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Refactor common OpenZFS sysctl access

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Darwin and FreeBSD export zfs kstats through the
same APIs, so moving functions into a common file.
This commit is contained in:
Ross Williams
2019-07-07 23:27:00 +00:00
parent fc8e9a2d3e
commit a88d2e313d
15 changed files with 215 additions and 223 deletions
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19
zfs/ZfsArcStats.c Normal file
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/*
htop - ZfsArcStats.c
(C) 2014 Hisham H. Muhammad
Released under the GNU GPL, see the COPYING file
in the source distribution for its full text.
*/
/*{
typedef struct ZfsArcStats_ {
int enabled;
unsigned long long int max;
unsigned long long int size;
unsigned long long int MFU;
unsigned long long int MRU;
unsigned long long int anon;
unsigned long long int header;
unsigned long long int other;
} ZfsArcStats;
}*/

23
zfs/ZfsArcStats.h Normal file
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/* Do not edit this file. It was automatically generated. */
#ifndef HEADER_ZfsArcStats
#define HEADER_ZfsArcStats
/*
htop - ZfsArcStats.h
(C) 2014 Hisham H. Muhammad
Released under the GNU GPL, see the COPYING file
in the source distribution for its full text.
*/
typedef struct ZfsArcStats_ {
int enabled;
unsigned long long int max;
unsigned long long int size;
unsigned long long int MFU;
unsigned long long int MRU;
unsigned long long int anon;
unsigned long long int header;
unsigned long long int other;
} ZfsArcStats;
#endif

81
zfs/openzfs_sysctl.c Normal file
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/*
htop - zfs/openzfs_sysctl.c
(C) 2014 Hisham H. Muhammad
Released under the GNU GPL, see the COPYING file
in the source distribution for its full text.
*/
#include "zfs/openzfs_sysctl.h"
#include "zfs/ZfsArcStats.h"
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/sysctl.h>
static int MIB_kstat_zfs_misc_arcstats_size[5];
static int MIB_kstat_zfs_misc_arcstats_c_max[5];
static int MIB_kstat_zfs_misc_arcstats_mfu_size[5];
static int MIB_kstat_zfs_misc_arcstats_mru_size[5];
static int MIB_kstat_zfs_misc_arcstats_anon_size[5];
static int MIB_kstat_zfs_misc_arcstats_hdr_size[5];
static int MIB_kstat_zfs_misc_arcstats_other_size[5];
/*{
#include "zfs/ZfsArcStats.h"
}*/
int openzfs_sysctl_init() {
size_t len;
unsigned long long int arcSize;
len = sizeof(arcSize);
if (sysctlbyname("kstat.zfs.misc.arcstats.size", &arcSize, &len,
NULL, 0) == 0 && arcSize != 0) {
len = 5; sysctlnametomib("kstat.zfs.misc.arcstats.size", MIB_kstat_zfs_misc_arcstats_size, &len);
sysctlnametomib("kstat.zfs.misc.arcstats.c_max", MIB_kstat_zfs_misc_arcstats_c_max, &len);
sysctlnametomib("kstat.zfs.misc.arcstats.mfu_size", MIB_kstat_zfs_misc_arcstats_mfu_size, &len);
sysctlnametomib("kstat.zfs.misc.arcstats.mru_size", MIB_kstat_zfs_misc_arcstats_mru_size, &len);
sysctlnametomib("kstat.zfs.misc.arcstats.anon_size", MIB_kstat_zfs_misc_arcstats_anon_size, &len);
sysctlnametomib("kstat.zfs.misc.arcstats.hdr_size", MIB_kstat_zfs_misc_arcstats_hdr_size, &len);
sysctlnametomib("kstat.zfs.misc.arcstats.other_size", MIB_kstat_zfs_misc_arcstats_other_size, &len);
return 1;
} else {
return 0;
}
}
void openzfs_sysctl_updateArcStats(ZfsArcStats *stats) {
size_t len;
if (stats->enabled) {
len = sizeof(stats->size);
sysctl(MIB_kstat_zfs_misc_arcstats_size, 5, &(stats->size), &len , NULL, 0);
stats->size /= 1024;
len = sizeof(stats->max);
sysctl(MIB_kstat_zfs_misc_arcstats_c_max, 5, &(stats->max), &len , NULL, 0);
stats->max /= 1024;
len = sizeof(stats->MFU);
sysctl(MIB_kstat_zfs_misc_arcstats_mfu_size, 5, &(stats->MFU), &len , NULL, 0);
stats->MFU /= 1024;
len = sizeof(stats->MRU);
sysctl(MIB_kstat_zfs_misc_arcstats_mru_size, 5, &(stats->MRU), &len , NULL, 0);
stats->MRU /= 1024;
len = sizeof(stats->anon);
sysctl(MIB_kstat_zfs_misc_arcstats_anon_size, 5, &(stats->anon), &len , NULL, 0);
stats->anon /= 1024;
len = sizeof(stats->header);
sysctl(MIB_kstat_zfs_misc_arcstats_hdr_size, 5, &(stats->header), &len , NULL, 0);
stats->header /= 1024;
len = sizeof(stats->other);
sysctl(MIB_kstat_zfs_misc_arcstats_other_size, 5, &(stats->other), &len , NULL, 0);
stats->other /= 1024;
}
}

18
zfs/openzfs_sysctl.h Normal file
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/* Do not edit this file. It was automatically generated. */
#ifndef HEADER_openzfs
#define HEADER_openzfs
/*
htop - zfs/openzfs_sysctl.h
(C) 2014 Hisham H. Muhammad
Released under the GNU GPL, see the COPYING file
in the source distribution for its full text.
*/
#include "zfs/ZfsArcStats.h"
int openzfs_sysctl_init();
void openzfs_sysctl_updateArcStats(ZfsArcStats *stats);
#endif