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FreeBSD: Skip RAW kstat sysctls by default

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These kstats are often expensive to compute so we want to avoid them
unless specifically requested.

The following kstats are affected by this change:

kstat.zfs.${pool}.multihost
kstat.zfs.${pool}.misc.state
kstat.zfs.${pool}.txgs
kstat.zfs.misc.fletcher_4_bench
kstat.zfs.misc.vdev_raidz_bench
kstat.zfs.misc.dbufs
kstat.zfs.misc.dbgmsg

In FreeBSD 13, sysctl(8) has been updated to still list the
names/description/type of skipped sysctls so they are still
discoverable.

Reviewed-by: Allan Jude <allan@klarasystems.com>
Reviewed-by: Mateusz Guzik <mjguzik@gmail.com>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes #11099
This commit is contained in:
Ryan Moeller 2020-10-26 17:34:28 -04:00 committed by GitHub
parent 01a65c5861
commit 5c810ac499
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1 changed files with 4 additions and 4 deletions
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8
module/os/freebsd/spl/spl_kstat.c
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@ -475,14 +475,14 @@ kstat_install(kstat_t *ksp)
if (ksp->ks_raw_ops.data) {
root = SYSCTL_ADD_PROC(&ksp->ks_sysctl_ctx,
SYSCTL_CHILDREN(ksp->ks_sysctl_root),
OID_AUTO, ksp->ks_name,
CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE,
OID_AUTO, ksp->ks_name, CTLTYPE_STRING | CTLFLAG_RD
| CTLFLAG_MPSAFE | CTLFLAG_SKIP,
ksp, 0, kstat_sysctl_raw, "A", ksp->ks_name);
} else {
root = SYSCTL_ADD_PROC(&ksp->ks_sysctl_ctx,
SYSCTL_CHILDREN(ksp->ks_sysctl_root),
OID_AUTO, ksp->ks_name,
CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_MPSAFE,
OID_AUTO, ksp->ks_name, CTLTYPE_OPAQUE | CTLFLAG_RD
| CTLFLAG_MPSAFE | CTLFLAG_SKIP,
ksp, 0, kstat_sysctl_raw, "", ksp->ks_name);
}
break;