diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2011-07-30 04:26:39 +0400 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2011-08-27 18:35:13 +0400 |
| commit | 4fcf812ca392303aa79dd50e96e83a29faa13bd0 (patch) | |
| tree | 411c33d701989b44ba2f4ecb64fd0cba92214958 /drivers/scsi/libsas/sas_init.c | |
| parent | 7ca3c803e85080afdff4097e60fefec865027809 (diff) | |
| download | linux-4fcf812ca392303aa79dd50e96e83a29faa13bd0.tar.xz | |
[SCSI] libsas: export sas_alloc_task()
Now that isci has added a 3rd open coded user of this functionality just
share the libsas version.
Acked-by: Jack Wang <jack_wang@usish.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/libsas/sas_init.c')
| -rw-r--r-- | drivers/scsi/libsas/sas_init.c | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/drivers/scsi/libsas/sas_init.c b/drivers/scsi/libsas/sas_init.c index 2dc55343f671..dd56ea827665 100644 --- a/drivers/scsi/libsas/sas_init.c +++ b/drivers/scsi/libsas/sas_init.c @@ -37,7 +37,32 @@ #include "../scsi_sas_internal.h" -struct kmem_cache *sas_task_cache; +static struct kmem_cache *sas_task_cache; + +struct sas_task *sas_alloc_task(gfp_t flags) +{ + struct sas_task *task = kmem_cache_zalloc(sas_task_cache, flags); + + if (task) { + INIT_LIST_HEAD(&task->list); + spin_lock_init(&task->task_state_lock); + task->task_state_flags = SAS_TASK_STATE_PENDING; + init_timer(&task->timer); + init_completion(&task->completion); + } + + return task; +} +EXPORT_SYMBOL_GPL(sas_alloc_task); + +void sas_free_task(struct sas_task *task) +{ + if (task) { + BUG_ON(!list_empty(&task->list)); + kmem_cache_free(sas_task_cache, task); + } +} +EXPORT_SYMBOL_GPL(sas_free_task); /*------------ SAS addr hash -----------*/ void sas_hash_addr(u8 *hashed, const u8 *sas_addr) @@ -293,8 +318,7 @@ EXPORT_SYMBOL_GPL(sas_domain_release_transport); static int __init sas_class_init(void) { - sas_task_cache = kmem_cache_create("sas_task", sizeof(struct sas_task), - 0, SLAB_HWCACHE_ALIGN, NULL); + sas_task_cache = KMEM_CACHE(sas_task, SLAB_HWCACHE_ALIGN); if (!sas_task_cache) return -ENOMEM; |