Re: [RFC PATCH 15/35] subarch support for controlling interrupt delivery

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Christian Limpach wrote:
On Tue, May 09, 2006 at 07:49:42AM -0700, Martin J. Bligh wrote:

+#define __cli()							 \
+do {									\
+	struct vcpu_info *_vcpu;					\
+	preempt_disable();						\
+	_vcpu = &HYPERVISOR_shared_info->vcpu_info[__vcpu_id];		\
+	_vcpu->evtchn_upcall_mask = 1;					\
+	preempt_enable_no_resched();					\
+	barrier();							\
+} while (0)

Should be a real function


Yes, except it's not trivially done because if __cli was an inline
function, you need to have everything that is used in the declaration
defined when the function is declared as opposed to when the #define
gets used.  I'll give it another try, but it very quickly becomes
#include hell.

Anybody want to comment on the performance impact of making
local_irq_* non-inline functions?

I wasn't concerned with inline vs non-inline - that's your choice.
Just the inherent foulness of multi-line macros ;-)

M.


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