226  * The sobj_ops vector exports a set of functions needed when a thread
 227  * is asleep on a synchronization object of this type.
 228  */
 229 static sobj_ops_t mutex_sobj_ops = {
 230         SOBJ_MUTEX, mutex_owner, turnstile_stay_asleep, turnstile_change_pri
 231 };
 232 
 233 /*
 234  * If the system panics on a mutex, save the address of the offending
 235  * mutex in panic_mutex_addr, and save the contents in panic_mutex.
 236  */
 237 static mutex_impl_t panic_mutex;
 238 static mutex_impl_t *panic_mutex_addr;
 239 
 240 static void
 241 mutex_panic(char *msg, mutex_impl_t *lp)
 242 {
 243         if (panicstr)
 244                 return;
 245 
 246         if (casptr(&panic_mutex_addr, NULL, lp) == NULL)
 247                 panic_mutex = *lp;
 248 
 249         panic("%s, lp=%p owner=%p thread=%p",
 250             msg, (void *)lp, (void *)MUTEX_OWNER(&panic_mutex),
 251             (void *)curthread);
 252 }
 253 
 254 /* "tunables" for per-platform backoff constants. */
 255 uint_t mutex_backoff_cap = 0;
 256 ushort_t mutex_backoff_base = MUTEX_BACKOFF_BASE;
 257 ushort_t mutex_cap_factor = MUTEX_CAP_FACTOR;
 258 uchar_t mutex_backoff_shift = MUTEX_BACKOFF_SHIFT;
 259 
 260 void
 261 mutex_sync(void)
 262 {
 263         MUTEX_SYNC();
 264 }
 265 
 266 /* calculate the backoff interval */

 226  * The sobj_ops vector exports a set of functions needed when a thread
 227  * is asleep on a synchronization object of this type.
 228  */
 229 static sobj_ops_t mutex_sobj_ops = {
 230         SOBJ_MUTEX, mutex_owner, turnstile_stay_asleep, turnstile_change_pri
 231 };
 232 
 233 /*
 234  * If the system panics on a mutex, save the address of the offending
 235  * mutex in panic_mutex_addr, and save the contents in panic_mutex.
 236  */
 237 static mutex_impl_t panic_mutex;
 238 static mutex_impl_t *panic_mutex_addr;
 239 
 240 static void
 241 mutex_panic(char *msg, mutex_impl_t *lp)
 242 {
 243         if (panicstr)
 244                 return;
 245 
 246         if (atomic_cas_ptr(&panic_mutex_addr, NULL, lp) == NULL)
 247                 panic_mutex = *lp;
 248 
 249         panic("%s, lp=%p owner=%p thread=%p",
 250             msg, (void *)lp, (void *)MUTEX_OWNER(&panic_mutex),
 251             (void *)curthread);
 252 }
 253 
 254 /* "tunables" for per-platform backoff constants. */
 255 uint_t mutex_backoff_cap = 0;
 256 ushort_t mutex_backoff_base = MUTEX_BACKOFF_BASE;
 257 ushort_t mutex_cap_factor = MUTEX_CAP_FACTOR;
 258 uchar_t mutex_backoff_shift = MUTEX_BACKOFF_SHIFT;
 259 
 260 void
 261 mutex_sync(void)
 262 {
 263         MUTEX_SYNC();
 264 }
 265 
 266 /* calculate the backoff interval */