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authorTejun Heo <htejun@fb.com>2016-08-07 09:45:39 -0400
committerTejun Heo <tj@kernel.org>2016-08-07 09:45:39 -0400
commit66ebf6c0a1005f90099e25ece5630551ad97a3c3 (patch)
treed66af9b366845249937bf6b16025552e97ff25be /src/core/load-fragment.h
parentceab9e2deee29dfda213a30c533c7dcd59c6bcad (diff)
core: add cgroup CPU controller support on the unified hierarchy
Unfortunately, due to the disagreements in the kernel development community, CPU controller cgroup v2 support has not been merged and enabling it requires applying two small out-of-tree kernel patches. The situation is explained in the following documentation. https://git.kernel.org/cgit/linux/kernel/git/tj/cgroup.git/tree/Documentation/cgroup-v2-cpu.txt?h=cgroup-v2-cpu While it isn't clear what will happen with CPU controller cgroup v2 support, there are critical features which are possible only on cgroup v2 such as buffered write control making cgroup v2 essential for a lot of workloads. This commit implements systemd CPU controller support on the unified hierarchy so that users who choose to deploy CPU controller cgroup v2 support can easily take advantage of it. On the unified hierarchy, "cpu.weight" knob replaces "cpu.shares" and "cpu.max" replaces "cpu.cfs_period_us" and "cpu.cfs_quota_us". [Startup]CPUWeight config options are added with the usual compat translation. CPU quota settings remain unchanged and apply to both legacy and unified hierarchies. v2: - Error in man page corrected. - CPU config application in cgroup_context_apply() refactored. - CPU accounting now works on unified hierarchy.
Diffstat (limited to 'src/core/load-fragment.h')
-rw-r--r--src/core/load-fragment.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/core/load-fragment.h b/src/core/load-fragment.h
index 213bce55a7..8b688740cf 100644
--- a/src/core/load-fragment.h
+++ b/src/core/load-fragment.h
@@ -81,6 +81,7 @@ int config_parse_syscall_errno(const char *unit, const char *filename, unsigned
int config_parse_environ(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
int config_parse_pass_environ(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
int config_parse_unit_slice(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_cpu_weight(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
int config_parse_cpu_shares(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
int config_parse_memory_limit(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
int config_parse_tasks_max(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);