From: Can Guo <cang@codeaurora.org>
To: asutoshd@codeaurora.org, nguyenb@codeaurora.org,
hongwus@codeaurora.org, linux-scsi@vger.kernel.org,
kernel-team@android.com, cang@codeaurora.org
Subject: [PATCH v4 0/2] Introduce hba performance monitoring sysfs nodes
Date: Wed, 31 Mar 2021 23:15:01 -0700 [thread overview]
Message-ID: <1617257704-1154-1-git-send-email-cang@codeaurora.org> (raw)
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
data during runtime.
It works like:
/sys/bus/platform/drivers/ufshcd/*/monitor # echo 4096 > monitor_chunk_size
/sys/bus/platform/drivers/ufshcd/*/monitor # echo 1 > monitor_enable
/sys/bus/platform/drivers/ufshcd/*/monitor # grep ^ /dev/null *
monitor_chunk_size:4096
monitor_enable:1
read_nr_requests:17
read_req_latency_avg:169
read_req_latency_max:594
read_req_latency_min:66
read_req_latency_sum:2887
read_total_busy:2639
read_total_sectors:136
write_nr_requests:116
write_req_latency_avg:440
write_req_latency_max:4921
write_req_latency_min:23
write_req_latency_sum:51052
write_total_busy:19584
write_total_sectors:928
Change since v3:
- Rebased
Change since v2:
- Fixed a sparse error
Change since v1:
- Moved code from ufs-qcom.c to ufshcd.c
Can Guo (2):
scsi: ufs: Introduce hba performance monitor sysfs nodes
scsi: ufs: Add support for hba performance monitor
Documentation/ABI/testing/sysfs-driver-ufs | 126 +++++++++++++++
drivers/scsi/ufs/ufs-sysfs.c | 237 +++++++++++++++++++++++++++++
drivers/scsi/ufs/ufshcd.c | 62 ++++++++
drivers/scsi/ufs/ufshcd.h | 21 +++
4 files changed, 446 insertions(+)
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.
next reply other threads:[~2021-04-01 6:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-01 6:15 Can Guo [this message]
2021-04-01 6:15 ` [PATCH 1/2] scsi: ufs: Introduce hba performance monitor sysfs nodes Can Guo
2021-04-06 4:11 ` Daejun Park
2021-04-06 5:37 ` Can Guo
2021-04-06 5:43 ` Can Guo
2021-04-06 5:58 ` Daejun Park
2021-04-06 6:11 ` Can Guo
2021-04-01 6:15 ` [PATCH 2/2] scsi: ufs: Add support for hba performance monitor Can Guo
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