Unable to include xen/sched.h

Unable to include xen/sched.h

[ashutosh mehra]

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Hi,

I'm unable to include xen/sched.h in my kernel module, although
xen/xenbus.h, etc work fine. I get an error - xen/sched.h - no such file. I
need to access the for_each_domain macro. Please help!

Thanks,
Ashutosh

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Re: Unable to include xen/sched.h

[Akio Takebe]

Hi,

>I'm unable to include xen/sched.h in my kernel module, although
>xen/xenbus.h, etc work fine. I get an error - xen/sched.h - no such file. I
>need to access the for_each_domain macro. Please help!
The macro and header file are for hypervisor.
Guest kernel cannot use the macro and domain_list.

Best Regards,

Akio Takebe

Re: Unable to include xen/sched.h

[ashutosh mehra]

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Thanks Akio for this information.
But is there any way to get domain id of each active domain in guest kernel?

Thanks in advance.
Ashutosh


On Nov 12, 2007 1:42 PM, Akio Takebe <takebe_akio@jp.fujitsu.com> wrote:

> Hi,
>
> >I'm unable to include xen/sched.h in my kernel module, although
> >xen/xenbus.h, etc work fine. I get an error - xen/sched.h - no such file.
> I
> >need to access the for_each_domain macro. Please help!
> The macro and header file are for hypervisor.
> Guest kernel cannot use the macro and domain_list.
>
> Best Regards,
>
> Akio Takebe
>
>

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Re: Unable to include xen/sched.h

[Akio Takebe]

Hi,

>But is there any way to get domain id of each active domain in guest kernel?
>
Is your module for dom0?
If dom0, you can use hypercall of XEN_SYSCTL_getdomaininfolist.
But If other, you cannot access it.

Best Regards,

Akio Takebe

Re: Unable to include xen/sched.h

[ashutosh mehra]

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Hi,

I tried including public/sysctl.h for  XEN_SYSCTL_getdomaininfolist, but  I
get an error: public/sysctl.h: No such file or directory.

Even if the above problem is solved, how will I get the list/domainIds of
all the domUs running without using for_each_domain defined in xen/sched.h?
I get the same error for this file as well. And what should be the
parameters to make for this? Currently my Makefile is obj-m :=
mymodule.oand I'm running make with the parameters make -C
/lib/modules/2.6.18-xen/build/ modules M=`pwd` V=1


This is the output from make:


make: Entering directory
`/usr/local/src/xen-3.1.0-src/build-linux-2.6.18-xen_x86_32'
make -C /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen
O=/usr/local/src/xen-3.1.0-src/build-linux-2.6.18-xen_x86_32 modules
make -C /usr/local/src/xen-3.1.0-src/build-linux-2.6.18-xen_x86_32 \
       KBUILD_SRC=/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen \
       KBUILD_EXTMOD="/home/ashu/Desktop/xenmodule" -f
/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/Makefile modules
test -e include/linux/autoconf.h -a -e include/config/auto.conf || (
        \
       echo;                                                           \
       echo "  ERROR: Kernel configuration is invalid.";               \
       echo "         include/linux/autoconf.h or
include/config/auto.conf are missing.";      \
       echo "         Run 'make oldconfig && make prepare' on kernel
src to fix it.";  \
       echo;                                                           \
       /bin/false)
mkdir -p /home/ashu/Desktop/xenmodule/.tmp_versions
rm -f /home/ashu/Desktop/xenmodule/.tmp_versions/*
make -f /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/scripts/Makefile.build
obj=/home/ashu/Desktop/xenmodule
 gcc -m32 -Wp,-MD,/home/ashu/Desktop/xenmodule/.mymodule.o.d
-nostdinc -isystem /usr/lib/gcc/i486-linux-gnu/4.1.2/include
-Iinclude2/asm/mach-xen -D__KERNEL__ -Iinclude -Iinclude2
-I/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include -include
include/linux/autoconf.h -D__XEN_INTERFACE_VERSION__=0x00030205
-I/home/ashu/Desktop/xenmodule -Wall -Wundef -Wstrict-prototypes
-Wno-trigraphs -fno-strict-aliasing -fno-common -O2 -pipe -msoft-float
-mpreferred-stack-boundary=2 -march=i686 -mtune=generic -mregparm=3
-ffreestanding -I/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen
/include/asm-i386/mach-xen
-Iinclude/asm-i386/mach-xen
-I/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen
/include/asm-i386/mach-default
-Iinclude/asm-i386/mach-default -fomit-frame-pointer
-fno-stack-protector -Wdeclaration-after-statement -Wno-pointer-sign
-DMODULE -D"KBUILD_STR(s)=#s"
-D"KBUILD_BASENAME=KBUILD_STR(mymodule)"
-D"KBUILD_MODNAME=KBUILD_STR(mymodule)" -c -o
/home/ashu/Desktop/xenmodule/.tmp_mymodule.o
/home/ashu/Desktop/xenmodule/mymodule.c
/home/ashu/Desktop/xenmodule/mymodule.c:15:27: error:
public/sysctl.h: No such file or directory
/home/ashu/Desktop/xenmodule/mymodule.c:16:23: error:
xen/sched.h: No such file or directory
make[3]: *** [/home/ashu/Desktop/xenmodule/mymodule.o] Error 1
make[2]: *** [_module_/home/ashu/Desktop/xenmodule] Error 2
make[1]: *** [modules] Error 2
make: *** [modules] Error 2
make: Leaving directory
`/usr/local/src/xen-3.1.0-src/build-linux-2.6.18-xen_x86_32'





Thanks,
Ashutosh



On Nov 13, 2007 1:35 AM, Akio Takebe <takebe_akio@jp.fujitsu.com> wrote:

> Hi,
>
> >But is there any way to get domain id of each active domain in guest
> kernel?
> >
> Is your module for dom0?
> If dom0, you can use hypercall of XEN_SYSCTL_getdomaininfolist.
> But If other, you cannot access it.
>
> Best Regards,
>
> Akio Takebe
>
>

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Re: Unable to include xen/sched.h

[ashutosh mehra]

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Any answers to this?

On Nov 13, 2007 3:37 PM, ashutosh mehra <ashutosh.xen@gmail.com> wrote:

> Hi,
>
> I tried including public/sysctl.h for  XEN_SYSCTL_getdomaininfolist, but
> I get an error: public/sysctl.h: No such file or directory.
>
> Even if the above problem is solved, how will I get the list/domainIds of
> all the domUs running without using for_each_domain defined in xen/sched.h?
> I get the same error for this file as well. And what should be the
> parameters to make for this? Currently my Makefile is obj-m := mymodule.oand I'm running make with the parameters make -C
> /lib/modules/2.6.18-xen/build/ modules M=`pwd` V=1
>
>
> This is the output from make:
>
>
> make: Entering directory
> `/usr/local/src/xen-3.1.0-src /build-linux-2.6.18-xen_x86_32'
> make -C /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen
> O=/usr/local/src/xen-3.1.0-src/build-linux-2.6.18-xen_x86_32 modules
> make -C /usr/local/src/xen-3.1.0-src/build-linux-2.6.18-xen_x86_32 \
>        KBUILD_SRC=/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen \
>        KBUILD_EXTMOD="/home/ashu/Desktop/xenmodule" -f
> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/Makefile modules
> test -e include/linux/autoconf.h -a -e include/config/auto.conf || (
>         \
>        echo;                                                           \
>        echo "  ERROR: Kernel configuration is invalid.";               \
>        echo "         include/linux/autoconf.h or
> include/config/auto.conf are missing.";      \
>        echo "         Run 'make oldconfig && make prepare' on kernel
> src to fix it.";  \
>        echo;                                                           \
>        /bin/false)
> mkdir -p /home/ashu/Desktop/xenmodule/.tmp_versions
> rm -f /home/ashu/Desktop/xenmodule/.tmp_versions/*
> make -f /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen
> /scripts/Makefile.build
> obj=/home/ashu/Desktop/xenmodule
>  gcc -m32 -Wp,-MD,/home/ashu/Desktop/xenmodule/.mymodule.o.d
> -nostdinc -isystem /usr/lib/gcc/i486-linux-gnu/4.1.2/include
> -Iinclude2/asm/mach-xen -D__KERNEL__ -Iinclude -Iinclude2
> -I/usr/local/src/xen-3.1.0-src /linux-2.6.18-xen/include -include
> include/linux/autoconf.h -D__XEN_INTERFACE_VERSION__=0x00030205
> -I/home/ashu/Desktop/xenmodule -Wall -Wundef -Wstrict-prototypes
> -Wno-trigraphs -fno-strict-aliasing -fno-common -O2 -pipe -msoft-float
> -mpreferred-stack-boundary=2 -march=i686 -mtune=generic -mregparm=3
> -ffreestanding -I/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen
> /include/asm-i386/mach-xen
> -Iinclude/asm-i386/mach-xen
> -I/usr/local/src/xen-3.1.0-src /linux-2.6.18-xen
> /include/asm-i386/mach-default
> -Iinclude/asm-i386/mach-default -fomit-frame-pointer
> -fno-stack-protector -Wdeclaration-after-statement -Wno-pointer-sign
> -DMODULE -D"KBUILD_STR(s)=#s"
> -D"KBUILD_BASENAME=KBUILD_STR(mymodule)"
> -D"KBUILD_MODNAME=KBUILD_STR(mymodule)" -c -o
> /home/ashu/Desktop/xenmodule/.tmp_mymodule.o
> /home/ashu/Desktop/xenmodule/mymodule.c
> /home/ashu/Desktop/xenmodule/mymodule.c:15:27: error:
> public/sysctl.h: No such file or directory
> /home/ashu/Desktop/xenmodule/mymodule.c:16:23: error:
> xen/sched.h: No such file or directory
> make[3]: *** [/home/ashu/Desktop/xenmodule/mymodule.o] Error 1
> make[2]: *** [_module_/home/ashu/Desktop/xenmodule] Error 2
> make[1]: *** [modules] Error 2
> make: *** [modules] Error 2
> make: Leaving directory
> `/usr/local/src/xen-3.1.0-src/build-linux-2.6.18-xen_x86_32'
>
>
>
>
>
> Thanks,
> Ashutosh
>
>
>
>
> On Nov 13, 2007 1:35 AM, Akio Takebe <takebe_akio@jp.fujitsu.com> wrote:
>
> > Hi,
> >
> > >But is there any way to get domain id of each active domain in guest
> > kernel?
> > >
> > Is your module for dom0?
> > If dom0, you can use hypercall of XEN_SYSCTL_getdomaininfolist.
> > But If other, you cannot access it.
> >
> > Best Regards,
> >
> > Akio Takebe
> >
> >
>

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Re: Unable to include xen/sched.h

[Atsushi SAKAI]

try using 
include/xen/interface/sysctl.h
on PV kernel.

Thanks
Atsushi SAKAI



"ashutosh mehra" <ashutosh.xen@gmail.com> wrote:

> Any answers to this?
> 
> On Nov 13, 2007 3:37 PM, ashutosh mehra <ashutosh.xen@gmail.com> wrote:
> 
> > Hi,
> >
> > I tried including public/sysctl.h for  XEN_SYSCTL_getdomaininfolist, but
> > I get an error: public/sysctl.h: No such file or directory.
> >
> > Even if the above problem is solved, how will I get the list/domainIds of
> > all the domUs running without using for_each_domain defined in xen/sched.h?
> > I get the same error for this file as well. And what should be the
> > parameters to make for this? Currently my Makefile is obj-m := mymodule.oand I'm running make with the parameters make -C
> > /lib/modules/2.6.18-xen/build/ modules M=`pwd` V=1
> >
> >
> > This is the output from make:
> >
> >
> > make: Entering directory
> > `/usr/local/src/xen-3.1.0-src /build-linux-2.6.18-xen_x86_32'
> > make -C /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen
> > O=/usr/local/src/xen-3.1.0-src/build-linux-2.6.18-xen_x86_32 modules
> > make -C /usr/local/src/xen-3.1.0-src/build-linux-2.6.18-xen_x86_32 \
> >        KBUILD_SRC=/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen \
> >        KBUILD_EXTMOD="/home/ashu/Desktop/xenmodule" -f
> > /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/Makefile modules
> > test -e include/linux/autoconf.h -a -e include/config/auto.conf || (
> >         \
> >        echo;                                                           \
> >        echo "  ERROR: Kernel configuration is invalid.";               \
> >        echo "         include/linux/autoconf.h or
> > include/config/auto.conf are missing.";      \
> >        echo "         Run 'make oldconfig && make prepare' on kernel
> > src to fix it.";  \
> >        echo;                                                           \
> >        /bin/false)
> > mkdir -p /home/ashu/Desktop/xenmodule/.tmp_versions
> > rm -f /home/ashu/Desktop/xenmodule/.tmp_versions/*
> > make -f /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen
> > /scripts/Makefile.build
> > obj=/home/ashu/Desktop/xenmodule
> >  gcc -m32 -Wp,-MD,/home/ashu/Desktop/xenmodule/.mymodule.o.d
> > -nostdinc -isystem /usr/lib/gcc/i486-linux-gnu/4.1.2/include
> > -Iinclude2/asm/mach-xen -D__KERNEL__ -Iinclude -Iinclude2
> > -I/usr/local/src/xen-3.1.0-src /linux-2.6.18-xen/include -include
> > include/linux/autoconf.h -D__XEN_INTERFACE_VERSION__=0x00030205
> > -I/home/ashu/Desktop/xenmodule -Wall -Wundef -Wstrict-prototypes
> > -Wno-trigraphs -fno-strict-aliasing -fno-common -O2 -pipe -msoft-float
> > -mpreferred-stack-boundary=2 -march=i686 -mtune=generic -mregparm=3
> > -ffreestanding -I/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen
> > /include/asm-i386/mach-xen
> > -Iinclude/asm-i386/mach-xen
> > -I/usr/local/src/xen-3.1.0-src /linux-2.6.18-xen
> > /include/asm-i386/mach-default
> > -Iinclude/asm-i386/mach-default -fomit-frame-pointer
> > -fno-stack-protector -Wdeclaration-after-statement -Wno-pointer-sign
> > -DMODULE -D"KBUILD_STR(s)=#s"
> > -D"KBUILD_BASENAME=KBUILD_STR(mymodule)"
> > -D"KBUILD_MODNAME=KBUILD_STR(mymodule)" -c -o
> > /home/ashu/Desktop/xenmodule/.tmp_mymodule.o
> > /home/ashu/Desktop/xenmodule/mymodule.c
> > /home/ashu/Desktop/xenmodule/mymodule.c:15:27: error:
> > public/sysctl.h: No such file or directory
> > /home/ashu/Desktop/xenmodule/mymodule.c:16:23: error:
> > xen/sched.h: No such file or directory
> > make[3]: *** [/home/ashu/Desktop/xenmodule/mymodule.o] Error 1
> > make[2]: *** [_module_/home/ashu/Desktop/xenmodule] Error 2
> > make[1]: *** [modules] Error 2
> > make: *** [modules] Error 2
> > make: Leaving directory
> > `/usr/local/src/xen-3.1.0-src/build-linux-2.6.18-xen_x86_32'
> >
> >
> >
> >
> >
> > Thanks,
> > Ashutosh
> >
> >
> >
> >
> > On Nov 13, 2007 1:35 AM, Akio Takebe <takebe_akio@jp.fujitsu.com> wrote:
> >
> > > Hi,
> > >
> > > >But is there any way to get domain id of each active domain in guest
> > > kernel?
> > > >
> > > Is your module for dom0?
> > > If dom0, you can use hypercall of XEN_SYSCTL_getdomaininfolist.
> > > But If other, you cannot access it.
> > >
> > > Best Regards,
> > >
> > > Akio Takebe
> > >
> > >
> >

Re: Unable to include xen/sched.h

[Keir Fraser]

But it's not particularly recommended to use domctl or sysctl interfaces in
the dom0 kernel. Those interfaces can change. This might be acceptable for
you however, depending on your purpose.

 -- Keir

On 14/11/07 09:34, "Atsushi SAKAI" <sakaia@jp.fujitsu.com> wrote:

> try using 
> include/xen/interface/sysctl.h
> on PV kernel.
> 
> Thanks
> Atsushi SAKAI
> 
> 
> 
> "ashutosh mehra" <ashutosh.xen@gmail.com> wrote:
> 
>> Any answers to this?
>> 
>> On Nov 13, 2007 3:37 PM, ashutosh mehra <ashutosh.xen@gmail.com> wrote:
>> 
>>> Hi,
>>> 
>>> I tried including public/sysctl.h for  XEN_SYSCTL_getdomaininfolist, but
>>> I get an error: public/sysctl.h: No such file or directory.
>>> 
>>> Even if the above problem is solved, how will I get the list/domainIds of
>>> all the domUs running without using for_each_domain defined in xen/sched.h?
>>> I get the same error for this file as well. And what should be the
>>> parameters to make for this? Currently my Makefile is obj-m := mymodule.oand
>>> I'm running make with the parameters make -C
>>> /lib/modules/2.6.18-xen/build/ modules M=`pwd` V=1
>>> 
>>> 
>>> This is the output from make:
>>> 
>>> 
>>> make: Entering directory
>>> `/usr/local/src/xen-3.1.0-src /build-linux-2.6.18-xen_x86_32'
>>> make -C /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen
>>> O=/usr/local/src/xen-3.1.0-src/build-linux-2.6.18-xen_x86_32 modules
>>> make -C /usr/local/src/xen-3.1.0-src/build-linux-2.6.18-xen_x86_32 \
>>>        KBUILD_SRC=/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen \
>>>        KBUILD_EXTMOD="/home/ashu/Desktop/xenmodule" -f
>>> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/Makefile modules
>>> test -e include/linux/autoconf.h -a -e include/config/auto.conf || (
>>>         \
>>>        echo;                                                           \
>>>        echo "  ERROR: Kernel configuration is invalid.";               \
>>>        echo "         include/linux/autoconf.h or
>>> include/config/auto.conf are missing.";      \
>>>        echo "         Run 'make oldconfig && make prepare' on kernel
>>> src to fix it.";  \
>>>        echo;                                                           \
>>>        /bin/false)
>>> mkdir -p /home/ashu/Desktop/xenmodule/.tmp_versions
>>> rm -f /home/ashu/Desktop/xenmodule/.tmp_versions/*
>>> make -f /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen
>>> /scripts/Makefile.build
>>> obj=/home/ashu/Desktop/xenmodule
>>>  gcc -m32 -Wp,-MD,/home/ashu/Desktop/xenmodule/.mymodule.o.d
>>> -nostdinc -isystem /usr/lib/gcc/i486-linux-gnu/4.1.2/include
>>> -Iinclude2/asm/mach-xen -D__KERNEL__ -Iinclude -Iinclude2
>>> -I/usr/local/src/xen-3.1.0-src /linux-2.6.18-xen/include -include
>>> include/linux/autoconf.h -D__XEN_INTERFACE_VERSION__=0x00030205
>>> -I/home/ashu/Desktop/xenmodule -Wall -Wundef -Wstrict-prototypes
>>> -Wno-trigraphs -fno-strict-aliasing -fno-common -O2 -pipe -msoft-float
>>> -mpreferred-stack-boundary=2 -march=i686 -mtune=generic -mregparm=3
>>> -ffreestanding -I/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen
>>> /include/asm-i386/mach-xen
>>> -Iinclude/asm-i386/mach-xen
>>> -I/usr/local/src/xen-3.1.0-src /linux-2.6.18-xen
>>> /include/asm-i386/mach-default
>>> -Iinclude/asm-i386/mach-default -fomit-frame-pointer
>>> -fno-stack-protector -Wdeclaration-after-statement -Wno-pointer-sign
>>> -DMODULE -D"KBUILD_STR(s)=#s"
>>> -D"KBUILD_BASENAME=KBUILD_STR(mymodule)"
>>> -D"KBUILD_MODNAME=KBUILD_STR(mymodule)" -c -o
>>> /home/ashu/Desktop/xenmodule/.tmp_mymodule.o
>>> /home/ashu/Desktop/xenmodule/mymodule.c
>>> /home/ashu/Desktop/xenmodule/mymodule.c:15:27: error:
>>> public/sysctl.h: No such file or directory
>>> /home/ashu/Desktop/xenmodule/mymodule.c:16:23: error:
>>> xen/sched.h: No such file or directory
>>> make[3]: *** [/home/ashu/Desktop/xenmodule/mymodule.o] Error 1
>>> make[2]: *** [_module_/home/ashu/Desktop/xenmodule] Error 2
>>> make[1]: *** [modules] Error 2
>>> make: *** [modules] Error 2
>>> make: Leaving directory
>>> `/usr/local/src/xen-3.1.0-src/build-linux-2.6.18-xen_x86_32'
>>> 
>>> 
>>> 
>>> 
>>> 
>>> Thanks,
>>> Ashutosh
>>> 
>>> 
>>> 
>>> 
>>> On Nov 13, 2007 1:35 AM, Akio Takebe <takebe_akio@jp.fujitsu.com> wrote:
>>> 
>>>> Hi,
>>>> 
>>>>> But is there any way to get domain id of each active domain in guest
>>>> kernel?
>>>>> 
>>>> Is your module for dom0?
>>>> If dom0, you can use hypercall of XEN_SYSCTL_getdomaininfolist.
>>>> But If other, you cannot access it.
>>>> 
>>>> Best Regards,
>>>> 
>>>> Akio Takebe
>>>> 
>>>> 
>>> 
> 
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel

Re: Unable to include xen/sched.h

[ashutosh mehra]

[-- Attachment #1.1: Type: text/plain, Size: 5272 bytes --]

I tried #include<xen/interface/sysctl.h> but I get an error: #error "domctl
operations are intended for use by node control tools only"

Keir, how do I add a watch on an entire path, e.g. /local/domain/? More
importantly, how can I get the list of domains/domainIds of the currently
running domains in a module running in dom0 kernel?? Please help, I'm
looking for an answer to this since quite a few days!

Thanks,
Ashutosh

On Nov 14, 2007 4:41 PM, Keir Fraser <Keir.Fraser@cl.cam.ac.uk> wrote:

> But it's not particularly recommended to use domctl or sysctl interfaces
> in
> the dom0 kernel. Those interfaces can change. This might be acceptable for
> you however, depending on your purpose.
>
>  -- Keir
>
> On 14/11/07 09:34, "Atsushi SAKAI" <sakaia@jp.fujitsu.com> wrote:
>
> > try using
> > include/xen/interface/sysctl.h
> > on PV kernel.
> >
> > Thanks
> > Atsushi SAKAI
> >
> >
> >
> > "ashutosh mehra" <ashutosh.xen@gmail.com> wrote:
> >
> >> Any answers to this?
> >>
> >> On Nov 13, 2007 3:37 PM, ashutosh mehra <ashutosh.xen@gmail.com> wrote:
> >>
> >>> Hi,
> >>>
> >>> I tried including public/sysctl.h for  XEN_SYSCTL_getdomaininfolist,
> but
> >>> I get an error: public/sysctl.h: No such file or directory.
> >>>
> >>> Even if the above problem is solved, how will I get the list/domainIds
> of
> >>> all the domUs running without using for_each_domain defined in
> xen/sched.h?
> >>> I get the same error for this file as well. And what should be the
> >>> parameters to make for this? Currently my Makefile is obj-m :=
> mymodule.oand
> >>> I'm running make with the parameters make -C
> >>> /lib/modules/2.6.18-xen/build/ modules M=`pwd` V=1
> >>>
> >>>
> >>> This is the output from make:
> >>>
> >>>
> >>> make: Entering directory
> >>> `/usr/local/src/xen-3.1.0-src /build-linux-2.6.18-xen_x86_32'
> >>> make -C /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen
> >>> O=/usr/local/src/xen-3.1.0-src/build-linux-2.6.18-xen_x86_32 modules
> >>> make -C /usr/local/src/xen-3.1.0-src/build-linux-2.6.18-xen_x86_32 \
> >>>        KBUILD_SRC=/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen \
> >>>        KBUILD_EXTMOD="/home/ashu/Desktop/xenmodule" -f
> >>> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/Makefile modules
> >>> test -e include/linux/autoconf.h -a -e include/config/auto.conf || (
> >>>         \
> >>>        echo;
> \
> >>>        echo "  ERROR: Kernel configuration is invalid.";
> \
> >>>        echo "         include/linux/autoconf.h or
> >>> include/config/auto.conf are missing.";      \
> >>>        echo "         Run 'make oldconfig && make prepare' on kernel
> >>> src to fix it.";  \
> >>>        echo;
> \
> >>>        /bin/false)
> >>> mkdir -p /home/ashu/Desktop/xenmodule/.tmp_versions
> >>> rm -f /home/ashu/Desktop/xenmodule/.tmp_versions/*
> >>> make -f /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen
> >>> /scripts/Makefile.build
> >>> obj=/home/ashu/Desktop/xenmodule
> >>>  gcc -m32 -Wp,-MD,/home/ashu/Desktop/xenmodule/.mymodule.o.d
> >>> -nostdinc -isystem /usr/lib/gcc/i486-linux-gnu/4.1.2/include
> >>> -Iinclude2/asm/mach-xen -D__KERNEL__ -Iinclude -Iinclude2
> >>> -I/usr/local/src/xen-3.1.0-src /linux-2.6.18-xen/include -include
> >>> include/linux/autoconf.h -D__XEN_INTERFACE_VERSION__=0x00030205
> >>> -I/home/ashu/Desktop/xenmodule -Wall -Wundef -Wstrict-prototypes
> >>> -Wno-trigraphs -fno-strict-aliasing -fno-common -O2 -pipe -msoft-float
> >>> -mpreferred-stack-boundary=2 -march=i686 -mtune=generic -mregparm=3
> >>> -ffreestanding -I/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen
> >>> /include/asm-i386/mach-xen
> >>> -Iinclude/asm-i386/mach-xen
> >>> -I/usr/local/src/xen-3.1.0-src /linux-2.6.18-xen
> >>> /include/asm-i386/mach-default
> >>> -Iinclude/asm-i386/mach-default -fomit-frame-pointer
> >>> -fno-stack-protector -Wdeclaration-after-statement -Wno-pointer-sign
> >>> -DMODULE -D"KBUILD_STR(s)=#s"
> >>> -D"KBUILD_BASENAME=KBUILD_STR(mymodule)"
> >>> -D"KBUILD_MODNAME=KBUILD_STR(mymodule)" -c -o
> >>> /home/ashu/Desktop/xenmodule/.tmp_mymodule.o
> >>> /home/ashu/Desktop/xenmodule/mymodule.c
> >>> /home/ashu/Desktop/xenmodule/mymodule.c:15:27: error:
> >>> public/sysctl.h: No such file or directory
> >>> /home/ashu/Desktop/xenmodule/mymodule.c:16:23: error:
> >>> xen/sched.h: No such file or directory
> >>> make[3]: *** [/home/ashu/Desktop/xenmodule/mymodule.o] Error 1
> >>> make[2]: *** [_module_/home/ashu/Desktop/xenmodule] Error 2
> >>> make[1]: *** [modules] Error 2
> >>> make: *** [modules] Error 2
> >>> make: Leaving directory
> >>> `/usr/local/src/xen-3.1.0-src/build-linux-2.6.18-xen_x86_32'
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> Thanks,
> >>> Ashutosh
> >>>
> >>>
> >>>
> >>>
> >>> On Nov 13, 2007 1:35 AM, Akio Takebe <takebe_akio@jp.fujitsu.com>
> wrote:
> >>>
> >>>> Hi,
> >>>>
> >>>>> But is there any way to get domain id of each active domain in guest
> >>>> kernel?
> >>>>>
> >>>> Is your module for dom0?
> >>>> If dom0, you can use hypercall of XEN_SYSCTL_getdomaininfolist.
> >>>> But If other, you cannot access it.
> >>>>
> >>>> Best Regards,
> >>>>
> >>>> Akio Takebe
> >>>>
> >>>>
> >>>
> >
> >
> >
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@lists.xensource.com
> > http://lists.xensource.com/xen-devel
>
>
>

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Re: Unable to include xen/sched.h

[Keir Fraser]

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On 14/11/07 11:21, "ashutosh mehra" <ashutosh.xen@gmail.com> wrote:

> I tried #include<xen/interface/sysctl.h> but I get an error: #error "domctl
> operations are intended for use by node control tools only"
> 
> Keir, how do I add a watch on an entire path, e.g. /local/domain/? More
> importantly, how can I get the list of domains/domainIds of the currently
> running domains in a module running in dom0 kernel?? Please help, I'm looking
> for an answer to this since quite a few days!

You can add a watch on that entire path from dom0, no problem. As for
getting a list of all domains, you can only do that with sysctl. If you
really need it then #define __XEN_TOOLS__ before including sysctl.h.

 -- Keir



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Re: Unable to include xen/sched.h

[ashutosh mehra]

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Hi,
I tried including sysctl.h using
#ifndef __XEN_TOOLS__
#define __XEN_TOOLS__ 1
#endif
#include <xen/interface/sysctl.h>

 but on compilation I get following errors:

In file included from /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen
/include/xen/interface/sysctl.h:35,
                 from /home/ashu/Desktop/xenmodule/mymodule.c:19:
/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:40:
error: expected specifier-qualifier-list before XEN_GUEST_HANDLE_64
/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:95:
error: expected specifier-qualifier-list before uint64_aligned_t
/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:112:
error: expected specifier-qualifier-list before uint64_aligned_t
/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:138:
error: expected specifier-qualifier-list before uint64_aligned_t
/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:150:
error: expected specifier-qualifier-list before uint64_aligned_t
/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:226:
error: expected specifier-qualifier-list before XEN_GUEST_HANDLE_64
/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:237:
error: expected specifier-qualifier-list before uint64_aligned_t
/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:247:
error: expected specifier-qualifier-list before XEN_GUEST_HANDLE_64
/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:261:
error: expected specifier-qualifier-list before uint64_aligned_t
/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:299:
error: expected specifier-qualifier-list before uint64_aligned_t
/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:342:
error: expected specifier-qualifier-list before uint64_aligned_t
/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:362:
error: expected specifier-qualifier-list before uint64_aligned_t
/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:374:
error: expected specifier-qualifier-list before uint64_aligned_t
/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:397:
error: expected specifier-qualifier-list before XEN_GUEST_HANDLE_64
In file included from /home/ashu/Desktop/xenmodule/mymodule.c:19:
/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/sysctl.h:46:
error: expected specifier-qualifier-list before XEN_GUEST_HANDLE_64
/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/sysctl.h:68:
error: expected specifier-qualifier-list before uint64_aligned_t
/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/sysctl.h:84:
error: expected specifier-qualifier-list before uint64_aligned_t
/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/sysctl.h:124:
error: expected specifier-qualifier-list before XEN_GUEST_HANDLE_64
/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/sysctl.h:136:
error: expected specifier-qualifier-list before XEN_GUEST_HANDLE_64
/usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/sysctl.h:149:
error: expected specifier-qualifier-list before XEN_GUEST_HANDLE_64

Any solutions for this problem?

One more question...
How to add a watch on entire tree? I tried using register_xenbus_watch() to
add a watch on "local/domain" but it is not working.
And...
what does this function do?
char **xenbus_directory(struct xenbus_transaction t,
            const char *dir, const char *node, unsigned int *num);

Thanks,
Ashutosh


On Nov 14, 2007 4:54 PM, Keir Fraser <Keir.Fraser@cl.cam.ac.uk> wrote:

>
>
>
> On 14/11/07 11:21, "ashutosh mehra" <ashutosh.xen@gmail.com> wrote:
>
> I tried #include<xen/interface/sysctl.h> but I get an error: #error
> "domctl operations are intended for use by node control tools only"
>
> Keir, how do I add a watch on an entire path, e.g. /local/domain/? More
> importantly, how can I get the list of domains/domainIds of the currently
> running domains in a module running in dom0 kernel?? Please help, I'm
> looking for an answer to this since quite a few days!
>
>
> You can add a watch on that entire path from dom0, no problem. As for
> getting a list of all domains, you can only do that with sysctl. If you
> really need it then #define __XEN_TOOLS__ before including sysctl.h.
>
>  -- Keir
>
>

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Re: Unable to include xen/sched.h

[Keir Fraser]

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You need to define __XEN_TOOLS__ before you include any Xen public headers.

 -- Keir

On 14/11/07 12:38, "ashutosh mehra" <ashutosh.xen@gmail.com> wrote:

> Hi,
> I tried including sysctl.h using
> #ifndef __XEN_TOOLS__
> #define __XEN_TOOLS__ 1
> #endif
> #include <xen/interface/sysctl.h>
> 
>  but on compilation I get following errors:
> 
> In file included from /usr/local/src/xen-
> 3.1.0-src/linux-2.6.18-xen/include/xen/interface/sysctl.h:35,
>                  from /home/ashu/Desktop/xenmodule/mymodule.c:19:
> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:4
> 0: error: expected specifier-qualifier-list before XEN_GUEST_HANDLE_64
> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:9
> 5: error: expected specifier-qualifier-list before uint64_aligned_t
> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:1
> 12: error: expected specifier-qualifier-list before uint64_aligned_t
> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:1
> 38: error: expected specifier-qualifier-list before uint64_aligned_t
> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:1
> 50: error: expected specifier-qualifier-list before uint64_aligned_t
> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:2
> 26: error: expected specifier-qualifier-list before XEN_GUEST_HANDLE_64
> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:2
> 37: error: expected specifier-qualifier-list before uint64_aligned_t
> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:2
> 47: error: expected specifier-qualifier-list before XEN_GUEST_HANDLE_64
> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:2
> 61: error: expected specifier-qualifier-list before uint64_aligned_t
> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:2
> 99: error: expected specifier-qualifier-list before uint64_aligned_t
> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:3
> 42: error: expected specifier-qualifier-list before uint64_aligned_t
> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:3
> 62: error: expected specifier-qualifier-list before uint64_aligned_t
> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:3
> 74: error: expected specifier-qualifier-list before uint64_aligned_t
> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/domctl.h:3
> 97: error: expected specifier-qualifier-list before XEN_GUEST_HANDLE_64
> In file included from /home/ashu/Desktop/xenmodule/mymodule.c:19:
> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/sysctl.h:4
> 6: error: expected specifier-qualifier-list before XEN_GUEST_HANDLE_64
> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/sysctl.h:6
> 8: error: expected specifier-qualifier-list before uint64_aligned_t
> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/sysctl.h:8
> 4: error: expected specifier-qualifier-list before uint64_aligned_t
> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/sysctl.h:1
> 24: error: expected specifier-qualifier-list before XEN_GUEST_HANDLE_64
> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/sysctl.h:1
> 36: error: expected specifier-qualifier-list before XEN_GUEST_HANDLE_64
> /usr/local/src/xen-3.1.0-src/linux-2.6.18-xen/include/xen/interface/sysctl.h:1
> 49: error: expected specifier-qualifier-list before XEN_GUEST_HANDLE_64
> 
> Any solutions for this problem?
> 
> One more question...
> How to add a watch on entire tree? I tried using register_xenbus_watch() to
> add a watch on "local/domain" but it is not working.
> And...
> what does this function do?
> char **xenbus_directory(struct xenbus_transaction t,
>             const char *dir, const char *node, unsigned int *num);
> 
> Thanks,
> Ashutosh
> 
> 
> On Nov 14, 2007 4:54 PM, Keir Fraser < Keir.Fraser@cl.cam.ac.uk> wrote:
>> 
>> 
>> 
>> On 14/11/07 11:21, "ashutosh mehra" <ashutosh.xen@gmail.com> wrote:
>> 
>>> I tried #include<xen/interface/sysctl.h> but I get an error: #error "domctl
>>> operations are intended for use by node control tools only"
>>> 
>>> Keir, how do I add a watch on an entire path, e.g. /local/domain/? More
>>> importantly, how can I get the list of domains/domainIds of the currently
>>> running domains in a module running in dom0 kernel?? Please help, I'm
>>> looking for an answer to this since quite a few days!
>> 
>> You can add a watch on that entire path from dom0, no problem. As for getting
>> a list of all domains, you can only do that with sysctl. If you really need
>> it then #define __XEN_TOOLS__ before including sysctl.h.
>> 
>>  -- Keir
>> 
> 
> 



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Re: Unable to include xen/sched.h

[ashutosh mehra]

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Can't I access it in a module running in dom0? Do I have to move the
module's code to the hypervisor?

On Nov 12, 2007 1:42 PM, Akio Takebe <takebe_akio@jp.fujitsu.com> wrote:

> Hi,
>
> >I'm unable to include xen/sched.h in my kernel module, although
> >xen/xenbus.h, etc work fine. I get an error - xen/sched.h - no such file.
> I
> >need to access the for_each_domain macro. Please help!
> The macro and header file are for hypervisor.
> Guest kernel cannot use the macro and domain_list.
>
> Best Regards,
>
> Akio Takebe
>
>

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Re: Unable to include xen/sched.h

[Mark Williamson]

On Monday 12 November 2007, ashutosh mehra wrote:
> Can't I access it in a module running in dom0? Do I have to move the
> module's code to the hypervisor?

Depending on what you're trying to do, you could run the part of the code 
which gets the list of domain details in userspace.  You can invoke domctl / 
sysctl calls from there, so you should be able to get the domain list just by 
calling an xc library function.

If you really need a kernel component, you could either abuse the domctl / 
sysctls in kernel (if you use these from kernelspace then your kernel may be 
tied to a specific version of Xen when those change), or a userspace 
component could access those APIs and then communicate the relevant 
information to your kernel module.

Hope that helps,
Cheers,
Mark

> On Nov 12, 2007 1:42 PM, Akio Takebe <takebe_akio@jp.fujitsu.com> wrote:
> > Hi,
> >
> > >I'm unable to include xen/sched.h in my kernel module, although
> > >xen/xenbus.h, etc work fine. I get an error - xen/sched.h - no such
> > > file.
> >
> > I
> >
> > >need to access the for_each_domain macro. Please help!
> >
> > The macro and header file are for hypervisor.
> > Guest kernel cannot use the macro and domain_list.
> >
> > Best Regards,
> >
> > Akio Takebe



-- 
Dave: Just a question. What use is a unicyle with no seat?  And no pedals!
Mark: To answer a question with a question: What use is a skateboard?
Dave: Skateboards have wheels.
Mark: My wheel has a wheel!