Commit acb64f38 authored by Zeng Heng's avatar Zeng Heng
Browse files

arm64/mpam: support resctrl fs to show mounting option 

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I91UCV


CVE: NA

----------------------------------------

Support to display MPAM mounting options:

  # mount -t resctrl resctrl /sys/fs/resctrl/ -o cdpl3,mbMin,mbMax,mbHdl,caPbm
  # mount | grep resctrl
  resctrl on /sys/fs/resctrl type resctrl (rw,relatime,cdpl3,caPbm,mbMax,mbMin,mbHdl)

Signed-off-by: default avatarZeng Heng <zengheng4@huawei.com>
parent df46ea01

arch/arm64/include/asm/resctrl.h

+1 −4
Original line number Diff line number Diff line
@@ -412,10 +412,7 @@ void resctrl_resource_reset(void); 


int resctrl_group_init_alloc(struct rdtgroup *rdtgrp);



static inline int __resctrl_group_show_options(struct seq_file *seq)

{

	return 0;

}

int __resctrl_group_show_options(struct seq_file *seq);



int resctrl_update_groups_config(struct rdtgroup *rdtgrp);

arch/arm64/kernel/mpam/mpam_ctrlmon.c

+34 −0
Original line number Diff line number Diff line
@@ -1015,3 +1015,37 @@ int resctrl_update_groups_config(struct rdtgroup *rdtgrp) 


	return ret;

}



int __resctrl_group_show_options(struct seq_file *seq)

{

	struct resctrl_resource *res;

	struct raw_resctrl_resource *r;



	res = mpam_resctrl_get_resource(RDT_RESOURCE_L3);

	if (res && res->cdp_enable)

		seq_puts(seq, ",cdpl3");



	res = mpam_resctrl_get_resource(RDT_RESOURCE_L2);

	if (res && res->cdp_enable)

		seq_puts(seq, ",cdpl2");



	r = mpam_get_raw_resctrl_resource(RDT_RESOURCE_L3);

	if (r && r->ctrl_features[SCHEMA_PBM].enabled)

		seq_puts(seq, ",caPbm");

	if (r && r->ctrl_features[SCHEMA_MAX].enabled)

		seq_puts(seq, ",caMax");

	if (r && r->ctrl_features[SCHEMA_PRI].enabled)

		seq_puts(seq, ",caPrio");



	r = mpam_get_raw_resctrl_resource(RDT_RESOURCE_MC);

	if (r && r->ctrl_features[SCHEMA_MAX].enabled)

		seq_puts(seq, ",mbMax");

	if (r && r->ctrl_features[SCHEMA_MIN].enabled)

		seq_puts(seq, ",mbMin");

	if (r && r->ctrl_features[SCHEMA_HDL].enabled)

		seq_puts(seq, ",mbHdl");

	if (r && r->ctrl_features[SCHEMA_PRI].enabled)

		seq_puts(seq, ",mbPrio");



	return 0;

}