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Message-ID: <51A6C6B1.4060206@cn.fujitsu.com>
Date: Thu, 30 May 2013 11:25:37 +0800
From: Gu Zheng <guz.fnst@...fujitsu.com>
To: Libo Chen <clbchenlibo.chen@...wei.com>
CC: "James E.J. Bottomley" <JBottomley@...allels.com>,
Linux-Scsi <linux-scsi@...r.kernel.org>,
linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] scsi: Introduce a help function local_time_seconds()
to simplify the getting time stamp operation
On 05/30/2013 11:00 AM, Libo Chen wrote:
> On 2013/5/29 17:33, Gu Zheng wrote:
>> >From 4d4caa16f3886ae910ad6dfe13353fc836f546cc Mon Sep 17 00:00:00 2001
>> From: Gu Zheng <guz.fnst@...fujitsu.com>
>> Date: Wed, 29 May 2013 17:34:22 +0900
>> Subject: [PATCH] driver/scsi: Introduce a help function local_time_seconds() to simplify the getting time stamp operation
>>
> hi gu,
>
> next time, you can remove above info.
Ah~, I forgot to clean up the unnecessary title infos, thanks for your reminder.
Regards,
Gu
>
>
> thanks,
>
> Libo
>
>
>> Signed-off-by: Gu Zheng <guz.fnst@...fujitsu.com>
>> ---
>> 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 */
>>
>
>
>
--
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