diff options
Diffstat (limited to 'kernel/time/sched_clock.c')
| -rw-r--r-- | kernel/time/sched_clock.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/kernel/time/sched_clock.c b/kernel/time/sched_clock.c index a26036d37a38..699aff70bbfa 100644 --- a/kernel/time/sched_clock.c +++ b/kernel/time/sched_clock.c @@ -70,6 +70,11 @@ struct clock_data { static struct hrtimer sched_clock_timer; static int irqtime = -1; +static int initialized; +static u64 suspend_ns; +static u64 suspend_cycles; +static u64 resume_cycles; + core_param(irqtime, irqtime, int, 0400); @@ -231,6 +236,11 @@ sched_clock_register(u64 (*read)(void), int bits, unsigned long rate) pr_debug("Registered %pF as sched_clock source\n", read); } +int sched_clock_initialized(void) +{ + return initialized; +} + void __init sched_clock_postinit(void) { /* @@ -249,6 +259,8 @@ void __init sched_clock_postinit(void) hrtimer_init(&sched_clock_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); sched_clock_timer.function = sched_clock_poll; hrtimer_start(&sched_clock_timer, cd.wrap_kt, HRTIMER_MODE_REL); + + initialized = 1; } /* @@ -274,6 +286,11 @@ static int sched_clock_suspend(void) struct clock_read_data *rd = &cd.read_data[0]; update_sched_clock(); + + suspend_ns = rd->epoch_ns; + suspend_cycles = rd->epoch_cyc; + pr_info("suspend ns:%17llu suspend cycles:%17llu\n", + rd->epoch_ns, rd->epoch_cyc); hrtimer_cancel(&sched_clock_timer); rd->read_sched_clock = suspended_sched_clock_read; @@ -285,6 +302,8 @@ static void sched_clock_resume(void) struct clock_read_data *rd = &cd.read_data[0]; rd->epoch_cyc = cd.actual_read_sched_clock(); + resume_cycles = rd->epoch_cyc; + pr_info("resume cycles:%17llu\n", rd->epoch_cyc); hrtimer_start(&sched_clock_timer, cd.wrap_kt, HRTIMER_MODE_REL); rd->read_sched_clock = cd.actual_read_sched_clock; } |