CFTYPE_NO_PREFIX = (1 << 3), /* (DON'T USE FOR NEW FILES) no subsys prefix */
CFTYPE_WORLD_WRITABLE = (1 << 4), /* (DON'T USE FOR NEW FILES) S_IWUGO */
+ CFTYPE_DEBUG = (1 << 5), /* create when cgroup_debug */
/* internal flags, do not use outside cgroup core proper */
__CFTYPE_ONLY_ON_DFL = (1 << 16), /* only on default hierarchy */
#define TRACE_CGROUP_PATH_LEN 1024
extern spinlock_t trace_cgroup_path_lock;
extern char trace_cgroup_path[TRACE_CGROUP_PATH_LEN];
+extern bool cgroup_debug;
+extern void __init enable_debug_cgroup(void);
/*
* cgroup_path() takes a spin lock. It is good practice not to take
DEFINE_SPINLOCK(trace_cgroup_path_lock);
char trace_cgroup_path[TRACE_CGROUP_PATH_LEN];
+bool cgroup_debug __read_mostly;
/*
* Protects cgroup_idr and css_idr so that IDs can be released without
continue;
if ((cft->flags & CFTYPE_ONLY_ON_ROOT) && cgroup_parent(cgrp))
continue;
-
+ if ((cft->flags & CFTYPE_DEBUG) && !cgroup_debug)
+ continue;
if (is_add) {
ret = cgroup_add_file(css, cgrp, cft);
if (ret) {
}
__setup("cgroup_disable=", cgroup_disable);
+void __init __weak enable_debug_cgroup(void) { }
+
+static int __init enable_cgroup_debug(char *str)
+{
+ cgroup_debug = true;
+ enable_debug_cgroup();
+ return 1;
+}
+__setup("cgroup_debug", enable_cgroup_debug);
+
/**
* css_tryget_online_from_dir - get corresponding css from a cgroup dentry
* @dentry: directory dentry of interest
FILE_MEMLIST,
FILE_EFFECTIVE_CPULIST,
FILE_EFFECTIVE_MEMLIST,
+ FILE_SUBPARTS_CPULIST,
FILE_CPU_EXCLUSIVE,
FILE_MEM_EXCLUSIVE,
FILE_MEM_HARDWALL,
case FILE_EFFECTIVE_MEMLIST:
seq_printf(sf, "%*pbl\n", nodemask_pr_args(&cs->effective_mems));
break;
+ case FILE_SUBPARTS_CPULIST:
+ seq_printf(sf, "%*pbl\n", cpumask_pr_args(cs->subparts_cpus));
+ break;
default:
ret = -EINVAL;
}
.flags = CFTYPE_NOT_ON_ROOT,
},
+ {
+ .name = "cpus.subpartitions",
+ .seq_show = cpuset_common_seq_show,
+ .private = FILE_SUBPARTS_CPULIST,
+ .flags = CFTYPE_DEBUG,
+ },
+
{ } /* terminate */
};
* On v2, debug is an implicit controller enabled by "cgroup_debug" boot
* parameter.
*/
-static int __init enable_cgroup_debug(char *str)
+void __init enable_debug_cgroup(void)
{
debug_cgrp_subsys.dfl_cftypes = debug_files;
debug_cgrp_subsys.implicit_on_dfl = true;
debug_cgrp_subsys.threaded = true;
- return 1;
}
-__setup("cgroup_debug", enable_cgroup_debug);