commit 1fb11298840bd9d4225abc93b512f7971a9c620f
author Linux Build Service Account <lnxbuild@quicinc.com> Tue Aug 22 20:03:35 2017 -0700
committer Gerrit - the friendly Code Review server <code-review@localhost> Tue Aug 22 20:03:35 2017 -0700
tree b36d86aa19c979f736f14e74942fbc2e1b6039bf
parent af54faadff4db26d357fceea101a131306020a64
parent 20ee7ccd76442de5360106d2d1d0a8b5513c00fb

Merge "time: sched_clock: record cycle count in suspend and resume"

kernel/time/sched_clock.c

diff --git a/kernel/time/sched_clock.c b/kernel/time/sched_clock.c
index a26036d..49237ae 100644
--- a/kernel/time/sched_clock.c
+++ b/kernel/time/sched_clock.c
@@ -70,6 +70,9 @@
 
 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);
 
@@ -274,6 +277,11 @@
 	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 +293,8 @@
 	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;
 }