Messages in this thread | | | Date | Wed, 19 Jun 2013 18:21:14 +0800 | From | Chen Gang <> | Subject | Re: [PATCH] kernel/timer.c: using spin_lock_irqsave instead of spin_lock + local_irq_save, especially when CONFIG_LOCKDEP not defined |
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On 06/19/2013 05:59 PM, Thomas Gleixner wrote: > I'm well aware how that works. And there is no difference whether you > do: > > local_irq_save(flags); > spin_lock(&lock); > or > spin_lock_irqsave(&lock, flags);
if CONFIG_LOCKDEP is not defined, they are not semantically the same.
Thanks. -- Chen Gang
Asianux Corporation
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