There are four places convert system time in UTC to local time seconds as a time stamp in scsi-subsystem,
so we introduce a help function local_time_seconds() to simplify these operations.
Signed-off-by: Gu Zheng <[email protected]>
---
drivers/scsi/3w-9xxx.c | 14 ++------------
drivers/scsi/3w-sas.c | 14 ++------------
include/scsi/scsi.h | 9 +++++++++
3 files changed, 13 insertions(+), 24 deletions(-)
diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c
index 5e1e12c..44b3ea8 100644
--- a/drivers/scsi/3w-9xxx.c
+++ b/drivers/scsi/3w-9xxx.c
@@ -374,8 +374,6 @@ out:
/* This function will queue an event */
static void twa_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header)
{
- u32 local_time;
- struct timeval time;
TW_Event *event;
unsigned short aen;
char host[16];
@@ -398,9 +396,7 @@ static void twa_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_H
memset(event, 0, sizeof(TW_Event));
event->severity = TW_SEV_OUT(header->status_block.severity__reserved);
- do_gettimeofday(&time);
- local_time = (u32)(time.tv_sec - (sys_tz.tz_minuteswest * 60));
- event->time_stamp_sec = local_time;
+ event->time_stamp_sec = local_time_seconds();
event->aen_code = aen;
event->retrieved = TW_AEN_NOT_RETRIEVED;
event->sequence_id = tw_dev->error_sequence_id;
@@ -479,11 +475,9 @@ out:
static void twa_aen_sync_time(TW_Device_Extension *tw_dev, int request_id)
{
u32 schedulertime;
- struct timeval utc;
TW_Command_Full *full_command_packet;
TW_Command *command_packet;
TW_Param_Apache *param;
- u32 local_time;
/* Fill out the command packet */
full_command_packet = tw_dev->command_packet_virt[request_id];
@@ -503,11 +497,7 @@ static void twa_aen_sync_time(TW_Device_Extension *tw_dev, int request_id)
param->parameter_id = cpu_to_le16(0x3); /* SchedulerTime */
param->parameter_size_bytes = cpu_to_le16(4);
- /* Convert system time in UTC to local time seconds since last
- Sunday 12:00AM */
- do_gettimeofday(&utc);
- local_time = (u32)(utc.tv_sec - (sys_tz.tz_minuteswest * 60));
- schedulertime = local_time - (3 * 86400);
+ schedulertime = local_time_seconds() - (3 * 86400);
schedulertime = cpu_to_le32(schedulertime % 604800);
memcpy(param->data, &schedulertime, sizeof(u32));
diff --git a/drivers/scsi/3w-sas.c b/drivers/scsi/3w-sas.c
index c845bdb..69f1d8a 100644
--- a/drivers/scsi/3w-sas.c
+++ b/drivers/scsi/3w-sas.c
@@ -236,8 +236,6 @@ out:
/* This function will queue an event */
static void twl_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header)
{
- u32 local_time;
- struct timeval time;
TW_Event *event;
unsigned short aen;
char host[16];
@@ -256,9 +254,7 @@ static void twl_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_H
memset(event, 0, sizeof(TW_Event));
event->severity = TW_SEV_OUT(header->status_block.severity__reserved);
- do_gettimeofday(&time);
- local_time = (u32)(time.tv_sec - (sys_tz.tz_minuteswest * 60));
- event->time_stamp_sec = local_time;
+ event->time_stamp_sec = local_time_seconds();
event->aen_code = aen;
event->retrieved = TW_AEN_NOT_RETRIEVED;
event->sequence_id = tw_dev->error_sequence_id;
@@ -444,11 +440,9 @@ out:
static void twl_aen_sync_time(TW_Device_Extension *tw_dev, int request_id)
{
u32 schedulertime;
- struct timeval utc;
TW_Command_Full *full_command_packet;
TW_Command *command_packet;
TW_Param_Apache *param;
- u32 local_time;
/* Fill out the command packet */
full_command_packet = tw_dev->command_packet_virt[request_id];
@@ -468,11 +462,7 @@ static void twl_aen_sync_time(TW_Device_Extension *tw_dev, int request_id)
param->parameter_id = cpu_to_le16(0x3); /* SchedulerTime */
param->parameter_size_bytes = cpu_to_le16(4);
- /* Convert system time in UTC to local time seconds since last
- Sunday 12:00AM */
- do_gettimeofday(&utc);
- local_time = (u32)(utc.tv_sec - (sys_tz.tz_minuteswest * 60));
- schedulertime = local_time - (3 * 86400);
+ schedulertime = local_time_seconds() - (3 * 86400);
schedulertime = cpu_to_le32(schedulertime % 604800);
memcpy(param->data, &schedulertime, sizeof(u32));
diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h
index 66216c1..f3377ca 100644
--- a/include/scsi/scsi.h
+++ b/include/scsi/scsi.h
@@ -574,4 +574,13 @@ static inline __u32 scsi_to_u32(__u8 *ptr)
return (ptr[0]<<24) + (ptr[1]<<16) + (ptr[2]<<8) + ptr[3];
}
+/*
+ * Convert system time in UTC to local time seconds.
+ */
+static inline u32 local_time_seconds(void)
+{
+ struct timeval utc;
+ do_gettimeofday(&utc);
+ return (u32)(utc.tv_sec - (sys_tz.tz_minuteswest * 60));
+}
#endif /* _SCSI_SCSI_H */
--
1.7.7
On Mon, 2013-06-10 at 09:57 +0800, Gu Zheng wrote:
> diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h
> index 66216c1..f3377ca 100644
> --- a/include/scsi/scsi.h
> +++ b/include/scsi/scsi.h
> @@ -574,4 +574,13 @@ static inline __u32 scsi_to_u32(__u8 *ptr)
> return (ptr[0]<<24) + (ptr[1]<<16) + (ptr[2]<<8) + ptr[3];
> }
>
> +/*
> + * Convert system time in UTC to local time seconds.
> + */
> +static inline u32 local_time_seconds(void)
> +{
> + struct timeval utc;
> + do_gettimeofday(&utc);
> + return (u32)(utc.tv_sec - (sys_tz.tz_minuteswest * 60));
> +}
> #endif /* _SCSI_SCSI_H */
This doesn't belong in SCSI.
It's not a common pattern, so just leave it open coded in the 3ware
drivers. If there's a need for it to be a common pattern, John Stultz
will add it to the timer code, but at the moment, he doesn't seem to see
the need.
James
On 06/11/2013 01:47 AM, James Bottomley wrote:
> On Mon, 2013-06-10 at 09:57 +0800, Gu Zheng wrote:
>> diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h
>> index 66216c1..f3377ca 100644
>> --- a/include/scsi/scsi.h
>> +++ b/include/scsi/scsi.h
>> @@ -574,4 +574,13 @@ static inline __u32 scsi_to_u32(__u8 *ptr)
>> return (ptr[0]<<24) + (ptr[1]<<16) + (ptr[2]<<8) + ptr[3];
>> }
>>
>> +/*
>> + * Convert system time in UTC to local time seconds.
>> + */
>> +static inline u32 local_time_seconds(void)
>> +{
>> + struct timeval utc;
>> + do_gettimeofday(&utc);
>> + return (u32)(utc.tv_sec - (sys_tz.tz_minuteswest * 60));
>> +}
>> #endif /* _SCSI_SCSI_H */
>
> This doesn't belong in SCSI.
>
> It's not a common pattern, so just leave it open coded in the 3ware
> drivers. If there's a need for it to be a common pattern, John Stultz
> will add it to the timer code, but at the moment, he doesn't seem to see
> the need.
Hi James,
OK...Thanks for your reminder.
As you mentioned in an old thread, what about using "jiffies to seconds" to replace
the existed timestamps?
Best regards,
Gu
>
> James
>
>
>