From: "H. Peter Anvin" <hpa@zytor.com>
To: Andi Kleen <andi@firstfloor.org>, Alexei Starovoitov <ast@plumgrid.com>
Cc: Ingo Molnar <mingo@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Thomas Gleixner <tglx@linutronix.de>,
Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>,
Tom Zanussi <tom.zanussi@linux.intel.com>,
Jovi Zhangwei <jovi.zhangwei@gmail.com>,
Eric Dumazet <edumazet@google.com>,
linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH tip 0/5] tracing filters with BPF
Date: Thu, 05 Dec 2013 17:10:57 -0800 [thread overview]
Message-ID: <52A12421.2040208@zytor.com> (raw)
In-Reply-To: <20131206001454.GB21717@two.firstfloor.org>
On 12/05/2013 04:14 PM, Andi Kleen wrote:
>
> In my experience there are roughly two groups of trace users:
> kernel hackers and users. The kernel hackers want something
> convenient and fast, but for anything complicated or performance
> critical they can always hack the kernel to include custom
> instrumentation.
>
Not to mention that in that case we might as well -- since we need a
compiler anyway -- generate the machine code in user space; the JIT
solution really only is useful if it can provide something that we can't
do otherwise, e.g. enable it in secure boot environments.
-hpa
next prev parent reply other threads:[~2013-12-06 1:11 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-03 4:28 [RFC PATCH tip 0/5] tracing filters with BPF Alexei Starovoitov
2013-12-03 4:28 ` [RFC PATCH tip 1/5] Extended BPF core framework Alexei Starovoitov
2013-12-03 4:28 ` [RFC PATCH tip 2/5] Extended BPF JIT for x86-64 Alexei Starovoitov
2013-12-03 4:28 ` [RFC PATCH tip 3/5] Extended BPF (64-bit BPF) design document Alexei Starovoitov
2013-12-03 17:01 ` H. Peter Anvin
2013-12-03 19:59 ` Alexei Starovoitov
2013-12-03 20:41 ` Frank Ch. Eigler
2013-12-03 21:31 ` Alexei Starovoitov
2013-12-04 9:24 ` Ingo Molnar
2013-12-03 4:28 ` [RFC PATCH tip 4/5] use BPF in tracing filters Alexei Starovoitov
2013-12-04 0:48 ` Masami Hiramatsu
2013-12-04 1:11 ` Steven Rostedt
2013-12-05 0:05 ` Masami Hiramatsu
2013-12-05 5:11 ` Alexei Starovoitov
2013-12-06 8:43 ` Masami Hiramatsu
2013-12-06 10:05 ` Jovi Zhangwei
2013-12-06 23:48 ` Masami Hiramatsu
2013-12-08 18:22 ` Frank Ch. Eigler
2013-12-09 10:12 ` Masami Hiramatsu
2013-12-03 4:28 ` [RFC PATCH tip 5/5] tracing filter examples in BPF Alexei Starovoitov
2013-12-04 0:35 ` Jonathan Corbet
2013-12-04 1:21 ` Alexei Starovoitov
2013-12-03 9:16 ` [RFC PATCH tip 0/5] tracing filters with BPF Ingo Molnar
2013-12-03 15:33 ` Steven Rostedt
2013-12-03 18:26 ` Alexei Starovoitov
2013-12-04 1:13 ` Masami Hiramatsu
2013-12-09 7:29 ` Namhyung Kim
2013-12-09 9:51 ` Masami Hiramatsu
2013-12-03 18:06 ` Alexei Starovoitov
2013-12-04 9:34 ` Ingo Molnar
2013-12-04 17:36 ` Alexei Starovoitov
2013-12-05 10:38 ` Ingo Molnar
2013-12-06 5:43 ` Alexei Starovoitov
2013-12-03 10:34 ` Masami Hiramatsu
2013-12-04 0:01 ` Andi Kleen
2013-12-04 3:09 ` Alexei Starovoitov
2013-12-05 4:40 ` Alexei Starovoitov
2013-12-05 10:41 ` Ingo Molnar
2013-12-05 13:46 ` Steven Rostedt
2013-12-05 22:36 ` Alexei Starovoitov
2013-12-05 23:37 ` Steven Rostedt
2013-12-06 4:49 ` Alexei Starovoitov
2013-12-10 15:47 ` Ingo Molnar
2013-12-11 2:32 ` Alexei Starovoitov
2013-12-11 3:35 ` Masami Hiramatsu
2013-12-12 2:48 ` Alexei Starovoitov
2013-12-05 16:11 ` Frank Ch. Eigler
2013-12-05 19:43 ` Alexei Starovoitov
2013-12-06 0:14 ` Andi Kleen
2013-12-06 1:10 ` H. Peter Anvin [this message]
2013-12-06 1:20 ` Andi Kleen
2013-12-06 1:28 ` H. Peter Anvin
2013-12-06 21:43 ` Frank Ch. Eigler
2013-12-06 5:16 ` Alexei Starovoitov
2013-12-06 23:54 ` Masami Hiramatsu
2013-12-07 1:01 ` Alexei Starovoitov
2013-12-06 5:46 ` Jovi Zhangwei
2013-12-07 1:12 ` Alexei Starovoitov
2013-12-07 16:53 ` Jovi Zhangwei
2013-12-06 5:19 ` Jovi Zhangwei
2013-12-06 23:58 ` Masami Hiramatsu
2013-12-07 16:21 ` Jovi Zhangwei
2013-12-09 4:59 ` Masami Hiramatsu
2013-12-06 6:17 ` Jovi Zhangwei
2013-12-05 16:31 ` Frank Ch. Eigler
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=52A12421.2040208@zytor.com \
--to=hpa@zytor.com \
--cc=a.p.zijlstra@chello.nl \
--cc=andi@firstfloor.org \
--cc=ast@plumgrid.com \
--cc=edumazet@google.com \
--cc=jovi.zhangwei@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=masami.hiramatsu.pt@hitachi.com \
--cc=mingo@kernel.org \
--cc=rostedt@goodmis.org \
--cc=tglx@linutronix.de \
--cc=tom.zanussi@linux.intel.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.