雖然這篇Do_gettimeofday鄉民發文沒有被收入到精華區:在Do_gettimeofday這個話題中,我們另外找到其它相關的精選爆讚文章
[爆卦]Do_gettimeofday是什麼?優點缺點精華區懶人包
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#1Linux 核心中獲取時間分析基於do_gettimeofday() - IT閱讀
為此<linux/time.h>輸出了do_gettimeofday函式。當被呼叫時,被填充一個struct timeval指標–和在gettimeofday系統呼叫中使用的相同。
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#2Linux内核API do_gettimeofday - 极客笔记
do_gettimeofday 函数功能描述:获取当前系统内核时间,此时间是用距离1970:1:1:00:00:00的时间差表示的,表示方法是将时间差存放在结构体变量中, ...
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#3do_gettimeofday使用方法- 张大猛 - 博客园
1.简介: 在Linux中可以使用函数do_gettimeofday()函数来得到精确时间。它的精度可以达到微妙,是与C标准库中gettimeofday()用发相同的函数。
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#4Linux内核中获取时间的函数do_gettimeofday_夏的博客
do_gettimeofday 函数是可以在内核种获取时间的函数。使用背景:在测试项目中的一个功能模块时,测试人员发现延时严重,属于不可接受的范围。
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#5Linux驅動程序記錄時間差的方法--jiffies和do_gettimeofday ...
do_gettimeofday ()函數是gettimeofday()系統調用在內核的實現。該函數需要傳入結構體timeval指針。 struct timeval { __time_t tv_sec; ...
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#6Linux kernel計時器-jiffies與do_gettimeofday() - 光希的工作 ...
do_gettimeofday 所接收的argument是struct timeval這個資料結構,struct timeval被定義在linux/time.h內。 struct timeval {. time_t tv_sec; /* seconds ...
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#7How to use do_gettimeofday - Code World
In Linux, you can use the function do_gettimeofday() to get the precise time. Its precision can be subtle, and it is the same function used ...
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#8do_gettimeofday使用方法_一口Linux的技术博客
在Linux中可以使用函数do_gettimeofday()函数来得到精确时间。它的精度可以达到微妙,是与C标准库中gettimeofday()用发相同的函数。在Linux内核中获得 ...
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#9Linux 内核| 内核的时间函数 - 一丁点儿的网络日志
... 内核中函数执行时间,需要获取当前的系统时间来计算时间差。网络上很多资料都还停留在使用struct timeval和对应的函数void do_gettimeofday(st...
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#10計時器-软件开发平台及语言笔记大全(超详细)
void do_gettimeofday(struct timeval *tv);. timeval 結構定義在「linux/time.h」標頭檔內: struct timeval { time_t tv_sec; /* seconds */ suseconds_t tv_usec ...
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#11do_gettimeofday identifier - Linux source code (v4.7) - Elixir ...
Elixir Cross Referencer - Explore source code in your browser - Particularly useful for the Linux kernel and other low-level projects in C/C++ (bootloaders, ...
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#12do_gettimeofday - 程序员秘密
Linux内核中获取时间函数do_gettimeofday ... 内核代码能一直获取一个当前时间的表示, 通过查看jifies 的值. 常常地, 这个值只代表从最后一次启动以来的时间, 这个事实对驱动 ...
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#13Linux 内核中获取时间分析基于do_gettimeofday() - 代码先锋网
为此<linux/time.h>输出了do_gettimeofday函数。当被调用时,被填充一个struct timeval指针–和在gettimeofday系统调用中使用的相同。数据结构中包含秒和毫秒值。
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#14How can i print current time in kernel? - Stack Overflow
Yes, do_gettimeofday has been removed because of y2038 problem. Instead the kernel provides time interfaces which you can use as per your ...
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#15do_gettimeofday使用方法_Linux - 运维开发网
在Linux中可以使用函数do_gettimeofday()函数来得到精确时间。它的精度可以达到微妙,是与C标准库中gettimeofday()用发相同的函数。在Linux内核中获得 ...
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#16Linux内核中获取时间的函数do_gettimeofday_夏的博客
do_gettimeofday 函数是可以在内核种获取时间的函数。使用背景:在测试项目中的一个功能模块时,测试人员发现延时严重,属于不可接受的范围。然后驱动就让上层的媒控 ...
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#17【Linux】核心中記錄系統時間@ Eternalwind's Databases
do_gettimeofday (struct timeval *tv) 範例: struct timeval tv; do_gettimeofday(&tv); printk("usec=%d\n", tv.tv_usec); 註: printk所顯示的系統時間準確度只有 ...
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#18Linux 内核中获取时间分析基于do_gettimeofday() - 程序员宅基地
Linux 内核中获取时间分析基于do_gettimeofday()内核代码能一直获取一个当前时间的表示,通过查看jifies的值。通常这个值只代表从最后一次启动以来的时间, ...
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#19Linux内核中获取时间函数do_gettimeofday_嵌入式开发
void do_gettimeofday(struct timeval *tv);. 这段源代码声明do_gettimeofday 有" 接近毫秒的精度", 因为它询问时间硬件当前jiffy 多大比例已经流失. 这个精度每 ...
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#20Linux Kernel: include/linux/time.h File Reference
do_gettimeofday - Returns the time of day in a timeval : pointer to the timeval to be set. NOTE: Users should be converted to using getnstimeofday().
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#217.2. 获知当前时间-Linux设备驱动第三版(中文版)- - - DeanSys
do_gettimeofday 的原型是: #include <linux/time.h> void do_gettimeofday(struct timeval *tv);. 这段源代码声明do_gettimeofday 有" 接近毫秒 ...
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#22do_gettimeofday - manned.org
DO_GETTIMEOFDAY (9) Driver Basics DO_GETTIMEOFDAY(9) NAME do_gettimeofday - Returns the time of day in a timeval SYNOPSIS void do_gettimeofday(struct timeval ...
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#23linux5.1中没有do_gettimeofday - CodeAntenna
可以使用ktime时间函数参考:https://blog.csdn.net/rikeyone/article/details/98498526其中5.1的时候do_gettimeofday已经没有了,CodeAntenna技术文章技术问题代码片段 ...
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#24Remove do_gettimeofday() usage for ktime_get - Patchwork
As part of the y2038 cleanups, this patch removes the do_gettimeofday usage replacing it with ktime_get. Cc: "David S. Miller" <[email protected]> Cc: ...
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#25C++ (Cpp) do_gettimeofday Examples - HotExamples
static void mx_pmic_irq_cb(void *cb_data, u8 intsts) { u8 jack_cur_status, jack_prev_state = 0; struct mad_jack *mjack = NULL; unsigned int present = 0, ...
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#26Linux Manpages Online - man.cx manual pages
do_gettimeofday − Returns the time of day in a timeval. SYNOPSIS. void do_gettimeofday(struct timeval * tv);. ARGUMENTS.
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#27do_gettimeofday - Python成神之路
do_gettimeofday 调用getnstimeofday,最关键的是timerkeeper.xtime,这是kernel的墙上时间,xtime的更新是在kernel下clockevent注册的时钟中断, ...
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#28Kernel(do_gettimeofday) Download (RPM) - pkgs.org
Download kernel(do_gettimeofday) packages for AlmaLinux, CentOS, Rocky Linux.
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#29Broken on kernel 5.0 because of do_gettimeofday #10 - GitHub
deepin-anything fails to build on Manjaro with kernel 5.0.1; see below. It appears do_gettimeofday was deprecated and is now removed.
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#30Linux内核中获取时间函数do_gettimeofday - 代码交流
void do_gettimeofday(struct timeval *tv);. 这段源代码声明do_gettimeofday 有" 接近毫秒的精度", 因为它询问时间硬件当前jiffy 多大比例已经流失. 这个精度每 ...
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#31Linux 内核中获取时间分析基于do_gettimeofday() - 程序员ITS404
为此<linux/time.h>输出了do_gettimeofday函数。当被调用时,被填充一个struct timeval指针–和在gettimeofday系统调用中使用的相同。数据结构中包含秒和毫秒值。
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#32Knowing the Current Time - Linux Device Drivers, Second ...
If your driver really needs the current time, the do_gettimeofday function comes to the rescue. This function doesn't tell the current day of the week or ...
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#33drm/msm/gpu: avoid deprecated do_gettimeofday - Patchwork
All users of do_gettimeofday() have been removed, but this one recently crept in, along with an incorrect printing of the microseconds ...
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#34ktime accessors — The Linux Kernel documentation - LWN.net
void ktime_get_ts (struct timespec *)¶. Use ktime_get() or ktime_get_ts64() instead. struct timeval do_gettimeofday (void) ...
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#35Linux驱动程序记录时间差的方法
Linux驱动程序记录时间差的方法常用的Linux内核空间记录一个事务的时间差有两种方法–使用jiffies变量和do_gettimeofday()函数。这两天接到一个测量PCIe总线带宽的任务 ...
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#36Wait_event_interruptible_timeout 示例
Elixir Cross Referencer - 在浏览器中探索源代码- 对于Linux 内核和其他C/C++ 中的低级项目(引导加载程序、. Do_gettimeofday 示例. linux内核中人类 ...
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#37Kernel FAQ | Wener Live & Life
修改 · Linux 5.4. linux/pci-aspm.h -> linux/pci.h · Linux 5.1. get_ds. get_ds() -> KERNEL_DS · Linux 5.0. SUBDIRS=$(PWD) -> M=$(shell pwd); do_gettimeofday.
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#38308-5.00-02-do_gettimeofday.patch « files « vmware-modules «
monotimeBase; } while (!VersionedAtomic_EndTryRead(&uptimeState.version, version)); +#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 0, 0) do_gettimeofday(&tv); ...
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#39gettimeofday(2) - Linux manual page - man7.org
SYNOPSIS top · #include <sys/time.h> · int gettimeofday(struct timeval *restrict ·, · struct timezone *restrict · ); · int settimeofday(const struct ...
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#40定时机制– Linux内核API do_gettimeofday - 炫意HTML5
do_gettimeofday 函数功能描述:获取当前系统内核时间,此时间是用距离1970:1:1:00:00:00的时间差表示的,表示方法是将时间差存放在结构体变量中, ...
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#41LDDP:九、計時器 - BOOK - 痞客邦
在kernel 內想取得目前時刻,可以呼叫do_gettimeofday(): void do_gettimeofday(struct timeval *tv); timeval 結構定義在「linux/time.h」標頭檔內 ...
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#42C++ ktime_get_ts函數代碼示例- 純淨天空
... ktime_get_ts(&ts); time_stamp->buf_time.tv_sec = ts.tv_sec; time_stamp->buf_time.tv_usec = ts.tv_nsec/1000; do_gettimeofday(&(time_stamp->event_time)); ...
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#43Time difference method Linux drivers log - Programmer Sought
do_gettimeofday () function is gettimeofday () system call in kernel implementation. This function takes a pointer passed timeval structure.
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#44Linux-Kernel Archive: Re: do_gettimeofday( ) precision?
Re: do_gettimeofday( ) precision? From: Lukasz Michal Rak Date: Wed Jun 23 2004 - 10:55:37 EST. Next message: Darren Hart: "Re: slow down with ...
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#45do_gettimeofday 东八区时间
简介: 在Linux中可以使用函数do_gettimeofday()函数来得到精确时间.它的精度可以达到微妙,是与C标准库中gettimeofday()用发相同的函数.在Linux内核中获得时间的函数.
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#46linux - 如何在内核中打印当前时间? - IT工具网
错误说我不能使用do_gettimeofday,我终于知道我不能再使用do_gettimeofday了,因为kernel5不支持。 我在谷歌和stackoverflow上搜索, 但我不知道如何在kernel5 中打印 ...
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#47LKML: Arnd Bergmann: [PATCH 02/14] y2038
get_seconds() and do_gettimeofday() are only used by a few modules now any more (waiting for the respective patches to get accepted), ...
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#48【C】如何訪問時間結構的欄位 - 程式人生
int main() { struct timeval *cur; do_gettimeofday(cur); printf("Here is the time of day: %ld %ld", cur.tv_sec, cur.tv_usec); return 0; }
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#49Linux驅動技術(七) _內核定時器與延遲工作 - 每日頭條
如果要獲取當前時間,可以使用do_gettimeofday,該函數填充一個struct timeval結構,有著接近微妙的解析度。 //kernel/time/timekeeping.c 473 ...
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#50[PATCH v2 5/6] irda: stir4200: Replace timeval with ktime_t
This patch also changes do_gettimeofday() to ktime_get() accordingly, since ktime_get returns a ktime_t, but do_gettimeofday returns a
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#51do_gettimeofday needs to be replaced - githubmemory
do_gettimeofday needs to be replaced. ... [-Werror=implicit-function-declaration] do_gettimeofday(&tv); ^~~~~~~~~~~~~~~ do_settimeofday64.
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#527.2. Knowing the Current Time - 360doc个人图书馆
To this aim, <linux/time.h> exports the do_gettimeofday function. When called, it fills a struct timeval pointer—the same one used in the ...
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#53Can't compile dahdi anymore Kernel 5.0.3-200.fc29.x86_64
do_gettimeofday (&tv); ^~~~~~~~~~~~~~~ do_settimeofday64 cc1: some warnings being treated as errors make[3]: *** [scripts/Makefile.build:277: ...
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#54do_gettimeofday()undefined reference - Fedora Mailing-Lists
I have written a C > file which is using the do_gettimeofday() function. > > #include <linux/time.h> > #include <stdio.h> > > main() > ...
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#55Implementing the Race Timer - 嵌入式Linux中文站
The interrupt handler routine executes, records the race start time with do_gettimeofday, schedules the bottom-half tasklet for execution, and puts the ...
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#56Linux kernel space get time interval - carlcarl's blog
而在下面的回答中看到可以用 do_gettimeofday() 來抓時間區間,簡單範例如下:. #include <linux/time.h> // ... struct timeval begin, ...
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#57linux中時間精度的獲取問題 - 程式前沿
目前專案需要,需要對時間進行基準,基準的精度在微秒。下午老劉給我說不能用do_gettimeofday因為他的精度雖然可以到微秒但是是依靠jiffies的 ...
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#58关于C#:如何获取Linux内核空间中的当前时间(一天中的时间)
How to get current hour (time of day) in linux kernel space · time()在内核模式下不可用:-$ · 不,但是您从do_gettimeofday得到了相同的值,答案仅说明 ...
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#59Linux驅動技術(七) _內核定時器與延遲工作 - 人人焦點
473 479 void do_gettimeofday(struct timeval *tv). 驅動程序爲了讓硬體有足夠的時間完成一些任務,常常需要將特定的代碼延後一段時間來執行,根據 ...
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#60[patch] More time fixes: do_gettimeofday() & do_settimeofday()
Re: [patch] More time fixes: do_gettimeofday() & do_settimeofday() -- Linux MIPS Kernel Archive.
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#61linux内核获取时间问题 - 百度知道
do_gettimeofday (... 一个程序有很多的case,我想知道从case a发生到执行case b,所消耗了多久的时间。这是在一个驱动里面的。但是很奇怪的是我使用do_gettimeofday();所 ...
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#627.2. 获知当前时间【转】 - 阿里云开发者社区
#include <linux/time.h> void do_gettimeofday(struct timeval *tv);. 这段源代码声明do_gettimeofday 有" 接近毫秒的精度", 因为它询问时间硬件当前jiffy ...
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#63./kernel/time.c
... asmlinkage long sys_gettimeofday(struct timeval *tv, struct timezone *tz) { if (tv) { struct timeval ktv; do_gettimeofday(&ktv); if (copy_to_user(tv, ...
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#64Linux內核設計與實現——讀書筆記(8)時間管理
NULL)) { struct timeval ktv; do_gettimeofday(&ktv); ... 如果tv參數非空,do_gettimeofday() 函數會被呼叫,該函數執行回圈讀取xtime操作。
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#65Linux 内核定时器- timer_list 与delayed_work - sketch2sky
... 秒:(jiffies/HZ+2)*HZ=jiffies+2*HZ如果要获取当前时间,可以使用do_gettimeofday(),该函数填充一个struct timeval结构,有着接近微妙的分辨率。
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#66Re: do_gettimeofday vs. rdtsc in the scheduler
Re: do_gettimeofday vs. rdtsc in the scheduler. Andrea Arcangeli ([email protected]) Thu, 19 Sep 2002 20:02:29 +0200. Messages sorted by: [ date ][ thread ] ...
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#67Link error when attempting to measure time in kernel using ...
I'm attempting to time some functions calls made by a driver. So I called do_gettimeofday to get the struct timeval of the time. It compiles, but the linker ...
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#68时间管理 - 简书
struct timespec { time_t tv_sec; / seconds / long tv_nsec; / nanoseconds */ }; (3)用do_gettimeofday()用于获得timeval ...
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#69Problem related to linux time retrieving | Toolbox Tech
do_gettimeofday (). Its working fine. But after few days(years), the unsigned long variable is getting reinitialised to zero. The requirement for me is to ...
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#70c - programming - linux kernel教學 - Code Examples
將do_gettimeofday結果轉換為一小時非常簡單,因為它從GMT開始。 time_t t = time(0); ...
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#71[Kernel Programming #7] ktime_get() and do_gettimeofday ...
We have some APIs to measure time taken for a function or a piece of code in the driver. 1. do_gettimeofday() 2. ktime_get()
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#72Re: [PATCH 0/7] scsi: bfa: do_gettimeofday removal - The Mail ...
Arnd, > The bfa driver is one of the main users of do_gettimeofday(), a > function that I'm trying to remove as part of the y2038 cleanup.
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#73Kernel – 5.0-rc1 Released – Breaks NVIDIA and VMware..
Change do_gettimeofday to efi_gettimeofday ) in NVIDIA-Linux-x86_64-410.93/kernel/nvidia/os-interface.c (multiple occurrences..)
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#74系统调用gettimeofday 分析| Bluezd's Home
void do_gettimeofday(struct timeval *tv) { struct timespec now; getnstimeofday(&now); // now 中返回当前时间秒数以及纳秒数tv->tv_sec ...
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#75The Time of Day
asmlinkage long sys_gettimeofday(struct timeval *tv, struct timezone *tz) { if (likely(tv)) { struct timeval ktv; do_gettimeofday(&ktv); if (copy_to_user(tv ...
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#76The Linux Kernel Is Still Rectifying The Year 2038 Problem
These fixes are mostly dropping the use of the deprecated do_gettimeofday() function to instead use the safer ktime_get_real_ts64() or ...
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#77转载_《内核设计与实现》读书笔记(十一)- 定时器与事件管理
return 0; } /* 读取xtime 参考do_gettimeofday 方法*/ void do_gettimeofday(struct timeval *tv) { struct timespec now; getnstimeofday(&now); ...
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#78ktime_get () and do_gettimeofday () APIs use - TitanWolf
Here is abstract code to show how do_gettimeofday API will be used in our driver to measure time taken for a function. ... void do_gettimeofday(struct timeval *tv);
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#79linux 内核空间如何获取当前时间(常用格式)
本文导语: 由于项目需要,要在内核空间获取当前时间(常用格式),我知道do_gettimeofday()等可以获取绝对时间,有没有内核函数可以直接获取当前常用 ...
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#80linux中时间精度的获取问题 - 学步园
下午老刘给我说不能用do_gettimeofday因为他的精度虽然可以到微秒但是是依靠jiffies的精度(在linux 2.6.27内核中这个jiffies的单位是1毫秒)来更新 ...
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#81How can I get system time ?(module programming in C ...
do_gettimeofday (&tv1) current_kernel_time() do_gettimeofday function returns a value like that when the time was about 21:42: ...
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#82kernel获取毫秒、微妙时间
#include <linux/time.h> //需要包含的头文件struct timeval tstart; //结构体do_gettimeofday(&tstart);//获取时间//打印秒、微妙值printk("%s, ...
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#83DM3730 do_gettimeofday() returns system uptime, not time ...
do_gettimeofday () is supposed to return the wall time (time since epoch), but is returning the system uptime instead.
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#84Linux - Unresolved symbols and configuration mismatches
/lib/modules/2.4.2-2smp/misc/dgrp.o: unresolved symbol do_gettimeofday /lib/modules/2.4.2-2smp/misc/dgrp.o: unresolved symbol del_timer
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#85410.93 - Compile fail with Kernel 5.0-rc1 - Linux - NVIDIA ...
Change do_gettimeofday to efi_gettimeofday in NVIDIA-Linux-x86_64-410.93/kernel/nvidia/os-interface.c (multiple occurrences…)
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#86淺談時間函數gettimeofday的成本 - Linux教程網
NULL)) {; struct timeval ktv;; do_gettimeofday(&ktv); ... 大家看到,它調用do_gettimeofday函數取到當前時間存儲到局部變量ktv ...
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#87尝试使用do_gettimeofday()测量内核中的时间时发生链接错误
我正在尝试计算一些驱动程序调用的函数。所以我打电话给 do_gettimeofday 以获得 struct timeval</
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#88456225 – clocksource modules not built on x86_64 - Red Hat ...
... of `do_gettimeofday' arch/x86_64/kernel/built-in.o:/usr/src/redhat/BUILD/kernel-2.6.18/linux-2.6.18.x86_64/arch/x86_64/kernel/time.c:137: first defined ...
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#89手把手教你做北邮操作系统小学期实验一——Linux启动过程优化2
do_gettimeofday (&gettime_after);和一个打印时间的函数. //添加在console_init();函数的前后. 在420多行添加. do_gettimeofday(&gettime_before);.
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#90Linux kernel 驅動程式特有的時間管理機制, HZ, tick 與jiffies
do_gettimeofday 的範例: ... volatile int i; printk(KERN_ALERT "driver loaded: %s\n", __func__); do_gettimeofday(&now); diff = now.tv_usec; ...
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#91Beaglebone do_gettimeofday()給錯誤時間 - 優文庫
我使用do_gettimeofday()函數來測量時間。當我在使用poll()函數的用戶空間程序中做同樣的事情時,我可以獲得正確的值(它顯示100us左右的波形大約爲1007 us), ...
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#92Определение текущего времени
void do_gettimeofday(struct timeval *tv);. Исходник утверждает, что do_gettimeofday имеет "разрешение около микросекунды", поскольку она запрашивает аппаратные ...
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#93Linux内核中获取时间并转换成本地时区时间 - 极客分享
do_gettimeofday (&(txc.time)); /* 把UTC时间调整为本地时间*/ txc.time.tv_sec -= sys_tz.tz_minuteswest * 60; /* 算出时间中的年月日等数值到tm中 ...
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#94I get an error when building the OpenCL driver for CentOS 7 ...
After adding a do_gettimeofday(...) function prototype to the aclpci_dma.h header file, the compiles successfully; however, ...
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#95Linux kernel內取得時間
struct timeval tv1; do_gettimeofday(&tv1);. 經由tv內部的tv_sec就可以取得目前系統時間的 ...
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#96test: Replace timeval with ktime_t in speedtest.c and torturetest.c
This patch also changes do_gettimeofday() to ktime_get() accordingly, since ktime_get returns a ktime_t, but do_gettimeofday returns a ...
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#97計算比jiffies更精確的時間 - Rex Cat的部落格
此時可以用void do_gettimeofday(struct timeval *tv)來取得microsecond精準度的時間. 時間計數方法可用. struct timeval time1, time2;. do_gettimeofday(&time1);.
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#987.2. 获知当前时间_Linux 设备驱动(第三版)_w3cschool - 编程狮
为此, <linux/time.h> 输出了do_gettimeofday 函数. 当被调用时, 它填充一个struct timeval 指针-- 和在gettimeofday 系统调用中使用的相同-- 使用类似的秒和毫秒值.
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#99Embedded Linux: Hardware, Software, and Interfacing
do_gettimeofday — The resolution of do_gettimeofday is about lus . The do_gettimeofday function fills a timeval data structure with the number of seconds ...
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#100Linux Device Drivers - 第 185 頁 - Google 圖書結果
If your driver really needs the current time , the do_gettimeofday function comes to the rescue . This function doesn't tell the current day of the week or ...
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do_gettimeofday 在 コバにゃんチャンネル Youtube 的最讚貼文
do_gettimeofday 在 大象中醫 Youtube 的最佳解答
do_gettimeofday 在 大象中醫 Youtube 的最佳解答