From: Peter Watkins <treestem@gmail.com>
To: linux-mips@linux-mips.org
Subject: SGI Origin 200 (ip27) with DEBUG_SPINLOCK
Date: Thu, 28 Sep 2006 14:24:12 -0400 [thread overview]
Message-ID: <451C134C.6010806@gmail.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 506 bytes --]
Greetings SGI Origin wizards,
I'm doing some SMP testing on an SGI Origin 200 (ip27).
I started with a 2.6.15 vintage kernel and added changes from here:
ftp://ftp.linux-mips.org/pub/linux/mips/people/ralf/ip27/
It boots both processors and runs OK.
Then I turn on CONFIG_DEBUG_SPINLOCK and CONFIG_DEBUG_SPINLOCK_SLEEP,
and get lots of lockup messages. A typical one is below.
Anyone seen this? Some of the low-level lock code has R10000_LLSC_WAR
versions, but I don't see anything wrong there.
[-- Attachment #2: SGI-LOCKDEBUG.txt --]
[-- Type: text/plain, Size: 1068 bytes --]
Sep 26 16:08:15 localhost BUG: spinlock lockup on CPU#0, sshd/1876, a8000000003c7868
Sep 26 16:08:15 localhost loops-per-jiffy 110592 hz 1000
Sep 26 16:08:15 localhost owner ffffffffffffffff cpu -1 locked 0
Sep 26 16:08:15 localhost Call Trace:
Sep 26 16:08:15 localhost [<a8000000001e5da0>] _raw_spin_lock+0x220/0x2c8
Sep 26 16:08:15 localhost [<a80000000032c63c>] _spin_lock_irqsave+0x24/0x38
Sep 26 16:08:15 localhost [<a8000000001f4d60>] tty_ldisc_try+0x38/0x80
Sep 26 16:08:15 localhost [<a8000000001f634c>] tty_ldisc_ref_wait+0x1c/0x100
Sep 26 16:08:15 localhost [<a80000000032c63c>] _spin_lock_irqsave+0x24/0x38
Sep 26 16:08:15 localhost [<a8000000001f64b8>] tty_poll+0x88/0xd8
Sep 26 16:08:15 localhost [<a8000000000df9d0>] do_select+0x298/0x4c0
Sep 26 16:08:15 localhost [<a8000000000dfbf8>] __pollwait+0x0/0x118
Sep 26 16:08:15 localhost [<a8000000000de9d8>] vfs_ioctl+0x80/0x400
Sep 26 16:08:15 localhost [<a800000000100e48>] compat_sys_select+0x318/0x710
Sep 26 16:08:15 localhost [<a8000000000396b4>] handle_sysn32+0x54/0xa4
Sep 26 16:08:15 localhost
next reply other threads:[~2006-09-28 18:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-28 18:24 Peter Watkins [this message]
2006-09-28 23:59 ` SGI Origin 200 (ip27) with DEBUG_SPINLOCK Ralf Baechle
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=451C134C.6010806@gmail.com \
--to=treestem@gmail.com \
--cc=linux-mips@linux-mips.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