linux-kernel - Re: [PATCH v3] kretprobe: percpu support

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Message-ID: <20200218125157.022b459a@gandalf.local.home>
Date:   Tue, 18 Feb 2020 12:51:57 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Masami Hiramatsu <mhiramat@...nel.org>
Cc:     Luigi Rizzo <lrizzo@...gle.com>, linux-kernel@...r.kernel.org,
        naveen.n.rao@...ux.ibm.com, anil.s.keshavamurthy@...el.com,
        davem@...emloft.net, gregkh@...uxfoundation.org,
        Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH v3] kretprobe: percpu support

On Tue, 18 Feb 2020 16:55:29 +0900
Masami Hiramatsu <mhiramat@...nel.org> wrote:

> Racy lock is the kretprobe_hash_lock(), I would like to replace it
> with ftrace's per-task shadow stack. But that will be available
> only if CONFIG_FUNCTION_GRAPH_TRACER=y (and instance has no own
> payload).

I need to start that work up again (soon) and get that finished. :-/

-- Steve