Commit 370d166d authored by James Morse's avatar James Morse
Browse files

arm_mpam: resctrl: Implement resctrl_arch_reset_all_ctrls() 



We already have a helper for resetting an mpam class and component.  Hook
it up to resctrl_arch_reset_all_ctrls() and the domain offline path.

Tested-by: default avatarGavin Shan <gshan@redhat.com>
Tested-by: default avatarShaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Tested-by: default avatarPeter Newman <peternewman@google.com>
Tested-by: default avatarZeng Heng <zengheng4@huawei.com>
Tested-by: default avatarPunit Agrawal <punit.agrawal@oss.qualcomm.com>
Tested-by: default avatarJesse Chick <jessechick@os.amperecomputing.com>
Reviewed-by: default avatarShaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Reviewed-by: default avatarZeng Heng <zengheng4@huawei.com>
Reviewed-by: default avatarJonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: default avatarGavin Shan <gshan@redhat.com>
Co-developed-by: default avatarBen Horgan <ben.horgan@arm.com>
Signed-off-by: default avatarBen Horgan <ben.horgan@arm.com>
Signed-off-by: default avatarJames Morse <james.morse@arm.com>
parent 52a4edb1

drivers/resctrl/mpam_devices.c

+1 −1
Original line number Diff line number Diff line
@@ -2551,7 +2551,7 @@ static void mpam_reset_component_locked(struct mpam_component *comp) 
	}

}



static void mpam_reset_class_locked(struct mpam_class *class)

void mpam_reset_class_locked(struct mpam_class *class)

{

	struct mpam_component *comp;

drivers/resctrl/mpam_internal.h

+3 −0
Original line number Diff line number Diff line
@@ -388,6 +388,9 @@ extern u8 mpam_pmg_max; 
void mpam_enable(struct work_struct *work);

void mpam_disable(struct work_struct *work);



/* Reset all the RIS in a class under cpus_read_lock() */

void mpam_reset_class_locked(struct mpam_class *class);



int mpam_apply_config(struct mpam_component *comp, u16 partid,

		      struct mpam_config *cfg);

drivers/resctrl/mpam_resctrl.c

+13 −0
Original line number Diff line number Diff line
@@ -170,6 +170,19 @@ static int mpam_resctrl_pick_domain_id(int cpu, struct mpam_component *comp) 
	return comp->comp_id;

}



void resctrl_arch_reset_all_ctrls(struct rdt_resource *r)

{

	struct mpam_resctrl_res *res;



	lockdep_assert_cpus_held();



	if (!mpam_is_enabled())

		return;



	res = container_of(r, struct mpam_resctrl_res, resctrl_res);

	mpam_reset_class_locked(res->class);

}



static void mpam_resctrl_domain_hdr_init(int cpu, struct mpam_component *comp,

					 enum resctrl_res_level rid,

					 struct rdt_domain_hdr *hdr)