diff options
| author | Vikas Shivappa <vikas.shivappa@linux.intel.com> | 2017-07-25 14:14:46 -0700 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-08-01 22:41:29 +0200 |
| commit | a4de1dfdd726537e2a78b55759fc646d9b0a0be8 (patch) | |
| tree | 7b3e16e16417ada6e732bf59c8098b1f434e12bd /arch/x86/kernel/cpu/intel_rdt.h | |
| parent | 9f52425ba303d91c8370719e91d7e578bfdf309f (diff) | |
x86/intel_rdt/mbm: Add mbm counter initialization
MBM counters are monotonically increasing counts representing the total
memory bytes at a particular time. In order to calculate total_bytes for
an rdtgroup, we store the value of the counter when we create an
rdtgroup or when a new domain comes online.
When the total_bytes(all memory controller bytes) or local_bytes(local
memory controller bytes) file in "mon_data" is read it shows the
total bytes for that rdtgroup since its creation. User can snapshot this
at different time intervals to obtain bytes/second.
Signed-off-by: Vikas Shivappa <vikas.shivappa@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: ravi.v.shankar@intel.com
Cc: tony.luck@intel.com
Cc: fenghua.yu@intel.com
Cc: peterz@infradead.org
Cc: eranian@google.com
Cc: vikas.shivappa@intel.com
Cc: ak@linux.intel.com
Cc: davidcc@google.com
Cc: reinette.chatre@intel.com
Link: http://lkml.kernel.org/r/1501017287-28083-28-git-send-email-vikas.shivappa@linux.intel.com
Diffstat (limited to 'arch/x86/kernel/cpu/intel_rdt.h')
| -rw-r--r-- | arch/x86/kernel/cpu/intel_rdt.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/intel_rdt.h b/arch/x86/kernel/cpu/intel_rdt.h index 2137d5e55803..f160403324d3 100644 --- a/arch/x86/kernel/cpu/intel_rdt.h +++ b/arch/x86/kernel/cpu/intel_rdt.h @@ -55,6 +55,7 @@ struct rmid_read { struct rdtgroup *rgrp; struct rdt_domain *d; int evtid; + bool first; u64 val; }; @@ -263,6 +264,12 @@ static inline bool is_mbm_enabled(void) return (is_mbm_total_enabled() || is_mbm_local_enabled()); } +static inline bool is_mbm_event(int e) +{ + return (e >= QOS_L3_MBM_TOTAL_EVENT_ID && + e <= QOS_L3_MBM_LOCAL_EVENT_ID); +} + /** * struct rdt_resource - attributes of an RDT resource * @rid: The index of the resource @@ -402,5 +409,7 @@ void rmdir_mondata_subdir_allrdtgrp(struct rdt_resource *r, unsigned int dom_id); void mkdir_mondata_subdir_allrdtgrp(struct rdt_resource *r, struct rdt_domain *d); +void mon_event_read(struct rmid_read *rr, struct rdt_domain *d, + struct rdtgroup *rdtgrp, int evtid, int first); #endif /* _ASM_X86_INTEL_RDT_H */ |