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
WARNING: multiple messages have this Message-ID (diff)
From: Steven Rostedt <rostedt@goodmis.org>
To: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Cc: Vineet Gupta <Vineet.Gupta1@synopsys.com>,
linux-snps-arc@lists.infradead.org,
Alexey Brodkin <Alexey.Brodkin@synopsys.com>,
linux-kernel@vger.kernel.org, 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
_______________________________________________
linux-snps-arc mailing list
linux-snps-arc@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-snps-arc
next prev parent reply other threads:[~2020-03-27 17:10 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-27 15:53 [RFC] ARC: initial ftrace support Eugeniy Paltsev
2020-03-27 15:53 ` Eugeniy Paltsev
2020-03-27 17:10 ` Steven Rostedt [this message]
2020-03-27 17:10 ` Steven Rostedt
2020-04-02 1:17 ` Vineet Gupta
2020-04-02 1:17 ` Vineet Gupta
2020-04-02 8:10 ` Claudiu Zissulescu Ianculescu
2020-04-02 8:10 ` Claudiu Zissulescu Ianculescu
2020-04-02 14:15 ` Alexey Brodkin
2020-04-02 14:15 ` Alexey Brodkin
2020-05-14 13:09 ` Eugeniy Paltsev
2020-05-14 13:09 ` Eugeniy Paltsev
2020-04-02 17:52 ` Steven Rostedt
2020-04-02 17:52 ` Steven Rostedt
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200327131020.79e68313@gandalf.local.home \
--to=rostedt@goodmis.org \
--cc=Alexey.Brodkin@synopsys.com \
--cc=Eugeniy.Paltsev@synopsys.com \
--cc=Vineet.Gupta1@synopsys.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-snps-arc@lists.infradead.org \
--cc=mingo@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.