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| author | Chris Down <chris@chrisdown.name> | 2019-04-16 18:14:09 +0100 |
|---|---|---|
| committer | Chris Down <chris@chrisdown.name> | 2019-04-16 18:39:51 +0100 |
| commit | 6264b85e92aeddb74b8d8808a08c9eae8390a6a5 (patch) | |
| tree | 0fc7641f7766a4451e7bf76553f91ab259297f64 | |
| parent | ac9b17271fbe2a840796739c455183e3d89d9e21 (diff) | |
| download | systemd-6264b85e92aeddb74b8d8808a08c9eae8390a6a5.tar.gz | |
cgroup: Create UNIT_DEFINE_ANCESTOR_MEMORY_LOOKUP
This is in preparation for creating unit_get_ancestor_memory_min.
| -rw-r--r-- | src/core/cgroup.c | 55 |
1 files changed, 30 insertions, 25 deletions
diff --git a/src/core/cgroup.c b/src/core/cgroup.c index ceb7ee2189..8884981b29 100644 --- a/src/core/cgroup.c +++ b/src/core/cgroup.c @@ -384,31 +384,36 @@ int cgroup_add_device_allow(CGroupContext *c, const char *dev, const char *mode) return 0; } -uint64_t unit_get_ancestor_memory_low(Unit *u) { - CGroupContext *c; - - /* 1. Is MemoryLow set in this unit? If so, use that. - * 2. Is DefaultMemoryLow set in any ancestor? If so, use that. - * 3. Otherwise, return CGROUP_LIMIT_MIN. */ - - assert(u); - - c = unit_get_cgroup_context(u); - - if (c->memory_low_set) - return c->memory_low; - - while (UNIT_ISSET(u->slice)) { - u = UNIT_DEREF(u->slice); - c = unit_get_cgroup_context(u); - - if (c->default_memory_low_set) - return c->default_memory_low; - } - - /* We've reached the root, but nobody had DefaultMemoryLow set, so set it to the kernel default. */ - return CGROUP_LIMIT_MIN; -} +#define UNIT_DEFINE_ANCESTOR_MEMORY_LOOKUP(entry) \ + uint64_t unit_get_ancestor_##entry(Unit *u) { \ + CGroupContext *c; \ + \ + /* 1. Is entry set in this unit? If so, use that. \ + * 2. Is the default for this entry set in any \ + * ancestor? If so, use that. \ + * 3. Otherwise, return CGROUP_LIMIT_MIN. */ \ + \ + assert(u); \ + \ + c = unit_get_cgroup_context(u); \ + \ + if (c->entry##_set) \ + return c->entry; \ + \ + while (UNIT_ISSET(u->slice)) { \ + u = UNIT_DEREF(u->slice); \ + c = unit_get_cgroup_context(u); \ + \ + if (c->default_##entry##_set) \ + return c->default_##entry; \ + } \ + \ + /* We've reached the root, but nobody had default for \ + * this entry set, so set it to the kernel default. */ \ + return CGROUP_LIMIT_MIN; \ +} + +UNIT_DEFINE_ANCESTOR_MEMORY_LOOKUP(memory_low); static void cgroup_xattr_apply(Unit *u) { char ids[SD_ID128_STRING_MAX]; |