$ git grep "[=\!]= CLOCK_EVT_MODE"
arch/alpha/kernel/time.c:       if (likely(ce->mode == CLOCK_EVT_MODE_PERIODIC))
arch/arc/kernel/time.c: int irq_reenable = evt->mode == CLOCK_EVT_MODE_PERIODIC;
arch/arm/mach-footbridge/dc21285-timer.c:       if (ce->mode == CLOCK_EVT_MODE_ONESHOT)
arch/arm/plat-orion/time.c:     if (mode == CLOCK_EVT_MODE_PERIODIC) {
arch/avr32/kernel/time.c:               if (evdev->mode == CLOCK_EVT_MODE_ONESHOT ||
arch/avr32/kernel/time.c:                   evdev->mode == CLOCK_EVT_MODE_RESUME) {
arch/mips/jz4740/time.c:        if (cd->mode != CLOCK_EVT_MODE_PERIODIC)
arch/mips/kernel/cevt-bcm1480.c:        if (cd->mode == CLOCK_EVT_MODE_PERIODIC)
arch/mips/kernel/cevt-sb1250.c: if (cd->mode == CLOCK_EVT_MODE_PERIODIC)
arch/mips/loongson/common/cs5536/cs5536_mfgpt.c:                if (evt->mode == CLOCK_EVT_MODE_PERIODIC ||
arch/mips/loongson/common/cs5536/cs5536_mfgpt.c:                    evt->mode == CLOCK_EVT_MODE_ONESHOT)
arch/nios2/kernel/time.c:       if (mode == CLOCK_EVT_MODE_PERIODIC)
arch/powerpc/kernel/time.c:     if (mode != CLOCK_EVT_MODE_ONESHOT)
arch/x86/kernel/apic/apic.c:                              mode != CLOCK_EVT_MODE_PERIODIC, 1);
arch/x86/kernel/i8253.c:            i8253_clockevent.mode != CLOCK_EVT_MODE_PERIODIC)
arch/x86/xen/time.c:    WARN_ON(evt->mode != CLOCK_EVT_MODE_ONESHOT);
arch/x86/xen/time.c:    WARN_ON(evt->mode != CLOCK_EVT_MODE_ONESHOT);
drivers/clocksource/arm_global_timer.c: if (evt->mode == CLOCK_EVT_MODE_ONESHOT)
drivers/clocksource/cs5535-clockevt.c:  if (mode == CLOCK_EVT_MODE_PERIODIC)
drivers/clocksource/cs5535-clockevt.c:  if (cs5535_tick_mode == CLOCK_EVT_MODE_SHUTDOWN)
drivers/clocksource/cs5535-clockevt.c:  if (cs5535_tick_mode == CLOCK_EVT_MODE_PERIODIC)
drivers/clocksource/exynos_mct.c:       if (mode == CLOCK_EVT_MODE_PERIODIC) {
drivers/clocksource/exynos_mct.c:       if (evt->mode != CLOCK_EVT_MODE_PERIODIC)
drivers/clocksource/fsl_ftm_timer.c:    if (likely(evt->mode == CLOCK_EVT_MODE_ONESHOT)) {
drivers/clocksource/i8253.c:            if (evt->mode == CLOCK_EVT_MODE_PERIODIC ||
drivers/clocksource/i8253.c:                evt->mode == CLOCK_EVT_MODE_ONESHOT) {
drivers/clocksource/qcom-timer.c:       if (evt->mode == CLOCK_EVT_MODE_ONESHOT) {
drivers/clocksource/rockchip_timer.c:   if (ce->mode == CLOCK_EVT_MODE_ONESHOT)
drivers/clocksource/sh_cmt.c:                   if (ch->ced.mode == CLOCK_EVT_MODE_ONESHOT) {
drivers/clocksource/sh_cmt.c:                   if ((ch->ced.mode == CLOCK_EVT_MODE_SHUTDOWN)
drivers/clocksource/sh_cmt.c:   BUG_ON(ced->mode != CLOCK_EVT_MODE_ONESHOT);
drivers/clocksource/sh_tmu.c:   if (ch->ced.mode == CLOCK_EVT_MODE_ONESHOT)
drivers/clocksource/sh_tmu.c:   BUG_ON(ced->mode != CLOCK_EVT_MODE_ONESHOT);
drivers/clocksource/tcb_clksrc.c:       if (tcd->clkevt.mode == CLOCK_EVT_MODE_PERIODIC
drivers/clocksource/tcb_clksrc.c:                       || tcd->clkevt.mode == CLOCK_EVT_MODE_ONESHOT) {
drivers/clocksource/time-armada-370-xp.c:       if (mode == CLOCK_EVT_MODE_PERIODIC) {
drivers/clocksource/time-orion.c:       if (mode == CLOCK_EVT_MODE_PERIODIC) {
drivers/clocksource/timer-atlas7.c:     if (ce->mode == CLOCK_EVT_MODE_ONESHOT)
drivers/clocksource/timer-atmel-pit.c:  if ((data->clkevt.mode == CLOCK_EVT_MODE_PERIODIC) &&
drivers/clocksource/vf_pit_timer.c:     if (likely(evt->mode == CLOCK_EVT_MODE_ONESHOT))
drivers/hv/hv.c:        WARN_ON(evt->mode != CLOCK_EVT_MODE_ONESHOT);
kernel/time/clockevents.c:              BUG_ON(dev->mode != CLOCK_EVT_MODE_UNUSED);