public inbox for systemtap@sourceware.org
 help / color / mirror / Atom feed
From: William Cohen <wcohen@redhat.com>
To: "systemtap@sourceware.org" <systemtap@sourceware.org>
Subject: black listed functions
Date: Mon, 05 Jun 2006 21:41:00 -0000	[thread overview]
Message-ID: <4484A515.3050002@redhat.com> (raw)

As a part of the simple look at systemtaps performance one of the 
benmarks instruments all the function entries 
(tests/benchmark/stap_compile/kfunct_all.stp):

# probe all kernel functions

probe kernel.function("*")
{
}


This is to see how much time it takes to generate code for this example 
and how long it takes to insert the code into the kernel 
(2.6.16-1.2245_FC6).  When it is being inserted into the kernel I got an 
error message like the following. Adding it to the black list got a 
similar error for arch_disarm_kprobe:


Pass 5: starting run.
Running sudo /usr/local/libexec/systemtap/stpd -r -u wcohen -d 10959 -c 
"true" /tmp/stapZBkdfs/stap_10959.ko
ERROR: probe 0 registration failed, rc=1, 
kernel.function("do_nmi@arch/x86_64/kernel/nmi.c:532")

I fixed those up in the black list the machine hung. It looks like there 
are other entries that need to be blacklisted.

-Will

                 reply	other threads:[~2006-06-05 21:41 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

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=4484A515.3050002@redhat.com \
    --to=wcohen@redhat.com \
    --cc=systemtap@sourceware.org \
    /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).