From: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
To: akpm@linux-foundation.org, Ingo Molnar <mingo@elte.hu>,
linux-kernel@vger.kernel.org
Subject: [patch 0/6] Linux Kernel Markers - Use Immediate Values Optimization
Date: Wed, 05 Dec 2007 21:15:59 -0500 [thread overview]
Message-ID: <20071206021559.040218929@polymtl.ca> (raw)
Hi,
The Markers are meant to have a _very_ low impact on performance (even on
d-cache hits) when disabled. This is provided by the Immediate Values.
However, to be able to instrument code called from traps (NMI, MCE handler, all
code called by there functions and all traps that can be triggered by these),
the rock-solid implementation of the immediate values seems required. It,
however, comes at the cost of some added complexity.
This patch applies on 2.6.24-rc4-git3, after the
Text Edit Lock
Immediate Values (redux)
Profiling Use Immediate Values
patchsets.
It could be interesting to queue this for 2.6.25 so we can also add basic kernel
instrumentation (patches follow).
Mathieu
--
Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
next reply other threads:[~2007-12-06 2:21 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-06 2:15 Mathieu Desnoyers [this message]
2007-12-06 2:16 ` [patch 1/6] Immediate Values - Move Kprobes x86 restore_interrupt to kdebug.h Mathieu Desnoyers
2007-12-06 2:16 ` [patch 2/6] Add __discard section to x86 Mathieu Desnoyers
2007-12-06 2:16 ` [patch 3/6] Immediate Values - x86 Optimization NMI and MCE support Mathieu Desnoyers
2007-12-06 15:24 ` [patch 3/6] Immediate Values - x86 Optimization NMI and MCE support (update) Mathieu Desnoyers
2007-12-06 2:16 ` [patch 4/6] Immediate Values - Powerpc Optimization NMI MCE support Mathieu Desnoyers
2007-12-06 2:16 ` [patch 5/6] Immediate Values Use Arch NMI and MCE Support Mathieu Desnoyers
2007-12-06 2:16 ` [patch 6/6] Linux Kernel Markers - Use Immediate Values Mathieu Desnoyers
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