scsi: ufs: core: Introduce HBA performance monitor sysfs nodes
Add a new sysfs group which has nodes to monitor data/request transfer
performance. This sysfs group has nodes showing total sectors/requests
transferred, total busy time spent and max/min/avg/sum latencies. This
group can be enhanced later to show more UFS driver layer performance
statistics data during runtime.
Link: https://lore.kernel.org/r/1619058521-35307-2-git-send-email-cang@codeaurora.org
Reviewed-by: Daejun Park <daejun7.park@samsung.com>
Acked-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index b8b4fe2..bc01fdc 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -647,6 +647,25 @@ struct ufs_hba_variant_params {
u32 wb_flush_threshold;
};
+struct ufs_hba_monitor {
+ unsigned long chunk_size;
+
+ unsigned long nr_sec_rw[2];
+ ktime_t total_busy[2];
+
+ unsigned long nr_req[2];
+ /* latencies*/
+ ktime_t lat_sum[2];
+ ktime_t lat_max[2];
+ ktime_t lat_min[2];
+
+ u32 nr_queued[2];
+ ktime_t busy_start_ts[2];
+
+ ktime_t enabled_ts;
+ bool enabled;
+};
+
/**
* struct ufs_hba - per adapter private structure
* @mmio_base: UFSHCI base register address
@@ -838,6 +857,8 @@ struct ufs_hba {
struct request_queue *bsg_queue;
struct delayed_work rpm_dev_flush_recheck_work;
+ struct ufs_hba_monitor monitor;
+
#ifdef CONFIG_SCSI_UFS_CRYPTO
union ufs_crypto_capabilities crypto_capabilities;
union ufs_crypto_cap_entry *crypto_cap_array;
