Re: [patch] Real-Time Preemption, -VP-2.6.9-rc4-mm1-U0

[Karim Yaghmour]

Ingo Molnar wrote:
>   http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc4-mm1-U0

I notice:
+	local_irq_save(flags);
+	____trace(&__get_cpu_var(trace), eip, parent_eip);
+	local_irq_restore(flags);

Why not use the lockless logging available in relayfs, you'll avoid the
interrupt disabling altogether since, umm ... it's lockless.

Karim
--
Author, Speaker, Developer, Consultant
Pushing Embedded and Real-Time Linux Systems Beyond the Limits
http://www.opersys.com || karim@xxxxxxxxxxx || 1-866-677-4546

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/