On Wed, Apr 19, 2017 at 03:04:53PM +0000, Scott Long wrote: > Author: scottl > Date: Wed Apr 19 15:04:52 2017 > New Revision: 317143 > URL: https://svnweb.freebsd.org/changeset/base/317143 > > Log: > Add infrastructure to the ATA and SCSI transports that supports > using a driver-supplied sbuf for printing device discovery > announcements. This helps ensure that messages to the console > will be properly serialized (through sbuf_putbuf) and not be > truncated and interleaved with other messages. The > infrastructure mirrors the existing xpt_announce_periph() > entry point and is opt-in for now. No content or formatting > changes are visible to the operator other than the new coherency. > > While here, eliminate the stack usage of the temporary > announcement buffer in some of the drivers. It's moved to the > softc for now, but future work will eliminate it entirely by > making the code flow more linear. Future work will also address > locking so that the sbufs can be dynamically sized. > > The scsi_da, scs_cd, scsi_ses, and ata_da drivers are converted > at this point, other drivers can be converted at a later date. > A tunable+sysctl, kern.cam.announce_nosbuf, exists for testing > purposes but will be removed later. > > TODO: > Eliminate all of the code duplication and temporary buffers. The > old printf-based methods will be retired, and xpt_announce_periph() > will just be a wrapper that uses a dynamically sized sbuf. This > requires that the register and deregister paths be made malloc-safe, > which they aren't currently.
Thanks! MFC planed? _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
