From e4b7037c8613da41fb3f7b029414fe25370f53c0 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 15 Oct 2015 17:00:43 -0400 Subject: cgroup: drop cgroup__DEVEL__legacy_files_on_dfl Now that interfaces for the major three controllers - cpu, memory, io - are shaping up, there's no reason to have an option to force legacy files to show up on the unified hierarchy for testing. Drop it. Signed-off-by: Tejun Heo Cc: Li Zefan Cc: Johannes Weiner --- kernel/cgroup.c | 30 ++---------------------------- 1 file changed, 2 insertions(+), 28 deletions(-) (limited to 'kernel/cgroup.c') diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 74daeefa2d30..4f4fc538cb1b 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -173,12 +173,6 @@ EXPORT_SYMBOL_GPL(cgrp_dfl_root); */ static bool cgrp_dfl_root_visible; -/* - * Set by the boot param of the same name and makes subsystems with NULL - * ->dfl_files to use ->legacy_files on the default hierarchy. - */ -static bool cgroup_legacy_files_on_dfl; - /* some controllers are not supported in the default hierarchy */ static unsigned long cgrp_dfl_root_inhibit_ss_mask; @@ -3553,17 +3547,8 @@ int cgroup_add_legacy_cftypes(struct cgroup_subsys *ss, struct cftype *cfts) { struct cftype *cft; - /* - * If legacy_flies_on_dfl, we want to show the legacy files on the - * dfl hierarchy but iff the target subsystem hasn't been updated - * for the dfl hierarchy yet. - */ - if (!cgroup_legacy_files_on_dfl || - ss->dfl_cftypes != ss->legacy_cftypes) { - for (cft = cfts; cft && cft->name[0] != '\0'; cft++) - cft->flags |= __CFTYPE_NOT_ON_DFL; - } - + for (cft = cfts; cft && cft->name[0] != '\0'; cft++) + cft->flags |= __CFTYPE_NOT_ON_DFL; return cgroup_add_cftypes(ss, cfts); } @@ -5287,9 +5272,6 @@ int __init cgroup_init(void) cgrp_dfl_root.subsys_mask |= 1 << ss->id; - if (cgroup_legacy_files_on_dfl && !ss->dfl_cftypes) - ss->dfl_cftypes = ss->legacy_cftypes; - if (!ss->dfl_cftypes) cgrp_dfl_root_inhibit_ss_mask |= 1 << ss->id; @@ -5729,14 +5711,6 @@ static int __init cgroup_disable(char *str) } __setup("cgroup_disable=", cgroup_disable); -static int __init cgroup_set_legacy_files_on_dfl(char *str) -{ - printk("cgroup: using legacy files on the default hierarchy\n"); - cgroup_legacy_files_on_dfl = true; - return 0; -} -__setup("cgroup__DEVEL__legacy_files_on_dfl", cgroup_set_legacy_files_on_dfl); - /** * css_tryget_online_from_dir - get corresponding css from a cgroup dentry * @dentry: directory dentry of interest -- cgit v1.2.3-58-ga151