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| author | Alexander Motin <mav@FreeBSD.org> | 2021-08-11 00:05:40 +0000 |
|---|---|---|
| committer | Alexander Motin <mav@FreeBSD.org> | 2021-08-11 00:07:19 +0000 |
| commit | 303477d3253007bb5732deed2daea86b2cbd9aa8 (patch) | |
| tree | 39cf849a5eecba41dafa7991fb0dd11dbd4f19ef /sys/cam/cam_iosched.c | |
| parent | 94feb1f1eb4c3527efdbd0b3f556eb3cb37c3318 (diff) | |
| download | src-303477d3253007bb5732deed2daea86b2cbd9aa8.tar.gz src-303477d3253007bb5732deed2daea86b2cbd9aa8.zip | |
cam(4): Mark all sysctls as CTLFLAG_MPSAFE.
This code does not use Giant lock for very long time.
MFC after: 2 weeks
Diffstat (limited to 'sys/cam/cam_iosched.c')
| -rw-r--r-- | sys/cam/cam_iosched.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/sys/cam/cam_iosched.c b/sys/cam/cam_iosched.c index b293002fb2ca..98ae98bc1d80 100644 --- a/sys/cam/cam_iosched.c +++ b/sys/cam/cam_iosched.c @@ -1009,7 +1009,7 @@ cam_iosched_iop_stats_sysctl_init(struct cam_iosched_softc *isc, struct iop_stat SYSCTL_ADD_PROC(ctx, n, OID_AUTO, "limiter", - CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_NEEDGIANT, + CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, ios, 0, cam_iosched_limiter_sysctl, "A", "Current limiting type."); SYSCTL_ADD_INT(ctx, n, @@ -1027,7 +1027,7 @@ cam_iosched_iop_stats_sysctl_init(struct cam_iosched_softc *isc, struct iop_stat SYSCTL_ADD_PROC(ctx, n, OID_AUTO, "latencies", - CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_NEEDGIANT, + CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, &ios->latencies, 0, cam_iosched_sysctl_latencies, "A", "Array of power of 2 latency from 1ms to 1.024s"); @@ -1057,22 +1057,22 @@ cam_iosched_cl_sysctl_init(struct cam_iosched_softc *isc) SYSCTL_ADD_PROC(ctx, n, OID_AUTO, "type", - CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_NEEDGIANT, + CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, clp, 0, cam_iosched_control_type_sysctl, "A", "Control loop algorithm"); SYSCTL_ADD_PROC(ctx, n, OID_AUTO, "steer_interval", - CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_NEEDGIANT, + CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, &clp->steer_interval, 0, cam_iosched_sbintime_sysctl, "A", "How often to steer (in us)"); SYSCTL_ADD_PROC(ctx, n, OID_AUTO, "lolat", - CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_NEEDGIANT, + CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, &clp->lolat, 0, cam_iosched_sbintime_sysctl, "A", "Low water mark for Latency (in us)"); SYSCTL_ADD_PROC(ctx, n, OID_AUTO, "hilat", - CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_NEEDGIANT, + CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, &clp->hilat, 0, cam_iosched_sbintime_sysctl, "A", "Hi water mark for Latency (in us)"); SYSCTL_ADD_INT(ctx, n, @@ -1200,7 +1200,7 @@ void cam_iosched_sysctl_init(struct cam_iosched_softc *isc, "How biased towards read should we be independent of limits"); SYSCTL_ADD_PROC(ctx, n, - OID_AUTO, "quanta", CTLTYPE_UINT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, + OID_AUTO, "quanta", CTLTYPE_UINT | CTLFLAG_RW | CTLFLAG_MPSAFE, &isc->quanta, 0, cam_iosched_quanta_sysctl, "I", "How many quanta per second do we slice the I/O up into"); |