[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>
diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c
index d6bcdd0..e2d9418 100644
--- a/drivers/scsi/isci/task.c
+++ b/drivers/scsi/isci/task.c
@@ -1345,29 +1345,6 @@
complete(&task->completion);
}
-static struct sas_task *isci_alloc_task(void)
-{
- struct sas_task *task = kzalloc(sizeof(*task), GFP_KERNEL);
-
- 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;
-}
-
-static void isci_free_task(struct isci_host *ihost, struct sas_task *task)
-{
- if (task) {
- BUG_ON(!list_empty(&task->list));
- kfree(task);
- }
-}
-
static int isci_smp_execute_task(struct isci_host *ihost,
struct domain_device *dev, void *req,
int req_size, void *resp, int resp_size)
@@ -1376,7 +1353,7 @@
struct sas_task *task = NULL;
for (retry = 0; retry < 3; retry++) {
- task = isci_alloc_task();
+ task = sas_alloc_task(GFP_KERNEL);
if (!task)
return -ENOMEM;
@@ -1439,13 +1416,13 @@
SAS_ADDR(dev->sas_addr),
task->task_status.resp,
task->task_status.stat);
- isci_free_task(ihost, task);
+ sas_free_task(task);
task = NULL;
}
}
ex_err:
BUG_ON(retry == 3 && task != NULL);
- isci_free_task(ihost, task);
+ sas_free_task(task);
return res;
}
diff --git a/drivers/scsi/libsas/sas_init.c b/drivers/scsi/libsas/sas_init.c
index 2dc55343..dd56ea8 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 @@
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;
diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c
index 4958fef..4196eee 100644
--- a/drivers/scsi/mvsas/mv_sas.c
+++ b/drivers/scsi/mvsas/mv_sas.c
@@ -1387,28 +1387,6 @@
mvs_dev_gone_notify(dev);
}
-static struct sas_task *mvs_alloc_task(void)
-{
- struct sas_task *task = kzalloc(sizeof(struct sas_task), GFP_KERNEL);
-
- 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;
-}
-
-static void mvs_free_task(struct sas_task *task)
-{
- if (task) {
- BUG_ON(!list_empty(&task->list));
- kfree(task);
- }
-}
-
static void mvs_task_done(struct sas_task *task)
{
if (!del_timer(&task->timer))
@@ -1432,7 +1410,7 @@
struct sas_task *task = NULL;
for (retry = 0; retry < 3; retry++) {
- task = mvs_alloc_task();
+ task = sas_alloc_task(GFP_KERNEL);
if (!task)
return -ENOMEM;
@@ -1490,15 +1468,14 @@
SAS_ADDR(dev->sas_addr),
task->task_status.resp,
task->task_status.stat);
- mvs_free_task(task);
+ sas_free_task(task);
task = NULL;
}
}
ex_err:
BUG_ON(retry == 3 && task != NULL);
- if (task != NULL)
- mvs_free_task(task);
+ sas_free_task(task);
return res;
}
diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c
index 6ae059e..7dbbf8b 100644
--- a/drivers/scsi/pm8001/pm8001_sas.c
+++ b/drivers/scsi/pm8001/pm8001_sas.c
@@ -669,30 +669,6 @@
return pm8001_dev_found_notify(dev);
}
-/**
- * pm8001_alloc_task - allocate a task structure for TMF
- */
-static struct sas_task *pm8001_alloc_task(void)
-{
- struct sas_task *task = kzalloc(sizeof(*task), GFP_KERNEL);
- 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;
-}
-
-static void pm8001_free_task(struct sas_task *task)
-{
- if (task) {
- BUG_ON(!list_empty(&task->list));
- kfree(task);
- }
-}
-
static void pm8001_task_done(struct sas_task *task)
{
if (!del_timer(&task->timer))
@@ -728,7 +704,7 @@
struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
for (retry = 0; retry < 3; retry++) {
- task = pm8001_alloc_task();
+ task = sas_alloc_task(GFP_KERNEL);
if (!task)
return -ENOMEM;
@@ -789,14 +765,13 @@
SAS_ADDR(dev->sas_addr),
task->task_status.resp,
task->task_status.stat));
- pm8001_free_task(task);
+ sas_free_task(task);
task = NULL;
}
}
ex_err:
BUG_ON(retry == 3 && task != NULL);
- if (task != NULL)
- pm8001_free_task(task);
+ sas_free_task(task);
return res;
}
@@ -811,7 +786,7 @@
struct sas_task *task = NULL;
for (retry = 0; retry < 3; retry++) {
- task = pm8001_alloc_task();
+ task = sas_alloc_task(GFP_KERNEL);
if (!task)
return -ENOMEM;
@@ -864,14 +839,13 @@
SAS_ADDR(dev->sas_addr),
task->task_status.resp,
task->task_status.stat));
- pm8001_free_task(task);
+ sas_free_task(task);
task = NULL;
}
}
ex_err:
BUG_ON(retry == 3 && task != NULL);
- if (task != NULL)
- pm8001_free_task(task);
+ sas_free_task(task);
return res;
}
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index ee86606..2517254 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -555,36 +555,14 @@
struct work_struct abort_work;
};
-extern struct kmem_cache *sas_task_cache;
-
#define SAS_TASK_STATE_PENDING 1
#define SAS_TASK_STATE_DONE 2
#define SAS_TASK_STATE_ABORTED 4
#define SAS_TASK_NEED_DEV_RESET 8
#define SAS_TASK_AT_INITIATOR 16
-static inline 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;
-}
-
-static inline void sas_free_task(struct sas_task *task)
-{
- if (task) {
- BUG_ON(!list_empty(&task->list));
- kmem_cache_free(sas_task_cache, task);
- }
-}
+extern struct sas_task *sas_alloc_task(gfp_t flags);
+extern void sas_free_task(struct sas_task *task);
struct sas_domain_function_template {
/* The class calls these to notify the LLDD of an event. */
