Thread: Re: [mpls-linux-general] how to debug
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mpls-linux-general
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From: <EMI...@te...> - 2005-10-07 08:24:14
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Hi list, I have been reading some information about how to debug the=20 kernel and there are 3 basic ways: 1.- Remote kernel debugging using=20 gdb and using 2 computers linked via ethenet. 2.- Using kgdb, but I do=20 not know if I can install it in a Kernel 2.6.9 where I have 1.946. 2.-=20 The User-mode-linux. I want to see what function are called and what=20 commands are executed when for example you do a ping with MPLS 1.946,=20 and other things with MPLS 1.946. Right now, I have 6 computers with=20 fedora core 2 with 2 kernel: 2.6.5; and 2.6.9, which is the one where =20 I installed 1.946. Which method would you suggest? If it is the user- mode-linux, the host kernel would be the 2.6.5 and the guest kernel=20 the 2.6.9 with the MPLS 1.946. If I do that, will I be able to do a=20 ping to another computer? Because I have heard that it is a bit=20 difficult to configure uml with networking support, how do I do that? Do you know any page where I can find the steps I have to to follow? Thank you very much ----Mensaje original---- De: jl...@mi... Recibido: 03/10/2005 19:19 Para: "EMI...@te..." <EMI...@te...> CC: <mpl...@li.... net> Asunto: Re: [mpls-linux-general] how to debug Welcome to the=20 world of kernel programming. To help speed up the process I do much of=20 my initial development testing using user-mode-linux. Where my guest=20 kernel is the development kernel. With UML you can run gdb or other=20 debuggers against a guest kernel. On Mon, Oct 03, 2005 at 07:03:18PM=20 +0200, EMI...@te... wrote: > Hi list, >=20 > I was wondering=20 what you do to "debug" the MPLS functions: do=20 > you have > some=20 program to see which functions and what commands are=20 > executed >=20 whenever for example you do a ping? > I do it with "printk()" to=20 > see=20 it but it is very tedious and every > time I want to add a "printk()"=20 > I have to recompile the kernel.=20 > Do you use any other method? >=20 >=20 Thank=20 > you very much >=20 >=20 > Prueba el Nuevo Correo Terra; Seguro,=20 R???pido, Fiable. >=20 >=20 >=20 >=20 ------------------------------------------------------- > This SF.Net=20 email is sponsored by: > Power Architecture Resource Center: Free=20 content, downloads, discussions, > and more. http://solutions.newsforge. com/ibmarch.tmpl > _______________________________________________ >=20 mpls-linux-general mailing list > mpl...@li.... net > https://lists.sourceforge.net/lists/listinfo/mpls-linux-general --=20 James R. Leu jl...@mi... Prueba el Nuevo Correo Terra; Seguro, R=C3=A1pido, Fiable. |
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From: <EMI...@te...> - 2005-10-11 07:57:35
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Hi list, I have been reading some information about how to debug the=20 kernel and there are 3 basic ways: 1.- Remote kernel debugging using=20 gdb and using 2 computers linked via ethenet. 2.- Using kgdb, but I do=20 not know if I can install it in a Kernel 2.6.9 where I have 1.946. 2.-=20 The User-mode-linux. I want to see what function are called and what=20 commands are executed when for example you do a ping with MPLS 1.946,=20 and other things with MPLS 1.946. Right now, I have 6 computers with=20 fedora core 2 with 2 kernel: 2.6.5; and 2.6.9, which is the one where =20 I installed 1.946. Which method would you suggest? If it is the user- mode-linux, the host kernel would be the 2.6.5 and the guest kernel=20 the 2.6.9 with the MPLS 1.946. If I do that, will I be able to do a=20 ping to another computer? Because I have heard that it is a bit=20 difficult to configure uml with networking support, how do I do that? Do you know any page where I can find the steps I have to to follow? Thank you very much ----Mensaje original---- De: jl...@mi... Recibido: 03/10/2005 19:19 Para: "EMI...@te..." <EMI...@te...> CC: <mpl...@li.... net> Asunto: Re: [mpls-linux-general] how to debug Welcome to the=20 world of kernel programming. To help speed up the process I do much of=20 my initial development testing using user-mode-linux. Where my guest=20 kernel is the development kernel. With UML you can run gdb or other=20 debuggers against a guest kernel. On Mon, Oct 03, 2005 at 07:03:18PM=20 +0200, EMI...@te... wrote: > Hi list, >=20 > I was wondering=20 what you do to "debug" the MPLS functions: do=20 > you have > some=20 program to see which functions and what commands are=20 > executed >=20 whenever for example you do a ping? > I do it with "printk()" to=20 > see=20 it but it is very tedious and every > time I want to add a "printk()"=20 > I have to recompile the kernel.=20 > Do you use any other method? >=20 >=20 Thank=20 > you very much >=20 >=20 > Prueba el Nuevo Correo Terra; Seguro,=20 R???pido, Fiable. >=20 >=20 >=20 >=20 ------------------------------------------------------- > This SF.Net=20 email is sponsored by: > Power Architecture Resource Center: Free=20 content, downloads, discussions, > and more. http://solutions.newsforge. com/ibmarch.tmpl > _______________________________________________ >=20 mpls-linux-general mailing list > mpl...@li.... net > https://lists.sourceforge.net/lists/listinfo/mpls-linux-general --=20 James R. Leu jl...@mi... Prueba el Nuevo Correo Terra; Seguro, R=C3=A1pido, Fiable. |
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From: James R. L. <jl...@mi...> - 2005-10-11 14:15:33
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First try turning on mpls kernel debugging and look at the output of 'dmesg' after doing something MPLS related, you will see a ton of output. Most of which say which functions are being called and the results. On Fri, Oct 07, 2005 at 10:22:40AM +0200, EMI...@te... wrote: > Hi list, >=20 > I have been reading some information about how to debug the=20 > kernel and there are 3 basic ways: > 1.- Remote kernel debugging using=20 > gdb and using 2 computers linked via ethenet. > 2.- Using kgdb, but I do=20 > not know if I can install it in a Kernel 2.6.9 where I have 1.946. > 2.-=20 > The User-mode-linux. >=20 > I want to see what function are called and what=20 > commands are executed when for example you do a ping with MPLS 1.946,=20 > and other things with MPLS 1.946. > Right now, I have 6 computers with=20 > fedora core 2 with 2 kernel: 2.6.5; and 2.6.9, which is the one where = =20 > I installed 1.946. >=20 > Which method would you suggest? > If it is the user- > mode-linux, the host kernel would be the 2.6.5 and the guest kernel=20 > the 2.6.9 with the MPLS 1.946. If I do that, will I be able to do a=20 > ping to another computer? Because I have heard that it is a bit=20 > difficult to configure uml with networking support, how do I do that? > Do you know any page where I can find the steps I have to to follow? >=20 > Thank you very much >=20 > ----Mensaje original---- > De: jl...@mi... > Recibido: 03/10/2005 19:19 > Para: "EMI...@te..." > <EMI...@te...> > CC: <mpl...@li.... > net> > Asunto: Re: [mpls-linux-general] how to debug >=20 > Welcome to the=20 > world of kernel programming. >=20 > To help speed up the process I do much of=20 > my initial development testing > using user-mode-linux. Where my guest=20 > kernel is the development kernel. > With UML you can run gdb or other=20 > debuggers against a guest kernel. >=20 > On Mon, Oct 03, 2005 at 07:03:18PM=20 > +0200, EMI...@te... wrote: > > Hi list, > >=20 > > I was wondering=20 > what you do to "debug" the MPLS functions: do=20 > > you have > > some=20 > program to see which functions and what commands are=20 > > executed > >=20 > whenever for example you do a ping? > > I do it with "printk()" to=20 > > see=20 > it but it is very tedious and every > > time I want to add a "printk()"=20 > > I have to recompile the kernel.=20 > > Do you use any other method? > >=20 > >=20 > Thank=20 > > you very much > >=20 > >=20 > > Prueba el Nuevo Correo Terra; Seguro,=20 > R???pido, Fiable. > >=20 > >=20 > >=20 > >=20 > ------------------------------------------------------- > > This SF.Net=20 > email is sponsored by: > > Power Architecture Resource Center: Free=20 > content, downloads, discussions, > > and more. http://solutions.newsforge. > com/ibmarch.tmpl > > _______________________________________________ > >=20 > mpls-linux-general mailing list > > mpl...@li.... > net > > https://lists.sourceforge.net/lists/listinfo/mpls-linux-general >=20 > --=20 > James R. Leu > jl...@mi... >=20 >=20 >=20 >=20 >=20 > Prueba el Nuevo Correo Terra; Seguro, R??pido, Fiable. >=20 >=20 >=20 > ------------------------------------------------------- > This SF.Net email is sponsored by: > Power Architecture Resource Center: Free content, downloads, discussions, > and more. http://solutions.newsforge.com/ibmarch.tmpl > _______________________________________________ > mpls-linux-general mailing list > mpl...@li... > https://lists.sourceforge.net/lists/listinfo/mpls-linux-general --=20 James R. Leu jl...@mi... |
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