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Minor improvement to taskq handling. This is a small step towards

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dynamic taskqs which still need to be fully implemented.


git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@87 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
This commit is contained in:
behlendo 2008-04-23 21:19:47 +00:00
parent 18c9eadf97
commit 6e605b6e58
2 changed files with 17 additions and 7 deletions
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2
include/sys/debug.h
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@ -198,7 +198,7 @@ do { \
do { \
if (unlikely(!(cond))) { \
printk(KERN_ERR "ASSERTION(" #cond ") failed"); \
SBUG(); \
BUG(); \
} \
} while (0)

22
modules/spl/spl-taskq.c
View File

@ -66,10 +66,14 @@ __taskq_dispatch(taskq_t *tq, task_func_t func, void *priv, uint_t flags)
}
EXPORT_SYMBOL(__taskq_dispatch);
/* XXX - Most args ignored until we decide if it's worth the effort
* to emulate the solaris notion of dynamic thread pools. For
* now we simply serialize everything through one thread which
* may come back to bite us as a performance issue.
/* XXX - We must fully implement dynamic workqueues since they make a
* significant impact in terms of performance. For now I've made
* a trivial compromise. If you ask for one thread you get one
* thread, if you ask for more than that you get one per core.
* It's unclear if you ever really need/want more than one per-core
* anyway. More analysis is required.
*
* name - Workqueue names are limited to 10 chars
* pri - Ignore priority
* min - Ignored until this is a dynamic thread pool
* max - Ignored until this is a dynamic thread pool
@ -79,9 +83,15 @@ taskq_t *
__taskq_create(const char *name, int nthreads, pri_t pri,
int minalloc, int maxalloc, uint_t flags)
{
/* NOTE: Linux workqueue names are limited to 10 chars */
taskq_t *tq;
ENTRY;
RETURN(create_singlethread_workqueue(name));
if (nthreads == 1)
tq = create_singlethread_workqueue(name);
else
tq = create_workqueue(name);
return tq;
}
EXPORT_SYMBOL(__taskq_create);