(last_ktime >= ktime_to_ns(cur_ktime))) { pr_err("failed to get ktime, last ktime is %llu, " "current ktime is %llu\n", last_ktime, ktime_to_ns(cur_ktime)); BUG(); } last_ktime = ktime_to_ns(cur_ktime); return cur_ktime; } EXPORT_SYMBOL_GPL(ktime_get); ...
我看到有两个函数:ktime_get_ns()/ktime_get_ms()我尝试在我的代码上应用,如下所示: #include <linux/ktime.h>ktime_t start_time, stop_time;start_time =ktime_get_ns(); for_each_process() {}//My 浏览327提问于2021-10-28得票数0 ...
下面是一些常见的ktime用法: 1.获取当前时间: ```c ktime_t current_time = ktime_get(); ``` 2.将ktime转换为纳秒: ```c s64 ns = ktime_to_ns(current_time); ``` 3.将纳秒转换为ktime: ```c ktime_t time = ns_to_ktime(ns); ``` 4.获取两个ktime之间的时间差: ```c k...
ktime_get_coarse_ns等函数用于纳秒级时间获取。ktime_mono_to_real将单调时间转换为真实时间。ktime_get_ns等函数用于系统时间、真实时间等纳秒级获取。ktime_get_boottime_ts64和ktime_get_coarse_boottime_ts64用于获取启动时间。ktime_get_boottime_seconds获取秒级启动时间。ktime_get_clocktai_...
ktime_add_ns宏和ktime_sub_ns宏分别用于将纳秒值加到ktime_t类型的时间变量上和从ktime_t类型的时间变量中减去纳秒值。本质上这两个函数和上面的add、sub是相同的。 //71~74行staticinlinektime_ttimespec64_to_ktime(structtimespec64ts){returnktime_set(ts.tv_sec,ts.tv_nsec);} ...
commit58bfea9upstream. In commit27727df("Avoid taking lock in NMI path with CONFIG_DEBUG_TIMEKEEPING"), I changed the logic to open-code the timekeeping_get_ns() function, but I forgot to include the unit conversion from cycles to nanoseconds, breaking the function's output, which impacts ...
static inline s64 hrtimer_get_expires_ns(const struct hrtimer *timer) @@ -297,7 +297,7 @@ extern void hrtimer_peek_ahead_timers(void); * this resolution values. */ # define HIGH_RES_NSEC 1 # define KTIME_HIGH_RES (ktime_t) { .tv64 = HIGH_RES_NSEC }...
● tstamp (of type ktime_t ) : time stamp of receiving the packet. – net_enable_timestamp() must be called in order to get values. net_device ● net_device represents a network interface card. ● There are cases...
*/ static inline ktime_t timespec64_to_ktime(struct timespec64 ts) { return ktime_set(ts.tv_sec, ts.tv_nsec); } /* Map the ktime_t to timespec conversion to ns_to_timespec function */ #define ktime_to_timespec64(kt) ns_to_timespec64((kt)) /* Convert ktim...
#define ktime_to_ns(kt) (kt) /** * ktime_equal - Compares two ktime_t variables to see if they are equal * @cmp1: comparable1 * @cmp2: comparable2 * * Compare two ktime_t variables. * * Return: 1 if equal. */ static inline int ktime_equal(const ktime_t cmp1, const ...