ring-buffer: Introduce ring-buffer remotes

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Add ring-buffer remotes to support entities outside of the kernel (such
as firmware or a hypervisor) that writes events into a ring-buffer using
the tracefs format

Require a description of the ring-buffer pages (struct
trace_buffer_desc) and callbacks (swap_reader_page and reset) to set up
the ring-buffer on the kernel side.

Expect the remote entity to maintain and update the meta-page.

Link: https://patch.msgid.link/20260309162516.2623589-4-vdonnefort@google.com
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Vincent Donnefort <vdonnefort@google.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

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Vincent Donnefort 2026-03-09 16:24:49 +00:00 • committed by Steven Rostedt (Google)

parent e682207bf7

commit 2e67fabd8b

2 changed files with 283 additions and 8 deletions

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58

include/linux/ring_buffer.h

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233

kernel/trace/ring_buffer.c

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