[libvirt] [PATCH 22/47] vircgroup: extract virCgroupV1GetBlkioIoServiced
Fabiano Fidêncio
fidencio at redhat.com
Thu Sep 20 06:30:01 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 | 87 ++--------------------------------
> src/util/vircgroupbackend.h | 8 ++++
> src/util/vircgroupv1.c | 94 +++++++++++++++++++++++++++++++++++++
> 3 files changed, 105 insertions(+), 84 deletions(-)
>
> diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c
> index cb9f03d488..a9b67f7d53 100644
> --- a/src/util/vircgroup.c
> +++ b/src/util/vircgroup.c
> @@ -1313,90 +1313,9 @@ virCgroupGetBlkioIoServiced(virCgroupPtr group,
> long long *requests_read,
> long long *requests_write)
> {
> - long long stats_val;
> - VIR_AUTOFREE(char *) str1 = NULL;
> - VIR_AUTOFREE(char *) str2 = 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
> - };
> -
> - *bytes_read = 0;
> - *bytes_write = 0;
> - *requests_read = 0;
> - *requests_write = 0;
> -
> - 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;
> -
> - /* sum up all entries of the same kind, from all devices */
> - for (i = 0; i < ARRAY_CARDINALITY(value_names); i++) {
> - p1 = str1;
> - p2 = str2;
> -
> - while ((p1 = strstr(p1, value_names[i]))) {
> - p1 += strlen(value_names[i]);
> - if (virStrToLong_ll(p1, &p1, 10, &stats_val) < 0) {
> - virReportError(VIR_ERR_INTERNAL_ERROR,
> - _("Cannot parse byte %sstat '%s'"),
> - value_names[i],
> - p1);
> - return -1;
> - }
> -
> - if (stats_val < 0 ||
> - (stats_val > 0 && *bytes_ptrs[i] > (LLONG_MAX -
> stats_val)))
> - {
> - virReportError(VIR_ERR_OVERFLOW,
> - _("Sum of byte %sstat overflows"),
> - value_names[i]);
> - return -1;
> - }
> - *bytes_ptrs[i] += stats_val;
> - }
> -
> - while ((p2 = strstr(p2, value_names[i]))) {
> - p2 += strlen(value_names[i]);
> - if (virStrToLong_ll(p2, &p2, 10, &stats_val) < 0) {
> - virReportError(VIR_ERR_INTERNAL_ERROR,
> - _("Cannot parse %srequest stat '%s'"),
> - value_names[i],
> - p2);
> - return -1;
> - }
> -
> - if (stats_val < 0 ||
> - (stats_val > 0 && *requests_ptrs[i] > (LLONG_MAX -
> stats_val)))
> - {
> - virReportError(VIR_ERR_OVERFLOW,
> - _("Sum of %srequest stat overflows"),
> - value_names[i]);
> - return -1;
> - }
> - *requests_ptrs[i] += stats_val;
> - }
> - }
> -
> - return 0;
> + VIR_CGROUP_BACKEND_CALL(group, getBlkioIoServiced, -1,
> + bytes_read, bytes_write,
> + requests_read, requests_write);
> }
>
>
> diff --git a/src/util/vircgroupbackend.h b/src/util/vircgroupbackend.h
> index 2c42227297..90584947fd 100644
> --- a/src/util/vircgroupbackend.h
> +++ b/src/util/vircgroupbackend.h
> @@ -137,6 +137,13 @@ typedef int
> (*virCgroupGetBlkioWeightCB)(virCgroupPtr group,
> unsigned int *weight);
>
> +typedef int
> +(*virCgroupGetBlkioIoServicedCB)(virCgroupPtr group,
> + long long *bytes_read,
> + long long *bytes_write,
> + long long *requests_read,
> + long long *requests_write);
> +
> struct _virCgroupBackend {
> virCgroupBackendType type;
>
> @@ -163,6 +170,7 @@ struct _virCgroupBackend {
> /* Optional cgroup controller specific callbacks. */
> virCgroupSetBlkioWeightCB setBlkioWeight;
> virCgroupGetBlkioWeightCB getBlkioWeight;
> + virCgroupGetBlkioIoServicedCB getBlkioIoServiced;
> };
> typedef struct _virCgroupBackend virCgroupBackend;
> typedef virCgroupBackend *virCgroupBackendPtr;
> diff --git a/src/util/vircgroupv1.c b/src/util/vircgroupv1.c
> index 380a310589..4b9c03830c 100644
> --- a/src/util/vircgroupv1.c
> +++ b/src/util/vircgroupv1.c
> @@ -956,6 +956,99 @@ virCgroupV1GetBlkioWeight(virCgroupPtr group,
> }
>
>
> +static int
> +virCgroupV1GetBlkioIoServiced(virCgroupPtr group,
> + long long *bytes_read,
> + long long *bytes_write,
> + long long *requests_read,
> + long long *requests_write)
> +{
> + long long stats_val;
> + VIR_AUTOFREE(char *) str1 = NULL;
> + VIR_AUTOFREE(char *) str2 = 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
> + };
> +
> + *bytes_read = 0;
> + *bytes_write = 0;
> + *requests_read = 0;
> + *requests_write = 0;
> +
> + 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;
> +
> + /* sum up all entries of the same kind, from all devices */
> + for (i = 0; i < ARRAY_CARDINALITY(value_names); i++) {
> + p1 = str1;
> + p2 = str2;
> +
> + while ((p1 = strstr(p1, value_names[i]))) {
> + p1 += strlen(value_names[i]);
> + if (virStrToLong_ll(p1, &p1, 10, &stats_val) < 0) {
> + virReportError(VIR_ERR_INTERNAL_ERROR,
> + _("Cannot parse byte %sstat '%s'"),
> + value_names[i],
> + p1);
> + return -1;
> + }
> +
> + if (stats_val < 0 ||
> + (stats_val > 0 && *bytes_ptrs[i] > (LLONG_MAX -
> stats_val)))
> + {
> + virReportError(VIR_ERR_OVERFLOW,
> + _("Sum of byte %sstat overflows"),
> + value_names[i]);
> + return -1;
> + }
> + *bytes_ptrs[i] += stats_val;
> + }
> +
> + while ((p2 = strstr(p2, value_names[i]))) {
> + p2 += strlen(value_names[i]);
> + if (virStrToLong_ll(p2, &p2, 10, &stats_val) < 0) {
> + virReportError(VIR_ERR_INTERNAL_ERROR,
> + _("Cannot parse %srequest stat '%s'"),
> + value_names[i],
> + p2);
> + return -1;
> + }
> +
> + if (stats_val < 0 ||
> + (stats_val > 0 && *requests_ptrs[i] > (LLONG_MAX -
> stats_val)))
> + {
> + virReportError(VIR_ERR_OVERFLOW,
> + _("Sum of %srequest stat overflows"),
> + value_names[i]);
> + return -1;
> + }
> + *requests_ptrs[i] += stats_val;
> + }
> + }
> +
> + return 0;
> +}
> +
> +
> virCgroupBackend virCgroupV1Backend = {
> .type = VIR_CGROUP_BACKEND_TYPE_V1,
>
> @@ -980,6 +1073,7 @@ virCgroupBackend virCgroupV1Backend = {
>
> .setBlkioWeight = virCgroupV1SetBlkioWeight,
> .getBlkioWeight = virCgroupV1GetBlkioWeight,
> + .getBlkioIoServiced = virCgroupV1GetBlkioIoServiced,
> };
>
>
> --
> 2.17.1
>
> --
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> libvir-list at redhat.com
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>
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