linux-kernel - Re: [PATCH] user_events: Enable user processes to create and write to trace events

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Message-ID: <2a271ca6-1a01-25f5-1b32-9eb79e2d67ab@sony.com>
Date:   Fri, 8 Oct 2021 13:11:59 +0000
From:   <Peter.Enderborg@...y.com>
To:     <beaub@...ux.microsoft.com>, <rostedt@...dmis.org>,
        <mhiramat@...nel.org>
CC:     <linux-trace-devel@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] user_events: Enable user processes to create and write to
 trace events

On 10/6/21 12:44 AM, Beau Belgrave wrote:
> User mode processes that wish to use trace events to get data into
> ftrace, perf, eBPF, etc are limited to uprobes today. The user events
> features enables an ABI for user mode processes to create and write to
> trace events that are isolated from kernel level trace events. This
> enables a faster path for tracing from user mode data as well as opens
> managed code to participate in trace events, where stub locations are
> dynamic.

Is this not very much what the trace_marker do?