Messages in this thread | ![/](/images/icornerl.gif) | | Date | Tue, 30 Dec 2003 21:56:05 -0800 (PST) | From | Davide Libenzi <> | Subject | Re: [PATCH 1/2] kthread_create |
| |
On Wed, 31 Dec 2003, Rusty Russell wrote:
> In message <Pine.LNX.4.44.0312302100550.1457-100000@bigblue.dev.mdolabs.com> you write: > > Wouldn't it be better to put a kt_message inside a tast_struct? > > Expand task_struct for this one usage? I don't think that's > worthwhile. > > The whole code is written so there is no datastructure associated with > the kthread. When something like kt_message is needed (to kill a > thread, for example), they grab the lock and use the static one. > > This means that threads can exit without having to do cleanup.
I agree on one side, there's the drawback on a size increase (3 pointers, plus eventually a spinlock) of the task struct. But IMO the code would be cleaner, since you know who is the target of the message. Also it would not require any cleanup since there would be nothing allocated, just a struct member inside task_struct. Also, what happens in the task woke up by a send does not reschedule before another CPU does another send? Wouldn't a message be lost?
- Davide
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| ![\](/images/icornerr.gif) |