Re: [PATCH] Linux Kernel Markers 0.11 for 2.6.17

[Mathieu Desnoyers]

* Jeremy Fitzhardinge (jeremy@xxxxxxxx) wrote:
> Mathieu Desnoyers wrote:
> >Better idea : we could put a read/write dependency on a memory location.
> >  
> 
> Yes, that works well.  And it needn't even exist:
> 
> 	extern int __marker_sequencer;		/* doesn't exist, never 
> 	referenced */
> 
> 	asm volatile("first asm" : "+m" (__marker_sequencer));
> 
> 	asm volatile("second asm" : "+m" (__marker_sequencer));
> 
> This keeps the asms ordered with respect to each other (and prevents to 
> independent markers from being intermingled), but it doesn't prevent 
> them from being re-ordered with respect to other code.
> 
I will declare the pointers around the jmp instruction directly in assembly : I
wouldn't want gcc to put some other code there by mistake.

I will use the "name" variable, as it is already there.

A new version coming soon...

Thank you very much!

Mathieu

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