Messages in this thread | | | Subject | RE: Debuggers for RT (was: Real-Time Preemption: Magic Sysrq p doesn't work) | Date | Tue, 10 May 2005 09:52:47 +0200 | From | "kus Kusche Klaus" <> |
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> * kus Kusche Klaus <kus@keba.com> wrote: > > > I've been asked to analyze the various tools and possibilities > > available to debug an RT kernel. > > > > * kgdb and kdb seem to be deeply incompatible with the RT > patches (they > > mess with the scheduler, interrupts etc.), applying their > patches to an > > RT tree fails quite impressively. > > kgdb is in the -mm tree, and there are periodic ports to the > -mm tree. > Someone used it too on PREEMPT_RT - with some success. > There's no deep > incompatibility with the -RT kernel - just line-for-line collisions. > > Ingo
Hmmm, kgdb is currently out of reach for me: The latest downloadable kgdb tar archive is for 2.6.7, and I can't access the CVS repository (our firewall only allows http:80 and ftp). Does anyone have a downloadable current version?
I tried KDB with 2.6.12-rc2 and RT 7.45-01. It patches fine (except for one trivial reject), compiles fine, boots fine, but freezes immediately and completely when actually entering kdb. Power off is the only way out...
-- Klaus Kusche (Software Development - Control Systems) KEBA AG Gewerbepark Urfahr, A-4041 Linz, Austria (Europe) Tel: +43 / 732 / 7090-3120 Fax: +43 / 732 / 7090-6301 E-Mail: kus@keba.com WWW: www.keba.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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