From: kernelkracker <isys1@home.com>
To: linux-kernel@vger.kernel.org
Subject: global_irq_count vs global_irq_lock
Date: Thu, 16 Aug 2001 11:30:07 -0700 [thread overview]
Message-ID: <3B7C112F.1F2D183B@home.com> (raw)
Hello,
This is probably a kernel newbie question so my apologies in advance.
I have a design/implementation question.
global_irq_count is defined as atomic_t whereas globall_irq_lock is
defined as unsigned volatiile int.
Is this by design? or by chance?
Why would you be concerned about reading global_irq_count atomically and
not global_irq_count as it is done is several
functions in linux/arch/i386/irq.c in kernel 2.2.18.
If it is by design, what am I missing.
Please cc me on your respone as I am not on the list.
Take care!
reply other threads:[~2001-08-16 17:39 UTC|newest]
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