On 08/13/2010 03:00 PM, Ivana Hutarova Varekova wrote:
> This patch adds option new option "-i" to lssubsys tool. This option displays
> for mount controllers
> the number of hierarchie in which they are:
>
>
> SEMANTIC:
> lssubsys [-m|--mount-points] [-i|--hierarchies] [-a|--all]
>
> -i, --hierrachies
> Display attached hierarchy number, if the subsystem is in a
> hierrachy.
> If the option -m is used too, then the hierarchy number is
> shown only for not mounted hierarchies.
>
> EXAMPLE:
> $ lssubsys -ami
> ns
> cpuset 5
> cpu,devices 6
> cpuacct /cgroup/cpuacct
> memory /cgroup/memory
> freezer /cgroup/freezer
> net_cls /cgroup/net_cls
>
> $ lssubsys -ai
> ns
> cpuset 5
> cpu,devices 6
> cpuacct 7
> memory 8
> freezer 9
> net_cls 4
>
>
>
> Signed-off-by: Ivana Hutarova Varekova<[email protected]>
Acked-By: Jan Safranek <[email protected]>
> ---
>
> src/tools/lssubsys.c | 16 +++++++++++++---
> 1 files changed, 13 insertions(+), 3 deletions(-)
>
> diff --git a/src/tools/lssubsys.c b/src/tools/lssubsys.c
> index e48daa6..f1225be 100644
> --- a/src/tools/lssubsys.c
> +++ b/src/tools/lssubsys.c
> @@ -22,7 +22,8 @@
> enum flag{
> FL_MOUNT = 1, /* show the mount points */
> FL_LIST = 2,
> - FL_ALL = 4 /* show all subsystems - not mounted too */
> + FL_ALL = 4, /* show all subsystems - not mounted too */
> + FL_HIERARCHY = 8 /* show info about hierarchies */
> };
>
> typedef char cont_name_t[FILENAME_MAX];
> @@ -46,6 +47,8 @@ static void usage(int status, const char *program_name)
> fprintf(stdout, " -a, --all "\
> "Display information about all controllers "\
> "(including not mounted ones) \n");
> + fprintf(stdout, " -i, --hierarchies Display information "\
> + "about hierarchies\n");
> }
> }
>
> @@ -246,7 +249,10 @@ next:
> }
>
> cgroup_get_all_controller_end(&handle);
> - printf("\n");
> + if (flags& FL_HIERARCHY)
> + printf(" %d\n", hierarchy);
> + else
> + printf("\n");
>
> if (ret == ECGEOF)
> ret = 0;
> @@ -323,6 +329,7 @@ int main(int argc, char *argv[])
> {"help", 0, 0, 'h'},
> {"mount-points", 0, 0, 'm'},
> {"all", 0, 0, 'a'},
> + {"hierarchies", 0, 0, 'i'},
> {0, 0, 0, 0}
> };
>
> @@ -330,7 +337,7 @@ int main(int argc, char *argv[])
> cont_name[i][0] = '\0';
>
> /* parse arguments */
> - while ((c = getopt_long(argc, argv, "mha", options, NULL))> 0) {
> + while ((c = getopt_long(argc, argv, "mhai", options, NULL))> 0) {
> switch (c) {
> case 'h':
> usage(0, argv[0]);
> @@ -341,6 +348,9 @@ int main(int argc, char *argv[])
> case 'a':
> flags |= FL_ALL;
> break;
> + case 'i':
> + flags |= FL_HIERARCHY;
> + break;
> default:
> usage(1, argv[0]);
> return -1;
>
>
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