C++ (Cpp) iter_div_u64_rem示例

示例#1

文件： time.c 项目： 325116067/semc-qsd8x50

static void do_stolen_accounting(void)
{
	struct vcpu_runstate_info state;
	struct vcpu_runstate_info *snap;
	s64 blocked, runnable, offline, stolen;
	cputime_t ticks;

	get_runstate_snapshot(&state);

	WARN_ON(state.state != RUNSTATE_running);

	snap = &__get_cpu_var(runstate_snapshot);

	/* work out how much time the VCPU has not been runn*ing*  */
	blocked = state.time[RUNSTATE_blocked] - snap->time[RUNSTATE_blocked];
	runnable = state.time[RUNSTATE_runnable] - snap->time[RUNSTATE_runnable];
	offline = state.time[RUNSTATE_offline] - snap->time[RUNSTATE_offline];

	*snap = state;

	/* Add the appropriate number of ticks of stolen time,
	   including any left-overs from last time. */
	stolen = runnable + offline + __get_cpu_var(residual_stolen);

	if (stolen < 0)
		stolen = 0;

	ticks = iter_div_u64_rem(stolen, NS_PER_TICK, &stolen);
	__get_cpu_var(residual_stolen) = stolen;
	account_steal_ticks(ticks);

	/* Add the appropriate number of ticks of blocked time,
	   including any left-overs from last time. */
	blocked += __get_cpu_var(residual_blocked);

	if (blocked < 0)
		blocked = 0;

	ticks = iter_div_u64_rem(blocked, NS_PER_TICK, &blocked);
	__get_cpu_var(residual_blocked) = blocked;
	account_idle_ticks(ticks);
}

示例#2

文件： time.c 项目： DirtyDroidX/android_kernel_htc_m8ul

static void do_stolen_accounting(void)
{
	struct vcpu_runstate_info state;
	struct vcpu_runstate_info *snap;
	s64 blocked, runnable, offline, stolen;
	cputime_t ticks;

	get_runstate_snapshot(&state);

	WARN_ON(state.state != RUNSTATE_running);

	snap = &__get_cpu_var(xen_runstate_snapshot);

	
	blocked = state.time[RUNSTATE_blocked] - snap->time[RUNSTATE_blocked];
	runnable = state.time[RUNSTATE_runnable] - snap->time[RUNSTATE_runnable];
	offline = state.time[RUNSTATE_offline] - snap->time[RUNSTATE_offline];

	*snap = state;

	stolen = runnable + offline + __this_cpu_read(xen_residual_stolen);

	if (stolen < 0)
		stolen = 0;

	ticks = iter_div_u64_rem(stolen, NS_PER_TICK, &stolen);
	__this_cpu_write(xen_residual_stolen, stolen);
	account_steal_ticks(ticks);

	blocked += __this_cpu_read(xen_residual_blocked);

	if (blocked < 0)
		blocked = 0;

	ticks = iter_div_u64_rem(blocked, NS_PER_TICK, &blocked);
	__this_cpu_write(xen_residual_blocked, blocked);
	account_idle_ticks(ticks);
}