From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 14 Apr 2015 21:08:34 +0000 (+0000)
Subject: hrtimer: Make the statistics fields smaller
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a6ffebce7f89f6f97cc22838a5d4383b15d6774f;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

hrtimer: Make the statistics fields smaller

No point in having usigned long for /proc/timer_list statistics. Make
them unsigned int.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/20150414203500.959773467@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h
index 8025156c8fa1..d39f2847754c 100644
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -187,10 +187,10 @@ struct hrtimer_cpu_base {
 	int				in_hrtirq;
 	int				hres_active;
 	int				hang_detected;
-	unsigned long			nr_events;
-	unsigned long			nr_retries;
-	unsigned long			nr_hangs;
-	ktime_t				max_hang_time;
+	unsigned int			nr_events;
+	unsigned int			nr_retries;
+	unsigned int			nr_hangs;
+	unsigned int			max_hang_time;
 #endif
 	struct hrtimer_clock_base	clock_base[HRTIMER_MAX_CLOCK_BASES];
 };
diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c
index 73131dab787e..874e0914eb3c 100644
--- a/kernel/time/hrtimer.c
+++ b/kernel/time/hrtimer.c
@@ -1327,8 +1327,8 @@ retry:
 	cpu_base->hang_detected = 1;
 	raw_spin_unlock(&cpu_base->lock);
 	delta = ktime_sub(now, entry_time);
-	if (delta.tv64 > cpu_base->max_hang_time.tv64)
-		cpu_base->max_hang_time = delta;
+	if ((unsigned int)delta.tv64 > cpu_base->max_hang_time)
+		cpu_base->max_hang_time = (unsigned int) delta.tv64;
 	/*
 	 * Limit it to a sensible value as we enforce a longer
 	 * delay. Give the CPU at least 100ms to catch up.
diff --git a/kernel/time/timer_list.c b/kernel/time/timer_list.c
index bdd5e987f115..6232fc536185 100644
--- a/kernel/time/timer_list.c
+++ b/kernel/time/timer_list.c
@@ -165,7 +165,7 @@ static void print_cpu(struct seq_file *m, int cpu, u64 now)
 	P(nr_events);
 	P(nr_retries);
 	P(nr_hangs);
-	P_ns(max_hang_time);
+	P(max_hang_time);
 #endif
 #undef P
 #undef P_ns