Doug / smarc-fsl-linux-kernel

23 Mar, 2012

1 commit

  • d4c6fa73f   Merge tag 'stable/for-linus-3.4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen ... Browse Code »

    Pull xen updates from Konrad Rzeszutek Wilk:
    "which has three neat features:

    - PV multiconsole support, so that there can be hvc1, hvc2, etc; This
    can be used in HVM and in PV mode.

    - P-state and C-state power management driver that uploads said power
    management data to the hypervisor. It also inhibits cpufreq
    scaling drivers to load so that only the hypervisor can make power
    management decisions - fixing a weird perf bug.

    There is one thing in the Kconfig that you won't like: "default y
    if (X86_ACPI_CPUFREQ = y || X86_POWERNOW_K8 = y)" (note, that it
    all depends on CONFIG_XEN which depends on CONFIG_PARAVIRT which by
    default is off). I've a fix to convert that boolean expression
    into "default m" which I am going to post after the cpufreq git
    pull - as the two patches to make this work depend on a fix in Dave
    Jones's tree.

    - Function Level Reset (FLR) support in the Xen PCI backend.

    Fixes:

    - Kconfig dependencies for Xen PV keyboard and video
    - Compile warnings and constify fixes
    - Change over to use percpu_xxx instead of this_cpu_xxx"

    Fix up trivial conflicts in drivers/tty/hvc/hvc_xen.c due to changes to
    a removed commit.

    * tag 'stable/for-linus-3.4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
    xen kconfig: relax INPUT_XEN_KBDDEV_FRONTEND deps
    xen/acpi-processor: C and P-state driver that uploads said data to hypervisor.
    xen: constify all instances of "struct attribute_group"
    xen/xenbus: ignore console/0
    hvc_xen: introduce HVC_XEN_FRONTEND
    hvc_xen: implement multiconsole support
    hvc_xen: support PV on HVM consoles
    xenbus: don't free other end details too early
    xen/enlighten: Expose MWAIT and MWAIT_LEAF if hypervisor OKs it.
    xen/setup/pm/acpi: Remove the call to boot_option_idle_override.
    xenbus: address compiler warnings
    xen: use this_cpu_xxx replace percpu_xxx funcs
    xen/pciback: Support pci_reset_function, aka FLR or D3 support.
    pci: Introduce __pci_reset_function_locked to be used when holding device_lock.
    xen: Utilize the restore_msi_irqs hook.

    Linus Torvalds
     

15 Mar, 2012

1 commit

13 Jan, 2012

1 commit

  • 8ea11f7f1   xen/balloon: Move the registration from device to subsystem. ... Browse Code »

    With git commit 070680218379e15c1901f4bf21b98e3cbf12b527
    "xen-balloon: convert sysdev_class to a regular subsystem" we would
    end up with the attributes being put in:

    /sys/devices/xen_memory0/target_kb
    instead of
    /sys/devices/system/xen_memory/xen_memory0/target_kb

    Making the tools inable to deflate the kernel to make more space
    for launching another guest and printing:
    Error: Failed to query current memory allocation of dom0

    Reported-by: Sander Eikelenboom
    Suggested-by: Kay Sievers
    Signed-off-by: Konrad Rzeszutek Wilk

    Konrad Rzeszutek Wilk
     

15 Dec, 2011

1 commit

30 Jul, 2011

1 commit

09 Jul, 2011

1 commit

  • a50777c79   xen: tmem: self-ballooning and frontswap-selfshrinking ... Browse Code »

    This patch introduces two in-kernel drivers for Xen transcendent memory
    ("tmem") functionality that complement cleancache and frontswap. Both
    use control theory to dynamically adjust and optimize memory utilization.
    Selfballooning controls the in-kernel Xen balloon driver, targeting a goal
    value (vm_committed_as), thus pushing less frequently used clean
    page cache pages (through the cleancache code) into Xen tmem where
    Xen can balance needs across all VMs residing on the physical machine.
    Frontswap-selfshrinking controls the number of pages in frontswap,
    driving it towards zero (effectively doing a partial swapoff) when
    in-kernel memory pressure subsides, freeing up RAM for other VMs.

    More detail is provided in the header comment of xen-selfballooning.c.

    Signed-off-by: Dan Magenheimer

    [v8: konrad.wilk@oracle.com: set default enablement depending on frontswap]
    [v7: konrad.wilk@oracle.com: fix capitalization and punctuation in comments]
    [v6: fix frontswap-selfshrinking initialization]
    [v6: konrad.wilk@oracle.com: fix init pr_infos; add comments about swap]
    [v5: konrad.wilk@oracle.com: add NULL to attr list; move inits up to decls]
    [v4: dkiper@net-space.pl: use strict_strtoul plus a few syntactic nits]
    [v3: konrad.wilk@oracle.com: fix potential divides-by-zero]
    [v3: konrad.wilk@oracle.com: add many more comments, fix nits]
    [v2: rebased to linux-3.0-rc1]
    [v2: Ian.Campbell@citrix.com: reorganize as new file (xen-selfballoon.c)]
    [v2: dkiper@net-space.pl: proper access to vm_committed_as]
    [v2: dkiper@net-space.pl: accounting fixes]
    Cc: Jan Beulich
    Cc: Jeremy Fitzhardinge
    Cc:

    Dan Magenheimer
     

16 Mar, 2011

1 commit

  • 803eb047a   xen-balloon: Move core balloon functionality out of module ... Browse Code »

    The basic functionality of ballooning pages is useful for Xen drivers in
    general. Rather than require a dependency on the balloon module, split
    the functionality that is reused into the core. The balloon module is
    still required to follow ballooning requests from xenstore or to view
    balloon statistics in sysfs.

    Acked-by: Ian Campbell
    Signed-off-by: Daniel De Graaf
    Signed-off-by: Konrad Rzeszutek Wilk

    Daniel De Graaf