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2007-10-16kprobes: support kretprobe blacklistMasami Hiramatsu3-1/+15
Introduce architecture dependent kretprobe blacklists to prohibit users from inserting return probes on the function in which kprobes can be inserted but kretprobes can not. This patch also removes "__kprobes" mark from "__switch_to" on x86_64 and registers "__switch_to" to the blacklist on x86-64, because that mark is to prohibit user from inserting only kretprobe. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-16fix memory hot remove not configured case.KAMEZAWA Hiroyuki2-11/+0
Now, arch dependent code around CONFIG_MEMORY_HOTREMOVE is a mess. This patch cleans up them. This is against 2.6.23-rc6-mm1. - fix compile failure on ia64/ CONFIG_MEMORY_HOTPLUG && !CONFIG_MEMORY_HOTREMOVE case. - For !CONFIG_MEMORY_HOTREMOVE, add generic no-op remove_memory(), which returns -EINVAL. - removed remove_pages() only used in powerpc. - removed no-op remove_memory() in i386, sh, sparc64, x86_64. - only powerpc returns -ENOSYS at memory hot remove(no-op). changes it to return -EINVAL. Note: Currently, only ia64 supports CONFIG_MEMORY_HOTREMOVE. I welcome other archs if there are requirements and testers. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-16During VM oom condition, kill all threads in process groupWill Schmidt1-1/+1
We have had complaints where a threaded application is left in a bad state after one of it's threads is killed when we hit a VM: out_of_memory condition. Killing just one of the process threads can leave the application in a bad state, whereas killing the entire process group would allow for the application to restart, or be otherwise handled, and makes it very obvious that something has gone wrong. This change allows the entire process group to be taken down, rather than just the one thread. Signed-off-by: Will Schmidt <will_schmidt@vnet.ibm.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ian Molton <spyro@f2s.com> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Mikael Starvik <starvik@axis.com> Cc: David Howells <dhowells@redhat.com> Cc: Andi Kleen <ak@suse.de> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Matthew Wilcox <willy@debian.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Cc: Richard Curnow <rc@rc0.org.uk> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-16x86_64: SPARSEMEM_VMEMMAP 2M page size supportChristoph Lameter1-0/+45
x86_64 uses 2M page table entries to map its 1-1 kernel space. We also implement the virtual memmap using 2M page table entries. So there is no additional runtime overhead over FLATMEM, initialisation is slightly more complex. As FLATMEM still references memory to obtain the mem_map pointer and SPARSEMEM_VMEMMAP uses a compile time constant, SPARSEMEM_VMEMMAP should be superior. With this SPARSEMEM becomes the most efficient way of handling virt_to_page, pfn_to_page and friends for UP, SMP and NUMA on x86_64. [apw@shadowen.org: code resplit, style fixups] [apw@shadowen.org: vmemmap x86_64: ensure end of section memmap is initialised] Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andy Whitcroft <apw@shadowen.org> Acked-by: Mel Gorman <mel@csn.ul.ie> Cc: Andi Kleen <ak@suse.de> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-16x86: optimize page faults like all other achitectures and kill notifier cruftChristoph Hellwig4-52/+39
x86(-64) are the last architectures still using the page fault notifier cruft for the kprobes page fault hook. This patch converts them to the proper direct calls, and removes the now unused pagefault notifier bits aswell as the cruft in kprobes.c that was related to this mess. I know Andi didn't really like this, but all other architecture maintainers agreed the direct calls are much better and besides the obvious cruft removal a common way of dealing with kprobes across architectures is important aswell. [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: fix sparc64] Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Andi Kleen <ak@suse.de> Cc: <linux-arch@vger.kernel.org> Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-16Convert cpu_sibling_map to be a per cpu variableMike Travis7-38/+38
Convert cpu_sibling_map from a static array sized by NR_CPUS to a per_cpu variable. This saves sizeof(cpumask_t) * NR unused cpus. Access is mostly from startup and CPU HOTPLUG functions. Signed-off-by: Mike Travis <travis@sgi.com> Cc: Andi Kleen <ak@suse.de> Cc: Christoph Lameter <clameter@sgi.com> Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-16x86: Convert cpu_core_map to be a per cpu variableMike Travis8-42/+54
This is from an earlier message from 'Christoph Lameter': cpu_core_map is currently an array defined using NR_CPUS. This means that we overallocate since we will rarely really use maximum configured cpu. If we put the cpu_core_map into the per cpu area then it will be allocated for each processor as it comes online. This means that the core map cannot be accessed until the per cpu area has been allocated. Xen does a weird thing here looping over all processors and zeroing the masks that are not yet allocated and that will be zeroed when they are allocated. I commented the code out. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Mike Travis <travis@sgi.com> Cc: Andi Kleen <ak@suse.de> Cc: Christoph Lameter <clameter@sgi.com> Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-16Consolidate PTRACE_DETACHAlexey Dobriyan2-10/+0
Identical handlers of PTRACE_DETACH go into ptrace_request(). Not touching compat code. Not touching archs that don't call ptrace_request. Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Acked-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-11lockdep: annotate kprobes irq fiddlingPeter Zijlstra2-0/+14
kprobes disables irqs for jprobes, but does not tell lockdep about it. This resolves this warning during an allyesconfig bzImage bootup test: [ 423.670337] WARNING: at kernel/lockdep.c:2658 check_flags() [ 423.670341] [<c0107f01>] show_trace_log_lvl+0x19/0x2e [ 423.670348] [<c0107ffa>] show_trace+0x12/0x14 [ 423.670350] [<c0108010>] dump_stack+0x14/0x16 [ 423.670353] [<c015249d>] check_flags+0x95/0x142 [ 423.670357] [<c0155576>] lock_acquire+0x52/0xb8 [ 423.670360] [<c1313c90>] _spin_lock+0x2e/0x58 [ 423.670365] [<c11b72f9>] jtcp_rcv_established+0x6e/0x189 [ 423.670369] [<c11810da>] tcp_v4_do_rcv+0x30b/0x620 [ 423.670373] [<c1181c8c>] tcp_v4_rcv+0x89d/0x8fa [ 423.670376] [<c1167dba>] ip_local_deliver+0x17d/0x225 [ 423.670380] [<c11682f5>] ip_rcv+0x493/0x4ce [ 423.670383] [<c11177ef>] netif_receive_skb+0x347/0x365 [ 423.670388] [<c07b6e7b>] nv_napi_poll+0x501/0x6c3 [ 423.670393] [<c1115b1a>] net_rx_action+0xa3/0x1b6 [ 423.670396] [<c013bdee>] __do_softirq+0x76/0xfb [ 423.670400] [<c0109189>] do_softirq+0x75/0xf3 [ akpm: checkpatch.pl cleanups ] Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2007-10-11lockdep: x86_64: connect the sysexit hookPeter Zijlstra2-12/+15
Run the lockdep_sys_exit hook after all other C code on the syscall return path. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-10-11lockdep: i386: connect the sysexit hookPeter Zijlstra1-0/+4
Run the lockdep_sys_exit hook after all other C code on the syscall return path. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-10-14x86: force timer broadcast on late AMD C1E detectionThomas Gleixner1-0/+26
The 64bit SMP bootup is slightly different to the 32bit one. It enables the boot CPU local APIC timer before all CPUs are brought up. Some AMD C1E systems have the C1E feature flag only set in the secondary CPU. Due to the early enable of the boot CPU local APIC timer the APIC timer is registered as a fully functional device. When we detect the wreckage during the bringup of the secondary CPU, we need to force the boot CPU into broadcast mode. Check the C1E caused APIC timer disable, when the secondary APIC timer is initialized. If the boot CPU APIC timer was registered as a functional clock event device, then fix this up and utilize the CLOCK_EVT_NOTIFY_BROADCAST_FORCE mechanism to force the already registered boot CPU APIC timer into broadcast mode. Tested by force injecting the failure mode. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-14x86: move local APIC timer init to the end of start_secondary()Thomas Gleixner1-5/+2
Preparatory patch for the AMD C1E wreckage fixup. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-14x86: fix missing include for vsyscallDave Jones1-0/+1
> Maybe I just picked a bad time to try, but... > > arch/x86/kernel/alternative.c: In function 'apply_alternatives': > arch/x86/kernel/alternative.c:191: error: 'VSYSCALL_START' undeclared (first use in this function) > arch/x86/kernel/alternative.c:191: error: (Each undeclared identifier is reported only once > arch/x86/kernel/alternative.c:191: error: for each function it appears in.) > arch/x86/kernel/alternative.c:191: error: 'VSYSCALL_END' undeclared (first use in this function) > make[1]: *** [arch/x86/kernel/alternative.o] Error 1 > make: *** [arch/x86/kernel] Error 2 Try this. Include missing header for vsyscall. Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-14long vs. unsigned long - low-hanging fruits in driversAl Viro1-1/+1
deal with signedness of the stuff passed to set_bit() et.al. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-13Delete filenames in comments.Dave Jones49-97/+15
Since the x86 merge, lots of files that referenced their own filenames are no longer correct. Rather than keep them up to date, just delete them, as they add no real value. Additionally: - fix up comment formatting in scx200_32.c - Remove a credit from myself in setup_64.c from a time when we had no SCM - remove longwinded history from tsc_32.c which can be figured out from git. Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-12x86/pci/acpi: fix DMI const-ification falloutJeff Garzik1-1/+1
Fix DMI const-ification fallout that appeared when merging subsystem trees. Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-12x86: fence oostores on 64-bitNick Piggin1-0/+1
movnt* instructions are not strongly ordered with respect to other stores, so if we are to assume stores are strongly ordered in the rest of the 64 bit code, we must fence these off (see similar examples in 32 bit code). [ The AMD memory ordering document seems to say that nontemporal stores can also pass earlier regular stores, so maybe we need sfences _before_ movnt* everywhere too? ] Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-12Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6Linus Torvalds9-9/+315
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: (37 commits) PCI: merge almost all of pci_32.h and pci_64.h together PCI: X86: Introduce and enable PCI domain support PCI: Add 'nodomains' boot option, and pci_domains_supported global PCI: modify PCI bridge control ISA flag for clarity PCI: use _CRS for PCI resource allocation PCI: avoid P2P prefetch window for expansion ROMs PCI: skip ISA ioresource alignment on some systems PCI: remove transparent bridge sizing pci: write file size to inode on proc bus file write pci: use size stored in proc_dir_entry for proc bus files pci: implement "pci=noaer" PCI: fix IDE legacy mode resources MSI: Use correct data offset for 32-bit MSI in read_msi_msg() PCI: Fix incorrect argument order to list_add_tail() in PCI dynamic ID code PCI: i386: Compaq EVO N800c needs PCI bus renumbering PCI: Remove no longer correct documentation regarding MSI vector assignment PCI: re-enable onboard sound on "MSI K8T Neo2-FIR" PCI: quirk_vt82c586_acpi: Omit reading PCI revision ID PCI: quirk amd_8131_mmrbc: Omit reading pci revision ID cpqphp: Use PCI_CLASS_REVISION instead of PCI_REVISION_ID for read ...
2007-10-12Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreqLinus Torvalds14-22/+9
* master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq: [CPUFREQ] Don't take semaphore in cpufreq_quick_get() [CPUFREQ] Support different families in fid/did to frequency conversion [CPUFREQ] cpufreq_stats: misc cpuinit section annotations [CPUFREQ] implement !CONFIG_CPU_FREQ stub for cpufreq_unregister_notifier() [CPUFREQ] mark hotplug notifier callback as __cpuinit [CPUFREQ] Only check for transition latency on problematic governors (kconfig fix) [CPUFREQ] allow ondemand and conservative cpufreq governors to be used as default [CPUFREQ] move policy's governor initialisation out of low-level drivers into cpufreq core [CPUFREQ] Longhaul - Add support for PM133 northbridge [CPUFREQ] x86: use num_online_nodes to get physical cpus numbers for
2007-10-12PCI: X86: Introduce and enable PCI domain supportJeff Garzik2-8/+11
* fix bug in pci_read() and pci_write() which prevented PCI domain support from working (hardcoded domain 0). * unconditionally enable CONFIG_PCI_DOMAINS * implement pci_domain_nr() and pci_proc_domain(), as required of all arches when CONFIG_PCI_DOMAINS is enabled. * store domain in struct pci_sysdata, as assigned by ACPI * support "pci=nodomains" Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12PCI: modify PCI bridge control ISA flag for clarityGary Hade1-1/+1
Modify PCI Bridge Control ISA flag for clarity This patch changes PCI_BRIDGE_CTL_NO_ISA to PCI_BRIDGE_CTL_ISA and modifies it's clarifying comment and locations where used. The change reduces the chance of future confusion since it makes the set/unset meaning of the bit the same in both the bridge control register and bridge_ctl field of the pci_bus struct. Signed-off-by: Gary Hade <garyhade@us.ibm.com> Acked-by: Linas Vepstas <linas@austin.ibm.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12PCI: use _CRS for PCI resource allocationGary Hade3-0/+143
Use _CRS for PCI resource allocation This patch resolves an issue where incorrect PCI memory and i/o ranges are being assigned to hotplugged PCI devices on some IBM systems. The resource mis-allocation not only makes the PCI device unuseable but often makes the entire system unuseable due to resulting machine checks. The hotplug capable PCI slots on the affected systems are not located under a standard P2P bridge but are instead located under PCI root bridges or subtractive decode P2P bridges. For example, the IBM x3850 contains 2 hotplug capable PCI-X slots and 4 hotplug capable PCIe slots with the PCI-X slots each located under a PCI root bridge and the PCIe slots each located under a subtractive decode P2P bridge. The current i386/x86_64 PCI resource allocation code does not use _CRS returned resource information. No other resource information source is available for slots that are not below a standard P2P bridge so incorrect ranges are being allocated from e820 hole causing the bad result. This patch causes the kernel to use _CRS returned resource info. It is roughly based on a change provided by Matthew Wilcox for the ia64 kernel in 2005. Due to possible buggy BIOS factor and possible yet to be discovered kernel issues the function is disabled by default and can be enabled with pci=use_crs. Signed-off-by: Gary Hade <gary.hade@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12PCI: skip ISA ioresource alignment on some systemsGary Hade3-0/+56
Skip ISA ioresource alignment on some systems To conserve limited PCI i/o resource on some IBM multi-node systems, the BIOS allocates (via _CRS) and expects the kernel to use addresses in ranges currently excluded by pcibios_align_resource() [i386/pci/i386.c]. This change allows the kernel to use the currently excluded address ranges on the IBM x3800, x3850, and x3950. Signed-off-by: Gary Hade <gary.hade@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12PCI: i386: Compaq EVO N800c needs PCI bus renumberingJuha Laiho1-0/+10
Force PCI bus renumbering for Compaq EVO N800c laptop, in order to get the cardbus slot recognised. Signed-off-by: Juha Laiho <Juha.Laiho@iki.fi> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12PCI: re-enable onboard sound on "MSI K8T Neo2-FIR"Johannes Goecke1-0/+47
On the "MSI K8T Neo2-FIR" board the BIOS disables the onboard soundcard, if a second PCI soundcard is present. This patch sets the korrect register bit to enable the onboard sound. Removed old code in /drivers/pci/quirks.c that only checks for the PCI-ID and fires on any Board with VIA 8237. New code in /arch/i386/pci/fixup.c checks the DMI-tables and only runs on the specific board. Signed-off-by: Johannes Goecke <goecke@upb.de> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12i386: add support for picopower irq routerThomas Backlund1-0/+39
Add support for PicoPower PT86C523 IRQ router to be used with the in-kernel yenta driver for CardBus. With this patch cardbus works on e.g. Dell Latitude XPi P150CD. Initial patch for kernel 2.4 series by Sune Mølgaard http://molgaard.org/code/linux-2.4.31-picopower.patch Ported to 2.6.20 by Chmouel Boudjnah (http://www.chmouel.com) Testing and confirmation that it works by Austin Acton Cleaned up a little for inclusion in a 2.6.21-rc7 based kernel. Added some more cleanups according to CodingStyle, as noted by Randy Dunlap on LKML. [akpm@linux-foundation.org: build fixes] Signed-off-by: Thomas Backlund <tmb@mandriva.org> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12PCI: pci_get_device call from interrupt in reboot fixupsDenis V. Lunev1-0/+6
The following calltrace is possible now: handle_sysrq machine_emergency_restart mach_reboot_fixups pci_get_device pci_get_subsys down_read The patch skips reboot fixup if called from sysrq-B code. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12dma_free_coherent() needs irqs enabled (sigh)David Brownell2-1/+3
On at least ARM (and I'm told MIPS too) dma_free_coherent() has a newish call context requirement: unlike its dma_alloc_coherent() sibling, it may not be called with IRQs disabled. (This was new behavior on ARM as of late 2005, caused by ARM SMP updates.) This little surprise can be annoyingly driver-visible. Since it looks like that restriction won't be removed, this patch changes the definition of the API to include that requirement. Also, to help catch nonportable drivers, it updates the x86 and swiotlb versions to include the relevant warnings. (I already observed that it trips on the bus_reset_tasklet of the new firewire_ohci driver.) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: David Miller <davem@davemloft.net> Acked-by: Russell King <rmk@arm.linux.org.uk> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12x86: HPET add another ICH7 PCI idVenki Pallipadi1-0/+2
Add another PCI ID for ICH7 force hpet. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Andi Kleen <ak@suse.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
2007-10-12x86: HPET force enable ICH5 suspend/resume fixVenki Pallipadi1-1/+1
A bugfix in ich5 hpet force detect which caused resumes to fail. Thanks to Udo A Steinberg for reporting the problem. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Andi Kleen <ak@suse.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-12x86: HPET force enable for ICH5Venki Pallipadi2-2/+103
force_enable hpet for ICH5. [ Build fixes from Andrew Morton ] Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Andi Kleen <ak@suse.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-12x86: HPET try to activate force detected hpetVenki Pallipadi1-2/+25
Enable HPET later during boot, after the force detect in PCI quirks. Also add a call to repeat the force enabling at resume time. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Andi Kleen <ak@suse.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-12x86: HPET force enable o ICH7 and laterVenki Pallipadi1-0/+102
Force detect and/or enable HPET on ICH chipsets. This patch just handles the detection part and following patches use this information. Adds a function to repeat the force enabling during resume time. Using HPET this way, instead of PIT increases the time CPUs can reside in C-state when system is totally idle. On my test system with Core 2 Duo, average C-state residency goes up from ~20mS to ~80mS. [ Build fixed from Andrew Morton ] Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Andi Kleen <ak@suse.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-12x86: HPET restructure hpet code for hpet force enableVenki Pallipadi1-65/+83
Restructure and rename legacy replacement mode HPET timer support. Just the code structural changes and should be zero functionality change. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Andi Kleen <ak@suse.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-12i386/x8664: cleanup the shared hpet codeChris Wright1-5/+1
Remove hpet_readl/writel from vsyscall.h, where it does not belong anyway. Use the hpet code itself. Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
2007-10-12x86_64: cleanup apic.c after clock events switchChris Wright1-8/+14
Make variables static. Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-12x86_64: remove now unused codeThomas Gleixner7-595/+5
Remove the unused code after the switch to clock events. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
2007-10-12x86: unify timex.h variantsThomas Gleixner2-2/+2
Combine the timex.h variants and move the TSC related code into tsc.h. Move the set_cyc2ns_scale() call into the tsc calibraction code, where it belongs. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
2007-10-12x86: kill 8253pit.hThomas Gleixner1-1/+0
Useless header file with 32 bit and 64 bit variants. Move the single useful line to the place where it is used. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
2007-10-12x86: disable apic timer for AMD C1E enabled CPUsThomas Gleixner2-1/+35
AMDs C1E enabled CPUs stop the local apic timer, when both cores are idle. This is a hardware feature which breaks highres/dynticks. Add the same quirk as we have for 32 bit already. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
2007-10-12x86: Fix irq0 / local apic timer accountingThomas Gleixner2-1/+3
The clock events merge introduced a change to the nmi watchdog code to handle the not longer increasing local apic timer count in the broadcast mode. This is fine for UP, but on SMP it pampers over a stuck CPU which is not handling the broadcast interrupt due to the unconditional sum up of local apic timer count and irq0 count. To cover all cases we need to keep track on which CPU irq0 is handled. In theory this is CPU#0 due to the explicit disabling of irq balancing for irq0, but there are systems which ignore this on the hardware level. The per cpu irq0 accounting allows us to remove the irq0 to CPU0 binding as well. Add a per cpu counter for irq0 and evaluate this instead of the global irq0 count in the nmi watchdog code. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
2007-10-12x86_64: convert to clock eventsThomas Gleixner5-186/+65
Finally switch to the clockevents code. Share code with i386 for hpet and PIT. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
2007-10-12x86_64: Add (not yet used) clock event functionsThomas Gleixner1-0/+79
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
2007-10-12x86_64: prepare idle loop for dynamic ticksChris Wright1-0/+4
Add tick_nohz_{stop,restart}_sched_tick to idle loop in prepartion for turning on dynticks. These are just noops until NO_HZ is enabled. Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
2007-10-12x86_64: remove nested irq disablesThomas Gleixner1-6/+6
setup_APIC_timer disables interrupts anyway. So no need to do the same in setup_boot_APIC_clock and setup_secondary_APIC_clock. Disable interrupts explicit in the calibration code. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
2007-10-12x86_64: apic change setup_APIC_timer calling conventionThomas Gleixner1-4/+4
setup_APIC_timer takes the file global calibration result as an argument. Remove it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
2007-10-12x86_64: Remove APIC_DIVISORThomas Gleixner1-5/+3
APIC_DIVISOR is rather useless. It makes the calibration result more accurate in the first place, but we discard this later when we write the value to the APIC timer by dividing the calibration value by APIC_DIVISOR. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
2007-10-12x86_64: Move apic calibration code aroundThomas Gleixner1-9/+6
Let the calibration code fill in calibration_result directly and move the variable on top of the file. Fixup a printk w/o log level while at it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
2007-10-12x86_64: remove pit synchronizationThomas Gleixner1-18/+0
The APIC timer setup code synchronizes the local APIC timer to the PIT/HPET. This is pointless as the PIT and the local APIC timer frequency are not correlated and the APIC timer calibration can never be accurate enough to avoid that the local APIC timer and the PIT/HPET drift apart. Simply remove it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
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