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* include/libvirt/libvirt.h include/libvirt/libvirt.h.in

Browse Source 
src/driver.h src/libvirt.c src/libvirt_sym.version
  src/proxy_internal.c src/qemu_internal.c src/test.c
  src/virsh.c src/xen_internal.c src/xen_internal.h src/xen_unified.c
  src/xend_internal.c src/xm_internal.c src/xs_internal.c:
  Applied patches from Atsushi SAKAI to add the scheduler API,
  with patch from Rich Jones for error handing, and a number
  of cleanups and more error checking from me
Daniel
This commit is contained in:
Daniel Veillard 2007-06-05 12:06:08 +00:00
parent c6e2ef60df
commit 652f3bb13b
16 changed files with 869 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
ChangeLog
View File

@ -1,3 +1,14 @@
Tue Jun 5 14:03:38 CEST 2007 Daniel Veillard <veillard@redhat.com>
* include/libvirt/libvirt.h include/libvirt/libvirt.h.in
src/driver.h src/libvirt.c src/libvirt_sym.version
src/proxy_internal.c src/qemu_internal.c src/test.c
src/virsh.c src/xen_internal.c src/xen_internal.h src/xen_unified.c
src/xend_internal.c src/xm_internal.c src/xs_internal.c:
Applied patches from Atsushi SAKAI to add the scheduler API,
with patch from Rich Jones for error handing, and a number
of cleanups and more error checking from me
Mon Jun 4 10:41:25 CEST 2007 Daniel Veillard <veillard@redhat.com>
* src/xml.c: apply patch from Masayuki Sunou about an uninitialized

71
include/libvirt/libvirt.h
View File

@ -168,6 +168,71 @@ struct _virNodeInfo {
};
/**
* virDomainSchedParameterType:
*
* A scheduler parameter field type
*/
typedef enum {
VIR_DOMAIN_SCHED_FIELD_INT = 1, /* integer case */
VIR_DOMAIN_SCHED_FIELD_UINT = 2, /* unsigned integer case */
VIR_DOMAIN_SCHED_FIELD_LLONG = 3, /* long long case */
VIR_DOMAIN_SCHED_FIELD_ULLONG = 4, /* unsigned long long case */
VIR_DOMAIN_SCHED_FIELD_DOUBLE = 5, /* double case */
VIR_DOMAIN_SCHED_FIELD_BOOLEAN = 6 /* boolean(character) case */
} virSchedParameterType;
/**
* VIR_DOMAIN_SCHED_FIELD_LENGTH:
*
* Macro providing the field length of virSchedParameter
*/
#define VIR_DOMAIN_SCHED_FIELD_LENGTH 80
/**
* virDomainSchedParameter:
*
* a virDomainSchedParameter is the set of scheduler parameters
*/
typedef struct _virSchedParameter virSchedParameter;
struct _virSchedParameter {
char field[VIR_DOMAIN_SCHED_FIELD_LENGTH]; /* parameter name */
int type; /* parameter type */
union {
int i; /* data for integer case */
unsigned int ui; /* data for unsigned integer case */
long long int l; /* data for long long integer case */
unsigned long long int ul; /* data for unsigned long long integer case */
double d; /* data for double case */
char b; /* data for char case */
} value; /* parameter value */
};
/**
* virSchedParameterPtr:
*
* a virSchedParameterPtr is a pointer to a virSchedParameter structure.
*/
typedef virSchedParameter *virSchedParameterPtr;
/*
* Fetch scheduler parameters, caller allocates 'params' field of size 'nparams'
*/
int virDomainGetSchedulerParameters (virDomainPtr domain,
virSchedParameterPtr params,
int *nparams);
/*
* Change scheduler parameters
*/
int virDomainSetSchedulerParameters (virDomainPtr domain,
virSchedParameterPtr params,
int nparams);
/**
* VIR_NODEINFO_MAXCPUS:
* @nodeinfo: virNodeInfo instance
@ -302,6 +367,12 @@ int virDomainCoreDump (virDomainPtr domain,
int virDomainGetInfo (virDomainPtr domain,
virDomainInfoPtr info);
/*
* Return scheduler type in effect 'sedf', 'credit', 'linux'
*/
char * virDomainGetSchedulerType(virDomainPtr domain,
int *nparams);
/*
* Dynamic control of domains
*/

71
include/libvirt/libvirt.h.in
View File

@ -168,6 +168,71 @@ struct _virNodeInfo {
};
/**
* virDomainSchedParameterType:
*
* A scheduler parameter field type
*/
typedef enum {
VIR_DOMAIN_SCHED_FIELD_INT = 1, /* integer case */
VIR_DOMAIN_SCHED_FIELD_UINT = 2, /* unsigned integer case */
VIR_DOMAIN_SCHED_FIELD_LLONG = 3, /* long long case */
VIR_DOMAIN_SCHED_FIELD_ULLONG = 4, /* unsigned long long case */
VIR_DOMAIN_SCHED_FIELD_DOUBLE = 5, /* double case */
VIR_DOMAIN_SCHED_FIELD_BOOLEAN = 6 /* boolean(character) case */
} virSchedParameterType;
/**
* VIR_DOMAIN_SCHED_FIELD_LENGTH:
*
* Macro providing the field length of virSchedParameter
*/
#define VIR_DOMAIN_SCHED_FIELD_LENGTH 80
/**
* virDomainSchedParameter:
*
* a virDomainSchedParameter is the set of scheduler parameters
*/
typedef struct _virSchedParameter virSchedParameter;
struct _virSchedParameter {
char field[VIR_DOMAIN_SCHED_FIELD_LENGTH]; /* parameter name */
int type; /* parameter type */
union {
int i; /* data for integer case */
unsigned int ui; /* data for unsigned integer case */
long long int l; /* data for long long integer case */
unsigned long long int ul; /* data for unsigned long long integer case */
double d; /* data for double case */
char b; /* data for char case */
} value; /* parameter value */
};
/**
* virSchedParameterPtr:
*
* a virSchedParameterPtr is a pointer to a virSchedParameter structure.
*/
typedef virSchedParameter *virSchedParameterPtr;
/*
* Fetch scheduler parameters, caller allocates 'params' field of size 'nparams'
*/
int virDomainGetSchedulerParameters (virDomainPtr domain,
virSchedParameterPtr params,
int *nparams);
/*
* Change scheduler parameters
*/
int virDomainSetSchedulerParameters (virDomainPtr domain,
virSchedParameterPtr params,
int nparams);
/**
* VIR_NODEINFO_MAXCPUS:
* @nodeinfo: virNodeInfo instance
@ -302,6 +367,12 @@ int virDomainCoreDump (virDomainPtr domain,
int virDomainGetInfo (virDomainPtr domain,
virDomainInfoPtr info);
/*
* Return scheduler type in effect 'sedf', 'credit', 'linux'
*/
char * virDomainGetSchedulerType(virDomainPtr domain,
int *nparams);
/*
* Dynamic control of domains
*/

28
src/driver.h
View File

@ -54,7 +54,8 @@ typedef int
(*virDrvGetVersion) (virConnectPtr conn,
unsigned long *hvVer);
typedef int
(*virDrvGetMaxVcpus) (virConnectPtr conn, const char *type);
(*virDrvGetMaxVcpus) (virConnectPtr conn,
const char *type);
typedef int
(*virDrvNodeGetInfo) (virConnectPtr conn,
virNodeInfoPtr info);
@ -125,7 +126,8 @@ typedef int
typedef int
(*virDrvDomainCreate) (virDomainPtr dom);
typedef virDomainPtr
(*virDrvDomainDefineXML)(virConnectPtr conn, const char *xml);
(*virDrvDomainDefineXML) (virConnectPtr conn,
const char *xml);
typedef int
(*virDrvDomainUndefine) (virDomainPtr dom);
typedef int
@ -157,6 +159,22 @@ typedef int
(*virDrvDomainSetAutostart) (virDomainPtr domain,
int autostart);
typedef char *
(*virDrvDomainGetSchedulerType) (virDomainPtr domain,
int *nparams);
typedef int
(*virDrvDomainGetSchedulerParameters)
(virDomainPtr domain,
virSchedParameterPtr params,
int *nparams);
typedef int
(*virDrvDomainSetSchedulerParameters)
(virDomainPtr domain,
virSchedParameterPtr params,
int nparams);
typedef struct _virDriver virDriver;
typedef virDriver *virDriverPtr;
@ -216,6 +234,9 @@ struct _virDriver {
virDrvDomainDetachDevice domainDetachDevice;
virDrvDomainGetAutostart domainGetAutostart;
virDrvDomainSetAutostart domainSetAutostart;
virDrvDomainGetSchedulerType domainGetSchedulerType;
virDrvDomainGetSchedulerParameters domainGetSchedulerParameters;
virDrvDomainSetSchedulerParameters domainSetSchedulerParameters;
};
typedef int
@ -240,7 +261,8 @@ typedef virNetworkPtr
(*virDrvNetworkCreateXML) (virConnectPtr conn,
const char *xmlDesc);
typedef virNetworkPtr
(*virDrvNetworkDefineXML) (virConnectPtr conn, const char *xml);
(*virDrvNetworkDefineXML) (virConnectPtr conn,
const char *xml);
typedef int
(*virDrvNetworkUndefine) (virNetworkPtr network);
typedef int

112
src/libvirt.c
View File

@ -1427,6 +1427,118 @@ virConnectGetCapabilities (virConnectPtr conn)
return NULL;
}
/**
* virDomainGetSchedulerType:
* @domain: pointer to domain object
* @nparams: number of scheduler parameters(return value)
*
* Get the scheduler type.
*
* Returns NULL in case of error. The caller must free the returned string.
*/
char *
virDomainGetSchedulerType(virDomainPtr domain, int *nparams)
{
virConnectPtr conn;
char *schedtype;
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(domain, VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
return NULL;
}
conn = domain->conn;
if (!VIR_IS_CONNECT (conn)) {
virLibConnError (conn, VIR_ERR_INVALID_CONN, __FUNCTION__);
return NULL;
}
if (conn->driver->domainGetSchedulerType){
schedtype = conn->driver->domainGetSchedulerType (domain, nparams);
return schedtype;
}
virLibConnError (conn, VIR_ERR_CALL_FAILED, __FUNCTION__);
return NULL;
}
/**
* virDomainGetSchedulerParameters:
* @domain: pointer to domain object
* @params: pointer to scheduler parameter object
* (return value)
* @nparams: pointer to number of scheduler parameter
* (this value should be same than the returned value
* nparams of virDomainGetSchedulerType)
*
* Get the scheduler parameters, the @params array will be filled with the
* values.
*
* Returns -1 in case of error, 0 in case of success.
*/
int
virDomainGetSchedulerParameters(virDomainPtr domain,
virSchedParameterPtr params, int *nparams)
{
virConnectPtr conn;
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(domain, VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
return -1;
}
conn = domain->conn;
if (!VIR_IS_CONNECT (conn)) {
virLibConnError (conn, VIR_ERR_INVALID_CONN, __FUNCTION__);
return -1;
}
if (conn->driver->domainGetSchedulerParameters)
return conn->driver->domainGetSchedulerParameters (domain, params, nparams);
virLibConnError (conn, VIR_ERR_CALL_FAILED, __FUNCTION__);
return -1;
}
/**
* virDomainSetSchedulerParameters:
* @domain: pointer to domain object
* @params: pointer to scheduler parameter objects
* @nparams: number of scheduler parameter
* (this value should be same or less than the returned value
* nparams of virDomainGetSchedulerType)
*
* Change the scheduler parameters
*
* Returns -1 in case of error, 0 in case of success.
*/
int
virDomainSetSchedulerParameters(virDomainPtr domain,
virSchedParameterPtr params, int nparams)
{
virConnectPtr conn;
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(domain, VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
return -1;
}
conn = domain->conn;
if (!VIR_IS_CONNECT (conn)) {
virLibConnError (conn, VIR_ERR_INVALID_CONN, __FUNCTION__);
return -1;
}
if (conn->driver->domainSetSchedulerParameters)
return conn->driver->domainSetSchedulerParameters (domain, params, nparams);
virLibConnError (conn, VIR_ERR_CALL_FAILED, __FUNCTION__);
return -1;
}
/************************************************************************
* *
* Handling of defined but not running domains *

3
src/libvirt_sym.version
View File

@ -59,6 +59,9 @@
virDomainPinVcpu;
virDomainGetVcpus;
virDomainGetMaxVcpus;
virDomainGetSchedulerType;
virDomainGetSchedulerParameters;
virDomainSetSchedulerParameters;
virDomainAttachDevice;
virDomainDetachDevice;

3
src/proxy_internal.c
View File

@ -88,6 +88,9 @@ virDriver xenProxyDriver = {
NULL, /* domainDetachDevice */
NULL, /* domainGetAutostart */
NULL, /* domainSetAutostart */
NULL, /* domainGetSchedulerType */
NULL, /* domainGetSchedulerParameters */
NULL, /* domainSetSchedulerParameters */
};
/**

3
src/qemu_internal.c
View File

@ -1350,6 +1350,9 @@ static virDriver qemuDriver = {
NULL, /* domainDetachDevice */
qemuDomainGetAutostart, /* domainGetAutostart */
qemuDomainSetAutostart, /* domainSetAutostart */
NULL, /* domainGetSchedulerType */
NULL, /* domainGetSchedulerParameters */
NULL, /* domainSetSchedulerParameters */
};
static virNetworkDriver qemuNetworkDriver = {

3
src/test.c
View File

@ -132,6 +132,9 @@ static virDriver testDriver = {
NULL, /* domainDetachDevice */
NULL, /* domainGetAutostart */
NULL, /* domainSetAutostart */
NULL, /* domainGetSchedulerType */
NULL, /* domainGetSchedulerParameters */
NULL, /* domainSetSchedulerParameters */
};
/* Per-connection private data. */

125
src/virsh.c
View File

@ -29,6 +29,7 @@
#include <ctype.h>
#include <fcntl.h>
#include <locale.h>
#include <assert.h>
#include <libxml/parser.h>
#include <libxml/tree.h>
@ -939,6 +940,129 @@ cmdSave(vshControl * ctl, vshCmd * cmd)
return ret;
}
/*
* "schedinfo" command
*/
static vshCmdInfo info_schedinfo[] = {
{"syntax", "sched <domain>"},
{"help", gettext_noop("show/set scheduler parameters")},
{"desc", gettext_noop("Show/Set scheduler parameters.")},
{NULL, NULL}
};
static vshCmdOptDef opts_schedinfo[] = {
{"domain", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("domain name, id or uuid")},
{"weight", VSH_OT_INT, VSH_OFLAG_NONE, gettext_noop("weight for XEN_CREDIT")},
{"cap", VSH_OT_INT, VSH_OFLAG_NONE, gettext_noop("cap for XEN_CREDIT")},
{NULL, 0, 0, NULL}
};
static int
cmdSchedinfo(vshControl * ctl, vshCmd * cmd)
{
char *schedulertype;
virDomainPtr dom;
virSchedParameterPtr params;
int i, ret;
int nparams = 0;
int nr_inputparams = 0;
int inputparams = 0;
int weightfound = 0;
int weight;
int capfound = 0;
int cap;
char str_weight[] = "weight";
char str_cap[] = "cap";
if (!vshConnectionUsability(ctl, ctl->conn, TRUE))
return FALSE;
if (!(dom = vshCommandOptDomain(ctl, cmd, "domain", NULL)))
return FALSE;
/* Currently supports Xen Credit only */
weight = vshCommandOptInt(cmd, "weight", &weightfound);
if (weightfound) nr_inputparams++;
cap = vshCommandOptInt(cmd, "cap", &capfound);
if (capfound) nr_inputparams++;
params = vshMalloc(ctl, sizeof (virSchedParameter) * nr_inputparams);
if (params == NULL) return FALSE;
if (weightfound) {
strncpy(params[inputparams].field,str_weight,sizeof(str_weight));
params[inputparams].type = VIR_DOMAIN_SCHED_FIELD_UINT;
params[inputparams].value.ui = weight;
inputparams++;
}
if (capfound) {
strncpy(params[inputparams].field,str_cap,sizeof(str_cap));
params[inputparams].type = VIR_DOMAIN_SCHED_FIELD_UINT;
params[inputparams].value.ui = cap;
inputparams++;
}
/* End Currently supports Xen Credit only */
assert (inputparams == nr_inputparams);
/* Set SchedulerParameters */
if (inputparams > 0) {
ret = virDomainSetSchedulerParameters(dom, params, inputparams);
if (ret == -1) return FALSE;
}
free(params);
/* Print SchedulerType */
schedulertype = virDomainGetSchedulerType(dom, &nparams);
if (schedulertype!= NULL){
vshPrint(ctl, "%-15s %s\n", _("Scheduler:"),
schedulertype);
free(schedulertype);
} else {
vshPrint(ctl, "%-15s %s\n", _("Scheduler:"), _("Unknown"));
return FALSE;
}
/* Get SchedulerParameters */
params = vshMalloc(ctl, sizeof(virSchedParameter)* nparams);
for (i = 0; i < nparams; i++){
params[i].type = 0;
memset (params[i].field, 0, sizeof params[i].field);
}
ret = virDomainGetSchedulerParameters(dom, params, &nparams);
if (ret == -1) return FALSE;
if(nparams){
for (i = 0; i < nparams; i++){
switch (params[i].type) {
case VIR_DOMAIN_SCHED_FIELD_INT:
printf("%-15s: %d\n", params[i].field, params[i].value.i);
break;
case VIR_DOMAIN_SCHED_FIELD_UINT:
printf("%-15s: %u\n", params[i].field, params[i].value.ui);
break;
case VIR_DOMAIN_SCHED_FIELD_LLONG:
printf("%-15s: %Ld\n", params[i].field, params[i].value.l);
break;
case VIR_DOMAIN_SCHED_FIELD_ULLONG:
printf("%-15s: %Lu\n", params[i].field, params[i].value.ul);
break;
case VIR_DOMAIN_SCHED_FIELD_DOUBLE:
printf("%-15s: %f\n", params[i].field, params[i].value.d);
break;
case VIR_DOMAIN_SCHED_FIELD_BOOLEAN:
printf("%-15s: %d\n", params[i].field, params[i].value.b);
break;
default:
printf("not implemented scheduler parameter type\n");
}
}
}
free(params);
return TRUE;
}
/*
* "restore" command
*/
@ -2592,6 +2716,7 @@ static vshCmdDef commands[] = {
{"restore", cmdRestore, opts_restore, info_restore},
{"resume", cmdResume, opts_resume, info_resume},
{"save", cmdSave, opts_save, info_save},
{"schedinfo", cmdSchedinfo, opts_schedinfo, info_schedinfo},
{"dump", cmdDump, opts_dump, info_dump},
{"shutdown", cmdShutdown, opts_shutdown, info_shutdown},
{"setmem", cmdSetmem, opts_setmem, info_setmem},

362
src/xen_internal.c
View File

@ -180,6 +180,19 @@ union xen_getdomaininfolist {
};
typedef union xen_getdomaininfolist xen_getdomaininfolist;
struct xen_v2_getschedulerid {
uint32_t sched_id; /* Get Scheduler ID from Xen */
};
typedef struct xen_v2_getschedulerid xen_v2_getschedulerid;
union xen_getschedulerid {
struct xen_v2_getschedulerid *v2;
};
typedef union xen_getschedulerid xen_getschedulerid;
#define XEN_GETDOMAININFOLIST_ALLOC(domlist, size) \
(hypervisor_version < 2 ? \
((domlist.v0 = malloc(sizeof(xen_v0_getdomaininfo)*(size))) != NULL) : \
@ -468,6 +481,43 @@ typedef struct xen_v2d5_vcpuinfo xen_v2d5_vcpuinfo;
typedef struct xen_v2_setvcpumap xen_v2_getvcpumap;
typedef struct xen_v2d5_setvcpumap xen_v2d5_getvcpumap;
/*
* from V2 we get the scheduler information
*/
#define XEN_V2_OP_GETSCHEDULERID 4
/*
* from V2 we get the scheduler parameter
*/
#define XEN_V2_OP_SCHEDULER 16
/* Scheduler types. */
#define XEN_SCHEDULER_SEDF 4
#define XEN_SCHEDULER_CREDIT 5
/* get/set scheduler parameters */
#define XEN_DOMCTL_SCHEDOP_putinfo 0
#define XEN_DOMCTL_SCHEDOP_getinfo 1
struct xen_v2_setschedinfo {
uint32_t sched_id;
uint32_t cmd;
union {
struct xen_domctl_sched_sedf {
uint64_t period ALIGN_64;
uint64_t slice ALIGN_64;
uint64_t latency ALIGN_64;
uint32_t extratime;
uint32_t weight;
} sedf;
struct xen_domctl_sched_credit {
uint16_t weight;
uint16_t cap;
} credit;
} u;
};
typedef struct xen_v2_setschedinfo xen_v2_setschedinfo;
typedef struct xen_v2_setschedinfo xen_v2_getschedinfo;
/*
* The hypercall operation structures also have changed on
* changeset 86d26e6ec89b
@ -496,6 +546,7 @@ struct xen_op_v2_sys {
union {
xen_v2_getdomaininfolistop getdomaininfolist;
xen_v2s3_getdomaininfolistop getdomaininfolists3;
xen_v2_getschedulerid getschedulerid;
uint8_t padding[128];
} u;
};
@ -516,6 +567,8 @@ struct xen_op_v2_dom {
xen_v2d5_vcpuinfo getvcpuinfod5;
xen_v2_getvcpumap getvcpumap;
xen_v2d5_getvcpumap getvcpumapd5;
xen_v2_setschedinfo setschedinfo;
xen_v2_getschedinfo getschedinfo;
uint8_t padding[128];
} u;
};
@ -580,6 +633,9 @@ virDriver xenHypervisorDriver = {
NULL, /* domainDetachDevice */
NULL, /* domainGetAutostart */
NULL, /* domainSetAutostart */
xenHypervisorGetSchedulerType, /* domainGetSchedulerType */
xenHypervisorGetSchedulerParameters, /* domainGetSchedulerParameters */
xenHypervisorSetSchedulerParameters, /* domainSetSchedulerParameters */
};
#endif /* !PROXY */
@ -604,6 +660,38 @@ virXenError(virErrorNumber error, const char *info, int value)
errmsg, info, NULL, value, 0, errmsg, info);
}
/**
* virXenErrorFunc:
* @error: the error number
* @func: the function failing
* @info: extra information string
* @value: extra information number
*
* Handle an error at the xend daemon interface
*/
static void
virXenErrorFunc(virErrorNumber error, const char *func, const char *info,
int value)
{
char fullinfo[1000]
const char *errmsg;
if ((error == VIR_ERR_OK) || (in_init != 0))
return;
errmsg = __virErrorMsg(error, info);
if (func != NULL) {
snprintf(fullinfo, 999, "%s: %s", func, info);
fullinfo[999] = 0;
__virRaiseError(NULL, NULL, NULL, VIR_FROM_XEN, error, VIR_ERR_ERROR,
errmsg, fullinfo, NULL, value, 0, errmsg, fullinfo);
} else {
__virRaiseError(NULL, NULL, NULL, VIR_FROM_XEN, error, VIR_ERR_ERROR,
errmsg, info, NULL, value, 0, errmsg, info);
}
}
/**
* virXenPerror:
* @conn: the connection (if available)
@ -739,7 +827,7 @@ xenHypervisorDoV2Sys(int handle, xen_op_v2_sys* op)
ret = ioctl(handle, xen_ioctl_hypercall_cmd, (unsigned long) &hc);
if (ret < 0) {
virXenError(VIR_ERR_XEN_CALL, " ioctl ", xen_ioctl_hypercall_cmd);
virXenError(VIR_ERR_XEN_CALL, " sys ioctl ", xen_ioctl_hypercall_cmd);
}
if (munlock(op, sizeof(dom0_op_t)) < 0) {
@ -893,6 +981,278 @@ virXen_getdomaininfo(int handle, int first_domain,
#ifndef PROXY
/**
* xenHypervisorGetSchedulerType:
* @domain: pointer to the Xen Hypervisor block
* @nparams:give a number of scheduler parameters.
*
* Do a low level hypercall to get scheduler type
*
* Returns scheduler name or NULL in case of failure
*/
char *
xenHypervisorGetSchedulerType(virDomainPtr domain, int *nparams)
{
char *schedulertype = NULL;
xenUnifiedPrivatePtr priv;
if ((domain == NULL) || (domain->conn == NULL)) {
virXenErrorFunc(VIR_ERR_INTERNAL_ERROR, __FUNCTION__,
"domain or conn is NULL", 0);
return NULL;
}
priv = (xenUnifiedPrivatePtr) domain->conn->privateData;
if (priv->handle < 0 || domain->id < 0) {
virXenErrorFunc(VIR_ERR_INTERNAL_ERROR, __FUNCTION__,
"priv->handle or domain->id invalid", 0);
return NULL;
}
/*
* Support only dom_interface_version >=5
* (Xen3.1.0 or later)
*/
if (dom_interface_version < 5) {
virXenErrorFunc(VIR_ERR_NO_XEN, __FUNCTION__,
"unsupported in dom interface < 5", 0);
return NULL;
}
if (hypervisor_version > 1) {
xen_op_v2_sys op;
int ret;
memset(&op, 0, sizeof(op));
op.cmd = XEN_V2_OP_GETSCHEDULERID;
ret = xenHypervisorDoV2Sys(priv->handle, &op);
if (ret < 0)
return(NULL);
switch (op.u.getschedulerid.sched_id){
case XEN_SCHEDULER_SEDF:
schedulertype = strdup("sedf");
if (nparams)
*nparams = 6;
break;
case XEN_SCHEDULER_CREDIT:
schedulertype = strdup("credit");
if (nparams)
*nparams = 2;
break;
default:
break;
}
}
return schedulertype;
}
/**
* xenHypervisorGetSchedulerParameters:
* @domain: pointer to the Xen Hypervisor block
* @params: pointer to scheduler parameters.
* This memory area should be allocated before calling.
* @nparams:this parameter should be same as
* a given number of scheduler parameters.
* from xenHypervisorGetSchedulerType().
*
* Do a low level hypercall to get scheduler parameters
*
* Returns 0 or -1 in case of failure
*/
int
xenHypervisorGetSchedulerParameters(virDomainPtr domain,
virSchedParameterPtr params, int *nparams)
{
xenUnifiedPrivatePtr priv;
char str_weight[] ="weight";
char str_cap[] ="cap";
if ((domain == NULL) || (domain->conn == NULL)) {
virXenErrorFunc(VIR_ERR_INTERNAL_ERROR, __FUNCTION__,
"domain or conn is NULL", 0);
return -1;
}
priv = (xenUnifiedPrivatePtr) domain->conn->privateData;
if (priv->handle < 0 || domain->id < 0) {
virXenErrorFunc(VIR_ERR_INTERNAL_ERROR, __FUNCTION__,
"priv->handle or domain->id invalid", 0);
return -1;
}
/*
* Support only dom_interface_version >=5
* (Xen3.1.0 or later)
* TODO: check on Xen 3.0.3
*/
if (dom_interface_version < 5) {
virXenErrorFunc(VIR_ERR_NO_XEN, __FUNCTION__,
"unsupported in dom interface < 5", 0);
return -1;
}
if (hypervisor_version > 1) {
xen_op_v2_sys op_sys;
xen_op_v2_dom op_dom;
int ret;
memset(&op_sys, 0, sizeof(op_sys));
op_sys.cmd = XEN_V2_OP_GETSCHEDULERID;
ret = xenHypervisorDoV2Sys(priv->handle, &op_sys);
if (ret < 0)
return -1;
switch (op_sys.u.getschedulerid.sched_id){
case XEN_SCHEDULER_SEDF:
/* TODO: Implement for Xen/SEDF */
TODO
return(-1);
case XEN_SCHEDULER_CREDIT:
if (*nparams < 2)
return(-1);
memset(&op_dom, 0, sizeof(op_dom));
op_dom.cmd = XEN_V2_OP_SCHEDULER;
op_dom.domain = (domid_t) domain->id;
op_dom.u.getschedinfo.sched_id = XEN_SCHEDULER_CREDIT;
op_dom.u.getschedinfo.cmd = XEN_DOMCTL_SCHEDOP_getinfo;
ret = xenHypervisorDoV2Dom(priv->handle, &op_dom);
if (ret < 0)
return(-1);
strncpy(params[0].field, str_weight, strlen(str_weight));
params[0].type = VIR_DOMAIN_SCHED_FIELD_UINT;
params[0].value.ui = op_dom.u.getschedinfo.u.credit.weight;
strncpy(params[1].field, str_cap, strlen(str_cap));
params[1].type = VIR_DOMAIN_SCHED_FIELD_UINT;
params[1].value.ui = op_dom.u.getschedinfo.u.credit.cap;
*nparams = 2;
break;
default:
virXenErrorFunc(VIR_ERR_INVALID_ARG, __FUNCTION__,
"Unknown scheduler", op_sys.u.getschedulerid.sched_id);
return -1;
}
}
return 0;
}
/**
* xenHypervisorSetSchedulerParameters:
* @domain: pointer to the Xen Hypervisor block
* @nparams:give a number of scheduler setting parameters .
*
* Do a low level hypercall to set scheduler parameters
*
* Returns 0 or -1 in case of failure
*/
int
xenHypervisorSetSchedulerParameters(virDomainPtr domain,
virSchedParameterPtr params, int nparams)
{
int i;
xenUnifiedPrivatePtr priv;
char str_weight[] ="weight";
char str_cap[] ="cap";
if ((domain == NULL) || (domain->conn == NULL)) {
virXenErrorFunc (VIR_ERR_INTERNAL_ERROR, __FUNCTION__,
"domain or conn is NULL", 0);
return -1;
}
if ((nparams == 0) || (params == NULL)) {
virXenErrorFunc (VIR_ERR_INVALID_ARG, __FUNCTION__,
"Noparameters given", 0);
return(-1);
}
priv = (xenUnifiedPrivatePtr) domain->conn->privateData;
if (priv->handle < 0 || domain->id < 0) {
virXenErrorFunc (VIR_ERR_INTERNAL_ERROR, __FUNCTION__,
"priv->handle or domain->id invalid", 0);
return -1;
}
/*
* Support only dom_interface_version >=5
* (Xen3.1.0 or later)
* TODO: check on Xen 3.0.3
*/
if (dom_interface_version < 5) {
virXenError(VIR_ERR_NO_XEN, __FUNCTION__,
"unsupported in dom interface < 5", 0);
return -1;
}
if (hypervisor_version > 1) {
xen_op_v2_sys op_sys;
xen_op_v2_dom op_dom;
int ret;
memset(&op_sys, 0, sizeof(op_sys));
op_sys.cmd = XEN_V2_OP_GETSCHEDULERID;
ret = xenHypervisorDoV2Sys(priv->handle, &op_sys);
if (ret == -1) return -1;
switch (op_sys.u.getschedulerid.sched_id){
case XEN_SCHEDULER_SEDF:
/* TODO: Implement for Xen/SEDF */
TODO
return(-1);
case XEN_SCHEDULER_CREDIT: {
int weight_set = 0;
int cap_set = 0;
memset(&op_dom, 0, sizeof(op_dom));
op_dom.cmd = XEN_V2_OP_SCHEDULER;
op_dom.domain = (domid_t) domain->id;
op_dom.u.getschedinfo.sched_id = XEN_SCHEDULER_CREDIT;
op_dom.u.getschedinfo.cmd = XEN_DOMCTL_SCHEDOP_putinfo;
/*
* credit scheduler parameters
* following values do not change the parameters
*/
op_dom.u.getschedinfo.u.credit.weight = 0;
op_dom.u.getschedinfo.u.credit.cap = (uint16_t)~0U;
for (i = 0; i < nparams; i++) {
if (!strncmp(params[i].field,str_weight,strlen(str_weight)) &&
params[i].type == VIR_DOMAIN_SCHED_FIELD_UINT) {
op_dom.u.getschedinfo.u.credit.weight = params[i].value.ui;
weight_set = 1;
} else if (!strncmp(params[i].field,str_cap,strlen(str_cap)) &&
params[i].type == VIR_DOMAIN_SCHED_FIELD_UINT) {
op_dom.u.getschedinfo.u.credit.cap = params[i].value.ui;
cap_set = 1;
} else {
virXenErrorFunc (VIR_ERR_INVALID_ARG, __FUNCTION__,
"Credit scheduler accepts 'cap' and 'weight' integer parameters",
0);
return(-1);
}
}
ret = xenHypervisorDoV2Dom(priv->handle, &op_dom);
if (ret < 0)
return -1;
break;
}
default:
virXenErrorFunc(VIR_ERR_INVALID_ARG, __FUNCTION__,
"Unknown scheduler", op_sys.u.getschedulerid.sched_id);
return -1;
}
}
return 0;
}
/**
* virXen_pausedomain:
* @handle: the hypervisor handle

11
src/xen_internal.h
View File

@ -66,6 +66,17 @@ int xenHypervisorGetVcpus (virDomainPtr domain,
int maplen);
int xenHypervisorGetVcpuMax (virDomainPtr domain);
char * xenHypervisorGetSchedulerType (virDomainPtr domain,
int *nparams);
int xenHypervisorGetSchedulerParameters (virDomainPtr domain,
virSchedParameterPtr params,
int *nparams);
int xenHypervisorSetSchedulerParameters (virDomainPtr domain,
virSchedParameterPtr params,
int nparams);
#ifdef __cplusplus
}
#endif

55
src/xen_unified.c
View File

@ -775,6 +775,58 @@ xenUnifiedDomainSetAutostart (virDomainPtr dom, int autostart)
return -1;
}
static char *
xenUnifiedDomainGetSchedulerType (virDomainPtr dom, int *nparams)
{
GET_PRIVATE(dom->conn);
int i;
char *schedulertype;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; i++) {
if (priv->opened[i] && drivers[i]->domainGetSchedulerType) {
schedulertype = drivers[i]->domainGetSchedulerType (dom, nparams);
if (schedulertype != NULL)
return(schedulertype);
}
}
return(NULL);
}
static int
xenUnifiedDomainGetSchedulerParameters (virDomainPtr dom,
virSchedParameterPtr params, int *nparams)
{
GET_PRIVATE(dom->conn);
int i, ret;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i) {
if (priv->opened[i] && drivers[i]->domainGetSchedulerParameters) {
ret = drivers[i]->domainGetSchedulerParameters(dom, params, nparams);
if (ret == 0)
return(0);
}
}
return(-1);
}
static int
xenUnifiedDomainSetSchedulerParameters (virDomainPtr dom,
virSchedParameterPtr params, int nparams)
{
GET_PRIVATE(dom->conn);
int i, ret;
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i) {
if (priv->opened[i] && drivers[i]->domainSetSchedulerParameters) {
ret = drivers[i]->domainSetSchedulerParameters(dom, params, nparams);
if (ret == 0)
return 0;
}
}
return(-1);
}
/*----- Register with libvirt.c, and initialise Xen drivers. -----*/
#define VERSION ((DOM0_INTERFACE_VERSION >> 24) * 1000000 + \
@ -826,6 +878,9 @@ static virDriver xenUnifiedDriver = {
.domainDetachDevice = xenUnifiedDomainDetachDevice,
.domainGetAutostart = xenUnifiedDomainGetAutostart,
.domainSetAutostart = xenUnifiedDomainSetAutostart,
.domainGetSchedulerType = xenUnifiedDomainGetSchedulerType,
.domainGetSchedulerParameters = xenUnifiedDomainGetSchedulerParameters,
.domainSetSchedulerParameters = xenUnifiedDomainSetSchedulerParameters,
};
/**

3
src/xend_internal.c
View File

@ -108,6 +108,9 @@ virDriver xenDaemonDriver = {
xenDaemonDetachDevice, /* domainDetachDevice */
NULL, /* domainGetAutostart */
NULL, /* domainSetAutostart */
NULL, /* domainGetSchedulerType */
NULL, /* domainGetSchedulerParameters */
NULL, /* domainSetSchedulerParameters */
};
/**

3
src/xm_internal.c
View File

@ -113,6 +113,9 @@ virDriver xenXMDriver = {
NULL, /* domainDetachDevice */
NULL, /* domainGetAutostart */
NULL, /* domainSetAutostart */
NULL, /* domainGetSchedulerType */
NULL, /* domainGetSchedulerParameters */
NULL, /* domainSetSchedulerParameters */
};
static void

3
src/xs_internal.c
View File

@ -82,6 +82,9 @@ virDriver xenStoreDriver = {
NULL, /* domainDetachDevice */
NULL, /* domainGetAutostart */
NULL, /* domainSetAutostart */
NULL, /* domainGetSchedulerType */
NULL, /* domainGetSchedulerParameters */
NULL, /* domainSetSchedulerParameters */
};
/**