From mboxrd@z Thu Jan  1 00:00:00 1970
From: Arnd Bergmann <arnd@arndb.de>
Subject: Re: kvm-s390: Dont exit SIE on SIGP sense running
Date: Mon, 21 Jun 2010 12:26:21 +0200
Message-ID: <201006211226.21365.arnd@arndb.de>
References: <201006172316.21684.borntraeger@de.ibm.com> <4C1F2286.7090108@redhat.com> <201006211215.33599.borntraeger@de.ibm.com>
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Cc: Avi Kivity <avi@redhat.com>, Marcelo Tosatti <mtosatti@redhat.com>,
	kvm@vger.kernel.org, Heiko Carstens <heiko.carstens@de.ibm.com>,
	Martin Schwidefsky <schwidefsky@de.ibm.com>,
	Carsten Otte <cotte@de.ibm.com>
To: Christian Borntraeger <borntraeger@de.ibm.com>
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On Monday 21 June 2010, Christian Borntraeger wrote:
> Hmm, dont know. Currently this calls into a s390 debug tracing facility
> (arch/s390/kernel/debug.c) which is heavily used by our service folks.
> There are commands for crash and lcrash to show these s390 debug traces
> from a dump.
> 
> Maybe its worth to investigate if we should change some of these events to
> have both ftrace-tracepoints and the debug traces.

I think that it would be worthwhile to convert the entire s390 debug
code to become tracepoints, either one by one or making it a subclass
with the existing interfaces.

	Arnd