From: Jeff Hartmann <jhartmann@valinux.com>
To: imran.badr@cavium.com
Cc: linux-kernel@vger.kernel.org
Subject: Re: how to check whether other threads are waiting ..
Date: Fri, 10 Aug 2001 15:49:22 -0600 [thread overview]
Message-ID: <3B7456E2.4090507@valinux.com> (raw)
In-Reply-To: <001701c121e3$612a27d0$6401a8c0@IMRANPC>
Imran Badr wrote:
> Hi,
>
> How can I find out in my kernel code that if mutiple threads are waiting for
> a particular semaphore?
>
> Thanks,
> imran.
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
>
I haven't looked at the semaphore implementation for other arch's
closely, but on the ia32 there is a waitqueue in struct semaphore.
Examine that to detrimine if there are processes waiting, how many, etc.
-Jeff
prev parent reply other threads:[~2001-08-10 21:51 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-10 20:04 [PATCH] Too many disk writes in 2.4.8-pre8 Peter Osterlund
2001-08-10 21:28 ` how to check whether other threads are waiting Imran Badr
2001-08-10 21:49 ` Jeff Hartmann [this message]
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=3B7456E2.4090507@valinux.com \
--to=jhartmann@valinux.com \
--cc=imran.badr@cavium.com \
--cc=linux-kernel@vger.kernel.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