Re: [libvirt] [PATCH 17/21] conf: cachetune

Signed-off-by: Martin Kletzander <mkletzan(a)redhat.com&gt; --- docs/formatdomain.html.in | 24 ++ docs/schemas/domaincommon.rng | 32 +++ src/conf/domain_conf.c | 249 +++++++++++++++++++++ src/conf/domain_conf.h | 21 ++ src/util/virresctrl.c | 2 +- .../genericxml2xmlindata/generic-cachetune-cdp.xml | 36 +++ .../generic-cachetune-colliding-allocs.xml | 30 +++ .../generic-cachetune-colliding-tunes.xml | 32 +++ .../generic-cachetune-colliding-types.xml | 30 +++ .../generic-cachetune-small.xml | 29 +++ tests/genericxml2xmlindata/generic-cachetune.xml | 33 +++ tests/genericxml2xmltest.c | 10 + 12 files changed, 527 insertions(+), 1 deletion(-) create mode 100644 tests/genericxml2xmlindata/generic-cachetune-cdp.xml create mode 100644 tests/genericxml2xmlindata/generic-cachetune-colliding-allocs.xml create mode 100644 tests/genericxml2xmlindata/generic-cachetune-colliding-tunes.xml create mode 100644 tests/genericxml2xmlindata/generic-cachetune-colliding-types.xml create mode 100644 tests/genericxml2xmlindata/generic-cachetune-small.xml create mode 100644 tests/genericxml2xmlindata/generic-cachetune.xml

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 400e900325f2..bf9e61efc8d2 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c

+static int +virDomainCachetuneDefParse(virDomainDefPtr def, + xmlXPathContextPtr ctxt, + xmlNodePtr node) +{ + xmlNodePtr oldnode = ctxt->node; + xmlNodePtr *nodes = NULL; + virBitmapPtr vcpus = NULL; + virResctrlAllocPtr alloc = NULL; + virDomainCachetuneDefPtr tmp_cachetune = NULL; + char *tmp = NULL; + char *vcpus_str = NULL; + ssize_t i = 0; + int n; + int ret = -1; + + ctxt->node = node; + + if (VIR_ALLOC(tmp_cachetune) < 0) + goto cleanup; + + vcpus_str = virXMLPropString(node, "vcpus"); + if (!vcpus_str) { + virReportError(VIR_ERR_XML_ERROR, "%s", + _("Missing attribute vcpus for cachetune")); + goto cleanup; + } + if (virBitmapParse(vcpus_str, &vcpus, VIR_DOMAIN_CPUMASK_LEN) < 0) { + virReportError(VIR_ERR_XML_ERROR, + _("Invalid attribute vcpus '%s' for cachetune"), + vcpus_str); + goto cleanup; + } + + if ((n = virXPathNodeSet("./cache", ctxt, &nodes)) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("cannot extract cachetune/cache nodes")); + goto cleanup; + } + + for (i = 0; i < n; i++) { + if (virDomainCachetuneDefParseCache(ctxt, nodes[i], &alloc) < 0) + goto cleanup; + } + + if (!alloc) { + ret = 0; + goto cleanup; + } + + virBitmapShrink(vcpus, def->maxvcpus); + + for (i = 0; i < def->ncachetunes; i++) { + if (virBitmapOverlaps(def->cachetunes[i]->vcpus, vcpus)) { + virReportError(VIR_ERR_XML_ERROR, "%s", + _("Overlapping vcpus in cachetunes")); + goto cleanup; + } + } + + if (virResctrlAllocSetID(alloc, vcpus_str) < 0) + goto cleanup; + + tmp_cachetune->vcpus = vcpus; + tmp_cachetune->alloc = alloc; + vcpus = NULL; + alloc = NULL;

+ + if (VIR_APPEND_ELEMENT(def->cachetunes, def->ncachetunes, tmp_cachetune) < 0) + goto cleanup; + + ret = 0; + cleanup: + ctxt->node = oldnode; + virDomainCachetuneDefFree(tmp_cachetune); + virObjectUnref(alloc); + virBitmapFree(vcpus); + VIR_FREE(vcpus_str); + VIR_FREE(nodes); + VIR_FREE(tmp); + return ret; +} + + static virDomainDefPtr virDomainDefParseXML(xmlDocPtr xml, xmlNodePtr root, @@ -18632,6 +18804,18 @@ virDomainDefParseXML(xmlDocPtr xml, } VIR_FREE(nodes); + if ((n = virXPathNodeSet("./cputune/cachetune", ctxt, &nodes)) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("cannot extract cachetune nodes")); + goto error; + } + + for (i = 0; i < n; i++) { + if (virDomainCachetuneDefParse(def, ctxt, nodes[i]) < 0) + goto error; + } + VIR_FREE(nodes); + if (virCPUDefParseXML(ctxt, "./cpu[1]", VIR_CPU_TYPE_GUEST, &def->cpu) < 0) goto error; @@ -25444,6 +25628,68 @@ virDomainSchedulerFormat(virBufferPtr buf, } +struct virCachetuneHelperData { + virBufferPtr buf; + size_t vcpu_id; +}; + +static int +virDomainCachetuneDefFormatHelper(unsigned int level, + virCacheType type, + unsigned int cache, + unsigned long long size, + void *opaque)

+{ + const char *unit; + virBufferPtr buf = opaque; + unsigned long long short_size = virPrettySize(size, &unit); + + virBufferAsprintf(buf, + "<cache id='%u' level='%u' type='%s' " + "size='%llu' unit='%s'/>\n", + cache, level, virCacheTypeToString(type), + short_size, unit); + + return 0; +}