From 1aeab12b19df295dbce1d422d9ee176a332aa800 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Fri, 15 Aug 2014 18:14:37 +0200 Subject: [PATCH] cgroup: only generate warnings if actually writing to cgroup attributes failed --- src/core/cgroup.c | 30 ++++++++++++++++++++---------- 1 file changed, 20 insertions(+), 10 deletions(-) diff --git a/src/core/cgroup.c b/src/core/cgroup.c index 42bf09f03..9248cb523 100644 --- a/src/core/cgroup.c +++ b/src/core/cgroup.c @@ -199,7 +199,8 @@ static int whitelist_device(const char *path, const char *node, const char *acc) acc); r = cg_set_attribute("devices", path, "devices.allow", buf); - log_full(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, "Failed to set devices.allow on %s: %s", path, strerror(-r)); + if (r < 0) + log_full(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, "Failed to set devices.allow on %s: %s", path, strerror(-r)); return r; } @@ -270,7 +271,8 @@ static int whitelist_major(const char *path, const char *name, char type, const acc); r = cg_set_attribute("devices", path, "devices.allow", buf); - log_full(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, "Failed to set devices.allow on %s: %s", path, strerror(-r)); + if (r < 0) + log_full(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, "Failed to set devices.allow on %s: %s", path, strerror(-r)); } return 0; @@ -301,18 +303,21 @@ void cgroup_context_apply(CGroupContext *c, CGroupControllerMask mask, const cha state == MANAGER_STARTING && c->startup_cpu_shares != (unsigned long) -1 ? c->startup_cpu_shares : c->cpu_shares != (unsigned long) -1 ? c->cpu_shares : 1024); r = cg_set_attribute("cpu", path, "cpu.shares", buf); - log_full(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, "Failed to set cpu.shares on %s: %s", path, strerror(-r)); + if (r < 0) + log_full(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, "Failed to set cpu.shares on %s: %s", path, strerror(-r)); sprintf(buf, USEC_FMT "\n", CGROUP_CPU_QUOTA_PERIOD_USEC); r = cg_set_attribute("cpu", path, "cpu.cfs_period_us", buf); - log_full(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, "Failed to set cpu.cfs_period_us on %s: %s", path, strerror(-r)); + if (r < 0) + log_full(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, "Failed to set cpu.cfs_period_us on %s: %s", path, strerror(-r)); if (c->cpu_quota_per_sec_usec != USEC_INFINITY) { sprintf(buf, USEC_FMT "\n", c->cpu_quota_per_sec_usec * CGROUP_CPU_QUOTA_PERIOD_USEC / USEC_PER_SEC); r = cg_set_attribute("cpu", path, "cpu.cfs_quota_us", buf); } else r = cg_set_attribute("cpu", path, "cpu.cfs_quota_us", "-1"); - log_full(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, "Failed to set cpu.cfs_quota_us on %s: %s", path, strerror(-r)); + if (r < 0) + log_full(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, "Failed to set cpu.cfs_quota_us on %s: %s", path, strerror(-r)); } if (mask & CGROUP_BLKIO) { @@ -326,7 +331,8 @@ void cgroup_context_apply(CGroupContext *c, CGroupControllerMask mask, const cha sprintf(buf, "%lu\n", state == MANAGER_STARTING && c->startup_blockio_weight != (unsigned long) -1 ? c->startup_blockio_weight : c->blockio_weight != (unsigned long) -1 ? c->blockio_weight : 1000); r = cg_set_attribute("blkio", path, "blkio.weight", buf); - log_full(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, "Failed to set blkio.weight on %s: %s", path, strerror(-r)); + if (r < 0) + log_full(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, "Failed to set blkio.weight on %s: %s", path, strerror(-r)); /* FIXME: no way to reset this list */ LIST_FOREACH(device_weights, w, c->blockio_device_weights) { @@ -338,7 +344,8 @@ void cgroup_context_apply(CGroupContext *c, CGroupControllerMask mask, const cha sprintf(buf, "%u:%u %lu", major(dev), minor(dev), w->weight); r = cg_set_attribute("blkio", path, "blkio.weight_device", buf); - log_full(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, "Failed to set blkio.weight_device on %s: %s", path, strerror(-r)); + if (r < 0) + log_full(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, "Failed to set blkio.weight_device on %s: %s", path, strerror(-r)); } } @@ -355,7 +362,8 @@ void cgroup_context_apply(CGroupContext *c, CGroupControllerMask mask, const cha sprintf(buf, "%u:%u %" PRIu64 "\n", major(dev), minor(dev), b->bandwidth); r = cg_set_attribute("blkio", path, a, buf); - log_full(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, "Failed to set %s on %s: %s", a, path, strerror(-r)); + if (r < 0) + log_full(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, "Failed to set %s on %s: %s", a, path, strerror(-r)); } } @@ -368,7 +376,8 @@ void cgroup_context_apply(CGroupContext *c, CGroupControllerMask mask, const cha } else r = cg_set_attribute("memory", path, "memory.limit_in_bytes", "-1"); - log_full(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, "Failed to set memory.limit_in_bytes on %s: %s", path, strerror(-r)); + if (r < 0) + log_full(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, "Failed to set memory.limit_in_bytes on %s: %s", path, strerror(-r)); } if ((mask & CGROUP_DEVICE) && !is_root) { @@ -378,7 +387,8 @@ void cgroup_context_apply(CGroupContext *c, CGroupControllerMask mask, const cha r = cg_set_attribute("devices", path, "devices.deny", "a"); else r = cg_set_attribute("devices", path, "devices.allow", "a"); - log_full(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, "Failed to reset devices.list on %s: %s", path, strerror(-r)); + if (r < 0) + log_full(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, "Failed to reset devices.list on %s: %s", path, strerror(-r)); if (c->device_policy == CGROUP_CLOSED || (c->device_policy == CGROUP_AUTO && c->device_allow)) { -- 2.30.2