From: Prasanna S Panchamukhi <prasanna@in.ibm.com>
To: "Frank Ch. Eigler" <fche@redhat.com>
Cc: Hien Q Nguyen <nguyhien@us.ibm.com>, systemtap@sources.redhat.com
Subject: Re: [...] kprobes [minutes] portion 20060406
Date: Fri, 07 Apr 2006 08:25:00 -0000 [thread overview]
Message-ID: <20060407082517.GA7546@in.ibm.com> (raw)
In-Reply-To: <20060406212838.GB22703@redhat.com>
On Thu, Apr 06, 2006 at 05:28:38PM -0400, Frank Ch. Eigler wrote:
> Hi -
>
> On Thu, Apr 06, 2006 at 02:14:46PM -0700, Hien Q Nguyen wrote:
> > User space probe
> > Prasanna had prototype that execute the handler in the user space [...]
>
> Beyond merely dispatching, it is important to consider what such a
> handler can do. Would it still be useful if it cannot call into the
> kernel-side runtime, if it cannot share variables with kernel-space
> probes?
No. The purpose of prototype was to see how it can be implemented.
To my opinion having handler run in user-space does not suit well for
system-wide tracing. But that might be one of the alternative approaches
to per-process tracing, since ptrace is found to have more performance
related problems.
Thanks
Prasanna
--
Thanks & Regards
Prasanna S Panchamukhi
Linux Technology Center
India Software Labs, IBM Bangalore
Email: prasanna@in.ibm.com
Ph: 91-80-51776329
next prev parent reply other threads:[~2006-04-07 8:25 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <OF450EB249.F3B0B23E-ON88257148.00738621-88257148.0074730E@us.ibm.com>
2006-04-06 21:28 ` Frank Ch. Eigler
2006-04-06 22:08 ` Richard J Moore
2006-04-07 8:25 ` Prasanna S Panchamukhi [this message]
2006-04-07 8:43 ` Richard J Moore
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=20060407082517.GA7546@in.ibm.com \
--to=prasanna@in.ibm.com \
--cc=fche@redhat.com \
--cc=nguyhien@us.ibm.com \
--cc=systemtap@sources.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).