1 files changed, 99 insertions, 145 deletions

diff --git a/arch/um/Kconfig b/arch/um/Kconfig
index e6ff30266542..740d8a922e48 100644
--- a/arch/um/Kconfig
+++ b/arch/um/Kconfig
@@ -55,6 +55,14 @@ config GENERIC_BUG
         default y
         depends on BUG
 
+config GENERIC_TIME
+        bool
+        default y
+
+config GENERIC_CLOCKEVENTS
+        bool
+        default y
+
 # Used in kernel/irq/manage.c and include/linux/irq.h
 config IRQ_RELEASE_METHOD
         bool
@@ -62,63 +70,25 @@ config IRQ_RELEASE_METHOD
 
 menu "UML-specific options"
 
-config MODE_TT
-        bool "Tracing thread support (DEPRECATED)"
-        default n
-        depends on BROKEN
-        help
-        This option controls whether tracing thread support is compiled
-        into UML. This option is largely obsolete, given that skas0 provides
-        skas security and performance without needing to patch the host.
-        It is safe to say 'N' here; saying 'Y' may cause additional problems
-        with the resulting binary even if you run UML in SKAS mode, and running
-        in TT mode is strongly *NOT RECOMMENDED*.
-
 config STATIC_LINK
         bool "Force a static link"
         default n
-        depends on !MODE_TT
         help
-        If CONFIG_MODE_TT is disabled, then this option gives you the ability
-        to force a static link of UML.  Normally, if only skas mode is built
-        in to UML, it will be linked as a shared binary.  This is inconvenient
-        for use in a chroot jail.  So, if you intend to run UML inside a
-        chroot, and you disable CONFIG_MODE_TT, you probably want to say Y
-        here.
-        Additionally, this option enables using higher memory spaces (up to
-        2.75G) for UML - disabling CONFIG_MODE_TT and enabling this option leads
-        to best results for this.
-
-config KERNEL_HALF_GIGS
-        int "Kernel address space size (in .5G units)"
-        default "1"
-        depends on MODE_TT
-        help
-        This determines the amount of address space that UML will allocate for
-        its own, measured in half Gigabyte units.  The default is 1.
-        Change this only if you need to boot UML with an unusually large amount
-        of physical memory.
-
-config MODE_SKAS
-        bool "Separate Kernel Address Space support" if MODE_TT
-        default y
-        help
-        This option controls whether skas (separate kernel address space)
-        support is compiled in.
-        Unless you have specific needs to use TT mode (which applies almost only
-        to developers), you should say Y here.
-        SKAS mode will make use of the SKAS3 patch if it is applied on the host
-        (and your UML will run in SKAS3 mode), but if no SKAS patch is applied
-        on the host it will run in SKAS0 mode, which is anyway faster than TT
-        mode.
+          This option gives you the ability to force a static link of UML.
+          Normally, UML is linked as a shared binary.  This is inconvenient for
+          use in a chroot jail.  So, if you intend to run UML inside a chroot,
+          you probably want to say Y here.
+          Additionally, this option enables using higher memory spaces (up to
+          2.75G) for UML.
 
 source "arch/um/Kconfig.arch"
 source "mm/Kconfig"
+source "kernel/time/Kconfig"
 
 config LD_SCRIPT_STATIC
         bool
         default y
-        depends on MODE_TT || STATIC_LINK
+        depends on STATIC_LINK
 
 config LD_SCRIPT_DYN
         bool
@@ -128,18 +98,18 @@ config LD_SCRIPT_DYN
 config NET
         bool "Networking support"
         help
-        Unless you really know what you are doing, you should say Y here.
-        The reason is that some programs need kernel networking support even
-        when running on a stand-alone machine that isn't connected to any
-        other computer. If you are upgrading from an older kernel, you
-        should consider updating your networking tools too because changes
-        in the kernel and the tools often go hand in hand. The tools are
-        contained in the package net-tools, the location and version number
-        of which are given in <file:Documentation/Changes>.
+          Unless you really know what you are doing, you should say Y here.
+          The reason is that some programs need kernel networking support even
+          when running on a stand-alone machine that isn't connected to any
+          other computer. If you are upgrading from an older kernel, you
+          should consider updating your networking tools too because changes
+          in the kernel and the tools often go hand in hand. The tools are
+          contained in the package net-tools, the location and version number
+          of which are given in <file:Documentation/Changes>.
 
-        For a general introduction to Linux networking, it is highly
-        recommended to read the NET-HOWTO, available from
-        <http://www.tldp.org/docs.html#howto>.
+          For a general introduction to Linux networking, it is highly
+          recommended to read the NET-HOWTO, available from
+          <http://www.tldp.org/docs.html#howto>.
 
 
 source "fs/Kconfig.binfmt"
@@ -147,99 +117,99 @@ source "fs/Kconfig.binfmt"
 config HOSTFS
         tristate "Host filesystem"
         help
-        While the User-Mode Linux port uses its own root file system for
-        booting and normal file access, this module lets the UML user
-        access files stored on the host.  It does not require any
-        network connection between the Host and UML.  An example use of
-        this might be:
+          While the User-Mode Linux port uses its own root file system for
+          booting and normal file access, this module lets the UML user
+          access files stored on the host.  It does not require any
+          network connection between the Host and UML.  An example use of
+          this might be:
 
-        mount none /tmp/fromhost -t hostfs -o /tmp/umlshare
+          mount none /tmp/fromhost -t hostfs -o /tmp/umlshare
 
-        where /tmp/fromhost is an empty directory inside UML and
-        /tmp/umlshare is a directory on the host with files the UML user
-        wishes to access.
+          where /tmp/fromhost is an empty directory inside UML and
+          /tmp/umlshare is a directory on the host with files the UML user
+          wishes to access.
 
-        For more information, see
-        <http://user-mode-linux.sourceforge.net/hostfs.html>.
+          For more information, see
+          <http://user-mode-linux.sourceforge.net/hostfs.html>.
 
-        If you'd like to be able to work with files stored on the host,
-        say Y or M here; otherwise say N.
+          If you'd like to be able to work with files stored on the host,
+          say Y or M here; otherwise say N.
 
 config HPPFS
         tristate "HoneyPot ProcFS (EXPERIMENTAL)"
         depends on EXPERIMENTAL
         help
-        hppfs (HoneyPot ProcFS) is a filesystem which allows UML /proc
-        entries to be overridden, removed, or fabricated from the host.
-        Its purpose is to allow a UML to appear to be a physical machine
-        by removing or changing anything in /proc which gives away the
-        identity of a UML.
+          hppfs (HoneyPot ProcFS) is a filesystem which allows UML /proc
+          entries to be overridden, removed, or fabricated from the host.
+          Its purpose is to allow a UML to appear to be a physical machine
+          by removing or changing anything in /proc which gives away the
+          identity of a UML.
 
-        See <http://user-mode-linux.sf.net/hppfs.html> for more information.
+          See <http://user-mode-linux.sf.net/hppfs.html> for more information.
 
-        You only need this if you are setting up a UML honeypot.  Otherwise,
-        it is safe to say 'N' here.
+          You only need this if you are setting up a UML honeypot.  Otherwise,
+          it is safe to say 'N' here.
 
 config MCONSOLE
         bool "Management console"
         default y
         help
-        The user mode linux management console is a low-level interface to
-        the kernel, somewhat like the i386 SysRq interface.  Since there is
-        a full-blown operating system running under every user mode linux
-        instance, there is much greater flexibility possible than with the
-        SysRq mechanism.
+          The user mode linux management console is a low-level interface to
+          the kernel, somewhat like the i386 SysRq interface.  Since there is
+          a full-blown operating system running under every user mode linux
+          instance, there is much greater flexibility possible than with the
+          SysRq mechanism.
 
-        If you answer 'Y' to this option, to use this feature, you need the
-        mconsole client (called uml_mconsole) which is present in CVS in
-        2.4.5-9um and later (path /tools/mconsole), and is also in the
-        distribution RPM package in 2.4.6 and later.
+          If you answer 'Y' to this option, to use this feature, you need the
+          mconsole client (called uml_mconsole) which is present in CVS in
+          2.4.5-9um and later (path /tools/mconsole), and is also in the
+          distribution RPM package in 2.4.6 and later.
 
-        It is safe to say 'Y' here.
+          It is safe to say 'Y' here.
 
 config MAGIC_SYSRQ
         bool "Magic SysRq key"
         depends on MCONSOLE
-        ---help---
-        If you say Y here, you will have some control over the system even
-        if the system crashes for example during kernel debugging (e.g., you
-        will be able to flush the buffer cache to disk, reboot the system
-        immediately or dump some status information). A key for each of the
-        possible requests is provided.
+        help
+          If you say Y here, you will have some control over the system even
+          if the system crashes for example during kernel debugging (e.g., you
+          will be able to flush the buffer cache to disk, reboot the system
+          immediately or dump some status information). A key for each of the
+          possible requests is provided.
 
-        This is the feature normally accomplished by pressing a key
-        while holding SysRq (Alt+PrintScreen).
+          This is the feature normally accomplished by pressing a key
+          while holding SysRq (Alt+PrintScreen).
 
-        On UML, this is accomplished by sending a "sysrq" command with
-        mconsole, followed by the letter for the requested command.
+          On UML, this is accomplished by sending a "sysrq" command with
+          mconsole, followed by the letter for the requested command.
 
-        The keys are documented in <file:Documentation/sysrq.txt>. Don't say Y
-        unless you really know what this hack does.
+          The keys are documented in <file:Documentation/sysrq.txt>. Don't say Y
+          unless you really know what this hack does.
 
 config SMP
         bool "Symmetric multi-processing support (EXPERIMENTAL)"
         default n
         #SMP_BROKEN is for x86_64.
-        depends on MODE_TT && EXPERIMENTAL && (!SMP_BROKEN || (BROKEN && SMP_BROKEN))
+        depends on EXPERIMENTAL && (!SMP_BROKEN || (BROKEN && SMP_BROKEN))
         help
-        This option enables UML SMP support.
-        It is NOT related to having a real SMP box. Not directly, at least.
+          This option enables UML SMP support.
+          It is NOT related to having a real SMP box. Not directly, at least.
 
-        UML implements virtual SMP by allowing as many processes to run
-        simultaneously on the host as there are virtual processors configured.
+          UML implements virtual SMP by allowing as many processes to run
+          simultaneously on the host as there are virtual processors configured.
 
-        Obviously, if the host is a uniprocessor, those processes will
-        timeshare, but, inside UML, will appear to be running simultaneously.
-        If the host is a multiprocessor, then UML processes may run
-        simultaneously, depending on the host scheduler.
+          Obviously, if the host is a uniprocessor, those processes will
+          timeshare, but, inside UML, will appear to be running simultaneously.
+          If the host is a multiprocessor, then UML processes may run
+          simultaneously, depending on the host scheduler.
 
-        This, however, is supported only in TT mode. So, if you use the SKAS
-        patch on your host, switching to TT mode and enabling SMP usually gives
-        you worse performances.
-        Also, since the support for SMP has been under-developed, there could
-        be some bugs being exposed by enabling SMP.
+          This, however, is supported only in TT mode. So, if you use the SKAS
+          patch on your host, switching to TT mode and enabling SMP usually
+          gives you worse performances.
+          Also, since the support for SMP has been under-developed, there could
+          be some bugs being exposed by enabling SMP.
 
-        If you don't know what to do, say N.
+          If you don't know what to do, say N.
 
 config NR_CPUS
         int "Maximum number of CPUs (2-32)"
@@ -251,29 +221,24 @@ config NEST_LEVEL
         int "Nesting level"
         default "0"
         help
-        This is set to the number of layers of UMLs that this UML will be run
-        in.  Normally, this is zero, meaning that it will run directly on the
-        host.  Setting it to one will build a UML that can run inside a UML
-        that is running on the host.  Generally, if you intend this UML to run
-        inside another UML, set CONFIG_NEST_LEVEL to one more than the host
-        UML.
-
-        Note that if the hosting UML has its CONFIG_KERNEL_HALF_GIGS set to
-        greater than one, then the guest UML should have its CONFIG_NEST_LEVEL
-        set to the host's CONFIG_NEST_LEVEL + CONFIG_KERNEL_HALF_GIGS.
-        Only change this if you are running nested UMLs.
+          This is set to the number of layers of UMLs that this UML will be run
+          in.  Normally, this is zero, meaning that it will run directly on the
+          host.  Setting it to one will build a UML that can run inside a UML
+          that is running on the host.  Generally, if you intend this UML to run
+          inside another UML, set CONFIG_NEST_LEVEL to one more than the host
+          UML.
 
 config HIGHMEM
         bool "Highmem support (EXPERIMENTAL)"
         depends on !64BIT && EXPERIMENTAL
         default n
         help
-        This was used to allow UML to run with big amounts of memory.
-        Currently it is unstable, so if unsure say N.
+          This was used to allow UML to run with big amounts of memory.
+          Currently it is unstable, so if unsure say N.
 
-        To use big amounts of memory, it is recommended to disable TT mode (i.e.
-        CONFIG_MODE_TT) and enable static linking (i.e. CONFIG_STATIC_LINK) -
-        this should allow the guest to use up to 2.75G of memory.
+          To use big amounts of memory, it is recommended enable static
+          linking (i.e. CONFIG_STATIC_LINK) - this should allow the
+          guest to use up to 2.75G of memory.
 
 config KERNEL_STACK_ORDER
         int "Kernel stack size order"
@@ -281,20 +246,9 @@ config KERNEL_STACK_ORDER
         range 1 10 if 64BIT
         default 0 if !64BIT
         help
-        This option determines the size of UML kernel stacks.  They will
-        be 1 << order pages.  The default is OK unless you're running Valgrind
-        on UML, in which case, set this to 3.
-
-config UML_REAL_TIME_CLOCK
-        bool "Real-time Clock"
-        default y
-        help
-        This option makes UML time deltas match wall clock deltas.  This should
-        normally be enabled.  The exception would be if you are debugging with
-        UML and spend long times with UML stopped at a breakpoint.  In this
-        case, when UML is restarted, it will call the timer enough times to make
-        up for the time spent at the breakpoint.  This could result in a
-        noticeable lag.  If this is a problem, then disable this option.
+          This option determines the size of UML kernel stacks.  They will
+          be 1 << order pages.  The default is OK unless you're running Valgrind
+          on UML, in which case, set this to 3.
 
 endmenu