From: James Morse <james.morse@arm.com> maillist inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8T2RT Reference: https://git.kernel.org/pub/scm/linux/kernel/git/morse/linux.git/log/?h=mpam/... --------------------------- max_name_width and max_data_width are used to pad the strings in the resctrl schemata file. This should be part of the fs code as it influences the user-space interface, but currently max_data_width is generated by the arch init code. max_name_width is already managed by schemata_list_add(). Move the variables and max_data_width's initialisation code to rdtgroup.c. Signed-off-by: James Morse <james.morse@arm.com> Signed-off-by: Zeng Heng <zengheng4@huawei.com> --- arch/x86/kernel/cpu/resctrl/core.c | 22 ---------------------- arch/x86/kernel/cpu/resctrl/rdtgroup.c | 12 ++++++++++++ 2 files changed, 12 insertions(+), 22 deletions(-) diff --git a/arch/x86/kernel/cpu/resctrl/core.c b/arch/x86/kernel/cpu/resctrl/core.c index 2d1af875e1c4..689649ad48ff 100644 --- a/arch/x86/kernel/cpu/resctrl/core.c +++ b/arch/x86/kernel/cpu/resctrl/core.c @@ -44,12 +44,6 @@ static DEFINE_MUTEX(domain_list_lock); */ DEFINE_PER_CPU(struct resctrl_pqr_state, pqr_state); -/* - * Used to store the max resource name width and max resource data width - * to display the schemata in a tabular format - */ -int max_name_width, max_data_width; - /* * Global boolean for rdt_alloc which is true if any * resource allocation is enabled. @@ -648,20 +642,6 @@ static int resctrl_arch_offline_cpu(unsigned int cpu) return 0; } -/* - * Choose a width for the resource name and resource data based on the - * resource that has widest name and cbm. - */ -static __init void rdt_init_padding(void) -{ - struct rdt_resource *r; - - for_each_alloc_capable_rdt_resource(r) { - if (r->data_width > max_data_width) - max_data_width = r->data_width; - } -} - enum { RDT_FLAG_CMT, RDT_FLAG_MBM_TOTAL, @@ -959,8 +939,6 @@ static int __init resctrl_arch_late_init(void) if (!get_rdt_resources()) return -ENODEV; - rdt_init_padding(); - state = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "x86/resctrl/cat:online:", resctrl_arch_online_cpu, diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c index ec8ef2ecf80d..9113c0a8b2cf 100644 --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c @@ -58,6 +58,12 @@ static struct kernfs_node *kn_mongrp; /* Kernel fs node for "mon_data" directory under root */ static struct kernfs_node *kn_mondata; +/* + * Used to store the max resource name width and max resource data width + * to display the schemata in a tabular format + */ +int max_name_width, max_data_width; + static struct seq_buf last_cmd_status; static char last_cmd_status_buf[512]; @@ -2594,6 +2600,12 @@ static int schemata_list_add(struct rdt_resource *r, enum resctrl_conf_type type if (cl > max_name_width) max_name_width = cl; + /* + * Choose a width for the resource data based on the resource that has + * widest name and cbm. + */ + max_data_width = max(max_data_width, r->data_width); + INIT_LIST_HEAD(&s->list); list_add(&s->list, &resctrl_schema_all); -- 2.25.1