[libvirt] [PATCH 23/47] vircgroup: extract virCgroupV1GetBlkioIoDeviceServiced
Fabiano Fidêncio
fidencio at redhat.com
Thu Sep 20 06:30:04 UTC 2018
On Tue, Sep 18, 2018 at 5:45 PM, Pavel Hrdina <phrdina at redhat.com> wrote:
> Signed-off-by: Pavel Hrdina <phrdina at redhat.com>
>
Reviewed-by: Fabiano Fidêncio <fidencio at redhat.com>
> ---
> src/util/vircgroup.c | 83 ++--------------------------------
> src/util/vircgroupbackend.h | 9 ++++
> src/util/vircgrouppriv.h | 2 +
> src/util/vircgroupv1.c | 89 +++++++++++++++++++++++++++++++++++++
> 4 files changed, 104 insertions(+), 79 deletions(-)
>
> diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c
> index a9b67f7d53..0d93860df6 100644
> --- a/src/util/vircgroup.c
> +++ b/src/util/vircgroup.c
> @@ -411,7 +411,7 @@ virCgroupDetect(virCgroupPtr group,
> }
>
>
> -static char *
> +char *
> virCgroupGetBlockDevString(const char *path)
> {
> char *ret = NULL;
> @@ -1339,84 +1339,9 @@ virCgroupGetBlkioIoDeviceServiced(virCgroupPtr
> group,
> long long *requests_read,
> long long *requests_write)
> {
> - VIR_AUTOFREE(char *) str1 = NULL;
> - VIR_AUTOFREE(char *) str2 = NULL;
> - VIR_AUTOFREE(char *) str3 = NULL;
> - char *p1 = NULL;
> - char *p2 = NULL;
> - size_t i;
> -
> - const char *value_names[] = {
> - "Read ",
> - "Write "
> - };
> - long long *bytes_ptrs[] = {
> - bytes_read,
> - bytes_write
> - };
> - long long *requests_ptrs[] = {
> - requests_read,
> - requests_write
> - };
> -
> - if (virCgroupGetValueStr(group,
> - VIR_CGROUP_CONTROLLER_BLKIO,
> - "blkio.throttle.io_service_bytes", &str1) <
> 0)
> - return -1;
> -
> - if (virCgroupGetValueStr(group,
> - VIR_CGROUP_CONTROLLER_BLKIO,
> - "blkio.throttle.io_serviced", &str2) < 0)
> - return -1;
> -
> - if (!(str3 = virCgroupGetBlockDevString(path)))
> - return -1;
> -
> - if (!(p1 = strstr(str1, str3))) {
> - virReportError(VIR_ERR_INTERNAL_ERROR,
> - _("Cannot find byte stats for block device '%s'"),
> - str3);
> - return -1;
> - }
> -
> - if (!(p2 = strstr(str2, str3))) {
> - virReportError(VIR_ERR_INTERNAL_ERROR,
> - _("Cannot find request stats for block device
> '%s'"),
> - str3);
> - return -1;
> - }
> -
> - for (i = 0; i < ARRAY_CARDINALITY(value_names); i++) {
> - if (!(p1 = strstr(p1, value_names[i]))) {
> - virReportError(VIR_ERR_INTERNAL_ERROR,
> - _("Cannot find byte %sstats for block device
> '%s'"),
> - value_names[i], str3);
> - return -1;
> - }
> -
> - if (virStrToLong_ll(p1 + strlen(value_names[i]), &p1, 10,
> bytes_ptrs[i]) < 0) {
> - virReportError(VIR_ERR_INTERNAL_ERROR,
> - _("Cannot parse %sstat '%s'"),
> - value_names[i], p1 + strlen(value_names[i]));
> - return -1;
> - }
> -
> - if (!(p2 = strstr(p2, value_names[i]))) {
> - virReportError(VIR_ERR_INTERNAL_ERROR,
> - _("Cannot find request %sstats for block
> device '%s'"),
> - value_names[i], str3);
> - return -1;
> - }
> -
> - if (virStrToLong_ll(p2 + strlen(value_names[i]), &p2, 10,
> requests_ptrs[i]) < 0) {
> - virReportError(VIR_ERR_INTERNAL_ERROR,
> - _("Cannot parse %sstat '%s'"),
> - value_names[i], p2 + strlen(value_names[i]));
> - return -1;
> - }
> - }
> -
> - return 0;
> + VIR_CGROUP_BACKEND_CALL(group, getBlkioIoDeviceServiced, -1,
> + path, bytes_read, bytes_write,
> + requests_read, requests_write);
> }
>
>
> diff --git a/src/util/vircgroupbackend.h b/src/util/vircgroupbackend.h
> index 90584947fd..bd78c5b937 100644
> --- a/src/util/vircgroupbackend.h
> +++ b/src/util/vircgroupbackend.h
> @@ -144,6 +144,14 @@ typedef int
> long long *requests_read,
> long long *requests_write);
>
> +typedef int
> +(*virCgroupGetBlkioIoDeviceServicedCB)(virCgroupPtr group,
> + const char *path,
> + long long *bytes_read,
> + long long *bytes_write,
> + long long *requests_read,
> + long long *requests_write);
> +
> struct _virCgroupBackend {
> virCgroupBackendType type;
>
> @@ -171,6 +179,7 @@ struct _virCgroupBackend {
> virCgroupSetBlkioWeightCB setBlkioWeight;
> virCgroupGetBlkioWeightCB getBlkioWeight;
> virCgroupGetBlkioIoServicedCB getBlkioIoServiced;
> + virCgroupGetBlkioIoDeviceServicedCB getBlkioIoDeviceServiced;
> };
> typedef struct _virCgroupBackend virCgroupBackend;
> typedef virCgroupBackend *virCgroupBackendPtr;
> diff --git a/src/util/vircgrouppriv.h b/src/util/vircgrouppriv.h
> index 01714370be..525c288a9a 100644
> --- a/src/util/vircgrouppriv.h
> +++ b/src/util/vircgrouppriv.h
> @@ -80,6 +80,8 @@ int virCgroupSetValueI64(virCgroupPtr group,
>
> int virCgroupPartitionEscape(char **path);
>
> +char *virCgroupGetBlockDevString(const char *path);
> +
> int virCgroupNewPartition(const char *path,
> bool create,
> int controllers,
> diff --git a/src/util/vircgroupv1.c b/src/util/vircgroupv1.c
> index 4b9c03830c..206318d436 100644
> --- a/src/util/vircgroupv1.c
> +++ b/src/util/vircgroupv1.c
> @@ -1049,6 +1049,94 @@ virCgroupV1GetBlkioIoServiced(virCgroupPtr group,
> }
>
>
> +static int
> +virCgroupV1GetBlkioIoDeviceServiced(virCgroupPtr group,
> + const char *path,
> + long long *bytes_read,
> + long long *bytes_write,
> + long long *requests_read,
> + long long *requests_write)
> +{
> + VIR_AUTOFREE(char *) str1 = NULL;
> + VIR_AUTOFREE(char *) str2 = NULL;
> + VIR_AUTOFREE(char *) str3 = NULL;
> + char *p1, *p2;
> + size_t i;
> +
> + const char *value_names[] = {
> + "Read ",
> + "Write "
> + };
> + long long *bytes_ptrs[] = {
> + bytes_read,
> + bytes_write
> + };
> + long long *requests_ptrs[] = {
> + requests_read,
> + requests_write
> + };
> +
> + if (virCgroupGetValueStr(group,
> + VIR_CGROUP_CONTROLLER_BLKIO,
> + "blkio.throttle.io_service_bytes", &str1) <
> 0)
> + return -1;
> +
> + if (virCgroupGetValueStr(group,
> + VIR_CGROUP_CONTROLLER_BLKIO,
> + "blkio.throttle.io_serviced", &str2) < 0)
> + return -1;
> +
> + if (!(str3 = virCgroupGetBlockDevString(path)))
> + return -1;
> +
> + if (!(p1 = strstr(str1, str3))) {
> + virReportError(VIR_ERR_INTERNAL_ERROR,
> + _("Cannot find byte stats for block device '%s'"),
> + str3);
> + return -1;
> + }
> +
> + if (!(p2 = strstr(str2, str3))) {
> + virReportError(VIR_ERR_INTERNAL_ERROR,
> + _("Cannot find request stats for block device
> '%s'"),
> + str3);
> + return -1;
> + }
> +
> + for (i = 0; i < ARRAY_CARDINALITY(value_names); i++) {
> + if (!(p1 = strstr(p1, value_names[i]))) {
> + virReportError(VIR_ERR_INTERNAL_ERROR,
> + _("Cannot find byte %sstats for block device
> '%s'"),
> + value_names[i], str3);
> + return -1;
> + }
> +
> + if (virStrToLong_ll(p1 + strlen(value_names[i]), &p1, 10,
> bytes_ptrs[i]) < 0) {
> + virReportError(VIR_ERR_INTERNAL_ERROR,
> + _("Cannot parse %sstat '%s'"),
> + value_names[i], p1 + strlen(value_names[i]));
> + return -1;
> + }
> +
> + if (!(p2 = strstr(p2, value_names[i]))) {
> + virReportError(VIR_ERR_INTERNAL_ERROR,
> + _("Cannot find request %sstats for block
> device '%s'"),
> + value_names[i], str3);
> + return -1;
> + }
> +
> + if (virStrToLong_ll(p2 + strlen(value_names[i]), &p2, 10,
> requests_ptrs[i]) < 0) {
> + virReportError(VIR_ERR_INTERNAL_ERROR,
> + _("Cannot parse %sstat '%s'"),
> + value_names[i], p2 + strlen(value_names[i]));
> + return -1;
> + }
> + }
> +
> + return 0;
> +}
> +
> +
> virCgroupBackend virCgroupV1Backend = {
> .type = VIR_CGROUP_BACKEND_TYPE_V1,
>
> @@ -1074,6 +1162,7 @@ virCgroupBackend virCgroupV1Backend = {
> .setBlkioWeight = virCgroupV1SetBlkioWeight,
> .getBlkioWeight = virCgroupV1GetBlkioWeight,
> .getBlkioIoServiced = virCgroupV1GetBlkioIoServiced,
> + .getBlkioIoDeviceServiced = virCgroupV1GetBlkioIoDeviceServiced,
> };
>
>
> --
> 2.17.1
>
> --
> libvir-list mailing list
> libvir-list at redhat.com
> https://www.redhat.com/mailman/listinfo/libvir-list
>
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