From: Ingo Molnar <mingo@elte.hu>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: jdike@addtoit.com, linux-kernel@vger.kernel.org,
user-mode-linux-devel@lists.sourceforge.net
Subject: Re: [uml-devel] -rt doesn't compile for UML
Date: Wed, 28 Nov 2007 18:02:13 +0100 [thread overview]
Message-ID: <20071128170213.GA23606@elte.hu> (raw)
In-Reply-To: <E1IxQEX-0007Ji-TV@dorka.pomaz.szeredi.hu>
* Miklos Szeredi <miklos@szeredi.hu> wrote:
> > so you can define irqs_off_flags to always-0 and you should be able
> > to get pretty good traces still. It should have no functional
> > impact.
>
> OK, managed to make it compile, but then something goes wrong in
> tracer_alloc_bootmem().
try with a lower MAX_TRACE first - 1 million entries (default) uses up
like 32 MB of RAM per CPU, that might be quite a bit and your UML image
might not be able to take that.
also, you can do a s/trace_alloc_bootmem/alloc_bootmem - the
alloc-bootmem wrapping was only done to get the tracer boot with really
ridiculously high MAX_TRACE.
Ingo
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WARNING: multiple messages have this Message-ID (diff)
From: Ingo Molnar <mingo@elte.hu>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: jdike@addtoit.com, user-mode-linux-devel@lists.sourceforge.net,
linux-kernel@vger.kernel.org
Subject: Re: -rt doesn't compile for UML
Date: Wed, 28 Nov 2007 18:02:13 +0100 [thread overview]
Message-ID: <20071128170213.GA23606@elte.hu> (raw)
In-Reply-To: <E1IxQEX-0007Ji-TV@dorka.pomaz.szeredi.hu>
* Miklos Szeredi <miklos@szeredi.hu> wrote:
> > so you can define irqs_off_flags to always-0 and you should be able
> > to get pretty good traces still. It should have no functional
> > impact.
>
> OK, managed to make it compile, but then something goes wrong in
> tracer_alloc_bootmem().
try with a lower MAX_TRACE first - 1 million entries (default) uses up
like 32 MB of RAM per CPU, that might be quite a bit and your UML image
might not be able to take that.
also, you can do a s/trace_alloc_bootmem/alloc_bootmem - the
alloc-bootmem wrapping was only done to get the tracer boot with really
ridiculously high MAX_TRACE.
Ingo
next prev parent reply other threads:[~2007-11-28 17:02 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-28 12:47 [uml-devel] -rt doesn't compile for UML Miklos Szeredi
2007-11-28 12:47 ` Miklos Szeredi
2007-11-28 12:50 ` [uml-devel] " Ingo Molnar
2007-11-28 12:50 ` Ingo Molnar
2007-11-28 13:09 ` [uml-devel] " Miklos Szeredi
2007-11-28 13:09 ` Miklos Szeredi
2007-11-28 13:15 ` [uml-devel] " Ingo Molnar
2007-11-28 13:15 ` Ingo Molnar
2007-11-28 13:15 ` [uml-devel] " Ingo Molnar
2007-11-28 13:15 ` Ingo Molnar
2007-11-28 13:24 ` [uml-devel] " Miklos Szeredi
2007-11-28 13:24 ` Miklos Szeredi
2007-11-28 15:08 ` [uml-devel] " Jeff Dike
2007-11-28 15:08 ` Jeff Dike
2007-11-28 15:38 ` [uml-devel] " Miklos Szeredi
2007-11-28 15:38 ` Miklos Szeredi
2007-11-28 15:41 ` [uml-devel] " Ingo Molnar
2007-11-28 15:41 ` Ingo Molnar
2007-11-28 16:00 ` [uml-devel] " Miklos Szeredi
2007-11-28 16:00 ` Miklos Szeredi
2007-11-28 16:05 ` [uml-devel] " Ingo Molnar
2007-11-28 16:05 ` Ingo Molnar
2007-11-28 16:57 ` [uml-devel] " Miklos Szeredi
2007-11-28 16:57 ` Miklos Szeredi
2007-11-28 17:02 ` Ingo Molnar [this message]
2007-11-28 17:02 ` Ingo Molnar
2007-11-28 17:02 ` [uml-devel] " Miklos Szeredi
2007-11-28 17:02 ` Miklos Szeredi
2007-11-28 17:24 ` [uml-devel] " Ingo Molnar
2007-11-28 17:24 ` Ingo Molnar
2007-11-28 17:25 ` [uml-devel] " Miklos Szeredi
2007-11-28 17:25 ` Miklos Szeredi
2007-11-28 17:38 ` [uml-devel] " Jeff Dike
2007-11-28 17:38 ` Jeff Dike
2007-11-28 15:06 ` [uml-devel] " Jeff Dike
2007-11-28 15:06 ` Jeff Dike
2007-11-28 15:35 ` [uml-devel] " Miklos Szeredi
2007-11-28 15:35 ` Miklos Szeredi
2007-11-28 18:29 ` [uml-devel] " Jeff Dike
2007-11-28 18:29 ` Jeff Dike
2007-11-28 18:37 ` [uml-devel] " Ingo Molnar
2007-11-28 18:37 ` Ingo Molnar
2007-11-28 18:46 ` [uml-devel] " Miklos Szeredi
2007-11-28 18:46 ` Miklos Szeredi
2007-11-29 10:19 ` [uml-devel] scheduling anomaly on uml (was: -rt doesn't compile for UML) Miklos Szeredi
2007-11-29 10:19 ` Miklos Szeredi
2007-11-29 10:57 ` [uml-devel] " Ingo Molnar
2007-11-29 10:57 ` Ingo Molnar
2007-11-29 11:36 ` [uml-devel] " Miklos Szeredi
2007-11-29 11:36 ` Miklos Szeredi
2007-11-29 11:50 ` [uml-devel] " Ingo Molnar
2007-11-29 11:50 ` Ingo Molnar
2007-11-29 16:07 ` [uml-devel] " Miklos Szeredi
2007-11-29 16:07 ` Miklos Szeredi
2007-11-29 16:25 ` [uml-devel] " Ingo Molnar
2007-11-29 16:25 ` Ingo Molnar
2007-11-29 18:05 ` [uml-devel] " Miklos Szeredi
2007-11-29 18:05 ` Miklos Szeredi
2007-11-29 19:26 ` [uml-devel] " Ingo Molnar
2007-11-29 19:26 ` Ingo Molnar
2007-11-29 17:02 ` [uml-devel] " Jeff Dike
2007-11-29 17:02 ` Jeff Dike
2007-11-29 17:16 ` [uml-devel] " Ingo Molnar
2007-11-29 17:16 ` Ingo Molnar
2007-11-29 17:58 ` [uml-devel] " Miklos Szeredi
2007-11-29 17:58 ` Miklos Szeredi
2007-11-30 19:44 ` [uml-devel] " Miklos Szeredi
2007-11-30 19:44 ` Miklos Szeredi
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