linux-kernel - LTTng 0.87 improved page fault tracing

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Message-ID: <20090127210203.GA13478@Krystal>
Date:	Tue, 27 Jan 2009 16:02:03 -0500
From:	Mathieu Desnoyers <compudj@...stal.dyndns.org>
To:	ltt-dev@...ts.casi.polymtl.ca, linux-kernel@...r.kernel.org
Subject: LTTng 0.87 improved page fault tracing

Hi,

I just combined the 4 page fault handler events that were in the tracing
hot path of LTTng into 2 :

kernel page_fault_entry
kernel page_fault_exit

They take as parameter the combination of what was available in the
trap_entry/exit events and handle_mm_fault entry/exit events. This
should lessen the performance impact of the tracer when it's active.
I did the related modifications in LTTV 0.12.8.

Mathieu

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Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68
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