Re: [PATCH 1/7] cgroups: Shrink struct cgroup_subsys
From: Paul Menage
Date: Thu Oct 28 2010 - 19:35:07 EST
On Fri, Oct 22, 2010 at 1:09 AM, Li Zefan <lizf@xxxxxxxxxxxxxx> wrote:
> On x86_32, sizeof(struct cgroup_subsys) shrinks from 276 bytes
> to 264.
>
> Signed-off-by: Li Zefan <lizf@xxxxxxxxxxxxxx>
Acked-by: Paul Menage <menage@xxxxxxxxxx>
Maybe use "bool" here?
Paul
> ---
> include/linux/cgroup.h | 10 ++++++----
> 1 files changed, 6 insertions(+), 4 deletions(-)
>
> diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
> index ed4ba11..e23ded6 100644
> --- a/include/linux/cgroup.h
> +++ b/include/linux/cgroup.h
> @@ -481,14 +481,16 @@ struct cgroup_subsys {
> void (*bind)(struct cgroup_subsys *ss, struct cgroup *root);
>
> int subsys_id;
> - int active;
> - int disabled;
> - int early_init;
> +
> + unsigned int active:1;
> + unsigned int disabled:1;
> + unsigned int early_init:1;
> /*
> * True if this subsys uses ID. ID is not available before cgroup_init()
> * (not available in early_init time.)
> */
> - bool use_id;
> + unsigned int use_id:1;
> +
> #define MAX_CGROUP_TYPE_NAMELEN 32
> const char *name;
>
> --
> 1.7.0.1
>
>
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