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27 March 2024, 02:37:15 UTC
Revision 688ce17b8599abc548b406c00e4d18ae0dec954f authored by Al Viro on 16 October 2005, 07:17:33 UTC, committed by David S. Miller on 16 October 2005, 07:17:33 UTC 
[PATCH]: highest_possible_processor_id() has to be a macro
 
	... otherwise, things like alpha and sparc64 break and break
badly.  They define cpu_possible_map to something else in smp.h
*AFTER* having included cpumask.h.

	If that puppy is a macro, expansion will happen at the actual
caller, when we'd already seen #define cpu_possible_map ... and we will
get the right thing used.

	As an inline helper it will be tokenized before we get to that
define and that's it; no matter what we define later, it won't affect
anything.  We get modules with dependency on cpu_possible_map instead
of the right symbol (phys_cpu_present_map in case of sparc64), or outright
link errors if they are built-in.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent e6850cc
History
Tip revision: 688ce17b8599abc548b406c00e4d18ae0dec954f authored by Al Viro on 16 October 2005, 07:17:33 UTC
[PATCH]: highest_possible_processor_id() has to be a macro
Tip revision: 688ce17
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