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Diffstat (limited to 'src/core/cgroup.c')
-rw-r--r--src/core/cgroup.c235
1 files changed, 137 insertions, 98 deletions
diff --git a/src/core/cgroup.c b/src/core/cgroup.c
index b0e7be082c..ddc4f69ebe 100644
--- a/src/core/cgroup.c
+++ b/src/core/cgroup.c
@@ -358,6 +358,124 @@ fail:
return -errno;
}
+static uint64_t cgroup_context_io_weight(CGroupContext *c, ManagerState state)
+{
+ if (IN_SET(state, MANAGER_STARTING, MANAGER_INITIALIZING) &&
+ c->startup_io_weight != CGROUP_WEIGHT_INVALID)
+ return c->startup_io_weight;
+ else if (c->io_weight != CGROUP_WEIGHT_INVALID)
+ return c->io_weight;
+ else
+ return CGROUP_WEIGHT_DEFAULT;
+}
+
+static uint64_t cgroup_context_blkio_weight(CGroupContext *c, ManagerState state)
+{
+ if (IN_SET(state, MANAGER_STARTING, MANAGER_INITIALIZING) &&
+ c->startup_blockio_weight != CGROUP_BLKIO_WEIGHT_INVALID)
+ return c->startup_blockio_weight;
+ else if (c->blockio_weight != CGROUP_BLKIO_WEIGHT_INVALID)
+ return c->blockio_weight;
+ else
+ return CGROUP_BLKIO_WEIGHT_DEFAULT;
+}
+
+static void cgroup_apply_io_device_weight(const char *path, const char *dev_path, uint64_t io_weight)
+{
+ char buf[DECIMAL_STR_MAX(dev_t)*2+2+DECIMAL_STR_MAX(uint64_t)+1];
+ dev_t dev;
+ int r;
+
+ r = lookup_block_device(dev_path, &dev);
+ if (r < 0)
+ return;
+
+ xsprintf(buf, "%u:%u %" PRIu64 "\n", major(dev), minor(dev), io_weight);
+ r = cg_set_attribute("io", path, "io.weight", buf);
+ if (r < 0)
+ log_full_errno(IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
+ "Failed to set io.weight on %s: %m", path);
+}
+
+static void cgroup_apply_blkio_device_weight(const char *path, const char *dev_path, uint64_t blkio_weight)
+{
+ char buf[DECIMAL_STR_MAX(dev_t)*2+2+DECIMAL_STR_MAX(uint64_t)+1];
+ dev_t dev;
+ int r;
+
+ r = lookup_block_device(dev_path, &dev);
+ if (r < 0)
+ return;
+
+ xsprintf(buf, "%u:%u %" PRIu64 "\n", major(dev), minor(dev), blkio_weight);
+ r = cg_set_attribute("blkio", path, "blkio.weight_device", buf);
+ if (r < 0)
+ log_full_errno(IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
+ "Failed to set blkio.weight_device on %s: %m", path);
+}
+
+static unsigned cgroup_apply_io_device_limit(const char *path, const char *dev_path, uint64_t *limits)
+{
+ char limit_bufs[_CGROUP_IO_LIMIT_TYPE_MAX][DECIMAL_STR_MAX(uint64_t)];
+ char buf[DECIMAL_STR_MAX(dev_t)*2+2+(6+DECIMAL_STR_MAX(uint64_t)+1)*4];
+ CGroupIOLimitType type;
+ dev_t dev;
+ unsigned n = 0;
+ int r;
+
+ r = lookup_block_device(dev_path, &dev);
+ if (r < 0)
+ return 0;
+
+ for (type = 0; type < _CGROUP_IO_LIMIT_TYPE_MAX; type++) {
+ if (limits[type] != cgroup_io_limit_defaults[type]) {
+ xsprintf(limit_bufs[type], "%" PRIu64, limits[type]);
+ n++;
+ } else {
+ xsprintf(limit_bufs[type], "%s", limits[type] == CGROUP_LIMIT_MAX ? "max" : "0");
+ }
+ }
+
+ xsprintf(buf, "%u:%u rbps=%s wbps=%s riops=%s wiops=%s\n", major(dev), minor(dev),
+ limit_bufs[CGROUP_IO_RBPS_MAX], limit_bufs[CGROUP_IO_WBPS_MAX],
+ limit_bufs[CGROUP_IO_RIOPS_MAX], limit_bufs[CGROUP_IO_WIOPS_MAX]);
+ r = cg_set_attribute("io", path, "io.max", buf);
+ if (r < 0)
+ log_full_errno(IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
+ "Failed to set io.max on %s: %m", path);
+ return n;
+}
+
+static unsigned cgroup_apply_blkio_device_limit(const char *path, const char *dev_path, uint64_t rbps, uint64_t wbps)
+{
+ char buf[DECIMAL_STR_MAX(dev_t)*2+2+DECIMAL_STR_MAX(uint64_t)+1];
+ dev_t dev;
+ unsigned n = 0;
+ int r;
+
+ r = lookup_block_device(dev_path, &dev);
+ if (r < 0)
+ return 0;
+
+ if (rbps != CGROUP_LIMIT_MAX)
+ n++;
+ sprintf(buf, "%u:%u %" PRIu64 "\n", major(dev), minor(dev), rbps);
+ r = cg_set_attribute("blkio", path, "blkio.throttle.read_bps_device", buf);
+ if (r < 0)
+ log_full_errno(IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
+ "Failed to set blkio.throttle.read_bps_device on %s: %m", path);
+
+ if (wbps != CGROUP_LIMIT_MAX)
+ n++;
+ sprintf(buf, "%u:%u %" PRIu64 "\n", major(dev), minor(dev), wbps);
+ r = cg_set_attribute("blkio", path, "blkio.throttle.write_bps_device", buf);
+ if (r < 0)
+ log_full_errno(IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
+ "Failed to set blkio.throttle.write_bps_device on %s: %m", path);
+
+ return n;
+}
+
void cgroup_context_apply(CGroupContext *c, CGroupMask mask, const char *path, ManagerState state) {
bool is_root;
int r;
@@ -407,19 +525,14 @@ void cgroup_context_apply(CGroupContext *c, CGroupMask mask, const char *path, M
}
if (mask & CGROUP_MASK_IO) {
- CGroupIODeviceWeight *w;
CGroupIODeviceLimit *l, *next;
if (!is_root) {
- char buf[MAX(8+DECIMAL_STR_MAX(uint64_t)+1,
- DECIMAL_STR_MAX(dev_t)*2+2+DECIMAL_STR_MAX(uint64_t)+1)];
- uint64_t weight = CGROUP_WEIGHT_DEFAULT;
+ char buf[8+DECIMAL_STR_MAX(uint64_t)+1];
+ uint64_t weight;
+ CGroupIODeviceWeight *w;
- if (IN_SET(state, MANAGER_STARTING, MANAGER_INITIALIZING) &&
- c->startup_io_weight != CGROUP_WEIGHT_INVALID)
- weight = c->startup_io_weight;
- else if (c->io_weight != CGROUP_WEIGHT_INVALID)
- weight = c->io_weight;
+ weight = cgroup_context_io_weight(c, state);
xsprintf(buf, "default %" PRIu64 "\n", weight);
r = cg_set_attribute("io", path, "io.weight", buf);
@@ -428,115 +541,41 @@ void cgroup_context_apply(CGroupContext *c, CGroupMask mask, const char *path, M
"Failed to set io.weight on %s: %m", path);
/* FIXME: no way to reset this list */
- LIST_FOREACH(device_weights, w, c->io_device_weights) {
- dev_t dev;
-
- r = lookup_block_device(w->path, &dev);
- if (r < 0)
- continue;
-
- xsprintf(buf, "%u:%u %" PRIu64 "\n", major(dev), minor(dev), w->weight);
- r = cg_set_attribute("io", path, "io.weight", buf);
- if (r < 0)
- log_full_errno(IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
- "Failed to set io.weight on %s: %m", path);
- }
+ LIST_FOREACH(device_weights, w, c->io_device_weights)
+ cgroup_apply_io_device_weight(path, w->path, w->weight);
}
+ /* Apply limits and free ones without config. */
LIST_FOREACH_SAFE(device_limits, l, next, c->io_device_limits) {
- char limit_bufs[_CGROUP_IO_LIMIT_TYPE_MAX][DECIMAL_STR_MAX(uint64_t)];
- char buf[DECIMAL_STR_MAX(dev_t)*2+2+(6+DECIMAL_STR_MAX(uint64_t)+1)*4];
- CGroupIOLimitType type;
- dev_t dev;
- unsigned n = 0;
-
- r = lookup_block_device(l->path, &dev);
- if (r < 0)
- continue;
-
- for (type = 0; type < _CGROUP_IO_LIMIT_TYPE_MAX; type++) {
- if (l->limits[type] != cgroup_io_limit_defaults[type]) {
- xsprintf(limit_bufs[type], "%" PRIu64, l->limits[type]);
- n++;
- } else {
- xsprintf(limit_bufs[type], "%s",
- l->limits[type] == CGROUP_LIMIT_MAX ? "max" : "0");
- }
- }
-
- xsprintf(buf, "%u:%u rbps=%s wbps=%s riops=%s wiops=%s\n", major(dev), minor(dev),
- limit_bufs[CGROUP_IO_RBPS_MAX], limit_bufs[CGROUP_IO_WBPS_MAX],
- limit_bufs[CGROUP_IO_RIOPS_MAX], limit_bufs[CGROUP_IO_WIOPS_MAX]);
- r = cg_set_attribute("io", path, "io.max", buf);
- if (r < 0)
- log_full_errno(IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
- "Failed to set io.max on %s: %m", path);
-
- /* If @l contained no config, we just cleared the kernel
- counterpart too. No reason to keep @l around. */
- if (!n)
+ if (!cgroup_apply_io_device_limit(path, l->path, l->limits))
cgroup_context_free_io_device_limit(c, l);
}
}
if (mask & CGROUP_MASK_BLKIO) {
- char buf[MAX(DECIMAL_STR_MAX(uint64_t)+1,
- DECIMAL_STR_MAX(dev_t)*2+2+DECIMAL_STR_MAX(uint64_t)+1)];
- CGroupBlockIODeviceWeight *w;
CGroupBlockIODeviceBandwidth *b, *next;
if (!is_root) {
- sprintf(buf, "%" PRIu64 "\n",
- IN_SET(state, MANAGER_STARTING, MANAGER_INITIALIZING) && c->startup_blockio_weight != CGROUP_BLKIO_WEIGHT_INVALID ? c->startup_blockio_weight :
- c->blockio_weight != CGROUP_BLKIO_WEIGHT_INVALID ? c->blockio_weight : CGROUP_BLKIO_WEIGHT_DEFAULT);
+ char buf[DECIMAL_STR_MAX(uint64_t)+1];
+ uint64_t weight;
+ CGroupBlockIODeviceWeight *w;
+
+ weight = cgroup_context_blkio_weight(c, state);
+
+ xsprintf(buf, "%" PRIu64 "\n", weight);
r = cg_set_attribute("blkio", path, "blkio.weight", buf);
if (r < 0)
log_full_errno(IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
"Failed to set blkio.weight on %s: %m", path);
/* FIXME: no way to reset this list */
- LIST_FOREACH(device_weights, w, c->blockio_device_weights) {
- dev_t dev;
-
- r = lookup_block_device(w->path, &dev);
- if (r < 0)
- continue;
-
- sprintf(buf, "%u:%u %" PRIu64 "\n", major(dev), minor(dev), w->weight);
- r = cg_set_attribute("blkio", path, "blkio.weight_device", buf);
- if (r < 0)
- log_full_errno(IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
- "Failed to set blkio.weight_device on %s: %m", path);
- }
+ LIST_FOREACH(device_weights, w, c->blockio_device_weights)
+ cgroup_apply_blkio_device_weight(path, w->path, w->weight);
}
+ /* Apply limits and free ones without config. */
LIST_FOREACH_SAFE(device_bandwidths, b, next, c->blockio_device_bandwidths) {
- dev_t dev;
- unsigned n = 0;
-
- r = lookup_block_device(b->path, &dev);
- if (r < 0)
- continue;
-
- if (b->rbps != CGROUP_LIMIT_MAX)
- n++;
- sprintf(buf, "%u:%u %" PRIu64 "\n", major(dev), minor(dev), b->rbps);
- r = cg_set_attribute("blkio", path, "blkio.throttle.read_bps_device", buf);
- if (r < 0)
- log_full_errno(IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
- "Failed to set blkio.throttle.read_bps_device on %s: %m", path);
-
- if (b->wbps != CGROUP_LIMIT_MAX)
- n++;
- sprintf(buf, "%u:%u %" PRIu64 "\n", major(dev), minor(dev), b->wbps);
- r = cg_set_attribute("blkio", path, "blkio.throttle.write_bps_device", buf);
- if (r < 0)
- log_full_errno(IN_SET(r, -ENOENT, -EROFS, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
- "Failed to set blkio.throttle.write_bps_device on %s: %m", path);
-
- /* If @b contained no config, we just cleared the kernel
- * counterpart too. No reason to keep @l around. */
- if (!n)
+ if (!cgroup_apply_blkio_device_limit(path, b->path, b->rbps, b->wbps))
cgroup_context_free_blockio_device_bandwidth(c, b);
}
}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-12 13:51:37 +0000