tracing: Kernel access to Ftrace instances

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Ftrace provides the feature “instances” that provides the capability to
create multiple Ftrace ring buffers. However, currently these buffers
are created/accessed via userspace only. The kernel APIs providing these
features are not exported, hence cannot be used by other kernel
components.

This patch aims to extend this infrastructure to provide the
flexibility to create/log/remove/ enable-disable existing trace events
to these buffers from within the kernel.

Link: http://lkml.kernel.org/r/1553106531-3281-2-git-send-email-divya.indi@oracle.com

Signed-off-by: Divya Indi <divya.indi@oracle.com>
Reviewed-by: Joe Jin <joe.jin@oracle.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

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Divya Indi 2019-03-20 11:28:51 -07:00 • committed by Steven Rostedt (VMware)

parent 40ed29b373

commit f45d1225ad

2 changed files with 51 additions and 24 deletions

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74

kernel/trace/trace.c

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1

kernel/trace/trace_events.c

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