On Tue, Jul 12, 2022 at 12:40 AM Christian König <christian.koenig@xxxxxxx> wrote: > Am 12.07.22 um 06:22 schrieb John Stultz: > > After having to debug down through the kernel to figure out > > why my _WAIT calls were always timing out, I realized its > > an absolute timeout value instead of the more common relative > > timeouts. > > > > This detail should be called out in the documentation, as while > > the absolute value makes sense here, its not as common for timeout > > values. > > Well absolute timeout values are mandatory for making -ERESTARTSYS work > without any additional handling. Yes! I'm not saying it's wrong to use absolute values, just that relative values are common enough to create some confusion here. > So using them is recommended for ~20 years now and IIRC even documented > somewhere. So in addition to "somewhere", why not in the interface documentation as well? > See here as well https://lwn.net/Articles/17744/ how much trouble system > calls with relative timeouts are. Yep. Well aware. :) thanks -john
