diff options
Diffstat (limited to 'sys/cddl/compat/opensolaris/kern/opensolaris_kstat.c')
| -rw-r--r-- | sys/cddl/compat/opensolaris/kern/opensolaris_kstat.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/sys/cddl/compat/opensolaris/kern/opensolaris_kstat.c b/sys/cddl/compat/opensolaris/kern/opensolaris_kstat.c new file mode 100644 index 0000000..673de14 --- /dev/null +++ b/sys/cddl/compat/opensolaris/kern/opensolaris_kstat.c @@ -0,0 +1,131 @@ +/*- + * Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/kernel.h> +#include <sys/systm.h> +#include <sys/malloc.h> +#include <sys/sysctl.h> +#include <sys/kstat.h> + +static MALLOC_DEFINE(M_KSTAT, "kstat_data", "Kernel statistics"); + +SYSCTL_NODE(, OID_AUTO, kstat, CTLFLAG_RW, 0, "Kernel statistics"); + +kstat_t * +kstat_create(char *module, int instance, char *name, char *class, uchar_t type, + ulong_t ndata, uchar_t flags) +{ + struct sysctl_oid *root; + kstat_t *ksp; + + KASSERT(instance == 0, ("instance=%d", instance)); + KASSERT(type == KSTAT_TYPE_NAMED, ("type=%hhu", type)); + KASSERT(flags == KSTAT_FLAG_VIRTUAL, ("flags=%02hhx", flags)); + + /* + * Allocate the main structure. We don't need to copy module/class/name + * stuff in here, because it is only used for sysctl node creation + * done in this function. + */ + ksp = malloc(sizeof(*ksp), M_KSTAT, M_WAITOK); + ksp->ks_ndata = ndata; + + /* + * Create sysctl tree for those statistics: + * + * kstat.<module>.<class>.<name>. + */ + sysctl_ctx_init(&ksp->ks_sysctl_ctx); + root = SYSCTL_ADD_NODE(&ksp->ks_sysctl_ctx, + SYSCTL_STATIC_CHILDREN(_kstat), OID_AUTO, module, CTLFLAG_RW, 0, + ""); + if (root == NULL) { + printf("%s: Cannot create kstat.%s tree!\n", __func__, module); + sysctl_ctx_free(&ksp->ks_sysctl_ctx); + free(ksp, M_KSTAT); + return (NULL); + } + root = SYSCTL_ADD_NODE(&ksp->ks_sysctl_ctx, SYSCTL_CHILDREN(root), + OID_AUTO, class, CTLFLAG_RW, 0, ""); + if (root == NULL) { + printf("%s: Cannot create kstat.%s.%s tree!\n", __func__, + module, class); + sysctl_ctx_free(&ksp->ks_sysctl_ctx); + free(ksp, M_KSTAT); + return (NULL); + } + root = SYSCTL_ADD_NODE(&ksp->ks_sysctl_ctx, SYSCTL_CHILDREN(root), + OID_AUTO, name, CTLFLAG_RW, 0, ""); + if (root == NULL) { + printf("%s: Cannot create kstat.%s.%s.%s tree!\n", __func__, + module, class, name); + sysctl_ctx_free(&ksp->ks_sysctl_ctx); + free(ksp, M_KSTAT); + return (NULL); + } + ksp->ks_sysctl_root = root; + + return (ksp); +} + +static int +kstat_sysctl(SYSCTL_HANDLER_ARGS) +{ + kstat_named_t *ksent = arg1; + uint64_t val; + + val = ksent->value.ui64; + return sysctl_handle_int(oidp, &val, sizeof(val), req); +} + +void +kstat_install(kstat_t *ksp) +{ + kstat_named_t *ksent; + u_int i; + + ksent = ksp->ks_data; + for (i = 0; i < ksp->ks_ndata; i++, ksent++) { + KASSERT(ksent->data_type == KSTAT_DATA_UINT64, + ("data_type=%d", ksent->data_type)); + SYSCTL_ADD_PROC(&ksp->ks_sysctl_ctx, + SYSCTL_CHILDREN(ksp->ks_sysctl_root), OID_AUTO, ksent->name, + CTLTYPE_QUAD | CTLFLAG_RD, ksent, sizeof(*ksent), + kstat_sysctl, "IU", ""); + } +} + +void +kstat_delete(kstat_t *ksp) +{ + + sysctl_ctx_free(&ksp->ks_sysctl_ctx); + free(ksp, M_KSTAT); +} |
