| Message ID | 20221111183532.3676646-19-kristen@linux.intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add Cgroup support for SGX EPC memory | expand |
On Fri, Nov 11, 2022 at 10:35:23AM -0800, Kristen Carlson Accardi wrote: > diff --git a/include/linux/misc_cgroup.h b/include/linux/misc_cgroup.h > index 8f1b7b6cb81d..b79c78378f17 100644 > --- a/include/linux/misc_cgroup.h > +++ b/include/linux/misc_cgroup.h > @@ -59,6 +59,7 @@ struct misc_cg { > struct misc_res res[MISC_CG_RES_TYPES]; > }; > > +struct misc_cg *root_misc(void); This is too generic a name to expose globally. Can we do sth like cgrp_misc_root()? Thanks.
diff --git a/include/linux/misc_cgroup.h b/include/linux/misc_cgroup.h index 8f1b7b6cb81d..b79c78378f17 100644 --- a/include/linux/misc_cgroup.h +++ b/include/linux/misc_cgroup.h @@ -59,6 +59,7 @@ struct misc_cg { struct misc_res res[MISC_CG_RES_TYPES]; }; +struct misc_cg *root_misc(void); unsigned long misc_cg_res_total_usage(enum misc_res_type type); int misc_cg_set_capacity(enum misc_res_type type, unsigned long capacity); int misc_cg_try_charge(enum misc_res_type type, struct misc_cg *cg, @@ -106,6 +107,10 @@ static inline void put_misc_cg(struct misc_cg *cg) } #else /* !CONFIG_CGROUP_MISC */ +static inline struct misc_cg *root_misc(void) +{ + return NULL; +} static inline unsigned long misc_cg_res_total_usage(enum misc_res_type type) { diff --git a/kernel/cgroup/misc.c b/kernel/cgroup/misc.c index 1e93e1d20347..8aa994d9cd02 100644 --- a/kernel/cgroup/misc.c +++ b/kernel/cgroup/misc.c @@ -45,6 +45,15 @@ static unsigned long misc_res_capacity[MISC_CG_RES_TYPES]; */ static BLOCKING_NOTIFIER_HEAD(misc_cg_notify_list); +/** + * root_misc() - Return the root misc cgroup. + */ +struct misc_cg *root_misc(void) +{ + return &root_cg; +} +EXPORT_SYMBOL_GPL(root_misc); + /** * parent_misc() - Get the parent of the passed misc cgroup. * @cgroup: cgroup whose parent needs to be fetched.
The SGX driver will need to get access to the root misc_cg object to do iterative walks and also determine if a charge will be towards the root cgroup or not. Signed-off-by: Kristen Carlson Accardi <kristen@linux.intel.com> --- include/linux/misc_cgroup.h | 5 +++++ kernel/cgroup/misc.c | 9 +++++++++ 2 files changed, 14 insertions(+)