just for the fun of it, i tried doing a build with "C=1" and got a
pile of errors:
...
CHECK init/main.c
include/linux/spinlock_api_smp.h:22:47: error: undefined identifier 'lock'
include/linux/spinlock_api_smp.h:22:47: error: bad constant expression
include/linux/spinlock_api_smp.h:24:8: error: undefined identifier 'lock'
include/linux/spinlock_api_smp.h:24:8: error: bad constant expression
...
which corresponds to this:
void __lockfunc _spin_lock(spinlock_t *lock) __acquires(lock);
void __lockfunc _spin_lock_nested(spinlock_t *lock, int subclass)
__acquires(lock);
it's those "__acquires(lock)" attributes that are causing the problem,
which are defined thusly when doing this kind of check:
# define __acquires(x) __attribute__((context(x,0,1)))
# define __releases(x) __attribute__((context(x,1,0)))
ok, so ... can someone explain what's happening here as i don't know
squat about this particular gcc attribute. thanks.
rday
--
========================================================================
Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry
Waterloo, Ontario, CANADA
http://fsdev.net/wiki/index.php?title=Main_Page
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