hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I95IFL CVE: NA

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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: Zeng Heng zengheng4@huawei.com --- arch/arm64/include/asm/resctrl.h | 5 +--- arch/arm64/kernel/mpam/mpam_ctrlmon.c | 34 +++++++++++++++++++++++++++ 2 files changed, 35 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/include/asm/resctrl.h b/arch/arm64/include/asm/resctrl.h index 3fceaa482e5a..2865397740b4 100644 --- a/arch/arm64/include/asm/resctrl.h +++ b/arch/arm64/include/asm/resctrl.h @@ -415,10 +415,7 @@ 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);

diff --git a/arch/arm64/kernel/mpam/mpam_ctrlmon.c b/arch/arm64/kernel/mpam/mpam_ctrlmon.c index 4b8429ceddb6..9bf4f68fb2f5 100644 --- a/arch/arm64/kernel/mpam/mpam_ctrlmon.c +++ b/arch/arm64/kernel/mpam/mpam_ctrlmon.c @@ -1027,3 +1027,37 @@ 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; +}