On Wed, Feb 15, 2017 at 11:17:34AM +0200, Nikolay Borisov wrote: > On 15.02.2017 11:13, Peter Zijlstra wrote: > > On Wed, Feb 15, 2017 at 11:09:14AM +0200, Nikolay Borisov wrote: > >> Hello, > >> > >> I'd like to ask for the patch in the subject to be included in stable > >> kernels. Without it if one wants to see only the blocked stats this > >> becomes impossible since the information dumped by sched_debug is so > >> much that it overflows the kmsg buffer and information about blocked > >> stats is overwritten. This is especially a problem in distro kernels > >> which are based on 4.4 and have enabled CONFIG_SCHED_DEBUG - e.g. ubuntu. > > > > Who cares about the kmsg buffer? Also, just make it bigger or disable > > SCHED_DEBUG, as the name implies it _is_ a debug feature after all. > > but what if you want to use your distro's kernel and deal with custom > recompiles. That doesn't make sense, if your distro wants this information, it gets to pick what it wants. > The kernel ought to come with sensible defaults. You can turn it off if you have problems with it, I don't see this meeting the stable kernel rules. thanks, greg k-h