On Wed, 24 Oct 2007 18:00:19 +1000 Nick Piggin wrote: > On Wednesday 24 October 2007 15:09, Randy Dunlap wrote: > > From: Randy Dunlap <[EMAIL PROTECTED]> > > > > Can we expand this macro definition, or should I look for a way to > > fool^W teach kernel-doc about this? > > > > scripts/kernel-doc says: > > Error(linux-2.6.24-rc1//include/asm-x86/bitops_32.h:188): cannot understand > > prototype: 'test_and_set_bit_lock test_and_set_bit ' > > Actually, it probably looks a bit nicer like this anyway. If you grep > for it, then you can actually see the parameters... > > On third thoughts, an inline function might be the best thing to do, > and also avoid setting a bad example. What do you think?
--- From: Randy Dunlap <[EMAIL PROTECTED]> Use duplicated inline functions for test_and_set_bit_lock() on x86 instead of #define macros, thus avoiding a bad example. This allows kernel-doc to run cleanly instead of terminating with an error: Error(linux-2.6.24-rc1//include/asm-x86/bitops_32.h:188): cannot understand prototype: 'test_and_set_bit_lock test_and_set_bit ' Signed-off-by: Randy Dunlap <[EMAIL PROTECTED]> --- include/asm-x86/bitops_32.h | 13 +++++++++++-- include/asm-x86/bitops_64.h | 13 +++++++++++-- 2 files changed, 22 insertions(+), 4 deletions(-) --- linux-2.6.24-rc1.orig/include/asm-x86/bitops_32.h +++ linux-2.6.24-rc1/include/asm-x86/bitops_32.h @@ -183,9 +183,18 @@ static inline int test_and_set_bit(int n * @nr: Bit to set * @addr: Address to count from * - * This is the same as test_and_set_bit on x86 + * This is the same as test_and_set_bit on x86. */ -#define test_and_set_bit_lock test_and_set_bit +static inline int test_and_set_bit_lock(int nr, volatile unsigned long * addr) +{ + int oldbit; + + __asm__ __volatile__( LOCK_PREFIX + "btsl %2,%1\n\tsbbl %0,%0" + :"=r" (oldbit),"+m" (ADDR) + :"Ir" (nr) : "memory"); + return oldbit; +} /** * __test_and_set_bit - Set a bit and return its old value --- linux-2.6.24-rc1.orig/include/asm-x86/bitops_64.h +++ linux-2.6.24-rc1/include/asm-x86/bitops_64.h @@ -173,9 +173,18 @@ static __inline__ int test_and_set_bit(i * @nr: Bit to set * @addr: Address to count from * - * This is the same as test_and_set_bit on x86 + * This is the same as test_and_set_bit on x86. */ -#define test_and_set_bit_lock test_and_set_bit +static __inline__ int test_and_set_bit_lock(int nr, volatile void * addr) +{ + int oldbit; + + __asm__ __volatile__( LOCK_PREFIX + "btsl %2,%1\n\tsbbl %0,%0" + :"=r" (oldbit),ADDR + :"dIr" (nr) : "memory"); + return oldbit; +} /** * __test_and_set_bit - Set a bit and return its old value - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/