ring-buffer: Add magic and struct size to boot up meta data

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Add a magic number as well as save the struct size of the ring_buffer_meta
structure in the meta data to also use as validation. Updating the magic
number could be used to force a invalidation between kernel versions, and
saving the structure size is also a good method to make sure the content
is what is expected.

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Vincent Donnefort <vdonnefort@google.com>
Link: https://lore.kernel.org/20240815115032.0c197b32@rorschach.local.home
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

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Steven Rostedt 2024-08-15 11:50:32 -04:00 • committed by Steven Rostedt (Google)

parent bca704f62d

commit d0f2d6e951

1 changed files with 14 additions and 0 deletions

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kernel/trace/ring_buffer.c

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