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2009-02-09Merge branch 'x86/paravirt' into x86/apicIngo Molnar
Conflicts: arch/x86/mach-voyager/voyager_smp.c
2009-02-09xen: set irq_chip disableJeremy Fitzhardinge
By default, the irq_chip.disable operation is a no-op. Explicitly set it to disable the Xen event channel. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-09x86: unify do_IRQ()Jeremy Fitzhardinge
With the differences in interrupt handling hoisted into handle_irq(), do_IRQ is more or less identical between 32 and 64 bit, so unify it. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-09x86: add handle_irq() to allow interrupt injectionJeremy Fitzhardinge
Xen uses a different interrupt path, so introduce handle_irq() to allow interrupts to be inserted into the normal interrupt path. This is handled slightly differently on 32 and 64-bit. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-09x86: find nr_irqs_gsi with mp_ioapic_routingYinghai Lu
Impact: find right nr_irqs_gsi on some systems. One test-system has gap between gsi's: [ 0.000000] ACPI: IOAPIC (id[0x04] address[0xfec00000] gsi_base[0]) [ 0.000000] IOAPIC[0]: apic_id 4, version 0, address 0xfec00000, GSI 0-23 [ 0.000000] ACPI: IOAPIC (id[0x05] address[0xfeafd000] gsi_base[48]) [ 0.000000] IOAPIC[1]: apic_id 5, version 0, address 0xfeafd000, GSI 48-54 [ 0.000000] ACPI: IOAPIC (id[0x06] address[0xfeafc000] gsi_base[56]) [ 0.000000] IOAPIC[2]: apic_id 6, version 0, address 0xfeafc000, GSI 56-62 ... [ 0.000000] nr_irqs_gsi: 38 So nr_irqs_gsi is not right. some irq for MSI will overwrite with io_apic. need to get that with acpi_probe_gsi when acpi io_apic is used Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-09x86: check_timer cleanupYinghai Lu
Impact: make check-timer more robust potentially solve boot fragility For edge trigger io-apic routing, we already unmasked the pin via setup_IO_APIC_irq(), so don't unmask it again. Also call local_irq_disable() between timer_irq_works(), because it calls local_irq_enable() inside. Also remove not needed apic version reading for 64-bit Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-09x86: use NR_IRQS_LEGACY to replace 16Yinghai Lu
Impact: cleanup also could kill platform_legacy_irq Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-09x86/irq: optimize nr_irqsYinghai Lu
Impact: make nr_irqs depend more on cards used in a system depend on nr_irq_gsi more, and have a ratio for MSI. v2: make nr_irqs less than NR_VECTORS * nr_cpu_ids aka if only one cpu, we only can support nr_irqs = NR_VECTORS Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-05x86: clean up arch/x86/Kconfig*Ingo Molnar
- Consistent alignment of help text - Use the ---help--- keyword everywhere consistently as a visual separator - fix whitespace mismatches Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-05x86, numaq: cleanupsIngo Molnar
Also move xquad_portio over to where it's allocated. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-05Merge branch 'x86/urgent' into x86/apicIngo Molnar
Conflicts: arch/x86/mach-default/setup.c Semantic merge: arch/x86/kernel/irqinit_32.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-05smp, generic: introduce arch_disable_smp_support(), build fixIngo Molnar
This function should be provided on UP too. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-05x86: move default_ipi_xx back to ipi.cYinghai Lu
Impact: cleanup only leave _default_ipi_xx etc in .h Beyond the cleanup factor, this saves a bit of code size as well: text data bss dec hex filename 7281931 1630144 1463304 10375379 9e50d3 vmlinux.before 7281753 1630144 1463304 10375201 9e5021 vmlinux.after Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-05x86, apic: explain the purpose of max_physical_apicidIngo Molnar
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-05smp, generic: introduce arch_disable_smp_support() instead of ↵Ingo Molnar
disable_ioapic_setup() Impact: cleanup disable_ioapic_setup() in init/main.c is ugly as the function is x86-specific. The #ifdef inline prototype there is ugly too. Replace it with a generic arch_disable_smp_support() function - which has a weak alias for non-x86 architectures and for non-ioapic x86 builds. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-05x86: disable intel_iommu support by defaultKyle McMartin
Due to recurring issues with DMAR support on certain platforms. There's a number of filesystem corruption incidents reported: https://bugzilla.redhat.com/show_bug.cgi?id=479996 http://bugzilla.kernel.org/show_bug.cgi?id=12578 Provide a Kconfig option to change whether it is enabled by default. If disabled, it can still be reenabled by passing intel_iommu=on to the kernel. Keep the .config option off by default. Signed-off-by: Kyle McMartin <kyle@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-By: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-04x86: don't apply __supported_pte_mask to non-present ptesJeremy Fitzhardinge
On an x86 system which doesn't support global mappings, __supported_pte_mask has _PAGE_GLOBAL clear, to make sure it never appears in the PTE. pfn_pte() and so on will enforce it with: static inline pte_t pfn_pte(unsigned long page_nr, pgprot_t pgprot) { return __pte((((phys_addr_t)page_nr << PAGE_SHIFT) | pgprot_val(pgprot)) & __supported_pte_mask); } However, we overload _PAGE_GLOBAL with _PAGE_PROTNONE on non-present ptes to distinguish them from swap entries. However, applying __supported_pte_mask indiscriminately will clear the bit and corrupt the pte. I guess the best fix is to only apply __supported_pte_mask to present ptes. This seems like the right solution to me, as it means we can completely ignore the issue of overlaps between the present pte bits and the non-present pte-as-swap entry use of the bits. __supported_pte_mask contains the set of flags we support on the current hardware. We also use bits in the pte for things like logically present ptes with no permissions, and swap entries for swapped out pages. We should only apply __supported_pte_mask to present ptes, because otherwise we may destroy other information being stored in the ptes. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-02-04xen: use direct ops on 64-bitJeremy Fitzhardinge
Enable the use of the direct vcpu-access operations on 64-bit. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2009-02-04xen: make direct versions of irq_enable/disable/save/restore to common codeJeremy Fitzhardinge
Now that x86-64 has directly accessible percpu variables, it can also implement the direct versions of these operations, which operate on a vcpu_info structure directly embedded in the percpu area. In fact, the 64-bit versions are more or less identical, and so can be shared. The only two differences are: 1. xen_restore_fl_direct takes its argument in eax on 32-bit, and rdi on 64-bit. Unfortunately it isn't possible to directly refer to the 2nd lsb of rdi directly (as you can with %ah), so the code isn't quite as dense. 2. check_events needs to variants to save different registers. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2009-02-04xen: setup percpu data pointersJeremy Fitzhardinge
We need to access percpu data fairly early, so set up the percpu registers as soon as possible. We only need to load the appropriate segment register. We already have a GDT, but its hard to change it early because we need to manipulate the pagetable to do so, and that hasn't been set up yet. Also, set the kernel stack when bringing up secondary CPUs. If we don't they all end up sharing the same stack... Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2009-02-04Merge branch 'core/percpu' into x86/paravirtH. Peter Anvin
2009-02-04xen: fix 32-bit build resulting from mmu moveJeremy Fitzhardinge
Moving the mmu code from enlighten.c to mmu.c inadvertently broke the 32-bit build. Fix it. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2009-02-05x86: fix grammar in user-visible BIOS warningAlex Chiang
Fix user-visible grammo. Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-04x86/Kconfig.cpu: make Kconfig help readable in the consoleBorislav Petkov
Impact: cleanup Some lines exceed the 80 char width making them unreadable. Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-04x86, 64-bit: print DMI info in the oops traceKyle McMartin
This patch echoes what we already do on 32-bit since 90f7d25c6b672137344f447a30a9159945ffea72, and prints the DMI product name in show_regs, so that system specific problems can be easily identified. Signed-off-by: Kyle McMartin <kyle@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-04Merge branch 'core/xen' into x86/urgentIngo Molnar
2009-02-03x86: APIC: enable workaround on AMD Fam10h CPUsBorislav Petkov
Impact: fix to enable APIC for AMD Fam10h on chipsets with a missing/b0rked ACPI MP table (MADT) Booting a 32bit kernel on an AMD Fam10h CPU running on chipsets with missing/b0rked MP table leads to a hang pretty early in the boot process due to the APIC not being initialized. Fix that by falling back to the default APIC base address in 32bit code, as it is done in the 64bit codepath. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-02-03xen: disable interrupts before saving in percpuJeremy Fitzhardinge
Impact: Fix race condition xen_mc_batch has a small preempt race where it takes the address of a percpu variable immediately before disabling interrupts, thereby leaving a small window in which we may migrate to another cpu and save the flags in the wrong percpu variable. Disable interrupts before saving the old flags in a percpu. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-02-03x86/paravirt: return full 64-bit resultJeremy Fitzhardinge
Impact: Bug fix A hunk went missing in the original patch, and callee-save callsites were not marked as returning the upper 32-bit of result, causing Badness. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-02-03x86: add x86@kernel.org to MAINTAINERSH. Peter Anvin
Impact: Documentation only There is an email alias as well to reach the x86 maintainers: x86@kernel.org. Document it. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-02-02x86: push old stack address on irqstack for unwinderMartin Hicks
Impact: Fixes dumpstack and KDB on 64 bits This re-adds the old stack pointer to the top of the irqstack to help with unwinding. It was removed in commit d99015b1abbad743aa049b439c1e1dede6d0fa49 as part of the save_args out-of-line work. Both dumpstack and KDB require this information. Signed-off-by: Martin Hicks <mort@sgi.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-02-03x86, percpu: fix kexec with vmlinuxYinghai Lu
Impact: fix regression with kexec with vmlinux Split data.init into data.init, percpu, data.init2 sections instead of let data.init wrap percpu secion. Thus kexec loading will be happy, because sections will not overlap. Before the patch we have: Elf file type is EXEC (Executable file) Entry point 0x200000 There are 6 program headers, starting at offset 64 Program Headers: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flags Align LOAD 0x0000000000200000 0xffffffff80200000 0x0000000000200000 0x0000000000ca6000 0x0000000000ca6000 R E 200000 LOAD 0x0000000000ea6000 0xffffffff80ea6000 0x0000000000ea6000 0x000000000014dfe0 0x000000000014dfe0 RWE 200000 LOAD 0x0000000001000000 0xffffffffff600000 0x0000000000ff4000 0x0000000000000888 0x0000000000000888 RWE 200000 LOAD 0x00000000011f6000 0xffffffff80ff6000 0x0000000000ff6000 0x0000000000073086 0x0000000000a2d938 RWE 200000 LOAD 0x0000000001400000 0x0000000000000000 0x000000000106a000 0x00000000001d2ce0 0x00000000001d2ce0 RWE 200000 NOTE 0x00000000009e2c1c 0xffffffff809e2c1c 0x00000000009e2c1c 0x0000000000000024 0x0000000000000024 4 Section to Segment mapping: Segment Sections... 00 .text .notes __ex_table .rodata __bug_table .pci_fixup .builtin_fw __ksymtab __ksymtab_gpl __ksymtab_strings __init_rodata __param 01 .data .init.rodata .data.cacheline_aligned .data.read_mostly 02 .vsyscall_0 .vsyscall_fn .vsyscall_gtod_data .vsyscall_1 .vsyscall_2 .vgetcpu_mode .jiffies 03 .data.init_task .smp_locks .init.text .init.data .init.setup .initcall.init .con_initcall.init .x86_cpu_dev.init .altinstructions .altinstr_replacement .exit.text .init.ramfs .bss 04 .data.percpu 05 .notes After patch we've got: Elf file type is EXEC (Executable file) Entry point 0x200000 There are 7 program headers, starting at offset 64 Program Headers: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flags Align LOAD 0x0000000000200000 0xffffffff80200000 0x0000000000200000 0x0000000000ca6000 0x0000000000ca6000 R E 200000 LOAD 0x0000000000ea6000 0xffffffff80ea6000 0x0000000000ea6000 0x000000000014dfe0 0x000000000014dfe0 RWE 200000 LOAD 0x0000000001000000 0xffffffffff600000 0x0000000000ff4000 0x0000000000000888 0x0000000000000888 RWE 200000 LOAD 0x00000000011f6000 0xffffffff80ff6000 0x0000000000ff6000 0x0000000000073086 0x0000000000073086 RWE 200000 LOAD 0x0000000001400000 0x0000000000000000 0x000000000106a000 0x00000000001d2ce0 0x00000000001d2ce0 RWE 200000 LOAD 0x000000000163d000 0xffffffff8123d000 0x000000000123d000 0x0000000000000000 0x00000000007e6938 RWE 200000 NOTE 0x00000000009e2c1c 0xffffffff809e2c1c 0x00000000009e2c1c 0x0000000000000024 0x0000000000000024 4 Section to Segment mapping: Segment Sections... 00 .text .notes __ex_table .rodata __bug_table .pci_fixup .builtin_fw __ksymtab __ksymtab_gpl __ksymtab_strings __init_rodata __param 01 .data .init.rodata .data.cacheline_aligned .data.read_mostly 02 .vsyscall_0 .vsyscall_fn .vsyscall_gtod_data .vsyscall_1 .vsyscall_2 .vgetcpu_mode .jiffies 03 .data.init_task .smp_locks .init.text .init.data .init.setup .initcall.init .con_initcall.init .x86_cpu_dev.init .altinstructions .altinstr_replacement .exit.text .init.ramfs 04 .data.percpu 05 .bss 06 .notes Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-02Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: PCI hotplug: Change link order of pciehp & acpiphp PCI hotplug: fakephp: Allocate PCI resources before adding the device PCI MSI: Fix undefined shift by 32 PCI PM: Do not wait for buses in B2 or B3 during resume PCI PM: Power up devices before restoring their state PCI PM: Fix hibernation breakage on EeePC 701 PCI: irq and pci_ids patch for Intel Tigerpoint DeviceIDs PCI PM: Fix suspend error paths and testing facility breakage
2009-02-02Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6: slub: fix per cpu kmem_cache_cpu array memory leak kmalloc: return NULL instead of link failure
2009-02-02Merge 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: fbdev/atyfb: Fix DSP config on some PowerMacs & PowerBooks powerpc: Fix oops on some machines due to incorrect pr_debug() powerpc/ps3: Printing fixups for l64 to ll64 convserion drivers/net powerpc/5200: update device tree binding documentation powerpc/5200: Bugfix for PCI mapping of memory and IMMR powerpc/5200: update defconfigs
2009-02-02Merge 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_rt: don't use first_cpu on cpumask created with cpumask_and sched: fix buddie group latency sched: clear buddies more aggressively sched: symmetric sync vs avg_overlap sched: fix sync wakeups cpuset: fix possible deadlock in async_rebuild_sched_domains
2009-02-02Merge branch 'for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (45 commits) V4L/DVB (10411): s5h1409: Perform s5h1409 soft reset after tuning V4L/DVB (10403): saa7134-alsa: saa7130 doesn't support digital audio V4L/DVB (10229): ivtv: fix memory leak V4L/DVB (10385): gspca - main: Fix memory leak when USB disconnection while streaming. V4L/DVB (10325): em28xx: Fix for fail to submit URB with IRQs and Pre-emption Disabled V4L/DVB (10317): radio-mr800: fix radio->muted and radio->stereo V4L/DVB (10314): cx25840: ignore TUNER_SET_CONFIG in the command callback. V4L/DVB (10288): af9015: bug fix: stick does not work always when plugged V4L/DVB (10287): af9015: fix second FE V4L/DVB (10270): saa7146: fix unbalanced mutex_lock/unlock V4L/DVB (10265): budget.c driver: Kernel oops: "BUG: unable to handle kernel paging request at ffffffff V4L/DVB (10261): em28xx: fix kernel panic on audio shutdown V4L/DVB (10257): em28xx: Fix for KWorld 330U Board V4L/DVB (10256): em28xx: Fix for KWorld 330U AC97 V4L/DVB (10254): em28xx: Fix audio URB transfer buffer race condition V4L/DVB (10250): cx25840: fix regression: fw not loaded on first use V4L/DVB (10248): v4l-dvb: fix a bunch of compile warnings. V4L/DVB (10243): em28xx: fix compile warning V4L/DVB (10240): Fix obvious swapped names in v4l2_subdev logic V4L/DVB (10233): [PATCH] Terratec Cinergy DT XS Diversity new USB ID (0ccd:0081) ...
2009-02-02Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc: pxamci: enable DMA for write ops after CMD/RESP pxamci: replace #ifdef CONFIG_PXA27x with if (cpu_is_pxa27x()) ricoh_mmc: Use suspend_late/resume_early mmci: Add support for ST Micro derivate mmc: Add a MX2/MX3 specific SDHC driver
2009-02-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: icside: fix PCB version 6 support (v2) tx4939ide: typo fix and minor cleanup ide: add CS5536 host driver (v3) ide: Force VIA IDE legacy interrupts for AmigaOne boards IDE: Unregister and disable devices if initialization fails. ide: fix ide_register_port() failure handling ide: struct device - replace bus_id with dev_name(), dev_set_name() ide-cd: fix DMA for non bio-backed requests
2009-02-02Merge branch 'for-upstream' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb * 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb: uwb: lock rc->rsvs_lock with spin_lock_bh() wusb: timeout when waiting for ASL/PZL updates in whci-hcd uwb: remove unused #include <version.h>'s wusb: return -ENOTCONN when resetting a port with no connected device uwb: safely remove all reservations
2009-02-02Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: add text file detailing queue/ sysfs files bio.h: If they MUST be inlined, then use __always_inline Fix misleading comment in bio.h block: fix inconsistent parenthesisation of QUEUE_FLAG_DEFAULT block: fix oops in blk_queue_io_stat()
2009-02-02virtio-pci: do not oops on config change if driver not loadedMark McLoughlin
The host really shouldn't be notifying us of config changes before the device status is VIRTIO_CONFIG_S_DRIVER or VIRTIO_CONFIG_S_DRIVER_OK. However, if we do happen to be interrupted while we're not attached to a driver, we really shouldn't oops. Prevent this simply by checking that device->driver is non-NULL before trying to notify the driver of config changes. Problem observed by doing a "set_link virtio.0 down" with QEMU before the net driver had been loaded. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-02-02modules: Use a better scheme for refcountingEric Dumazet
Current refcounting for modules (done if CONFIG_MODULE_UNLOAD=y) is using a lot of memory. Each 'struct module' contains an [NR_CPUS] array of full cache lines. This patch uses existing infrastructure (percpu_modalloc() & percpu_modfree()) to allocate percpu space for the refcount storage. Instead of wasting NR_CPUS*128 bytes (on i386), we now use nr_cpu_ids*sizeof(local_t) bytes. On a typical distro, where NR_CPUS=8, shiping 2000 modules, we reduce size of module files by about 2 Mbytes. (1Kb per module) Instead of having all refcounters in the same memory node - with TLB misses because of vmalloc() - this new implementation permits to have better NUMA properties, since each CPU will use storage on its preferred node, thanks to percpu storage. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-02-02pxamci: enable DMA for write ops after CMD/RESPCliff Brake
With the PXA270 MMC hardware, there seems to be an issue of data corruption on writes where a 4KB data block is offset by one byte. If we delay enabling the DMA for writes until after the CMD/RESP has finished, the problem seems to be fixed. related to PXA270 Erratum #91 Tested-by: Vernon Sauder <VernonInHand@gmail.com> Signed-off-by: Cliff Brake <cbrake@bec-systems.com> Acked-by: Eric Miao <eric.miao@marvell.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2009-02-02pxamci: replace #ifdef CONFIG_PXA27x with if (cpu_is_pxa27x())Cliff Brake
Signed-off-by: Cliff Brake <cbrake@bec-systems.com> Acked-by: Eric Miao <eric.miao@marvell.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2009-02-02ricoh_mmc: Use suspend_late/resume_earlyphilipl@overt.org
If ricoh_mmc suspends before sdhci_pci, it will pull the card out from under the controller, which could leave the system in a very confused state. Using suspend_late/resume_early ensures that sdhci_pci suspends first and resumes second. Signed-off-by: Philip Langdale <philipl@overt.org> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2009-02-02mmci: Add support for ST Micro derivateLinus Walleij
This patch adds support for the ST Microelectronics version of the PL180 PrimeCell. They use designer ID 0x80 and have a few alterations/bugfixes related to open drain and HW flow control. They also add some SDIO registers, I am unsure if these are in ST HW only or if this is things also added in later ARM revisions, but they are included in the mmci.h file for completeness. Signed-off-by: Linus Walleij <linus.walleij@ericsson.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2009-02-02mmc: Add a MX2/MX3 specific SDHC driverSascha Hauer
This patch adds a MX2/MX3 specific SDHC driver. The hardware is basically the same as in the MX1, but unlike the MX1 controller the MX2 controller just works as expected. Since the MX1 driver has more workarounds for bugs than anything else I had no success with supporting MX1 and MX2 in a sane way in one driver. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2009-02-02icside: fix PCB version 6 support (v2)Bartlomiej Zolnierkiewicz
We need to pass struct ide_port_info also to ide_host_register(). v2: Fix v5/v6 mismatch noticed by Russell. Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-02-02tx4939ide: typo fix and minor cleanupAtsushi Nemoto
The bcount is greater than 0 and less than or equal to 0x10000. Thus '(bcount & 0xffff) == 0x0000' can be simplified as 'bcount == 0x10000'. Suggested-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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