Subject: re: lwp id in ktrace
To: matthew green <firstname.lastname@example.org>
From: Christos Zoulas <email@example.com>
Date: 12/01/2003 16:34:50
On Dec 2, 8:28am, firstname.lastname@example.org (matthew green) wrote:
-- Subject: re: lwp id in ktrace
| I think the best way to do this is to have ktrace request a newer version
| of the file format. That's the only way you can know what version of the
| file format userland can deal with. So it sounds like it's time to version
| the ktrace syscall. :-|
| Oh, I am assuming that kdump will be in sync with ktrace. Since userland
| gets updated all-at-once, that assumption seems fine. This way ktrace will
| never ask for a file format its kdump can't understand.
| it was my understanding that ktrace doesn't actually write the records
| to disk, but the kernel does directly. one would assume that ktrace/kdump
| would be in sync, yet, but i didn't think that helped...
Yes, he means that the ktrace syscall can set a flag telling the kernel
`give me the new file format'.