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Date: Thu, 13 Mar 2014 15:50:13 -0400 From: Tejun Heo <tj@...nel.org> To: lizefan@...wei.com Cc: cgroups@...r.kernel.org, containers@...ts.linux-foundation.org, linux-kernel@...r.kernel.org, Tejun Heo <tj@...nel.org> Subject: [PATCH 11/11] cgroup: implement CFTYPE_ONLY_ON_DFL This cftype flag makes the file only appear on the default hierarchy. This will later be used for cgroup.controllers file. Signed-off-by: Tejun Heo <tj@...nel.org> --- include/linux/cgroup.h | 1 + kernel/cgroup.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 7e9fa50..43d1ed3 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -384,6 +384,7 @@ enum { CFTYPE_NOT_ON_ROOT = (1 << 1), /* don't create on root cgrp */ CFTYPE_INSANE = (1 << 2), /* don't create if sane_behavior */ CFTYPE_NO_PREFIX = (1 << 3), /* (DON'T USE FOR NEW FILES) no subsys prefix */ + CFTYPE_ONLY_ON_DFL = (1 << 4), /* only on default hierarchy */ }; #define MAX_CFTYPE_NAME 64 diff --git a/kernel/cgroup.c b/kernel/cgroup.c index c42230c..79e3573 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -2356,6 +2356,8 @@ static int cgroup_addrm_files(struct cgroup *cgrp, struct cftype cfts[], for (cft = cfts; cft->name[0] != '\0'; cft++) { /* does cft->flags tell us to skip this file on @cgrp? */ + if ((cft->flags & CFTYPE_ONLY_ON_DFL) && !cgroup_on_dfl(cgrp)) + continue; if ((cft->flags & CFTYPE_INSANE) && cgroup_sane_behavior(cgrp)) continue; if ((cft->flags & CFTYPE_NOT_ON_ROOT) && !cgrp->parent) -- 1.8.5.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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