----- Original Message -----
> From: "Weng Meiling" <wengmeiling.w...@huawei.com>
> To: "Ivana Varekova" <varek...@redhat.com>
> Cc: "Huang Qiang" huangqi...@huawei.com>, "libo chen" <libo.c...@huawei.com>,
> "Libcg Development list"
> sourceforge.net>
> Sent: Friday, September 27, 2013 3:02:29 AM
> Subject: Fwd: [PATCH] cgdelete:fix the display problem
>
> Hi Ivana,
>
> what do you think about this patch ?
>
> Thanks!
> Weng Meiling
Hello,
fro my point of view if there are two controllers in one hierarchy
e.g. cpu,cpuacct and there is directory /test in this hierarchy then
* cgdelete -g cpu,cpuacct:/test
should be ok
* cgdelete -g cpu:/test -g cpuacct:/test
should be ok(there is only one record for each hierarchy)
* cgdelete -g cpu:/test -g cpu:/test
should fail (analogous to rm, rmdir)
This patch returns ok in all cases. What is your opinion?
Ivana
>
>
> -------- Original Message --------
> Subject: [PATCH] cgdelete:fix the display problem
> Date: Sat, 14 Sep 2013 15:15:04 +0800
> From: Weng Meiling <wengmeiling.w...@huawei.com>
> CC: Ivana Varekova <varek...@redhat.com>, Huang Qiang
> huangqi...@huawei.com>, Libcg Development list
> sourceforge.net>, libo chen <libo.c...@huawei.com>
>
>
> From: Weng Meiling <wengmeiling.w...@huawei.com>
>
> When multi subsystems mounted on one place like this:
>
> # lssubsys -m
> cpu,cpuacct /cgroup/cpu
>
> # lscgroup
> cpu,cpuacct:/
> cpu,cpuacct:/test
>
> if we delete the cgroup with the cgdelete -g, and specifying multi
> controllers like this:
>
> # cgdelete -g cpu,cpuacct:test
>
> or
>
> # cgdelete -g cpu:test -g cpuacct:test
>
> it will report error:
> cgdelete: cannot remove group 'test': No such file or directory
>
> this patch fix the problem.
>
> Signed-off-by: Weng Meiling <wengmeiling.w...@huawei.com>
> ---
> src/tools/cgdelete.c | 34 ++++++++++++++++++++++++++++++++++
> 1 file changed, 34 insertions(+)
>
> diff --git a/src/tools/cgdelete.c b/src/tools/cgdelete.c
> index e84cd2d..a06ec75 100644
> --- a/src/tools/cgdelete.c
> +++ b/src/tools/cgdelete.c
> @@ -60,6 +60,8 @@ int main(int argc, char *argv[])
> int c;
> int flags = 0;
> int final_ret = 0;
> + int counter = 0;
> + int h_list[CG_CONTROLLER_MAX];
>
> struct cgroup_group_spec **cgroup_list = NULL;
> struct cgroup *cgroup;
> @@ -139,6 +141,37 @@ int main(int argc, char *argv[])
> /* add controllers to the cgroup */
> j = 0;
> while (cgroup_list[i]->controllers[j]) {
> + int k;
> + struct controller_data info;
> + void *handle;
> +
> + /* determine and skip the controllers mounted on one
> place */
> + ret = cgroup_get_all_controller_begin(&handle,
> &info);
> + while (ret == 0) {
> + if (!strcmp(info.name,
> cgroup_list[i]->controllers[j])) {
> + for (k = 0; k < counter; k++)
> + if (h_list[k] ==
> info.hierarchy)
> + break;
> + if (k < counter)
> + goto skip_add;
> + else {
> + h_list[counter] =
> info.hierarchy;
> + counter++;
> + }
> + break;
> + }
> + ret =
> cgroup_get_all_controller_next(&handle, &info);
> + }
> + cgroup_get_all_controller_end(&handle);
> + if (ret == ECGEOF)
> + ret = 0;
> + if (ret) {
> + fprintf(stderr,
> + "cgroup_get_controller_begin/next
> failed(%s)\n",
> + cgroup_strerror(ret));
> + goto err;
> + }
> +
> cgc = cgroup_add_controller(cgroup,
> cgroup_list[i]->controllers[j]);
> if (!cgc) {
> @@ -150,6 +183,7 @@ int main(int argc, char *argv[])
> cgroup_free(&cgroup);
> goto err;
> }
> + skip_add:
> j++;
> }
>
> --
> 1.8.2.2
>
>
>
>
>
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