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/...
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rdt_get_mon_l3_config() is called via the architecture's resctrl_late_init(), and initialises both architecture specific fields, such as hw_res->mon_scale and resctrl filesystem fields by calling dom_data_init().
To separate the filesystem and architecture parts of resctrl, this function needs splitting up.
Add resctrl_mon_resource_init() to do the filesystem specific work, and call it from resctrl_init().
Signed-off-by: James Morse james.morse@arm.com Signed-off-by: Zeng Heng zengheng4@huawei.com --- arch/x86/kernel/cpu/resctrl/internal.h | 1 + arch/x86/kernel/cpu/resctrl/monitor.c | 22 +++++++++++++++------- arch/x86/kernel/cpu/resctrl/rdtgroup.c | 4 ++++ 3 files changed, 20 insertions(+), 7 deletions(-)
diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/resctrl/internal.h index fc47dcfc349b..d28200dc6b16 100644 --- a/arch/x86/kernel/cpu/resctrl/internal.h +++ b/arch/x86/kernel/cpu/resctrl/internal.h @@ -542,6 +542,7 @@ int rdtgroup_mondata_show(struct seq_file *m, void *arg); void mon_event_read(struct rmid_read *rr, struct rdt_resource *r, struct rdt_domain *d, struct rdtgroup *rdtgrp, int evtid, int first); +int resctrl_mon_resource_init(void); void mbm_setup_overflow_handler(struct rdt_domain *dom, unsigned long delay_ms, int exclude_cpu); diff --git a/arch/x86/kernel/cpu/resctrl/monitor.c b/arch/x86/kernel/cpu/resctrl/monitor.c index 79a6d1b8367b..35c9ee5ea51a 100644 --- a/arch/x86/kernel/cpu/resctrl/monitor.c +++ b/arch/x86/kernel/cpu/resctrl/monitor.c @@ -1019,12 +1019,26 @@ static void l3_mon_evt_init(struct rdt_resource *r) list_add_tail(&mbm_local_event.list, &r->evt_list); }
+int resctrl_mon_resource_init(void) +{ + struct rdt_resource *r = resctrl_arch_get_resource(RDT_RESOURCE_L3); + int ret; + + ret = dom_data_init(r); + if (ret) + return ret; + + if (r->mon_capable) + l3_mon_evt_init(r); + + return 0; +} + int __init rdt_get_mon_l3_config(struct rdt_resource *r) { unsigned int mbm_offset = boot_cpu_data.x86_cache_mbm_width_offset; struct rdt_hw_resource *hw_res = resctrl_to_arch_res(r); unsigned int threshold; - int ret;
resctrl_rmid_realloc_limit = boot_cpu_data.x86_cache_size * 1024; hw_res->mon_scale = boot_cpu_data.x86_cache_occ_scale; @@ -1052,10 +1066,6 @@ int __init rdt_get_mon_l3_config(struct rdt_resource *r) */ resctrl_rmid_realloc_threshold = resctrl_arch_round_mon_val(threshold);
- ret = dom_data_init(r); - if (ret) - return ret; - if (rdt_cpu_has(X86_FEATURE_BMEC)) { if (rdt_cpu_has(X86_FEATURE_CQM_MBM_TOTAL)) { mbm_total_event.configurable = true; @@ -1067,8 +1077,6 @@ int __init rdt_get_mon_l3_config(struct rdt_resource *r) } }
- l3_mon_evt_init(r); - r->mon_capable = true;
return 0; diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c index 5e59687dc04b..637a804f5bcb 100644 --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c @@ -4140,6 +4140,10 @@ int __init resctrl_init(void)
rdtgroup_setup_default();
+ ret = resctrl_mon_resource_init(); + if (ret) + return ret; + ret = sysfs_create_mount_point(fs_kobj, "resctrl"); if (ret) return ret;