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/*********************************************************
* Copyright (C) 2005 VMware, Inc. All rights reserved.
*
* The contents of this file are subject to the terms of the Common
* Development and Distribution License (the "License") version 1.0
* and no later version. You may not use this file except in
* compliance with the License.
*
* You can obtain a copy of the License at
* http://www.opensource.org/licenses/cddl1.php
*
* See the License for the specific language governing permissions
* and limitations under the License.
*
*********************************************************/
/*
* vmballoon_kstats.c --
*
* Functions reporting status for vmballoon driver in the form of
* kstats.
*/
/*
* Compile-Time Options
*/
#include <sys/types.h>
#include <sys/kstat.h>
#include <sys/errno.h>
#include "os.h"
#include "vmballoon.h"
#include "vmballoon_kstats.h"
/*
* Information to be reported to user level through kstats. This
* table should be kept in sync with the corresponding info reported
* through procfs by the linux driver. To display this information
* on a Solaris system with the driver loaded, run "kstat -m vmmemctl".
*/
typedef struct {
kstat_named_t nPagesTarget;
kstat_named_t nPages;
kstat_named_t rateAlloc;
kstat_named_t rateFree;
kstat_named_t timer;
kstat_named_t start;
kstat_named_t startFail;
kstat_named_t guestType;
kstat_named_t guestTypeFail;
kstat_named_t lock;
kstat_named_t lockFail;
kstat_named_t unlock;
kstat_named_t unlockFail;
kstat_named_t target;
kstat_named_t targetFail;
kstat_named_t primAlloc[BALLOON_PAGE_ALLOC_TYPES_NR];
kstat_named_t primAllocFail[BALLOON_PAGE_ALLOC_TYPES_NR];
kstat_named_t primFree;
kstat_named_t primErrorPageAlloc;
kstat_named_t primErrorPageFree;
} BalloonKstats;
/*
*----------------------------------------------------------------------
*
* BalloonKstatUpdate --
*
* Ballon driver status reporting routine.
*
* Results:
* Copies current driver status and statistics into kstat structure
* for reporting to user level.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
BalloonKstatUpdate(kstat_t *ksp, int rw)
{
int i;
const BalloonStats *stats;
BalloonKstats *bkp = ksp->ks_data;
if (rw == KSTAT_WRITE)
return (EACCES);
stats = Balloon_GetStats();
/* size info */
bkp->nPagesTarget.value.ui32 = stats->nPagesTarget;
bkp->nPages.value.ui32 = stats->nPages;
/* rate info */
bkp->rateAlloc.value.ui32 = stats->rateAlloc;
bkp->rateFree.value.ui32 = stats->rateFree;
/* statistics */
bkp->timer.value.ui32 = stats->timer;
bkp->start.value.ui32 = stats->start;
bkp->startFail.value.ui32 = stats->startFail;
bkp->guestType.value.ui32 = stats->guestType;
bkp->guestTypeFail.value.ui32 = stats->guestTypeFail;
bkp->lock.value.ui32 = stats->lock;
bkp->lockFail.value.ui32 = stats->lockFail;
bkp->unlock.value.ui32 = stats->unlock;
bkp->unlockFail.value.ui32 = stats->unlockFail;
bkp->target.value.ui32 = stats->target;
bkp->targetFail.value.ui32 = stats->targetFail;
for (i = 0; i < BALLOON_PAGE_ALLOC_TYPES_NR; i++) {
bkp->primAlloc[i].value.ui32 = stats->primAlloc[i];
bkp->primAllocFail[i].value.ui32 = stats->primAllocFail[i];
}
bkp->primFree.value.ui32 = stats->primFree;
bkp->primErrorPageAlloc.value.ui32 = stats->primErrorPageAlloc;
bkp->primErrorPageFree.value.ui32 = stats->primErrorPageFree;
return 0;
}
/*
* Set up statistics for the balloon driver. Creates and initializes
* the kstats structure.
*/
kstat_t *
BalloonKstatCreate(void)
{
kstat_t *ksp;
BalloonKstats *bkp;
ksp = kstat_create("vmmemctl", 0, "vmmemctl", "vm", KSTAT_TYPE_NAMED,
sizeof (BalloonKstats) / sizeof (kstat_named_t), 0);
if (ksp == NULL)
return (NULL); /* can't allocate space, give up (no kstats) */
bkp = ksp->ks_data;
kstat_named_init(&bkp->nPagesTarget, "targetPages", KSTAT_DATA_UINT32);
kstat_named_init(&bkp->nPages, "currentPages", KSTAT_DATA_UINT32);
kstat_named_init(&bkp->rateAlloc, "rateAlloc", KSTAT_DATA_UINT32);
kstat_named_init(&bkp->rateFree, "rateFree", KSTAT_DATA_UINT32);
kstat_named_init(&bkp->timer, "timer", KSTAT_DATA_UINT32);
kstat_named_init(&bkp->start, "start", KSTAT_DATA_UINT32);
kstat_named_init(&bkp->startFail, "startFail", KSTAT_DATA_UINT32);
kstat_named_init(&bkp->guestType, "guestType", KSTAT_DATA_UINT32);
kstat_named_init(&bkp->guestTypeFail, "guestTypeFail", KSTAT_DATA_UINT32);
kstat_named_init(&bkp->lock, "lock", KSTAT_DATA_UINT32);
kstat_named_init(&bkp->lockFail, "lockFail", KSTAT_DATA_UINT32);
kstat_named_init(&bkp->unlock, "unlock", KSTAT_DATA_UINT32);
kstat_named_init(&bkp->unlockFail, "unlockFail", KSTAT_DATA_UINT32);
kstat_named_init(&bkp->target, "target", KSTAT_DATA_UINT32);
kstat_named_init(&bkp->targetFail, "targetFail", KSTAT_DATA_UINT32);
kstat_named_init(&bkp->primAlloc[BALLOON_PAGE_ALLOC_NOSLEEP],
"primAllocNoSleep", KSTAT_DATA_UINT32);
kstat_named_init(&bkp->primAlloc[BALLOON_PAGE_ALLOC_CANSLEEP],
"primAllocCanSleep", KSTAT_DATA_UINT32);
kstat_named_init(&bkp->primAllocFail[BALLOON_PAGE_ALLOC_NOSLEEP],
"primAllocNoSleepFail", KSTAT_DATA_UINT32);
kstat_named_init(&bkp->primAllocFail[BALLOON_PAGE_ALLOC_CANSLEEP],
"primAllocCanSleepFail", KSTAT_DATA_UINT32);
kstat_named_init(&bkp->primFree, "primFree", KSTAT_DATA_UINT32);
kstat_named_init(&bkp->primErrorPageAlloc, "errAlloc", KSTAT_DATA_UINT32);
kstat_named_init(&bkp->primErrorPageFree, "errFree", KSTAT_DATA_UINT32);
/* set update function to be run when kstats are read */
ksp->ks_update = BalloonKstatUpdate;
kstat_install(ksp);
return ksp;
}
void BalloonKstatDelete(kstat_t *ksp)
{
if (ksp != NULL)
kstat_delete(ksp);
}
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