Messages in this thread | | | Date | Fri, 11 Apr 2008 09:57:06 +0530 | From | Balbir Singh <> | Subject | Re: [-mm] Add an owner to the mm_struct (v9) |
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KAMEZAWA Hiroyuki wrote: > maybe I don't undestand correctlly... > > On Thu, 10 Apr 2008 14:46:02 +0530 > Balbir Singh <balbir@linux.vnet.ibm.com> wrote: > >> >> +config MM_OWNER >> + bool >> + > no default is ok here ? what value will this have if not selected ? > I'm sorry if I misunderstand Kconfig. >
The way this works is
If I select memory resource controller, CONFIG_MM_OWNER is set to y, else it does not even show up in the .config
> >> + /* >> + * Search through everything else. We should not get >> + * here often >> + */ >> + do_each_thread(g, c) { >> + if (c->mm == mm) >> + goto assign_new_owner; >> + } while_each_thread(g, c); >> + > > Again, do_each_thread() is suitable here ? > for_each_process() ? >
do_each_thread(), while_each_thread() walks all processes and threads of those processes in the system. It is a common pattern used in the kernel (see try_to_freeze_tasks() or oom_kill_task() for example).
> Thanks, > -Kame >
-- Warm Regards, Balbir Singh Linux Technology Center IBM, ISTL
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