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Differential D12350 Diff 33250 head/sys/cam/cam_iosched.c

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head/sys/cam/cam_iosched.c

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static void static void
cam_iosched_ticker(void *arg) cam_iosched_ticker(void *arg)
{ {
struct cam_iosched_softc *isc = arg; struct cam_iosched_softc *isc = arg;
sbintime_t now, delta; sbintime_t now, delta;
int pending; int pending;
callout_reset(&isc->ticker, hz / isc->quanta - 1, cam_iosched_ticker, isc); callout_reset(&isc->ticker, hz / isc->quanta, cam_iosched_ticker, isc);
now = sbinuptime(); now = sbinuptime();
delta = now - isc->last_time; delta = now - isc->last_time;
isc->this_frac = (uint32_t)delta >> 16; /* Note: discards seconds -- should be 0 harmless if not */ isc->this_frac = (uint32_t)delta >> 16; /* Note: discards seconds -- should be 0 harmless if not */
isc->last_time = now; isc->last_time = now;
cam_iosched_cl_maybe_steer(&isc->cl); cam_iosched_cl_maybe_steer(&isc->cl);
▲ Show 20 Lines • Show All 248 Lines • ▼ Show 20 Lines for (i = none; i < limiter_max; i++) {
ios->limiter = i; ios->limiter = i;
error = cam_iosched_limiter_init(ios); error = cam_iosched_limiter_init(ios);
if (error != 0) { if (error != 0) {
ios->limiter = value; ios->limiter = value;
cam_periph_unlock(isc->periph); cam_periph_unlock(isc->periph);
return error; return error;
} }
/* Note: disk load averate requires ticker to be always running */ /* Note: disk load averate requires ticker to be always running */
callout_reset(&isc->ticker, hz / isc->quanta - 1, cam_iosched_ticker, isc); callout_reset(&isc->ticker, hz / isc->quanta, cam_iosched_ticker, isc);
isc->flags |= CAM_IOSCHED_FLAG_CALLOUT_ACTIVE; isc->flags |= CAM_IOSCHED_FLAG_CALLOUT_ACTIVE;
cam_periph_unlock(isc->periph); cam_periph_unlock(isc->periph);
return 0; return 0;
} }
cam_periph_unlock(isc->periph); cam_periph_unlock(isc->periph);
return EINVAL; return EINVAL;
▲ Show 20 Lines • Show All 240 Lines • ▼ Show 20 Lines if (do_dynamic_iosched) {
cam_iosched_iop_stats_init(*iscp, &(*iscp)->read_stats); cam_iosched_iop_stats_init(*iscp, &(*iscp)->read_stats);
cam_iosched_iop_stats_init(*iscp, &(*iscp)->write_stats); cam_iosched_iop_stats_init(*iscp, &(*iscp)->write_stats);
cam_iosched_iop_stats_init(*iscp, &(*iscp)->trim_stats); cam_iosched_iop_stats_init(*iscp, &(*iscp)->trim_stats);
(*iscp)->trim_stats.max = 1; /* Trims are special: one at a time for now */ (*iscp)->trim_stats.max = 1; /* Trims are special: one at a time for now */
(*iscp)->last_time = sbinuptime(); (*iscp)->last_time = sbinuptime();
callout_init_mtx(&(*iscp)->ticker, cam_periph_mtx(periph), 0); callout_init_mtx(&(*iscp)->ticker, cam_periph_mtx(periph), 0);
(*iscp)->periph = periph; (*iscp)->periph = periph;
cam_iosched_cl_init(&(*iscp)->cl, *iscp); cam_iosched_cl_init(&(*iscp)->cl, *iscp);
callout_reset(&(*iscp)->ticker, hz / (*iscp)->quanta - 1, cam_iosched_ticker, *iscp); callout_reset(&(*iscp)->ticker, hz / (*iscp)->quanta, cam_iosched_ticker, *iscp);
(*iscp)->flags |= CAM_IOSCHED_FLAG_CALLOUT_ACTIVE; (*iscp)->flags |= CAM_IOSCHED_FLAG_CALLOUT_ACTIVE;
} }
#endif #endif
return 0; return 0;
} }
/* /*
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