From: Mathieu Desnoyers <compudj@krystal.dyndns.org>
To: ltt-dev@lists.casi.polymtl.ca, linux-kernel@vger.kernel.org
Subject: LTTng 0.87 improved page fault tracing
Date: Tue, 27 Jan 2009 16:02:03 -0500 [thread overview]
Message-ID: <20090127210203.GA13478@Krystal> (raw)
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
--
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
next reply other threads:[~2009-01-27 21:02 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-27 21:02 Mathieu Desnoyers [this message]
2009-01-29 3:42 ` [ltt-dev] LTTng 0.87 improved page fault tracing KOSAKI Motohiro
2009-01-29 4:43 ` Mathieu Desnoyers
2009-01-29 4:47 ` KOSAKI Motohiro
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