On Mon, Sep 04, 2017 at 03:54:23PM +0800, Ethan Zhao wrote: > Peter, > > > On 2017/9/4 15:49, Peter Zijlstra wrote: > > On Sat, Sep 02, 2017 at 02:57:32PM +0800, Ethan Zhao wrote: > > > diff --git a/kernel/sysctl.c b/kernel/sysctl.c > > > index 6648fbb..609bed2 100644 > > > --- a/kernel/sysctl.c > > > +++ b/kernel/sysctl.c > > > @@ -367,7 +367,7 @@ static int sysrq_sysctl_handler(struct ctl_table *table, int write, > > > .data = &sysctl_sched_time_avg, > > > .maxlen = sizeof(unsigned int), > > > .mode = 0644, > > > - .proc_handler = proc_dointvec, > > > + .proc_handler = sched_time_avg_handler, > > *sigh*, what's wrong with the below? Too easy? > :), seems I walked zigzag several cycles to get the right point. It sounds like negative values are not possible too, right? If so then you can use proc_douintvec_minmax(). Luis
