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From 12745d1c8180273ad1028da0da7440cb959819eb Mon Sep 17 00:00:00 2001
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Message-Id: <12745d1c8180273ad1028da0da7440cb959819eb@dist-git>
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From: Martin Kletzander <mkletzan@redhat.com>
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Date: Wed, 31 Jan 2018 16:32:40 +0100
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Subject: [PATCH] util: Add helpers for getting resctrl group allocs
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Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
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(cherry picked from commit f6199295a9656a79e29cab9ed5694f040c266998)
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Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
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https://bugzilla.redhat.com/show_bug.cgi?id=1289368
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Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
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---
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src/util/virresctrl.c | 81 ++++++++++++++++++++++++++++++++++-----------------
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1 file changed, 54 insertions(+), 27 deletions(-)
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diff --git a/src/util/virresctrl.c b/src/util/virresctrl.c
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index 42876c6e2b..df6461a046 100644
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--- a/src/util/virresctrl.c
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+++ b/src/util/virresctrl.c
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@@ -1041,6 +1041,55 @@ virResctrlAllocParse(virResctrlInfoPtr resctrl,
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}
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+static int
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+virResctrlAllocGetGroup(virResctrlInfoPtr resctrl,
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+ const char *groupname,
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+ virResctrlAllocPtr *alloc)
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+{
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+ char *schemata = NULL;
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+ int rv = virFileReadValueString(&schemata,
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+ SYSFS_RESCTRL_PATH
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+ "/%s/schemata",
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+ groupname);
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+
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+ *alloc = NULL;
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+
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+ if (rv < 0)
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+ return rv;
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+
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+ *alloc = virResctrlAllocNew();
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+ if (!*alloc)
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+ goto error;
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+
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+ if (virResctrlAllocParse(resctrl, *alloc, schemata) < 0)
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+ goto error;
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+
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+ VIR_FREE(schemata);
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+ return 0;
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+
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+ error:
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+ VIR_FREE(schemata);
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+ virObjectUnref(*alloc);
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+ *alloc = NULL;
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+ return -1;
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+}
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+
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+
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+static virResctrlAllocPtr
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+virResctrlAllocGetDefault(virResctrlInfoPtr resctrl)
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+{
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+ virResctrlAllocPtr ret = NULL;
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+ int rv = virResctrlAllocGetGroup(resctrl, ".", &ret;;
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+
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+ if (rv == -2) {
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+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
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+ _("Could not read schemata file for the default group"));
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+ }
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+
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+ return ret;
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+}
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+
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+
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static void
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virResctrlAllocSubtractPerType(virResctrlAllocPerTypePtr dst,
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virResctrlAllocPerTypePtr src)
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@@ -1141,7 +1190,6 @@ virResctrlAllocGetUnused(virResctrlInfoPtr resctrl)
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virResctrlAllocPtr alloc = NULL;
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struct dirent *ent = NULL;
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DIR *dirp = NULL;
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- char *schemata = NULL;
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int rv = -1;
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if (virResctrlInfoIsEmpty(resctrl)) {
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@@ -1154,22 +1202,12 @@ virResctrlAllocGetUnused(virResctrlInfoPtr resctrl)
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if (!ret)
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return NULL;
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- if (virFileReadValueString(&schemata,
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- SYSFS_RESCTRL_PATH
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- "/schemata") < 0) {
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- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
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- _("Could not read schemata file for the default group"));
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- goto error;
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- }
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-
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- alloc = virResctrlAllocNew();
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+ alloc = virResctrlAllocGetDefault(resctrl);
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if (!alloc)
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goto error;
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- if (virResctrlAllocParse(resctrl, alloc, schemata) < 0)
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- goto error;
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-
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virResctrlAllocSubtract(ret, alloc);
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+ virObjectUnref(alloc);
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if (virDirOpen(&dirp, SYSFS_RESCTRL_PATH) < 0)
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goto error;
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@@ -1178,11 +1216,7 @@ virResctrlAllocGetUnused(virResctrlInfoPtr resctrl)
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if (STREQ(ent->d_name, "info"))
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continue;
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- VIR_FREE(schemata);
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- rv = virFileReadValueString(&schemata,
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- SYSFS_RESCTRL_PATH
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- "/%s/schemata",
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- ent->d_name);
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+ rv = virResctrlAllocGetGroup(resctrl, ent->d_name, &alloc);
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if (rv == -2)
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continue;
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@@ -1193,15 +1227,9 @@ virResctrlAllocGetUnused(virResctrlInfoPtr resctrl)
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goto error;
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}
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- virObjectUnref(alloc);
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- alloc = virResctrlAllocNew();
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- if (!alloc)
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- goto error;
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-
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- if (virResctrlAllocParse(resctrl, alloc, schemata) < 0)
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- goto error;
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-
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virResctrlAllocSubtract(ret, alloc);
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+ virObjectUnref(alloc);
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+ alloc = NULL;
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}
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if (rv < 0)
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goto error;
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@@ -1209,7 +1237,6 @@ virResctrlAllocGetUnused(virResctrlInfoPtr resctrl)
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cleanup:
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virObjectUnref(alloc);
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VIR_DIR_CLOSE(dirp);
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- VIR_FREE(schemata);
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return ret;
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error:
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--
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2.16.1
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