For a clear nexus reset operation, the I_T nexus resets are executed
serially for each device. For devices attached through an expander, this
may take 2s per device; so, in total, could take a long time.
Reduce the total time by running the I_T nexus resets in parallel through
async operations.
Link: https://lore.kernel.org/r/1623058179-80434-3-git-send-email-john.garry@huawei.com
Signed-off-by: Luo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
#define _HISI_SAS_H_
#include <linux/acpi.h>
#define _HISI_SAS_H_
#include <linux/acpi.h>
+#include <linux/async.h>
#include <linux/blk-mq.h>
#include <linux/blk-mq-pci.h>
#include <linux/clk.h>
#include <linux/blk-mq.h>
#include <linux/blk-mq-pci.h>
#include <linux/clk.h>
+static void hisi_sas_async_I_T_nexus_reset(void *data, async_cookie_t cookie)
+{
+ struct domain_device *device = data;
+ struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
+ int rc;
+
+ rc = hisi_sas_debug_I_T_nexus_reset(device);
+ if (rc != TMF_RESP_FUNC_COMPLETE)
+ dev_info(hisi_hba->dev, "I_T_nexus reset fail for dev:%016llx rc=%d\n",
+ SAS_ADDR(device->sas_addr), rc);
+}
+
static int hisi_sas_clear_nexus_ha(struct sas_ha_struct *sas_ha)
{
struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
static int hisi_sas_clear_nexus_ha(struct sas_ha_struct *sas_ha)
{
struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
- struct device *dev = hisi_hba->dev;
HISI_SAS_DECLARE_RST_WORK_ON_STACK(r);
HISI_SAS_DECLARE_RST_WORK_ON_STACK(r);
+ ASYNC_DOMAIN_EXCLUSIVE(async);
+ int i;
queue_work(hisi_hba->wq, &r.work);
wait_for_completion(r.completion);
queue_work(hisi_hba->wq, &r.work);
wait_for_completion(r.completion);
dev_is_expander(device->dev_type))
continue;
dev_is_expander(device->dev_type))
continue;
- rc = hisi_sas_debug_I_T_nexus_reset(device);
- if (rc != TMF_RESP_FUNC_COMPLETE)
- dev_info(dev, "clear nexus ha: for device[%d] rc=%d\n",
- sas_dev->device_id, rc);
+ async_schedule_domain(hisi_sas_async_I_T_nexus_reset,
+ device, &async);
+ async_synchronize_full_domain(&async);
hisi_sas_release_tasks(hisi_hba);
return TMF_RESP_FUNC_COMPLETE;
hisi_sas_release_tasks(hisi_hba);
return TMF_RESP_FUNC_COMPLETE;