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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>
This commit is contained in:
Thomas Gleixner 2015-04-14 21:08:34 +00:00
parent 056a3cacbc
commit a6ffebce7f
3 changed files with 7 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
include/linux/hrtimer.h
View File

@ -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];
};

4
kernel/time/hrtimer.c
View File

@ -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.

2
kernel/time/timer_list.c
View File

@ -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