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| author | scottl <scottl@FreeBSD.org> | 2014-01-07 01:32:23 +0000 |
|---|---|---|
| committer | scottl <scottl@FreeBSD.org> | 2014-01-07 01:32:23 +0000 |
| commit | 0a34594b9cd7c8b87f719ed058da6be2b756a8e5 (patch) | |
| tree | 9702de6a6a50f2bb1a6829d66c26686ca7a160cc /sys/cam | |
| parent | 1bce546983c144fd6d05af45e88abd3186b87b1b (diff) | |
| download | FreeBSD-src-0a34594b9cd7c8b87f719ed058da6be2b756a8e5.zip FreeBSD-src-0a34594b9cd7c8b87f719ed058da6be2b756a8e5.tar.gz | |
MFC Alexander Motin's GEOM direct dispatch work:
r256603:
Introduce new function devstat_end_transaction_bio_bt(), adding new argument
to specify present time. Use this function to move binuptime() out of lock,
substantially reducing lock congestion when slow timecounter is used.
r256606:
Move g_io_deliver() out of the lock, as required for direct dispatch.
Move g_destroy_bio() out too to reduce lock scope even more.
r256607:
Fix passing uninitialized bio_resid argument to g_trace().
r256610:
Add unmapped I/O support to GEOM RAID.
r256830:
Restore BIO_UNMAPPED and BIO_TRANSIENT_MAPPING in biodonne() when unmapping
temporary mapped buffer. That fixes double unmap if biodone() called twice
for the same BIO (but with different done methods).
r256880:
Merge GEOM direct dispatch changes from the projects/camlock branch.
When safety requirements are met, it allows to avoid passing I/O requests
to GEOM g_up/g_down thread, executing them directly in the caller context.
That allows to avoid CPU bottlenecks in g_up/g_down threads, plus avoid
several context switches per I/O.
r259247:
Fix bug introduced at r256607. We have to recalculate bp_resid here since
sizes of original and completed requests may differ due to end of media.
Testing of the stable/10 merge was done by Netflix, but all of the credit
goes to Alexander and iX Systems.
Submitted by: mav
Sponsored by: iX Systems
Diffstat (limited to 'sys/cam')
| -rw-r--r-- | sys/cam/ata/ata_da.c | 2 | ||||
| -rw-r--r-- | sys/cam/scsi/scsi_da.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/sys/cam/ata/ata_da.c b/sys/cam/ata/ata_da.c index 062e805..e476a3e 100644 --- a/sys/cam/ata/ata_da.c +++ b/sys/cam/ata/ata_da.c @@ -1254,7 +1254,7 @@ adaregister(struct cam_periph *periph, void *arg) maxio = min(maxio, 256 * softc->params.secsize); softc->disk->d_maxsize = maxio; softc->disk->d_unit = periph->unit_number; - softc->disk->d_flags = 0; + softc->disk->d_flags = DISKFLAG_DIRECT_COMPLETION; if (softc->flags & ADA_FLAG_CAN_FLUSHCACHE) softc->disk->d_flags |= DISKFLAG_CANFLUSHCACHE; if (softc->flags & ADA_FLAG_CAN_TRIM) { diff --git a/sys/cam/scsi/scsi_da.c b/sys/cam/scsi/scsi_da.c index 1ba7382..59a332c 100644 --- a/sys/cam/scsi/scsi_da.c +++ b/sys/cam/scsi/scsi_da.c @@ -2133,7 +2133,7 @@ daregister(struct cam_periph *periph, void *arg) else softc->disk->d_maxsize = cpi.maxio; softc->disk->d_unit = periph->unit_number; - softc->disk->d_flags = 0; + softc->disk->d_flags = DISKFLAG_DIRECT_COMPLETION; if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) softc->disk->d_flags |= DISKFLAG_CANFLUSHCACHE; if ((cpi.hba_misc & PIM_UNMAPPED) != 0) |
