linux-kernel - Re: [RFC PATCH -tip 0/5] kprobes: Abolish jprobe APIs

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Message-ID: <20171005211130.2c0d7987@vmware.local.home>
Date:   Thu, 5 Oct 2017 21:11:30 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Masami Hiramatsu <mhiramat@...nel.org>
Cc:     Kees Cook <keescook@...omium.org>, Ingo Molnar <mingo@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Ananth N Mavinakayanahalli <ananth@...ux.vnet.ibm.com>,
        "Paul E . McKenney" <paulmck@...ux.vnet.ibm.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>,
        "H . Peter Anvin" <hpa@...or.com>,
        Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>,
        "David S . Miller" <davem@...emloft.net>,
        Ian McDonald <ian.mcdonald@...di.co.nz>,
        Vlad Yasevich <vyasevich@...il.com>,
        Stephen Hemminger <stephen@...workplumber.org>
Subject: Re: [RFC PATCH -tip 0/5] kprobes: Abolish jprobe APIs

On Fri, 6 Oct 2017 09:32:52 +0900
Masami Hiramatsu <mhiramat@...nel.org> wrote:

> I think using ftrace gives you lower latency, but you need to depend on
> CONFIG_FUNCTION_TRACER instead of CONFIG_KPROBES.

Which shouldn't be an issue, since all distros now have that enabled.

-- Steve