[libvirt] [PATCH 22/47] vircgroup: extract virCgroupV1GetBlkioIoServiced

Signed-off-by: Pavel Hrdina <phrdina(a)redhat.com&gt; --- 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