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From c00106d41b74d86ee7357ed62399ea7ffb9cd393 Mon Sep 17 00:00:00 2001
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Message-Id: <c00106d41b74d86ee7357ed62399ea7ffb9cd393@dist-git>
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From: Bing Niu <bing.niu@intel.com>
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Date: Mon, 15 Apr 2019 17:32:56 +0200
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Subject: [PATCH] conf: Factor out vcpus overlapping from
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virDomainCachetuneDefParse
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Factor out vcpus overlapping detecting part from
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virDomainCachetuneDefParse and introduce virDomainResctrlVcpuMatch.
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Instead of allocating virResctrlAllocPtr by default, allocating
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virResctrlAllocPtr after confirm vcpus not overlap with existing ones.
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And virDomainResctrlVcpuMatch can be reused by other resource control
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technologies. virDomainResctrlVcpuMatch can clarify old vcpus overlap
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error whether an overlap or a redefinition.
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Signed-off-by: Bing Niu <bing.niu@intel.com>
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Reviewed-by: John Ferlan <jferlan@redhat.com>
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(cherry picked from commit e5cc7c0a0258530000aa9fd930c649b525b6f801)
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Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1468650
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Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
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Message-Id: <ee62ff896868ef147f9d7e6c67a5c151e0c4695b.1555342313.git.phrdina@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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---
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src/conf/domain_conf.c | 51 ++++++++++++++++++++++++++++++++----------
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1 file changed, 39 insertions(+), 12 deletions(-)
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diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
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index 07d21f8026..fb5adbcd10 100644
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--- a/src/conf/domain_conf.c
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+++ b/src/conf/domain_conf.c
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@@ -19077,6 +19077,31 @@ virDomainResctrlParseVcpus(virDomainDefPtr def,
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}
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+static int
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+virDomainResctrlVcpuMatch(virDomainDefPtr def,
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+ virBitmapPtr vcpus,
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+ virResctrlAllocPtr *alloc)
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+{
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+ ssize_t i = 0;
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+
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+ for (i = 0; i < def->nresctrls; i++) {
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+ /* vcpus group has been created, directly use the existing one.
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+ * Just updating memory allocation information of that group
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+ */
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+ if (virBitmapEqual(def->resctrls[i]->vcpus, vcpus)) {
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+ *alloc = def->resctrls[i]->alloc;
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+ break;
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+ }
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+ if (virBitmapOverlaps(def->resctrls[i]->vcpus, vcpus)) {
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+ virReportError(VIR_ERR_XML_ERROR, "%s",
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+ _("Overlapping vcpus in resctrls"));
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+ return -1;
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+ }
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+ }
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+ return 0;
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+}
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+
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+
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static int
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virDomainCachetuneDefParseCache(xmlXPathContextPtr ctxt,
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xmlNodePtr node,
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@@ -19160,7 +19185,7 @@ virDomainCachetuneDefParse(virDomainDefPtr def,
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xmlNodePtr oldnode = ctxt->node;
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xmlNodePtr *nodes = NULL;
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virBitmapPtr vcpus = NULL;
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- virResctrlAllocPtr alloc = virResctrlAllocNew();
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+ virResctrlAllocPtr alloc = NULL;
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virDomainResctrlDefPtr tmp_resctrl = NULL;
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char *tmp = NULL;
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char *vcpus_str = NULL;
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@@ -19171,9 +19196,6 @@ virDomainCachetuneDefParse(virDomainDefPtr def,
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ctxt->node = node;
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- if (!alloc)
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- goto cleanup;
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-
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if (VIR_ALLOC(tmp_resctrl) < 0)
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goto cleanup;
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@@ -19191,6 +19213,19 @@ virDomainCachetuneDefParse(virDomainDefPtr def,
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goto cleanup;
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}
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+ if (virDomainResctrlVcpuMatch(def, vcpus, &alloc) < 0)
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+ goto cleanup;
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+
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+ if (!alloc) {
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+ alloc = virResctrlAllocNew();
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+ if (!alloc)
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+ goto cleanup;
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+ } else {
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+ virReportError(VIR_ERR_XML_ERROR, "%s",
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+ _("Identical vcpus in cachetunes found"));
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+ goto cleanup;
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+ }
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+
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for (i = 0; i < n; i++) {
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if (virDomainCachetuneDefParseCache(ctxt, nodes[i], alloc) < 0)
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goto cleanup;
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@@ -19201,14 +19236,6 @@ virDomainCachetuneDefParse(virDomainDefPtr def,
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goto cleanup;
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}
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- for (i = 0; i < def->nresctrls; i++) {
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- if (virBitmapOverlaps(def->resctrls[i]->vcpus, vcpus)) {
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- virReportError(VIR_ERR_XML_ERROR, "%s",
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- _("Overlapping vcpus in cachetunes"));
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- goto cleanup;
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- }
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- }
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-
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/* We need to format it back because we need to be consistent in the naming
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* even when users specify some "sub-optimal" string there. */
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VIR_FREE(vcpus_str);
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--
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2.21.0
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