On Mon, May 16, 2022 at 11:30:58AM +0100, Peter Maydell wrote:
> The traditional ptimer behaviour includes a collection of weird edge
> case behaviours. In 2016 we improved the ptimer implementation to
> fix these and generally make the behaviour more flexible, with
> ptimers opting in to the new behaviour by passing an appropriate set
> of policy flags to ptimer_init(). For backwards-compatibility, we
> defined PTIMER_POLICY_DEFAULT (which sets no flags) to give the old
> weird behaviour.
>
> This turns out to be a poor choice of name, because people writing
> new devices which use ptimers are misled into thinking that the
> default is probably a sensible choice of flags, when in fact it is
> almost always not what you want. Rename PTIMER_POLICY_DEFAULT to
> PTIMER_POLICY_LEGACY and beef up the comment to more clearly say that
> new devices should not be using it.
>
> The code-change part of this commit was produced by
> sed -i -e 's/PTIMER_POLICY_DEFAULT/PTIMER_POLICY_LEGACY/g' $(git grep -l
> PTIMER_POLICY_DEFAULT)
>
> Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
> ---
> include/hw/ptimer.h | 16 ++++++++++++----
> hw/arm/musicpal.c | 2 +-
> hw/dma/xilinx_axidma.c | 2 +-
> hw/dma/xlnx_csu_dma.c | 2 +-
> hw/m68k/mcf5206.c | 2 +-
> hw/m68k/mcf5208.c | 2 +-
> hw/net/can/xlnx-zynqmp-can.c | 2 +-
> hw/net/fsl_etsec/etsec.c | 2 +-
> hw/net/lan9118.c | 2 +-
> hw/rtc/exynos4210_rtc.c | 4 ++--
> hw/timer/allwinner-a10-pit.c | 2 +-
> hw/timer/altera_timer.c | 2 +-
> hw/timer/arm_timer.c | 2 +-
> hw/timer/digic-timer.c | 2 +-
> hw/timer/etraxfs_timer.c | 6 +++---
> hw/timer/exynos4210_mct.c | 6 +++---
> hw/timer/exynos4210_pwm.c | 2 +-
> hw/timer/grlib_gptimer.c | 2 +-
> hw/timer/imx_epit.c | 4 ++--
> hw/timer/imx_gpt.c | 2 +-
> hw/timer/mss-timer.c | 2 +-
> hw/timer/sh_timer.c | 2 +-
> hw/timer/slavio_timer.c | 2 +-
> hw/timer/xilinx_timer.c | 2 +-
> tests/unit/ptimer-test.c | 4 ++--
> 25 files changed, 43 insertions(+), 35 deletions(-)
>
> diff --git a/include/hw/ptimer.h b/include/hw/ptimer.h
> index c443218475b..4dc02b0de47 100644
> --- a/include/hw/ptimer.h
> +++ b/include/hw/ptimer.h
> @@ -33,9 +33,17 @@
> * to stderr when the guest attempts to enable the timer.
> */
>
> -/* The default ptimer policy retains backward compatibility with the legacy
> - * timers. Custom policies are adjusting the default one. Consider providing
> - * a correct policy for your timer.
> +/*
> + * The 'legacy' ptimer policy retains backward compatibility with the
> + * traditional ptimer behaviour from before policy flags were introduced.
> + * It has several weird behaviours which don't match typical hardware
> + * timer behaviour. For a new device using ptimers, you should not
> + * use PTIMER_POLICY_LEGACY, but instead check the actual behaviour
> + * that you need and specify the right set of policy flags to get that.
> + *
> + * If you are overhauling an existing device that uses PTIMER_POLICY_LEGACY
> + * and are in a position to check or test the real hardware behaviour,
> + * consider updating it to specify the right policy flags.
> *
> * The rough edges of the default policy:
> * - Starting to run with a period = 0 emits error message and stops the
> @@ -54,7 +62,7 @@
> * since the last period, effectively restarting the timer with a
> * counter = counter value at the moment of change (.i.e. one less).
> */
> -#define PTIMER_POLICY_DEFAULT 0
> +#define PTIMER_POLICY_LEGACY 0
>
> /* Periodic timer counter stays with "0" for a one period before wrapping
> * around. */
> diff --git a/hw/arm/musicpal.c b/hw/arm/musicpal.c
> index 7c840fb4283..b65c020115a 100644
> --- a/hw/arm/musicpal.c
> +++ b/hw/arm/musicpal.c
> @@ -464,7 +464,7 @@ static void mv88w8618_timer_init(SysBusDevice *dev,
> mv88w8618_timer_state *s,
> sysbus_init_irq(dev, &s->irq);
> s->freq = freq;
>
> - s->ptimer = ptimer_init(mv88w8618_timer_tick, s, PTIMER_POLICY_DEFAULT);
> + s->ptimer = ptimer_init(mv88w8618_timer_tick, s, PTIMER_POLICY_LEGACY);
> }
>
> static uint64_t mv88w8618_pit_read(void *opaque, hwaddr offset,
> diff --git a/hw/dma/xilinx_axidma.c b/hw/dma/xilinx_axidma.c
> index bc383f53cca..cbb8f0f1696 100644
> --- a/hw/dma/xilinx_axidma.c
> +++ b/hw/dma/xilinx_axidma.c
> @@ -552,7 +552,7 @@ static void xilinx_axidma_realize(DeviceState *dev, Error
> **errp)
>
> st->dma = s;
> st->nr = i;
> - st->ptimer = ptimer_init(timer_hit, st, PTIMER_POLICY_DEFAULT);
> + st->ptimer = ptimer_init(timer_hit, st, PTIMER_POLICY_LEGACY);
> ptimer_transaction_begin(st->ptimer);
> ptimer_set_freq(st->ptimer, s->freqhz);
> ptimer_transaction_commit(st->ptimer);
> diff --git a/hw/dma/xlnx_csu_dma.c b/hw/dma/xlnx_csu_dma.c
> index 60ada3286b4..1ce52ea5a2b 100644
> --- a/hw/dma/xlnx_csu_dma.c
> +++ b/hw/dma/xlnx_csu_dma.c
> @@ -666,7 +666,7 @@ static void xlnx_csu_dma_realize(DeviceState *dev, Error
> **errp)
> sysbus_init_irq(SYS_BUS_DEVICE(dev), &s->irq);
>
> s->src_timer = ptimer_init(xlnx_csu_dma_src_timeout_hit,
> - s, PTIMER_POLICY_DEFAULT);
> + s, PTIMER_POLICY_LEGACY);
>
> s->attr = MEMTXATTRS_UNSPECIFIED;
>
> diff --git a/hw/m68k/mcf5206.c b/hw/m68k/mcf5206.c
> index 6d93d761a5e..2ab1b4f0593 100644
> --- a/hw/m68k/mcf5206.c
> +++ b/hw/m68k/mcf5206.c
> @@ -152,7 +152,7 @@ static m5206_timer_state *m5206_timer_init(qemu_irq irq)
> m5206_timer_state *s;
>
> s = g_new0(m5206_timer_state, 1);
> - s->timer = ptimer_init(m5206_timer_trigger, s, PTIMER_POLICY_DEFAULT);
> + s->timer = ptimer_init(m5206_timer_trigger, s, PTIMER_POLICY_LEGACY);
> s->irq = irq;
> m5206_timer_reset(s);
> return s;
> diff --git a/hw/m68k/mcf5208.c b/hw/m68k/mcf5208.c
> index 655207e393d..be1033f84f8 100644
> --- a/hw/m68k/mcf5208.c
> +++ b/hw/m68k/mcf5208.c
> @@ -197,7 +197,7 @@ static void mcf5208_sys_init(MemoryRegion *address_space,
> qemu_irq *pic)
> /* Timers. */
> for (i = 0; i < 2; i++) {
> s = g_new0(m5208_timer_state, 1);
> - s->timer = ptimer_init(m5208_timer_trigger, s,
> PTIMER_POLICY_DEFAULT);
> + s->timer = ptimer_init(m5208_timer_trigger, s, PTIMER_POLICY_LEGACY);
> memory_region_init_io(&s->iomem, NULL, &m5208_timer_ops, s,
> "m5208-timer", 0x00004000);
> memory_region_add_subregion(address_space, 0xfc080000 + 0x4000 * i,
> diff --git a/hw/net/can/xlnx-zynqmp-can.c b/hw/net/can/xlnx-zynqmp-can.c
> index 22bb8910fa8..82ac48cee24 100644
> --- a/hw/net/can/xlnx-zynqmp-can.c
> +++ b/hw/net/can/xlnx-zynqmp-can.c
> @@ -1079,7 +1079,7 @@ static void xlnx_zynqmp_can_realize(DeviceState *dev,
> Error **errp)
>
> /* Allocate a new timer. */
> s->can_timer = ptimer_init(xlnx_zynqmp_can_ptimer_cb, s,
> - PTIMER_POLICY_DEFAULT);
> + PTIMER_POLICY_LEGACY);
>
> ptimer_transaction_begin(s->can_timer);
>
> diff --git a/hw/net/fsl_etsec/etsec.c b/hw/net/fsl_etsec/etsec.c
> index 6d50c395439..4e6cc708dec 100644
> --- a/hw/net/fsl_etsec/etsec.c
> +++ b/hw/net/fsl_etsec/etsec.c
> @@ -393,7 +393,7 @@ static void etsec_realize(DeviceState *dev, Error **errp)
> object_get_typename(OBJECT(dev)), dev->id,
> etsec);
> qemu_format_nic_info_str(qemu_get_queue(etsec->nic),
> etsec->conf.macaddr.a);
>
> - etsec->ptimer = ptimer_init(etsec_timer_hit, etsec,
> PTIMER_POLICY_DEFAULT);
> + etsec->ptimer = ptimer_init(etsec_timer_hit, etsec,
> PTIMER_POLICY_LEGACY);
> ptimer_transaction_begin(etsec->ptimer);
> ptimer_set_freq(etsec->ptimer, 100);
> ptimer_transaction_commit(etsec->ptimer);
> diff --git a/hw/net/lan9118.c b/hw/net/lan9118.c
> index 6aff424cbe5..456ae38107b 100644
> --- a/hw/net/lan9118.c
> +++ b/hw/net/lan9118.c
> @@ -1363,7 +1363,7 @@ static void lan9118_realize(DeviceState *dev, Error
> **errp)
> s->pmt_ctrl = 1;
> s->txp = &s->tx_packet;
>
> - s->timer = ptimer_init(lan9118_tick, s, PTIMER_POLICY_DEFAULT);
> + s->timer = ptimer_init(lan9118_tick, s, PTIMER_POLICY_LEGACY);
> ptimer_transaction_begin(s->timer);
> ptimer_set_freq(s->timer, 10000);
> ptimer_set_limit(s->timer, 0xffff, 1);
> diff --git a/hw/rtc/exynos4210_rtc.c b/hw/rtc/exynos4210_rtc.c
> index ae67641de66..d1620c7a2ac 100644
> --- a/hw/rtc/exynos4210_rtc.c
> +++ b/hw/rtc/exynos4210_rtc.c
> @@ -564,14 +564,14 @@ static void exynos4210_rtc_init(Object *obj)
> Exynos4210RTCState *s = EXYNOS4210_RTC(obj);
> SysBusDevice *dev = SYS_BUS_DEVICE(obj);
>
> - s->ptimer = ptimer_init(exynos4210_rtc_tick, s, PTIMER_POLICY_DEFAULT);
> + s->ptimer = ptimer_init(exynos4210_rtc_tick, s, PTIMER_POLICY_LEGACY);
> ptimer_transaction_begin(s->ptimer);
> ptimer_set_freq(s->ptimer, RTC_BASE_FREQ);
> exynos4210_rtc_update_freq(s, 0);
> ptimer_transaction_commit(s->ptimer);
>
> s->ptimer_1Hz = ptimer_init(exynos4210_rtc_1Hz_tick,
> - s, PTIMER_POLICY_DEFAULT);
> + s, PTIMER_POLICY_LEGACY);
> ptimer_transaction_begin(s->ptimer_1Hz);
> ptimer_set_freq(s->ptimer_1Hz, RTC_BASE_FREQ);
> ptimer_transaction_commit(s->ptimer_1Hz);
> diff --git a/hw/timer/allwinner-a10-pit.c b/hw/timer/allwinner-a10-pit.c
> index c3fc2a4daaf..971f78462ab 100644
> --- a/hw/timer/allwinner-a10-pit.c
> +++ b/hw/timer/allwinner-a10-pit.c
> @@ -275,7 +275,7 @@ static void a10_pit_init(Object *obj)
>
> tc->container = s;
> tc->index = i;
> - s->timer[i] = ptimer_init(a10_pit_timer_cb, tc,
> PTIMER_POLICY_DEFAULT);
> + s->timer[i] = ptimer_init(a10_pit_timer_cb, tc,
> PTIMER_POLICY_LEGACY);
> }
> }
>
> diff --git a/hw/timer/altera_timer.c b/hw/timer/altera_timer.c
> index c6e02d2b5a7..0f1f54206a3 100644
> --- a/hw/timer/altera_timer.c
> +++ b/hw/timer/altera_timer.c
> @@ -185,7 +185,7 @@ static void altera_timer_realize(DeviceState *dev, Error
> **errp)
> return;
> }
>
> - t->ptimer = ptimer_init(timer_hit, t, PTIMER_POLICY_DEFAULT);
> + t->ptimer = ptimer_init(timer_hit, t, PTIMER_POLICY_LEGACY);
> ptimer_transaction_begin(t->ptimer);
> ptimer_set_freq(t->ptimer, t->freq_hz);
> ptimer_transaction_commit(t->ptimer);
> diff --git a/hw/timer/arm_timer.c b/hw/timer/arm_timer.c
> index 84cf2726bb3..69c88634722 100644
> --- a/hw/timer/arm_timer.c
> +++ b/hw/timer/arm_timer.c
> @@ -180,7 +180,7 @@ static arm_timer_state *arm_timer_init(uint32_t freq)
> s->freq = freq;
> s->control = TIMER_CTRL_IE;
>
> - s->timer = ptimer_init(arm_timer_tick, s, PTIMER_POLICY_DEFAULT);
> + s->timer = ptimer_init(arm_timer_tick, s, PTIMER_POLICY_LEGACY);
> vmstate_register(NULL, VMSTATE_INSTANCE_ID_ANY, &vmstate_arm_timer, s);
> return s;
> }
> diff --git a/hw/timer/digic-timer.c b/hw/timer/digic-timer.c
> index e3aae4a45a4..d5186f44549 100644
> --- a/hw/timer/digic-timer.c
> +++ b/hw/timer/digic-timer.c
> @@ -139,7 +139,7 @@ static void digic_timer_init(Object *obj)
> {
> DigicTimerState *s = DIGIC_TIMER(obj);
>
> - s->ptimer = ptimer_init(digic_timer_tick, NULL, PTIMER_POLICY_DEFAULT);
> + s->ptimer = ptimer_init(digic_timer_tick, NULL, PTIMER_POLICY_LEGACY);
>
> /*
> * FIXME: there is no documentation on Digic timer
> diff --git a/hw/timer/etraxfs_timer.c b/hw/timer/etraxfs_timer.c
> index 139e5b86a44..ecc2831bafb 100644
> --- a/hw/timer/etraxfs_timer.c
> +++ b/hw/timer/etraxfs_timer.c
> @@ -370,9 +370,9 @@ static void etraxfs_timer_realize(DeviceState *dev, Error
> **errp)
> ETRAXTimerState *t = ETRAX_TIMER(dev);
> SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
>
> - t->ptimer_t0 = ptimer_init(timer0_hit, t, PTIMER_POLICY_DEFAULT);
> - t->ptimer_t1 = ptimer_init(timer1_hit, t, PTIMER_POLICY_DEFAULT);
> - t->ptimer_wd = ptimer_init(watchdog_hit, t, PTIMER_POLICY_DEFAULT);
> + t->ptimer_t0 = ptimer_init(timer0_hit, t, PTIMER_POLICY_LEGACY);
> + t->ptimer_t1 = ptimer_init(timer1_hit, t, PTIMER_POLICY_LEGACY);
> + t->ptimer_wd = ptimer_init(watchdog_hit, t, PTIMER_POLICY_LEGACY);
>
> sysbus_init_irq(sbd, &t->irq);
> sysbus_init_irq(sbd, &t->nmi);
> diff --git a/hw/timer/exynos4210_mct.c b/hw/timer/exynos4210_mct.c
> index d0e53439968..e175a9f5b9b 100644
> --- a/hw/timer/exynos4210_mct.c
> +++ b/hw/timer/exynos4210_mct.c
> @@ -1503,17 +1503,17 @@ static void exynos4210_mct_init(Object *obj)
>
> /* Global timer */
> s->g_timer.ptimer_frc = ptimer_init(exynos4210_gfrc_event, s,
> - PTIMER_POLICY_DEFAULT);
> + PTIMER_POLICY_LEGACY);
> memset(&s->g_timer.reg, 0, sizeof(struct gregs));
>
> /* Local timers */
> for (i = 0; i < 2; i++) {
> s->l_timer[i].tick_timer.ptimer_tick =
> ptimer_init(exynos4210_ltick_event, &s->l_timer[i],
> - PTIMER_POLICY_DEFAULT);
> + PTIMER_POLICY_LEGACY);
> s->l_timer[i].ptimer_frc =
> ptimer_init(exynos4210_lfrc_event, &s->l_timer[i],
> - PTIMER_POLICY_DEFAULT);
> + PTIMER_POLICY_LEGACY);
> s->l_timer[i].id = i;
> }
>
> diff --git a/hw/timer/exynos4210_pwm.c b/hw/timer/exynos4210_pwm.c
> index 220088120ee..02924a9e5b3 100644
> --- a/hw/timer/exynos4210_pwm.c
> +++ b/hw/timer/exynos4210_pwm.c
> @@ -400,7 +400,7 @@ static void exynos4210_pwm_init(Object *obj)
> sysbus_init_irq(dev, &s->timer[i].irq);
> s->timer[i].ptimer = ptimer_init(exynos4210_pwm_tick,
> &s->timer[i],
> - PTIMER_POLICY_DEFAULT);
> + PTIMER_POLICY_LEGACY);
> s->timer[i].id = i;
> s->timer[i].parent = s;
> }
> diff --git a/hw/timer/grlib_gptimer.c b/hw/timer/grlib_gptimer.c
> index d5118901097..5c4923c1e09 100644
> --- a/hw/timer/grlib_gptimer.c
> +++ b/hw/timer/grlib_gptimer.c
> @@ -383,7 +383,7 @@ static void grlib_gptimer_realize(DeviceState *dev, Error
> **errp)
>
> timer->unit = unit;
> timer->ptimer = ptimer_init(grlib_gptimer_hit, timer,
> - PTIMER_POLICY_DEFAULT);
> + PTIMER_POLICY_LEGACY);
> timer->id = i;
>
> /* One IRQ line for each timer */
> diff --git a/hw/timer/imx_epit.c b/hw/timer/imx_epit.c
> index ebd58254d15..2bf8c754b21 100644
> --- a/hw/timer/imx_epit.c
> +++ b/hw/timer/imx_epit.c
> @@ -347,9 +347,9 @@ static void imx_epit_realize(DeviceState *dev, Error
> **errp)
> 0x00001000);
> sysbus_init_mmio(sbd, &s->iomem);
>
> - s->timer_reload = ptimer_init(imx_epit_reload, s, PTIMER_POLICY_DEFAULT);
> + s->timer_reload = ptimer_init(imx_epit_reload, s, PTIMER_POLICY_LEGACY);
>
> - s->timer_cmp = ptimer_init(imx_epit_cmp, s, PTIMER_POLICY_DEFAULT);
> + s->timer_cmp = ptimer_init(imx_epit_cmp, s, PTIMER_POLICY_LEGACY);
> }
>
> static void imx_epit_class_init(ObjectClass *klass, void *data)
> diff --git a/hw/timer/imx_gpt.c b/hw/timer/imx_gpt.c
> index 5c0d9a269ce..80b83026399 100644
> --- a/hw/timer/imx_gpt.c
> +++ b/hw/timer/imx_gpt.c
> @@ -505,7 +505,7 @@ static void imx_gpt_realize(DeviceState *dev, Error
> **errp)
> 0x00001000);
> sysbus_init_mmio(sbd, &s->iomem);
>
> - s->timer = ptimer_init(imx_gpt_timeout, s, PTIMER_POLICY_DEFAULT);
> + s->timer = ptimer_init(imx_gpt_timeout, s, PTIMER_POLICY_LEGACY);
> }
>
> static void imx_gpt_class_init(ObjectClass *klass, void *data)
> diff --git a/hw/timer/mss-timer.c b/hw/timer/mss-timer.c
> index fe0ca905f3c..ee7438f1684 100644
> --- a/hw/timer/mss-timer.c
> +++ b/hw/timer/mss-timer.c
> @@ -232,7 +232,7 @@ static void mss_timer_init(Object *obj)
> for (i = 0; i < NUM_TIMERS; i++) {
> struct Msf2Timer *st = &t->timers[i];
>
> - st->ptimer = ptimer_init(timer_hit, st, PTIMER_POLICY_DEFAULT);
> + st->ptimer = ptimer_init(timer_hit, st, PTIMER_POLICY_LEGACY);
> ptimer_transaction_begin(st->ptimer);
> ptimer_set_freq(st->ptimer, t->freq_hz);
> ptimer_transaction_commit(st->ptimer);
> diff --git a/hw/timer/sh_timer.c b/hw/timer/sh_timer.c
> index c72c327bfaf..77889397669 100644
> --- a/hw/timer/sh_timer.c
> +++ b/hw/timer/sh_timer.c
> @@ -239,7 +239,7 @@ static void *sh_timer_init(uint32_t freq, int feat,
> qemu_irq irq)
> s->enabled = 0;
> s->irq = irq;
>
> - s->timer = ptimer_init(sh_timer_tick, s, PTIMER_POLICY_DEFAULT);
> + s->timer = ptimer_init(sh_timer_tick, s, PTIMER_POLICY_LEGACY);
>
> sh_timer_write(s, OFFSET_TCOR >> 2, s->tcor);
> sh_timer_write(s, OFFSET_TCNT >> 2, s->tcnt);
> diff --git a/hw/timer/slavio_timer.c b/hw/timer/slavio_timer.c
> index 90fdce4c442..8c4f6eb06b6 100644
> --- a/hw/timer/slavio_timer.c
> +++ b/hw/timer/slavio_timer.c
> @@ -405,7 +405,7 @@ static void slavio_timer_init(Object *obj)
> tc->timer_index = i;
>
> s->cputimer[i].timer = ptimer_init(slavio_timer_irq, tc,
> - PTIMER_POLICY_DEFAULT);
> + PTIMER_POLICY_LEGACY);
> ptimer_transaction_begin(s->cputimer[i].timer);
> ptimer_set_period(s->cputimer[i].timer, TIMER_PERIOD);
> ptimer_transaction_commit(s->cputimer[i].timer);
> diff --git a/hw/timer/xilinx_timer.c b/hw/timer/xilinx_timer.c
> index 1eb927eb847..c7f17cd6460 100644
> --- a/hw/timer/xilinx_timer.c
> +++ b/hw/timer/xilinx_timer.c
> @@ -223,7 +223,7 @@ static void xilinx_timer_realize(DeviceState *dev, Error
> **errp)
>
> xt->parent = t;
> xt->nr = i;
> - xt->ptimer = ptimer_init(timer_hit, xt, PTIMER_POLICY_DEFAULT);
> + xt->ptimer = ptimer_init(timer_hit, xt, PTIMER_POLICY_LEGACY);
> ptimer_transaction_begin(xt->ptimer);
> ptimer_set_freq(xt->ptimer, t->freq_hz);
> ptimer_transaction_commit(xt->ptimer);
> diff --git a/tests/unit/ptimer-test.c b/tests/unit/ptimer-test.c
> index 9176b96c1ce..22ef1ccb3a0 100644
> --- a/tests/unit/ptimer-test.c
> +++ b/tests/unit/ptimer-test.c
> @@ -768,7 +768,7 @@ static void add_ptimer_tests(uint8_t policy)
> char policy_name[256] = "";
> char *tmp;
>
> - if (policy == PTIMER_POLICY_DEFAULT) {
> + if (policy == PTIMER_POLICY_LEGACY) {
> g_sprintf(policy_name, "default");
Hi Peter,
It might be that above is clearer after this patch with "legacy" but since
it will break the automatic code changing sed command, with or without the
change:
Reviewed-by: Francisco Iglesias <francisco.igles...@amd.com>
Best regards,
Francisco Iglesias
> }
>
> @@ -862,7 +862,7 @@ static void add_ptimer_tests(uint8_t policy)
> static void add_all_ptimer_policies_comb_tests(void)
> {
> int last_policy = PTIMER_POLICY_TRIGGER_ONLY_ON_DECREMENT;
> - int policy = PTIMER_POLICY_DEFAULT;
> + int policy = PTIMER_POLICY_LEGACY;
>
> for (; policy < (last_policy << 1); policy++) {
> if ((policy & PTIMER_POLICY_TRIGGER_ONLY_ON_DECREMENT) &&
> --
> 2.25.1
>
