From 518ed664601680039546889ea3ebb9a957f26e16 Mon Sep 17 00:00:00 2001 Message-Id: <518ed664601680039546889ea3ebb9a957f26e16@dist-git> From: Pavel Hrdina Date: Mon, 1 Jul 2019 17:07:48 +0200 Subject: [PATCH] vircgroup: introduce virCgroupV2(Set|Get)CpuCfsQuota MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Pavel Hrdina (cherry picked from commit 8e2c887ffa552b59a3dd80fa73ee60791c960565) Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1689297 Signed-off-by: Pavel Hrdina Message-Id: <7fe344c65f7394026a2d9feb45920cd177f5f71c.1561993100.git.phrdina@redhat.com> Reviewed-by: Ján Tomko --- src/util/vircgroupv2.c | 52 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) diff --git a/src/util/vircgroupv2.c b/src/util/vircgroupv2.c index 876785e4e1..a0a7e55493 100644 --- a/src/util/vircgroupv2.c +++ b/src/util/vircgroupv2.c @@ -1391,6 +1391,56 @@ virCgroupV2GetCpuCfsPeriod(virCgroupPtr group, } +static int +virCgroupV2SetCpuCfsQuota(virCgroupPtr group, + long long cfs_quota) +{ + /* The cfs_quota should be greater or equal than 1ms */ + if (cfs_quota >= 0 && + (cfs_quota < 1000 || + cfs_quota > ULLONG_MAX / 1000)) { + virReportError(VIR_ERR_INVALID_ARG, + _("cfs_quota '%lld' must be in range (1000, %llu)"), + cfs_quota, ULLONG_MAX / 1000); + return -1; + } + + if (cfs_quota == ULLONG_MAX / 1000) { + return virCgroupSetValueStr(group, + VIR_CGROUP_CONTROLLER_CPU, + "cpu.max", "max"); + } + + return virCgroupSetValueI64(group, + VIR_CGROUP_CONTROLLER_CPU, + "cpu.max", cfs_quota); +} + + +static int +virCgroupV2GetCpuCfsQuota(virCgroupPtr group, + long long *cfs_quota) +{ + VIR_AUTOFREE(char *) str = NULL; + + if (virCgroupGetValueStr(group, VIR_CGROUP_CONTROLLER_CPU, + "cpu.max", &str) < 0) { + return -1; + } + + if (STREQLEN(str, "max", 3)) + *cfs_quota = ULLONG_MAX / 1000; + + if (virStrToLong_ll(str, NULL, 10, cfs_quota) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("Failed to parse value '%s' from cpu.max."), str); + return -1; + } + + return 0; +} + + virCgroupBackend virCgroupV2Backend = { .type = VIR_CGROUP_BACKEND_TYPE_V2, @@ -1443,6 +1493,8 @@ virCgroupBackend virCgroupV2Backend = { .getCpuShares = virCgroupV2GetCpuShares, .setCpuCfsPeriod = virCgroupV2SetCpuCfsPeriod, .getCpuCfsPeriod = virCgroupV2GetCpuCfsPeriod, + .setCpuCfsQuota = virCgroupV2SetCpuCfsQuota, + .getCpuCfsQuota = virCgroupV2GetCpuCfsQuota, }; -- 2.22.0