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SubjectRe: [PATCH RESEND] scsi: Introduce a help function local_time_seconds() to simplify the getting time stamp operation
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
>
>
>




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