linux-kernel - Re: [RFC PATCH v1 1/1] tracing/kprobe: Add multi-probe support for 'perf

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Message-ID: <20230818114141.2a3a75ee@gandalf.local.home>
Date:   Fri, 18 Aug 2023 11:41:41 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     "Masami Hiramatsu (Google)" <mhiramat@...nel.org>
Cc:     Francis Laniel <flaniel@...ux.microsoft.com>,
        linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org
Subject: Re: [RFC PATCH v1 1/1] tracing/kprobe: Add multi-probe support for
 'perf_kprobe' PMU

On Fri, 18 Aug 2023 21:37:05 +0900
Masami Hiramatsu (Google) <mhiramat@...nel.org> wrote:

> That's why perf probe uses the offset from '_text'. Normal KASLR will just
> moves all symbols. (Finer one will move all symbols randomely)
> This should not need to access /proc/kallsyms but vmlinux or SystemMap.

We could just pass in: "_text+offset" too.

-- Steve