why use spin_lock_{irq, irqsave}()
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- Subject: why use spin_lock_{irq, irqsave}()
- From: अनुज <anuj01@xxxxxxxxx>
- Date: Mon, 29 Mar 2010 23:25:34 +0530
Hi list
Please anybody elaborate on this point : When we take any lock in
kernel e.g. spin_lock() then preemption is automatically disabled by
kernel. Then why to use spin_lock_{irq, irqsave}()? I am assuming even
interrupt handler cant preempt the kernel when preemption is disabled
by kernel.
Thanks,
Regards
--
Anuj Aggarwal
.''`.
: :Ⓐ : # apt-get install hakuna-matata
`. `'`
`-
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