On 3/8/07, Arjan van de Ven <arjan@xxxxxxxxxxxxx> wrote:
On Tue, 2007-03-06 at 11:25 +0000, my linux wrote:
> Hi,
>
> How can I know whether my machine booted with SMP and non-SMP
> kernel ? ( from kernel space)
that sounds like a weird thing to care about; drivers or anything but
deep architecture code really shouldn't have this knowledge!
(for example preempt kernels basically make you have the same rules as
smp anyway)
#ifdef CONFIG_SMP
lock_kernel();
#endif
#ifdef CONFIG_PREEMPT
preempt_disable();
#endif
Is equivalant to
lock_kernel();
preempt_disable();
in UP/SMP and preempt/non-preempt configuration ?
-mln
