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Commit 88550966 authored by qctecmdr Service's avatar qctecmdr Service Committed by Gerrit - the friendly Code Review server
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Merge "time: sched_clock: record cycle count in suspend and resume"

parents 13c6da45 0205e659

kernel/time/sched_clock.c

+10 −0
Original line number Diff line number Diff line
@@ -71,6 +71,9 @@ struct clock_data { 


static struct hrtimer sched_clock_timer;

static int irqtime = -1;

static u64 suspend_ns;

static u64 suspend_cycles;

static u64 resume_cycles;



core_param(irqtime, irqtime, int, 0400);
@@ -280,6 +283,11 @@ 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;
@@ -291,6 +299,8 @@ 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;

}