Re: [PATCH] cpustat: print watchdog time and statistics of soft and hard interrupts in soft lockup scenes

[c00423981 <caomeng5@huawei.com>]

Sorry, I cannot understand this problem accurately. I try to understand it and I guess what you want
to express is that the return value type should be cputime64_t but not u64, just like as follows:

+static cputime64_t cpustat_curr_cputime(int cpu, int index)
+{
+	cputime64_t time;
+
+	if (index == CPUTIME_IDLE)
+		time = get_idle_time(cpu);
+	else if (index == CPUTIME_IOWAIT)
+		time = get_iowait_time(cpu);

I don't know if I understand it correctly. Looking forward to your answer.




On 2019/8/20 19:04, Peter Zijlstra wrote:
> On Mon, Aug 19, 2019 at 03:12:24PM +0800, c00423981 wrote:
>> +static u64 cpustat_curr_cputime(int cpu, int index)
>> +{
>> +	u64 time;
>> +
>> +	if (index == CPUTIME_IDLE)
>> +		time = get_idle_time(cpu);
>> +	else if (index == CPUTIME_IOWAIT)
>> +		time = get_iowait_time(cpu);
> 
> NAK; don't add new users of this terminally broken interface.
> 
>