diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2009-09-08 17:55:21 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2009-09-08 17:55:21 -0700 |
| commit | bbb20089a3275a19e475dbc21320c3742e3ca423 (patch) | |
| tree | 216fdc1cbef450ca688135c5b8969169482d9a48 /kernel/slow-work.c | |
| parent | 3e48e656903e9fd8bc805c6a2c4264d7808d315b (diff) | |
| parent | 657a77fa7284d8ae28dfa48f1dc5d919bf5b2843 (diff) | |
Merge branch 'dmaengine' into async-tx-next
Conflicts:
crypto/async_tx/async_xor.c
drivers/dma/ioat/dma_v2.h
drivers/dma/ioat/pci.c
drivers/md/raid5.c
Diffstat (limited to 'kernel/slow-work.c')
| -rw-r--r-- | kernel/slow-work.c | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/kernel/slow-work.c b/kernel/slow-work.c index b28d19135f4..09d7519557d 100644 --- a/kernel/slow-work.c +++ b/kernel/slow-work.c @@ -319,6 +319,15 @@ cant_get_ref: EXPORT_SYMBOL(slow_work_enqueue); /* + * Schedule a cull of the thread pool at some time in the near future + */ +static void slow_work_schedule_cull(void) +{ + mod_timer(&slow_work_cull_timer, + round_jiffies(jiffies + SLOW_WORK_CULL_TIMEOUT)); +} + +/* * Worker thread culling algorithm */ static bool slow_work_cull_thread(void) @@ -335,8 +344,7 @@ static bool slow_work_cull_thread(void) list_empty(&vslow_work_queue) && atomic_read(&slow_work_thread_count) > slow_work_min_threads) { - mod_timer(&slow_work_cull_timer, - jiffies + SLOW_WORK_CULL_TIMEOUT); + slow_work_schedule_cull(); do_cull = true; } } @@ -372,8 +380,8 @@ static int slow_work_thread(void *_data) vsmax *= atomic_read(&slow_work_thread_count); vsmax /= 100; - prepare_to_wait(&slow_work_thread_wq, &wait, - TASK_INTERRUPTIBLE); + prepare_to_wait_exclusive(&slow_work_thread_wq, &wait, + TASK_INTERRUPTIBLE); if (!freezing(current) && !slow_work_threads_should_exit && !slow_work_available(vsmax) && @@ -393,8 +401,7 @@ static int slow_work_thread(void *_data) list_empty(&vslow_work_queue) && atomic_read(&slow_work_thread_count) > slow_work_min_threads) - mod_timer(&slow_work_cull_timer, - jiffies + SLOW_WORK_CULL_TIMEOUT); + slow_work_schedule_cull(); continue; } @@ -458,7 +465,7 @@ static void slow_work_new_thread_execute(struct slow_work *work) if (atomic_dec_and_test(&slow_work_thread_count)) BUG(); /* we're running on a slow work thread... */ mod_timer(&slow_work_oom_timer, - jiffies + SLOW_WORK_OOM_TIMEOUT); + round_jiffies(jiffies + SLOW_WORK_OOM_TIMEOUT)); } else { /* ratelimit the starting of new threads */ mod_timer(&slow_work_oom_timer, jiffies + 1); @@ -502,8 +509,7 @@ static int slow_work_min_threads_sysctl(struct ctl_table *table, int write, if (n < 0 && !slow_work_may_not_start_new_thread) slow_work_enqueue(&slow_work_new_thread); else if (n > 0) - mod_timer(&slow_work_cull_timer, - jiffies + SLOW_WORK_CULL_TIMEOUT); + slow_work_schedule_cull(); } mutex_unlock(&slow_work_user_lock); } @@ -529,8 +535,7 @@ static int slow_work_max_threads_sysctl(struct ctl_table *table, int write, atomic_read(&slow_work_thread_count); if (n < 0) - mod_timer(&slow_work_cull_timer, - jiffies + SLOW_WORK_CULL_TIMEOUT); + slow_work_schedule_cull(); } mutex_unlock(&slow_work_user_lock); } |