Re: [PATCH 2/2] I-pipe: x86 port

From: Philippe Gerum
Date: Tue Jun 21 2005 - 04:32:24 EST

Daniel Walker wrote:
On Sat, 2005-06-18 at 01:21 +0200, Philippe Gerum wrote:

+#define local_save_flags(x) ((x) = __ipipe_test_root())
+#define local_irq_save(x) ((x) = __ipipe_test_and_stall_root())
+#define local_irq_restore(x) __ipipe_restore_root(x)
+#define local_irq_disable() __ipipe_stall_root()
+#define local_irq_enable() __ipipe_unstall_root()
+#define irqs_disabled() __ipipe_test_root()

If you want to integrate with newer RT patches , (I'm not sure which one
this is on) ..

This patch only inherits the basic conditionals for integrating with PREEMPT_RT from a recent Adeos combo experimenting the issue w/ 0.7.44-03, but there is indeed more to do for completing the integration with recent PREEMPT_RT patches.

You could modify the above so that it uses the soft irq's
off flags . So if linux is in a soft irq disable than it's equal to a
stall on the ipipe ..

Ack. I will provide a newer combo patch using PREEMPT_RT's virtualized local_irq_disable for the root domain. Thanks for the hint.


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at