KTIME_SUB(9) Driver Basics KTIME_SUB(9)NAME
ktime_sub - subtract two ktime_t variables
SYNOPSIS
ktime_t ktime_sub(const ktime_t lhs, const ktime_t rhs);
ARGUMENTS
lhs
minuend
rhs
subtrahend
DESCRIPTION
Returns the remainder of the substraction
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 KTIME_SUB(9)
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STRUCT HRTIMER(9) Driver Basics STRUCT HRTIMER(9)NAME
struct_hrtimer - the basic hrtimer structure
SYNOPSIS
struct hrtimer {
struct rb_node node;
ktime_t _expires;
ktime_t _softexpires;
enum hrtimer_restart (* function) (struct hrtimer *);
struct hrtimer_clock_base * base;
unsigned long state;
#ifdef CONFIG_TIMER_STATS
int start_pid;
void * start_site;
char start_comm[16];
#endif
};
MEMBERS
node
red black tree node for time ordered insertion
_expires
the absolute expiry time in the hrtimers internal representation. The time is related to the clock on which the timer is based. Is
setup by adding slack to the _softexpires value. For non range timers identical to _softexpires.
_softexpires
the absolute earliest expiry time of the hrtimer. The time which was given as expiry time when the timer was armed.
function
timer expiry callback function
base
pointer to the timer base (per cpu and per clock)
state
state information (See bit values above)
start_pid
timer statistics field to store the pid of the task which started the timer
start_site
timer statistics field to store the site where the timer was started
start_comm[16]
timer statistics field to store the name of the process which started the timer
DESCRIPTION
The hrtimer structure must be initialized by hrtimer_init
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 STRUCT HRTIMER(9)
Hi,
I'm having two fields in the file
F1|F2
20111220|102000
F1 ->YYYYMMDD
F2 ->HHMMSS
Now, I need to compare this with current date & time and need to return the difference value in hours. Already, I checked with datecalc from the forum. So, need hints from Shell Gurus.
Thanks (10 Replies)
Hi All,
How to validate the 4th column,it is date column in the file, if it valid move to valid file else moved invalid file.
9f680174-cb87|20077337254|0|20120511|N
9f680174-cb88|20077337254|0|20120534|N
i want two file valid.txt and invalid.txt
Thanks, (7 Replies)
Dear all,
I have 2 questions.
I have a file with many rows which has date of the format YYYYMMDD.
1. I need to change the date to that weeks friday date(Ex: 20120716(monday) to 20120720). Satuday/Sunday has to be changed to next week friday date too.
2. After converting the date to... (10 Replies)
Hello,
What I would like to do is a shell script which will read a database file, then it will compare the current date/hour/minute in each line existing in the database file.
Today is 20140305 (year_month_day) & assume that the time is 15:11 at the moment.
under /var/log/
database.txt
... (5 Replies)
I wrote this kernel module to test the correctness of ndelay() function.
Kernel mdoule:
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/time.h>
#include <linux/delay.h>
static int __init initialize(void)
{
ktime_t start, end;
s64... (1 Reply)