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Added possibility to disable cleaner thread.

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In case of cleaner thread retrived 'OCF_CLEANER_DISABLE' no cleaning is
performed until kick is called.

Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
This commit is contained in:
Michal Mielewczyk
2019-04-29 09:51:51 -04:00
parent 64a79086a8
commit 095ccc51fe
4 changed files with 33 additions and 3 deletions
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27
modules/cas_cache/threads.c
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@@ -89,11 +89,27 @@ static int _cas_cleaner_thread(void *data)
ocf_cleaner_set_cmpl(c, _cas_cleaner_complete);
do {
if (atomic_read(&info->stop))
break;
atomic_set(&info->kicked, 0);
init_completion(&info->sync_compl);
ocf_cleaner_run(c, cache_priv->io_queues[smp_processor_id()]);
wait_for_completion(&info->sync_compl);
} while (0 == wait_event_interruptible_timeout(info->wq,
atomic_read(&info->stop), msecs_to_jiffies(ms)));
/*
* In case of nop cleaning policy we don't want to perform cleaning
* until cleaner_kick() is called.
*/
if (ms == OCF_CLEANER_DISABLE) {
wait_event_interruptible(info->wq, atomic_read(&info->kicked) ||
atomic_read(&info->stop));
} else {
wait_event_interruptible_timeout(info->wq,
atomic_read(&info->kicked) || atomic_read(&info->stop),
msecs_to_jiffies(ms));
}
} while (true);
complete_and_exit(&info->compl, 0);
@@ -241,6 +257,13 @@ int cas_create_cleaner_thread(ocf_cleaner_t c)
return result;
}
void cas_kick_cleaner_thread(ocf_cleaner_t c)
{
struct cas_thread_info *info = ocf_cleaner_get_priv(c);
atomic_set(&info->kicked, 1);
wake_up(&info->wq);
}
void cas_stop_cleaner_thread(ocf_cleaner_t c)
{
struct cas_thread_info *info = ocf_cleaner_get_priv(c);