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To: Rajasekhar Duddu <rajduddu@linux.vnet.ibm.com>
Cc: systemtap@sources.redhat.com
Subject: Re: [PATCH v3] Tracepoint Tapset for Memory Subsystem
References: <20090919050102.GA3767@rajduddu> <4AB90BE0.4030405@redhat.com> 	<y0mmy4mishg.fsf@fche.csb> <4AB94A1B.4090801@redhat.com> 	<20090924180817.GA9698@rajduddu> <4ABD3B2B.4020107@redhat.com> 	<20090930101156.GA3792@rajduddu> <20091002151344.GA9516@rajduddu> 	<y0mocokgxe2.fsf@fche.csb> <20091007130728.GA6574@rajduddu>
From: fche@redhat.com (Frank Ch. Eigler)
Date: Wed, 07 Oct 2009 19:51:00 -0000
In-Reply-To: <20091007130728.GA6574@rajduddu> (Rajasekhar Duddu's message of "Wed, 7 Oct 2009 18:37:28 +0530")
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Rajasekhar Duddu <rajduddu@linux.vnet.ibm.com> writes:

> [...]
>> Nice.  I thought that the raison d'etre for these aliases was to
>> abstract the presence or absence of tracepoints, so is there no
>> fallback kprobe available?  Something like this:
>> 
> Fallback kprobe is not available for other memory functions because
> the variables exported by them are will be modified.

Could you elaborate?  Do you mean that the same values may not be
available from a kprobe context?


- FChE