void getnstimeofday(struct timespec *ts) { *ts = xtime; nsecs = timekeeping_get_ns(); timespec_add_ns(ts, nsecs); } 最终的时间是xtime加上当前时刻距离上次中断的偏移。 xtime的更新速度以HZ为基准,若在两个tick之间调用了gettimeofday,则timekeeping_get_ns可以算出当前时刻距上次中断过了多长时间(精...
void getnstimeofday(struct timespec *ts) { *ts = xtime; nsecs = timekeeping_get_ns(); timespec_add_ns(ts, nsecs); } 最终的时间是xtime加上当前时刻距离上次中断的偏移。 xtime的更新速度以HZ为基准,若在两个tick之间调用了gettimeofday,则timekeeping_get_ns可以算出当前时刻距上次中断过了多长时间(精...
void getnstimeofday(struct timespec *ts) { *ts = xtime; nsecs = timekeeping_get_ns(); timespec_add_ns(ts, nsecs); } 最终的时间是xtime加上当前时刻距离上次中断的偏移。 xtime的更新速度以HZ为基准,若在两个tick之间调用了gettimeofday,则timekeeping_get_ns可以算出当前时刻距上次中断过了多长时间(精...
void getnstimeofday(struct timespec *ts) { *ts = xtime; nsecs = timekeeping_get_ns(); timespec_add_ns(ts, nsecs); } 最终的时间是xtime加上当前时刻距离上次中断的偏移。 xtime的更新速度以HZ为基准,若在两个tick之间调用了gettimeofday,则timekeeping_get_ns可以算出当前时刻距上次中断过了多长时间(精...
Syntax:```u64 bpf_ktime_get_ns(void)``` Return:current time innanoseconds Return:u64 number ofnanoseconds. Starts at system boot time but stops during suspend. Examples in situ: [search /examples](https://github.com/iovisor/bcc/search?q=bpf_ktime_get_ns+path%3Aexamples&type=Code), ...
(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); ...
Annotation kernel can get tool activity Download SCCT Chinese Name:ktime_get_boottime_ns Proto:static inline u64 ktime_get_boottime_ns(void) Type:u64 Parameter:Nothing164 Return Convert ktime_t to nanoseconds Caller NameDescribe copy_process Create a new process bpf_prog_load Source...
case BPF_FUNC_ktime_get_ns: return &bpf_ktime_get_ns_proto; case BPF_FUNC_ktime_get_boot_ns: return &bpf_ktime_get_boot_ns_proto; case BPF_FUNC_tail_call: return &bpf_tail_call_proto; case BPF_FUNC_get_prandom_u32: 1 change: 1 addition & 0 deletions 1 inclu...
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_...
函数名称:Convert ktime_t to nanoseconds 函数原型:static inline s64 ktime_to_ns(const ktime_t kt) 返回类型:s64 参数: 类型参数名称 const ktime_tkt 99返回:kt 源代码转换工具 开放的插件接口X 支持:c/c++/esqlc/java Oracle/Informix/Mysql ...