Thread (8 messages) 8 messages, 3 authors, 1d ago

Re: [RFC PATCH 2/2] tracing: Record and show boot ID in last_boot_info

From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Date: 2026-06-01 04:38:31
Also in: lkml

On Thu, 28 May 2026 16:36:33 -0400
Steven Rostedt [off-list ref] wrote:
On Sun, 24 May 2026 10:44:39 +0900
Masami Hiramatsu (Google) [off-list ref] wrote:
quoted
quoted
If the get_boot_id() is accepted by the random folks, then I'm fine with
this change.  
Yeah, BTW, Sashiko found this can be initialized before we get enough
entropy for random seed. Maybe we need one more delay.
Well, maybe for adding the boot_id later, but the code that initializes the
buffers needs to stay early. With the backup instance, the persistent ring
buffer can restart tracing immediately.
Agreed, so the buffer will be made in early stage without initializing
the boot_id field, and it will be updated when user reads the boot_id
from kernel. Anyway, without reading boot_id from user space, it is
meaningless.

Thank you,


-- 
Masami Hiramatsu (Google) [off-list ref]
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