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Date: Thu, 8 May 2025 14:54:39 -0400
From: Steven Rostedt <rostedt@goodmis.org>
To: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
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 <blakejones@google.com>, Beau Belgrave <beaub@linux.microsoft.com>, "Jose
 E. Marchesi" <jemarch@gnu.org>
Subject: Re: [PATCH v5 13/17] perf: Support deferred user callchains
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On Thu, 8 May 2025 14:49:59 -0400
Mathieu Desnoyers <mathieu.desnoyers@efficios.com> wrote:

> AFAIR, the cookie method generates the cookie by combining the cpu
> number with a per-cpu count.
> 
> This ensures that there are not two cookies emitted at the same time
> from two CPUs that have the same value by accident.
> 
> How would the timestamp method prevent this ?

Do we care? It only needs to be unique per pid doesn't it?

-- Steve