[lttng-ust.git] / doc / examples / getcpu-override / README.md

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This getcpu override example shows how to implement and load a getcpu
override plugin for LTTng-UST. This can be useful in cases where direct
hardware access is available for architecture-specific registers holding
the CPU number, and where it should be used rather than the Linux kernel
sched_getcpu() vDSO/syscall.
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	1	<!--
	2	SPDX-FileCopyrightText: 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	3
	4	SPDX-License-Identifier: CC-BY-4.0
	5	-->
	6
	7	This getcpu override example shows how to implement and load a getcpu
	8	override plugin for LTTng-UST. This can be useful in cases where direct
	9	hardware access is available for architecture-specific registers holding
	10	the CPU number, and where it should be used rather than the Linux kernel
	11	sched_getcpu() vDSO/syscall.