Cross Reference: /illumos-gate/usr/src/uts/common/syscall/poll.c

Lines Matching refs:pc_lock
132  *	is on that pollhead. This is modified atomically under pc_lock.
136  *	This is modified atomically under pc_lock.
153  * The two key locks in poll proper is ps_lock and pc_lock.
160  * The pc_lock protects most of the fields in pollcache structure and polldat
169  * Poll(2) system call is the only path which ps_lock and pc_lock are both
171  * lwp_exit; and pc_lock with pollwakeup.
173  * The locking interaction between pc_lock and PHLOCK take into account
174  * that poll acquires these locks in the order of pc_lock and then PHLOCK
184  * The locking interaction between pc_lock and uf_lock has similar
185  * issues. Poll holds ps_lock and/or pc_lock across calls to getf/releasef
188  * might exit. But the cleanup needs to acquire pc_lock when modifying
194  *	This routine can then acquire pc_lock and remove any references
206  *	ps_lock is held when acquiring pc_lock (except when pollwakeup
207  *	acquires pc_lock).
208  *	pc_lock might be held when acquiring PHLOCK (pollhead_insert/
210  *	pc_lock is always held (but this is not required)
213  *	pc_lock is held across addfpollinfo/delfpollinfo which acquire
215  *	pc_lock is held across getf/releasef which acquire uf_lock.
217  *	pollwakeup tries to acquire pc_lock while holding PHLOCK
272 	if (!mutex_owned(&pcp->pc_lock)) {
276 		mutex_exit(&pcp->pc_lock);
301 	mutex_enter(&pcp->pc_lock);
548 	mutex_enter(&pcp->pc_lock);
553 			mutex_exit(&pcp->pc_lock);
561 		 * one of the VOP_POLL() functions dropped pcp->pc_lock.
579 			    &pcp->pc_lock, deadline);
581 		mutex_exit(&pcp->pc_lock);
595 		mutex_enter(&pcp->pc_lock);
722 		 * need to hold the pc_lock.
844 			if (mutex_tryenter(&pcp->pc_lock)) {
846 				mutex_exit(&pcp->pc_lock);
872 				mutex_enter(&pcp->pc_lock);
873 				mutex_exit(&pcp->pc_lock);
928 	ASSERT(MUTEX_HELD(&pcp->pc_lock));
1165 	ASSERT(mutex_owned(&pcp->pc_lock) == 0);
1166 	mutex_enter(&pcp->pc_lock);
1173 	mutex_exit(&pcp->pc_lock);
1400 	mutex_enter(&pcp->pc_lock);
1402 	mutex_exit(&pcp->pc_lock);
1446 		mutex_enter(&pcp->pc_lock);
1448 		mutex_exit(&pcp->pc_lock);
1459 		mutex_enter(&pcp->pc_lock);
1461 		mutex_exit(&pcp->pc_lock);
1883 	ASSERT(MUTEX_HELD(&pcp->pc_lock));
2260 	ASSERT(MUTEX_HELD(&pcp->pc_lock));
2332 	if (mutex_tryenter(&pcp->pc_lock) != 0) {
2415 	mutex_enter(&pcp->pc_lock);
2426 		mutex_exit(&pcp->pc_lock);
2474 		mutex_enter(&pcp->pc_lock);
2475 	} else if (mutex_tryenter(&pcp->pc_lock) == 0) {
2494 	mutex_exit(&pcp->pc_lock);
2965 	mutex_destroy(&pcp->pc_lock);