diff options
| author | Luo Jiaxing <luojiaxing@huawei.com> | 2019-10-24 22:08:12 +0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-10-24 21:31:13 -0400 |
| commit | d28ed83b769378deefa82456f962e14a4b0afadf (patch) | |
| tree | a4f842a5f7de4b20e4433f6963462eb9465360c2 /drivers/scsi/hisi_sas | |
| parent | 550c0d89d52d3bec5c299f69b4ed5d2ee6b8a9a6 (diff) | |
scsi: hisi_sas: Add timestamp for a debugfs dump
It's useful to know when the dump occurred, so add a timestamp file for
this.
Link: https://lore.kernel.org/r/1571926105-74636-6-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>
Diffstat (limited to 'drivers/scsi/hisi_sas')
| -rw-r--r-- | drivers/scsi/hisi_sas/hisi_sas.h | 2 | ||||
| -rw-r--r-- | drivers/scsi/hisi_sas/hisi_sas_main.c | 8 |
2 files changed, 10 insertions, 0 deletions
diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h index 83232e8472fb..7069dae4cec9 100644 --- a/drivers/scsi/hisi_sas/hisi_sas.h +++ b/drivers/scsi/hisi_sas/hisi_sas.h @@ -21,6 +21,7 @@ #include <linux/platform_device.h> #include <linux/property.h> #include <linux/regmap.h> +#include <linux/timer.h> #include <scsi/sas_ata.h> #include <scsi/libsas.h> @@ -410,6 +411,7 @@ struct hisi_hba { struct hisi_sas_iost *debugfs_iost; struct hisi_sas_itct *debugfs_itct; u64 *debugfs_iost_cache; + u64 debugfs_timestamp; u64 *debugfs_itct_cache; struct dentry *debugfs_dir; diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index a7bac5dc389a..a0d04e4e13e2 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -3194,6 +3194,7 @@ static const struct file_operations hisi_sas_debugfs_itct_cache_fops = { static void hisi_sas_debugfs_create_files(struct hisi_hba *hisi_hba) { + u64 *debugfs_timestamp; struct dentry *dump_dentry; struct dentry *dentry; char name[256]; @@ -3201,10 +3202,14 @@ static void hisi_sas_debugfs_create_files(struct hisi_hba *hisi_hba) int c; int d; + debugfs_timestamp = &hisi_hba->debugfs_timestamp; /* Create dump dir inside device dir */ dump_dentry = debugfs_create_dir("dump", hisi_hba->debugfs_dir); hisi_hba->debugfs_dump_dentry = dump_dentry; + debugfs_create_u64("timestamp", 0400, dump_dentry, + debugfs_timestamp); + debugfs_create_file("global", 0400, dump_dentry, hisi_hba, &hisi_sas_debugfs_global_fops); @@ -3684,7 +3689,10 @@ void hisi_sas_debugfs_work_handler(struct work_struct *work) { struct hisi_hba *hisi_hba = container_of(work, struct hisi_hba, debugfs_work); + u64 timestamp = local_clock(); + do_div(timestamp, NSEC_PER_MSEC); + hisi_hba->debugfs_timestamp = timestamp; if (hisi_hba->debugfs_snapshot) return; hisi_hba->debugfs_snapshot = true; |