/hypervisor since kexec isn't implemented yet
  xen/sys/hypervisor: change writable_pt to features
  xen: add /sys/hypervisor support
  xen/xenbus: export xenbus_dev_changed
  xen: use device model for suspending xenbus devices
  xen: remove suspend_cancel hook
  xen/dev-evtchn: clean up locking in evtchn
  xen: export ioctl headers to userspace
  xen: add /dev/xen/evtchn driver
  xen: add irq_from_evtchn
  xen: clean up gate trap/interrupt constants
  xen: set _PAGE_NX in __supported_pte_mask before pagetable construction
  ...
Merge branch 'x86/apic' into irq/numa 2009-05-12T10:17:36+00:00 Ingo Molnar mingo@elte.hu 2009-05-12T10:17:30+00:00 6cda3eb62ef42aa5acd649bf99c8db544e0f4051 Merge reason: both topics modify the APIC code but were able to do it in parallel so far. An upcoming patch generates a conflict so merge them to avoid the conflict. Signed-off-by: Ingo Molnar <mingo@elte.hu> 
Merge reason: both topics modify the APIC code but were able to do it in
              parallel so far. An upcoming patch generates a conflict so
              merge them to avoid the conflict.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Merge branch 'x86/urgent' into x86/xen 2009-05-08T08:50:00+00:00 Ingo Molnar mingo@elte.hu 2009-05-08T08:50:00+00:00 f066a155334642b8a206eec625b1925d88c48aeb Conflicts: arch/frv/include/asm/pgtable.h arch/x86/include/asm/required-features.h arch/x86/xen/mmu.c Merge reason: x86/xen was on a .29 base still, move it to a fresher branch and pick up Xen fixes as well, plus resolve conflicts Signed-off-by: Ingo Molnar <mingo@elte.hu> 
Conflicts:
	arch/frv/include/asm/pgtable.h
	arch/x86/include/asm/required-features.h
	arch/x86/xen/mmu.c

Merge reason: x86/xen was on a .29 base still, move it to a fresher
              branch and pick up Xen fixes as well, plus resolve
              conflicts

Signed-off-by: Ingo Molnar <mingo@elte.hu>
[IA64] xen_domu_defconfig: fix build issues/warnings 2009-05-05T18:43:13+00:00 Jan Beulich jbeulich@novell.com 2009-05-05T12:57:52+00:00 0692698cb7369ea1ce74f3f87f70baf5072f8a37 - drivers/xen/events.c did not compile - xen_setup_hook caused a modpost section warning - the use of u64 (instead of unsigned long long) together with a %llu in drivers/xen/balloon.c caused a compiler warning Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Tony Luck <tony.luck@intel.com> 
- drivers/xen/events.c did not compile
- xen_setup_hook caused a modpost section warning
- the use of u64 (instead of unsigned long long) together with a %llu
  in drivers/xen/balloon.c caused a compiler warning

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
x86/irq: change irq_desc_alloc() to take node instead of cpu 2009-04-28T10:21:17+00:00 Yinghai Lu yinghai@kernel.org 2009-04-28T01:00:38+00:00 85ac16d033370caf6f48d743c8dc8103700f5cc5 This simplifies the node awareness of the code. All our allocators only deal with a NUMA node ID locality not with CPU ids anyway - so there's no need to maintain (and transform) a CPU id all across the IRq layer. v2: keep move_irq_desc related [ Impact: cleanup, prepare IRQ code to be NUMA-aware ] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Jeremy Fitzhardinge <jeremy@goop.org> LKML-Reference: <49F65536.2020300@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> 
This simplifies the node awareness of the code. All our allocators
only deal with a NUMA node ID locality not with CPU ids anyway - so
there's no need to maintain (and transform) a CPU id all across the
IRq layer.

v2: keep move_irq_desc related

[ Impact: cleanup, prepare IRQ code to be NUMA-aware ]

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
LKML-Reference: <49F65536.2020300@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
irq: change ->set_affinity() to return status 2009-04-28T10:21:16+00:00 Yinghai Lu yinghai@kernel.org 2009-04-28T00:59:21+00:00 d5dedd4507d307eb3f35f21b6e16f336fdc0d82a according to Ingo, change set_affinity() in irq_chip should return int, because that way we can handle failure cases in a much cleaner way, in the genirq layer. v2: fix two typos [ Impact: extend API ] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: linux-arch@vger.kernel.org LKML-Reference: <49F654E9.4070809@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> 
according to Ingo, change set_affinity() in irq_chip should return int,
because that way we can handle failure cases in a much cleaner way, in
the genirq layer.

v2: fix two typos

[ Impact: extend API ]

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: linux-arch@vger.kernel.org
LKML-Reference: <49F654E9.4070809@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
xen: honour VCPU availability on boot 2009-04-08T21:25:51+00:00 Ian Campbell Ian.Campbell@citrix.com 2009-04-02T12:24:28+00:00 d745562cc40bff60f0597004d8128fa0225cc267 If a VM is booted with offline VCPUs then unplug them during boot. Determining the availability of a VCPU requires access to XenStore which is not available at the point smp_prepare_cpus() is called, therefore we bring up all VCPUS initially and unplug the offline ones as soon as XenStore becomes available. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> 
If a VM is booted with offline VCPUs then unplug them during boot. Determining
the availability of a VCPU requires access to XenStore which is not available
at the point smp_prepare_cpus() is called, therefore we bring up all VCPUS
initially and unplug the offline ones as soon as XenStore becomes available.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>