As far as I know, yes, it is compiled. Memory controller is normally
mounted in /cgroup/ and all files are present.
Here my kernel config :
CONFIG_CGROUPS=y
# CONFIG_CGROUP_DEBUG is not set
CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CGROUP_CPUACCT=y
CONFIG_CGROUP_MEM_RES_CTLR=y
CONFIG_CGROUP_MEM_RES_CTLR_SWAP=y
# CONFIG_CGROUP_MEM_RES_CTLR_SWAP_ENABLED is not set
CONFIG_CGROUP_PERF=y
CONFIG_CGROUP_SCHED=y
CONFIG_BLK_CGROUP=y
# CONFIG_DEBUG_BLK_CGROUP is not set
CONFIG_NET_CLS_CGROUP=y
If I disable memory controller everything will work fine with all other
controllers. But, when enabling again memory controller, I have problems
getting some files like freezer.state or memory.failctn. I guess this is
because of the failure of cgroup_get_cgroup().
Am I missing something ?
Best regards,
2014-12-08 11:32 GMT+01:00 Balbir Singh <bsinghar...@gmail.com>:
> On Mon, Dec 8, 2014 at 3:52 PM, Alexandre LAURENT
> <pro.laurent.alexan...@gmail.com> wrote:
> > Hello,
> >
> > I am using libcg 0.41 and Linux Kernel 3.2.0.4 (AMD 64) on Debian 7.
> > When I am using memory controller (and some others) through the following
> > config file :
> > ---
> > mount {
> > cpu = /cgroup/cpu;
> > freezer = /cgroup/freezer;
> > net_cls = /cgroup/net_cls;
> > blkio = /cgroup/blkio;
> > memory = /cgroup/memory;
> > }
> > ---
> >
> > the cgroup_get_cgroup() function is returning an error "Cgroup invalid
> > operation".
> > The error seems to be emitted from cgroup_add_controller() which will
> > return on this case :
> > /*
> > * Still not sure how to handle the failure here.
> > */
> > for (i = 0; i < cgroup->index; i++) {
> > if (strncmp(name, cgroup->controller[i]->name,
> > sizeof(cgroup->controller[i]->name)) == 0)
> > {
> > return NULL;
> > }
> > }
> >
> >
> > When commenting the memory controller line, the error disappear.
> > I have also tried to output all debug messages available in libcg, but
> none
> > of these seems related to this issue.
> >
> > What can cause this issue ?
>
> Is memory cgroup compiled?
>
> Balbir Singh.
>
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