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util: Add helpers for getting resctrl group allocs

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Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
This commit is contained in:
Martin Kletzander 2018-01-25 17:03:43 +01:00
parent f46d6e22f2
commit f6199295a9
1 changed files with 54 additions and 27 deletions
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81
src/util/virresctrl.c
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@ -1041,6 +1041,55 @@ virResctrlAllocParse(virResctrlInfoPtr resctrl,
} }
static int
virResctrlAllocGetGroup(virResctrlInfoPtr resctrl,
const char *groupname,
virResctrlAllocPtr *alloc)
{
char *schemata = NULL;
int rv = virFileReadValueString(&schemata,
SYSFS_RESCTRL_PATH
"/%s/schemata",
groupname);
*alloc = NULL;
if (rv < 0)
return rv;
*alloc = virResctrlAllocNew();
if (!*alloc)
goto error;
if (virResctrlAllocParse(resctrl, *alloc, schemata) < 0)
goto error;
VIR_FREE(schemata);
return 0;
error:
VIR_FREE(schemata);
virObjectUnref(*alloc);
*alloc = NULL;
return -1;
}
static virResctrlAllocPtr
virResctrlAllocGetDefault(virResctrlInfoPtr resctrl)
{
virResctrlAllocPtr ret = NULL;
int rv = virResctrlAllocGetGroup(resctrl, ".", &ret);
if (rv == -2) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Could not read schemata file for the default group"));
}
return ret;
}
static void static void
virResctrlAllocSubtractPerType(virResctrlAllocPerTypePtr dst, virResctrlAllocSubtractPerType(virResctrlAllocPerTypePtr dst,
virResctrlAllocPerTypePtr src) virResctrlAllocPerTypePtr src)
@ -1141,7 +1190,6 @@ virResctrlAllocGetUnused(virResctrlInfoPtr resctrl)
virResctrlAllocPtr alloc = NULL; virResctrlAllocPtr alloc = NULL;
struct dirent *ent = NULL; struct dirent *ent = NULL;
DIR *dirp = NULL; DIR *dirp = NULL;
char *schemata = NULL;
int rv = -1; int rv = -1;
if (virResctrlInfoIsEmpty(resctrl)) { if (virResctrlInfoIsEmpty(resctrl)) {
@ -1154,22 +1202,12 @@ virResctrlAllocGetUnused(virResctrlInfoPtr resctrl)
if (!ret) if (!ret)
return NULL; return NULL;
if (virFileReadValueString(&schemata, alloc = virResctrlAllocGetDefault(resctrl);
SYSFS_RESCTRL_PATH
"/schemata") < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Could not read schemata file for the default group"));
goto error;
}
alloc = virResctrlAllocNew();
if (!alloc) if (!alloc)
goto error; goto error;
if (virResctrlAllocParse(resctrl, alloc, schemata) < 0)
goto error;
virResctrlAllocSubtract(ret, alloc); virResctrlAllocSubtract(ret, alloc);
virObjectUnref(alloc);
if (virDirOpen(&dirp, SYSFS_RESCTRL_PATH) < 0) if (virDirOpen(&dirp, SYSFS_RESCTRL_PATH) < 0)
goto error; goto error;
@ -1178,11 +1216,7 @@ virResctrlAllocGetUnused(virResctrlInfoPtr resctrl)
if (STREQ(ent->d_name, "info")) if (STREQ(ent->d_name, "info"))
continue; continue;
VIR_FREE(schemata); rv = virResctrlAllocGetGroup(resctrl, ent->d_name, &alloc);
rv = virFileReadValueString(&schemata,
SYSFS_RESCTRL_PATH
"/%s/schemata",
ent->d_name);
if (rv == -2) if (rv == -2)
continue; continue;
@ -1193,15 +1227,9 @@ virResctrlAllocGetUnused(virResctrlInfoPtr resctrl)
goto error; goto error;
} }
virObjectUnref(alloc);
alloc = virResctrlAllocNew();
if (!alloc)
goto error;
if (virResctrlAllocParse(resctrl, alloc, schemata) < 0)
goto error;
virResctrlAllocSubtract(ret, alloc); virResctrlAllocSubtract(ret, alloc);
virObjectUnref(alloc);
alloc = NULL;
} }
if (rv < 0) if (rv < 0)
goto error; goto error;
@ -1209,7 +1237,6 @@ virResctrlAllocGetUnused(virResctrlInfoPtr resctrl)
cleanup: cleanup:
virObjectUnref(alloc); virObjectUnref(alloc);
VIR_DIR_CLOSE(dirp); VIR_DIR_CLOSE(dirp);
VIR_FREE(schemata);
return ret; return ret;
error: error: