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Rename CAM_NETFLIX_IOSCHED to CAM_IOSCHED_DYNAMIC to better reflect

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its nature.

Approved by: re
Reviewed By: jhb
Differential Revision: https://reviews.freebsd.org/D6811
This commit is contained in:
Warner Losh 2016-06-23 23:20:58 +00:00
parent 3185f0f02b
commit df2362478e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=302163
2 changed files with 26 additions and 26 deletions
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50
sys/cam/cam_iosched.c
View File

@ -61,7 +61,7 @@ static MALLOC_DEFINE(M_CAMSCHED, "CAM I/O Scheduler",
* for trims.
*/
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
static int do_netflix_iosched = 1;
TUNABLE_INT("kern.cam.do_netflix_iosched", &do_netflix_iosched);
@ -250,7 +250,7 @@ struct cam_iosched_softc
/* scheduler flags < 16, user flags >= 16 */
uint32_t flags;
int sort_io_queue;
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
int read_bias; /* Read bias setting */
int current_read_bias; /* Current read bias state */
int total_ticks;
@ -269,7 +269,7 @@ struct cam_iosched_softc
#endif
};
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
/*
* helper functions to call the limsw functions.
*/
@ -624,7 +624,7 @@ cam_iosched_cl_maybe_steer(struct control_loop *clp)
/* Periph drivers set these flags to indicate work */
#define CAM_IOSCHED_FLAG_WORK_FLAGS ((0xffffu) << 16)
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
static void
cam_iosched_io_metric_update(struct cam_iosched_softc *isc,
sbintime_t sim_latency, int cmd, size_t size);
@ -639,7 +639,7 @@ cam_iosched_has_flagged_work(struct cam_iosched_softc *isc)
static inline int
cam_iosched_has_io(struct cam_iosched_softc *isc)
{
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
if (do_netflix_iosched) {
struct bio *rbp = bioq_first(&isc->bio_queue);
struct bio *wbp = bioq_first(&isc->write_queue);
@ -672,7 +672,7 @@ cam_iosched_has_more_trim(struct cam_iosched_softc *isc)
static inline int
cam_iosched_has_work(struct cam_iosched_softc *isc)
{
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
if (iosched_debug > 2)
printf("has work: %d %d %d\n", cam_iosched_has_io(isc),
cam_iosched_has_more_trim(isc),
@ -684,7 +684,7 @@ cam_iosched_has_work(struct cam_iosched_softc *isc)
cam_iosched_has_flagged_work(isc);
}
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
static void
cam_iosched_iop_stats_init(struct cam_iosched_softc *isc, struct iop_stats *ios)
{
@ -946,14 +946,14 @@ cam_iosched_init(struct cam_iosched_softc **iscp, struct cam_periph *periph)
*iscp = malloc(sizeof(**iscp), M_CAMSCHED, M_NOWAIT | M_ZERO);
if (*iscp == NULL)
return ENOMEM;
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
if (iosched_debug)
printf("CAM IOSCHEDULER Allocating entry at %p\n", *iscp);
#endif
(*iscp)->sort_io_queue = -1;
bioq_init(&(*iscp)->bio_queue);
bioq_init(&(*iscp)->trim_queue);
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
if (do_netflix_iosched) {
bioq_init(&(*iscp)->write_queue);
(*iscp)->read_bias = 100;
@ -984,7 +984,7 @@ cam_iosched_fini(struct cam_iosched_softc *isc)
{
if (isc) {
cam_iosched_flush(isc, NULL, ENXIO);
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
cam_iosched_iop_stats_fini(&isc->read_stats);
cam_iosched_iop_stats_fini(&isc->write_stats);
cam_iosched_iop_stats_fini(&isc->trim_stats);
@ -1009,7 +1009,7 @@ cam_iosched_fini(struct cam_iosched_softc *isc)
void cam_iosched_sysctl_init(struct cam_iosched_softc *isc,
struct sysctl_ctx_list *ctx, struct sysctl_oid *node)
{
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
struct sysctl_oid_list *n;
#endif
@ -1018,7 +1018,7 @@ void cam_iosched_sysctl_init(struct cam_iosched_softc *isc,
&isc->sort_io_queue, 0,
"Sort IO queue to try and optimise disk access patterns");
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
if (!do_netflix_iosched)
return;
@ -1060,13 +1060,13 @@ cam_iosched_flush(struct cam_iosched_softc *isc, struct devstat *stp, int err)
{
bioq_flush(&isc->bio_queue, stp, err);
bioq_flush(&isc->trim_queue, stp, err);
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
if (do_netflix_iosched)
bioq_flush(&isc->write_queue, stp, err);
#endif
}
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
static struct bio *
cam_iosched_get_write(struct cam_iosched_softc *isc)
{
@ -1132,7 +1132,7 @@ void
cam_iosched_put_back_trim(struct cam_iosched_softc *isc, struct bio *bp)
{
bioq_insert_head(&isc->trim_queue, bp);
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
isc->trim_stats.queued++;
isc->trim_stats.total--; /* since we put it back, don't double count */
isc->trim_stats.pending--;
@ -1155,7 +1155,7 @@ cam_iosched_next_trim(struct cam_iosched_softc *isc)
if (bp == NULL)
return NULL;
bioq_remove(&isc->trim_queue, bp);
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
isc->trim_stats.queued--;
isc->trim_stats.total++;
isc->trim_stats.pending++;
@ -1201,7 +1201,7 @@ cam_iosched_next_bio(struct cam_iosched_softc *isc)
if ((bp = cam_iosched_get_trim(isc)) != NULL)
return bp;
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
/*
* See if we have any pending writes, and room in the queue for them,
* and if so, those are next.
@ -1218,7 +1218,7 @@ cam_iosched_next_bio(struct cam_iosched_softc *isc)
if ((bp = bioq_first(&isc->bio_queue)) == NULL)
return NULL;
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
/*
* For the netflix scheduler, bio_queue is only for reads, so enforce
* the limits here. Enforce only for reads.
@ -1230,7 +1230,7 @@ cam_iosched_next_bio(struct cam_iosched_softc *isc)
}
#endif
bioq_remove(&isc->bio_queue, bp);
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
if (do_netflix_iosched) {
if (bp->bio_cmd == BIO_READ) {
isc->read_stats.queued--;
@ -1262,12 +1262,12 @@ cam_iosched_queue_work(struct cam_iosched_softc *isc, struct bio *bp)
*/
if (bp->bio_cmd == BIO_DELETE) {
bioq_disksort(&isc->trim_queue, bp);
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
isc->trim_stats.in++;
isc->trim_stats.queued++;
#endif
}
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
else if (do_netflix_iosched &&
(bp->bio_cmd == BIO_WRITE || bp->bio_cmd == BIO_FLUSH)) {
if (cam_iosched_sort_queue(isc))
@ -1287,7 +1287,7 @@ cam_iosched_queue_work(struct cam_iosched_softc *isc, struct bio *bp)
bioq_disksort(&isc->bio_queue, bp);
else
bioq_insert_tail(&isc->bio_queue, bp);
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
if (iosched_debug > 9)
printf("Qr : %p %#x\n", bp, bp->bio_cmd);
if (bp->bio_cmd == BIO_READ) {
@ -1331,7 +1331,7 @@ cam_iosched_bio_complete(struct cam_iosched_softc *isc, struct bio *bp,
union ccb *done_ccb)
{
int retval = 0;
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
if (!do_netflix_iosched)
return retval;
@ -1399,7 +1399,7 @@ cam_iosched_clr_work_flags(struct cam_iosched_softc *isc, uint32_t flags)
isc->flags &= ~flags;
}
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
/*
* After the method presented in Jack Crenshaw's 1998 article "Integer
* Suqare Roots," reprinted at
@ -1523,7 +1523,7 @@ cam_iosched_update(struct iop_stats *iop, sbintime_t sim_latency)
iop->sd = (int64_t)var < 0 ? 0 : isqrt64(var);
}
#ifdef CAM_NETFLIX_IOSCHED
#ifdef CAM_IOSCHED_DYNAMIC
static void
cam_iosched_io_metric_update(struct cam_iosched_softc *isc,
sbintime_t sim_latency, int cmd, size_t size)

2
sys/conf/options
View File

@ -330,7 +330,7 @@ CAM_DEBUG_TARGET opt_cam.h
CAM_DEBUG_LUN opt_cam.h
CAM_DEBUG_FLAGS opt_cam.h
CAM_BOOT_DELAY opt_cam.h
CAM_NETFLIX_IOSCHED opt_cam.h
CAM_IOSCHED_DYNAMIC opt_cam.h
SCSI_DELAY opt_scsi.h
SCSI_NO_SENSE_STRINGS opt_scsi.h
SCSI_NO_OP_STRINGS opt_scsi.h