Lines Matching refs:sched_clock

1 Clock sources, Clock events, sched_clock() and delay timers
11 architecture-specific overrides of the sched_clock() function and some
17 sched_clock() is used for scheduling and timestamping, and delay timers
107 sched_clock()
111 function in the kernel called sched_clock(). This function shall return the
113 may not provide an implementation of sched_clock() on its own. If a local
115 sched_clock().
117 As the name suggests, sched_clock() is used for scheduling the system,
122 Compared to clock sources, sched_clock() has to be very fast: it is called
125 for speed in sched_clock(). It however requires some of the same basic
128 The sched_clock() function may wrap only on unsigned long long boundaries,
137 The clock driving sched_clock() may stop or reset to zero during system
142 The sched_clock() function should be callable in any context, IRQ- and
148 sched_clock() nanosecond base from a 16- or 32-bit counter. Sometimes the
151 On SMP systems, it is crucial for performance that sched_clock() can be called
153 Some hardware (such as the x86 TSC) will cause the sched_clock() function to
156 that makes sched_clock() different from the ordinary clock source.