Differential D29988 Diff 88178 sys/compat/linuxkpi/common/include/linux/spinlock.h

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sys/compat/linuxkpi/common/include/linux/spinlock.h

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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF		* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.		* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*		*
* $FreeBSD$		* $FreeBSD$
*/		*/
#ifndef _LINUX_SPINLOCK_H_		#ifndef _LINUX_SPINLOCK_H_
#define _LINUX_SPINLOCK_H_		#define _LINUX_SPINLOCK_H_

		#include <asm/atomic.h>
#include <sys/param.h>		#include <sys/param.h>
#include <sys/kernel.h>		#include <sys/kernel.h>
#include <sys/lock.h>		#include <sys/lock.h>
#include <sys/mutex.h>		#include <sys/mutex.h>
#include <sys/kdb.h>		#include <sys/kdb.h>

#include <linux/compiler.h>		#include <linux/compiler.h>
#include <linux/rwlock.h>		#include <linux/rwlock.h>
▲ Show 20 Lines • Show All 112 Lines • ▼ Show 20 Lines	#define DEFINE_SPINLOCK(lock) \
spinlock_t lock; \		spinlock_t lock; \
MTX_SYSINIT(lock, &(lock).m, spin_lock_name("lnxspin"), MTX_DEF)		MTX_SYSINIT(lock, &(lock).m, spin_lock_name("lnxspin"), MTX_DEF)

#define assert_spin_locked(_l) do { \		#define assert_spin_locked(_l) do { \
if (SPIN_SKIP()) \		if (SPIN_SKIP()) \
break; \		break; \
mtx_assert(&(_l)->m, MA_OWNED); \		mtx_assert(&(_l)->m, MA_OWNED); \
} while (0)		} while (0)

		static inline int
		atomic_dec_and_lock_irqsave(atomic_t cnt, spinlock_t lock,
		unsigned long flags)
		{
		spin_lock_irqsave(lock, flags);
		if (atomic_dec_and_test(cnt)) {
		hselaskyUnsubmitted Not Done Inline Actions Don't need brackets around this return. hselasky: Don't need brackets around this return.
		return (1);
		}
		spin_unlock_irqrestore(lock, flags);
		return (0);
		hselaskyUnsubmitted Not Done Inline Actions Parenthesis around return result is fine. hselasky: Parenthesis around return result is fine.
		}

#endif /* _LINUX_SPINLOCK_H_ */		#endif /* _LINUX_SPINLOCK_H_ */