From: Steven Rostedt <rostedt@goodmis.org>
To: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Cc: linux-snps-arc@lists.infradead.org,
Vineet Gupta <Vineet.Gupta1@synopsys.com>,
linux-kernel@vger.kernel.org,
Alexey Brodkin <Alexey.Brodkin@synopsys.com>,
Ingo Molnar <mingo@redhat.com>
Subject: Re: [RFC] ARC: initial ftrace support
Date: Fri, 27 Mar 2020 13:10:20 -0400 [thread overview]
Message-ID: <20200327131020.79e68313@gandalf.local.home> (raw)
In-Reply-To: <20200327155355.18668-1-Eugeniy.Paltsev@synopsys.com>
On Fri, 27 Mar 2020 18:53:55 +0300
Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> wrote:
> +
> +noinline void _mcount(unsigned long parent_ip)
> +{
> + unsigned long ip = (unsigned long)__builtin_return_address(0);
> +
> + if (unlikely(ftrace_trace_function != ftrace_stub))
> + ftrace_trace_function(ip - MCOUNT_INSN_SIZE, parent_ip,
> + NULL, NULL);
> +}
> +EXPORT_SYMBOL(_mcount);
So, ARCv2 allows the _mcount code to be written in C? Nice!
-- Steve
next prev parent reply other threads:[~2020-03-27 17:10 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-27 15:53 Eugeniy Paltsev
2020-03-27 17:10 ` Steven Rostedt [this message]
2020-04-02 1:17 ` Vineet Gupta
2020-04-02 8:10 ` Claudiu Zissulescu Ianculescu
2020-04-02 14:15 ` Alexey Brodkin
2020-05-14 13:09 ` Eugeniy Paltsev
2020-04-02 17:52 ` Steven Rostedt
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