From: mulyadi.santosa@gmail.com (Mulyadi Santosa)
To: kernelnewbies@lists.kernelnewbies.org
Subject: how to test a linux driver for SMP concurrency issues
Date: Tue, 28 Jun 2011 22:34:25 +0700 [thread overview]
Message-ID: <BANLkTimMJsjqk+FT+xvqo-YeK=xeuzvYpQ@mail.gmail.com> (raw)
In-Reply-To: <BANLkTimMADhwdJR=jOXSL=h+a5g-SN9doA@mail.gmail.com>
Hi AMit...
On Tue, Jun 28, 2011 at 19:36, Amit Nagal <helloin.amit@gmail.com> wrote:
> Hi ,
>
> i want to test a linux driver to identify concurrecy issue that may
> arise on a SMP system .
> can i be advised with ?usage of some tools / mechanisms , so that the
> driver can be made SMP safe ?
IMHO there is no easy answer here. What you need is careful code audit
and check the way you access shared resources
(variables/structures/etc).
Whenever you encounter such operations, decide whether you wanna make
it as fast path (must be done real quick) or slow path (longer delay
is acceptable).
In fast path, put spin locks locking/unlocking. In slow path, you
might use mutex or any kind of blocking locking.
--
regards,
Mulyadi Santosa
Freelance Linux trainer and consultant
blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com
prev parent reply other threads:[~2011-06-28 15:34 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-28 12:36 how to test a linux driver for SMP concurrency issues Amit Nagal
2011-06-28 12:51 ` Daniel Baluta
2011-06-28 15:34 ` Mulyadi Santosa [this message]
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