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Fix grammar in some comments in subr_sleepqueue.c

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While I'm here, remove trailing whitespace.

Reviewed by:	kib, mostly, as part of a larger review
MFC after:	3 days
This commit is contained in:
Eric van Gyzen 2017-03-03 21:03:28 +00:00
parent 7813302434
commit 8a8bea603c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=314626
1 changed files with 7 additions and 7 deletions
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14
sys/kern/subr_sleepqueue.c
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@ -26,7 +26,7 @@
/*
* Implementation of sleep queues used to hold queue of threads blocked on
* a wait channel. Sleep queues different from turnstiles in that wait
* a wait channel. Sleep queues are different from turnstiles in that wait
* channels are not owned by anyone, so there is no priority propagation.
* Sleep queues can also provide a timeout and can also be interrupted by
* signals. That said, there are several similarities between the turnstile
@ -36,7 +36,7 @@
* a linked list of queues. An individual queue is located by using a hash
* to pick a chain, locking the chain, and then walking the chain searching
* for the queue. This means that a wait channel object does not need to
* embed it's queue head just as locks do not embed their turnstile queue
* embed its queue head just as locks do not embed their turnstile queue
* head. Threads also carry around a sleep queue that they lend to the
* wait channel when blocking. Just as in turnstiles, the queue includes
* a free list of the sleep queues of other threads blocked on the same
@ -98,7 +98,7 @@ __FBSDID("$FreeBSD$");
#define SC_LOOKUP(wc) &sleepq_chains[SC_HASH(wc)]
#define NR_SLEEPQS 2
/*
* There two different lists of sleep queues. Both lists are connected
* There are two different lists of sleep queues. Both lists are connected
* via the sq_hash entries. The first list is the sleep queue chain list
* that a sleep queue is on when it is attached to a wait channel. The
* second list is the free list hung off of a sleep queue that is attached
@ -183,7 +183,7 @@ init_sleepqueue_profiling(void)
for (i = 0; i < SC_TABLESIZE; i++) {
snprintf(chain_name, sizeof(chain_name), "%u", i);
chain_oid = SYSCTL_ADD_NODE(NULL,
chain_oid = SYSCTL_ADD_NODE(NULL,
SYSCTL_STATIC_CHILDREN(_debug_sleepq_chains), OID_AUTO,
chain_name, CTLFLAG_RD, NULL, "sleepq chain stats");
SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(chain_oid), OID_AUTO,
@ -218,7 +218,7 @@ init_sleepqueues(void)
#else
NULL, NULL, sleepq_init, NULL, UMA_ALIGN_CACHE, 0);
#endif
thread0.td_sleepqueue = sleepq_alloc();
}
@ -545,7 +545,7 @@ sleepq_switch(void *wchan, int pri)
mtx_assert(&sc->sc_lock, MA_OWNED);
THREAD_LOCK_ASSERT(td, MA_OWNED);
/*
/*
* If we have a sleep queue, then we've already been woken up, so
* just return.
*/
@ -572,7 +572,7 @@ sleepq_switch(void *wchan, int pri)
#endif
}
mtx_unlock_spin(&sc->sc_lock);
return;
return;
}
#ifdef SLEEPQUEUE_PROFILING
if (prof_enabled)