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Mon, 13 Feb 2017 07:45:09 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.31]); Mon, 13 Feb 2017 07:45:09 +0000 (UTC) for IP:'192.55.52.115' DOMAIN:'mga14.intel.com' HELO:'mga14.intel.com' FROM:'liyong.qiao@intel.com' RCPT:'' X-RedHat-Spam-Score: -4.622 (BAYES_50, DCC_REPUT_00_12, RCVD_IN_DNSWL_HI, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, RP_MATCHES_RCVD, SPF_PASS) 192.55.52.115 mga14.intel.com 192.55.52.115 mga14.intel.com X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 X-Scanned-By: MIMEDefang 2.78 on 10.5.110.31 X-loop: libvir-list@redhat.com Cc: mkletzan@redhat.com, qiaowei.ren@intel.com, mtosatti@redhat.com, qiaoliyong@gmail.com Subject: [libvirt] [v5 3/9] Resctrl: Add new xml element to support cache tune X-BeenThere: libvir-list@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: Development discussions about the libvirt library & tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Sender: libvir-list-bounces@redhat.com Errors-To: libvir-list-bounces@redhat.com X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" This patch adds new xml element to support cache tune as: ... ... id: any non-minus number host_id: reference of the host's cache banks id, it's from capabilities type: cache bank type size: should be multiples of the min_size of the bank on host. vcpus: cache allocation on vcpu set, if empty, will apply the allocation on all vcpus --- docs/schemas/domaincommon.rng | 46 +++++++++++++ src/conf/domain_conf.c | 152 ++++++++++++++++++++++++++++++++++++++= ++++ src/conf/domain_conf.h | 19 ++++++ src/util/virresctrl.c | 32 +++++++-- src/util/virresctrl.h | 1 + 5 files changed, 245 insertions(+), 5 deletions(-) diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng index cc6e0d0..edb2888 100644 --- a/docs/schemas/domaincommon.rng +++ b/docs/schemas/domaincommon.rng @@ -795,6 +795,32 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + @@ -5451,6 +5477,26 @@ -1 + + + [0-9]+ + + + + + [0-9]+ + + + + + (l3) + + + + + KiB + + diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index c06b128..430c451 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -56,6 +56,7 @@ #include "virstring.h" #include "virnetdev.h" #include "virhostdev.h" +#include "virresctrl.h" =20 #define VIR_FROM_THIS VIR_FROM_DOMAIN =20 @@ -15604,6 +15605,127 @@ virDomainVcpuPinDefParseXML(virDomainDefPtr def, return ret; } =20 +/* Parse the XML definition for cachetune + * and a cachetune has the form + * + */ +static int +virDomainCacheTuneDefParseXML(virDomainDefPtr def, + int n, + xmlNodePtr* nodes) +{ + char* tmp =3D NULL; + size_t i, j; + int type =3D -1; + virDomainCacheBankPtr bank =3D NULL; + virResCtrlPtr resctrl; + + if (VIR_ALLOC_N(bank, n) < 0) + goto cleanup; + + for (i =3D 0; i < n; i++) { + if (!(tmp =3D virXMLPropString(nodes[i], "id"))) { + virReportError(VIR_ERR_XML_ERROR, "%s", _("missing id in cache= tune")); + goto cleanup; + } + if (virStrToLong_uip(tmp, NULL, 10, &(bank[i].id)) < 0) { + virReportError(VIR_ERR_XML_ERROR, + _("invalid setting for cache id '%s'"), tmp); + goto cleanup; + } + + VIR_FREE(tmp); + if (!(tmp =3D virXMLPropString(nodes[i], "host_id"))) { + virReportError(VIR_ERR_XML_ERROR, "%s", _("missing host id in = cache tune")); + goto cleanup; + } + if (virStrToLong_uip(tmp, NULL, 10, &(bank[i].host_id)) < 0) { + virReportError(VIR_ERR_XML_ERROR, + _("invalid setting for cache host id '%s'"), tm= p); + goto cleanup; + } + VIR_FREE(tmp); + + if (!(tmp =3D virXMLPropString(nodes[i], "size"))) { + virReportError(VIR_ERR_XML_ERROR, "%s", _("missing size in cac= he tune")); + goto cleanup; + } + if (virStrToLong_ull(tmp, NULL, 10, &(bank[i].size)) < 0) { + virReportError(VIR_ERR_XML_ERROR, + _("invalid setting for cache size '%s'"), tmp); + goto cleanup; + } + VIR_FREE(tmp); + + if (!(tmp =3D virXMLPropString(nodes[i], "type"))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("missing cache type")); + goto cleanup; + } + + if ((type =3D virResCtrlTypeFromString(tmp)) < 0) { + virReportError(VIR_ERR_XML_ERROR, + _("'unsupported cache type '%s'"), tmp); + goto cleanup; + } + + resctrl =3D virResCtrlGet(type); + + if (resctrl =3D=3D NULL || !resctrl->enabled) { + virReportError(VIR_ERR_XML_ERROR, + _("'host doesn't enabled cache type '%s'"), tmp); + goto cleanup; + } + + bool found_host_id =3D false; + /* Loop for banks to search host_id */ + for (j =3D 0; j < resctrl->num_banks; j++) { + if (resctrl->cache_banks[j].host_id =3D=3D bank[i].host_id) { + found_host_id =3D true; + break; + } + } + + if (! found_host_id) { + virReportError(VIR_ERR_XML_ERROR, + _("'cache bank's host id %u not found on the host"), + bank[i].host_id); + goto cleanup; + } + + if (bank[i].size =3D=3D 0 || + bank[i].size % resctrl->cache_banks[j].cache_min !=3D 0) { + virReportError(VIR_ERR_XML_ERROR, + _("'the size should be multiples of '%llu'"), + resctrl->cache_banks[j].cache_min); + goto cleanup; + } + + if (VIR_STRDUP(bank[i].type, tmp) < 0) + goto cleanup; + + if ((tmp =3D virXMLPropString(nodes[i], "vcpus"))) { + if (virBitmapParse(tmp, &bank[i].vcpus, + VIR_DOMAIN_CPUMASK_LEN) < 0) + goto cleanup; + + if (virBitmapIsAllClear(bank[i].vcpus)) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("Invalid value of 'vcpus': %s"), tmp); + goto cleanup; + } + } + } + + def->cachetune.cache_banks =3D bank; + def->cachetune.n_banks =3D n; + return 0; + + cleanup: + VIR_FREE(bank); + VIR_FREE(tmp); + return -1; +} =20 /* Parse the XML definition for a iothreadpin * and an iothreadspin has the form @@ -16882,6 +17004,14 @@ virDomainDefParseXML(xmlDocPtr xml, } VIR_FREE(nodes); =20 + if ((n =3D virXPathNodeSet("./cputune/cachetune", ctxt, &nodes)) < 0) + goto error; + + if (virDomainCacheTuneDefParseXML(def, n, nodes) < 0) + goto error; + + VIR_FREE(nodes); + if ((n =3D virXPathNodeSet("./cputune/emulatorpin", ctxt, &nodes)) < 0= ) { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("cannot extract emulatorpin nodes")); @@ -23398,6 +23528,26 @@ virDomainSchedulerFormat(virBufferPtr buf, =20 } =20 +static void +virDomainCacheTuneDefFormat(virBufferPtr buf, + virDomainCachetunePtr cache) +{ + size_t i; + for (i =3D 0; i < cache->n_banks; i ++) { + virBufferAsprintf(buf, "cache_banks[i].id, + cache->cache_banks[i].host_id, + cache->cache_banks[i].type, + cache->cache_banks[i].size); + + if (cache->cache_banks[i].vcpus) + virBufferAsprintf(buf, " vcpus=3D'%s'/>\n", + virBitmapFormat(cache->cache_banks[i].vcpus)); + else + virBufferAddLit(buf, "/>\n"); + } +} =20 static int virDomainCputuneDefFormat(virBufferPtr buf, @@ -23461,6 +23611,8 @@ virDomainCputuneDefFormat(virBufferPtr buf, VIR_FREE(cpumask); } =20 + virDomainCacheTuneDefFormat(&childrenBuf, &def->cachetune); + if (def->cputune.emulatorpin) { char *cpumask; virBufferAddLit(&childrenBuf, "schematas[type]->schemata_items[pos] =3D val =20 =20 static unsigned int host_id; diff --git a/src/util/virresctrl.h b/src/util/virresctrl.h index aa113f4..3f6fcae 100644 --- a/src/util/virresctrl.h +++ b/src/util/virresctrl.h @@ -36,6 +36,7 @@ enum { VIR_RDT_RESOURCE_LAST, }; =20 +VIR_ENUM_DECL(virResCtrl); =20 typedef struct _virResCacheBank virResCacheBank; typedef virResCacheBank *virResCacheBankPtr; --=20 1.9.1 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list