diff options
| author | Vikas Shivappa <vikas.shivappa@linux.intel.com> | 2017-07-25 14:14:38 -0700 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-08-01 22:41:26 +0200 |
| commit | d89b7379015fc561060a4094676d143e6ed264e7 (patch) | |
| tree | f9ada9e97ac5fa902837d70ccaecf17ed49e143f /arch/x86/kernel/cpu/intel_rdt.c | |
| parent | 90c403e83101c87ee9e6df8c8d30ea8628ff8bfc (diff) | |
x86/intel_rdt/cqm: Add mon_data
Add a mon_data directory for the root rdtgroup and all other rdtgroups.
The directory holds all of the monitored data for all domains and events
of all resources being monitored.
The mon_data itself has a list of directories in the format
mon_<domain_name>_<domain_id>. Each of these subdirectories contain one
file per event in the mode "0444". Reading the file displays a snapshot
of the monitored data for the event the file represents.
For ex, on a 2 socket Broadwell with llc_occupancy being
monitored the mon_data contents look as below:
$ ls /sys/fs/resctrl/p1/mon_data/
mon_L3_00
mon_L3_01
Each domain directory has one file per event:
$ ls /sys/fs/resctrl/p1/mon_data/mon_L3_00/
llc_occupancy
To read current llc_occupancy of ctrl_mon group p1
$ cat /sys/fs/resctrl/p1/mon_data/mon_L3_00/llc_occupancy
33789096
[This patch idea is based on Tony's sample patches to organise data in a
per domain directory and have one file per event (and use the fp->priv to
store mon data bits)]
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/1501017287-28083-20-git-send-email-vikas.shivappa@linux.intel.com
Diffstat (limited to 'arch/x86/kernel/cpu/intel_rdt.c')
| -rw-r--r-- | arch/x86/kernel/cpu/intel_rdt.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/x86/kernel/cpu/intel_rdt.c b/arch/x86/kernel/cpu/intel_rdt.c index 303b085b969f..050ea15259ea 100644 --- a/arch/x86/kernel/cpu/intel_rdt.c +++ b/arch/x86/kernel/cpu/intel_rdt.c @@ -71,6 +71,7 @@ cat_wrmsr(struct rdt_domain *d, struct msr_param *m, struct rdt_resource *r); struct rdt_resource rdt_resources_all[] = { [RDT_RESOURCE_L3] = { + .rid = RDT_RESOURCE_L3, .name = "L3", .domains = domain_init(RDT_RESOURCE_L3), .msr_base = IA32_L3_CBM_BASE, @@ -87,6 +88,7 @@ struct rdt_resource rdt_resources_all[] = { }, [RDT_RESOURCE_L3DATA] = { + .rid = RDT_RESOURCE_L3DATA, .name = "L3DATA", .domains = domain_init(RDT_RESOURCE_L3DATA), .msr_base = IA32_L3_CBM_BASE, @@ -103,6 +105,7 @@ struct rdt_resource rdt_resources_all[] = { }, [RDT_RESOURCE_L3CODE] = { + .rid = RDT_RESOURCE_L3CODE, .name = "L3CODE", .domains = domain_init(RDT_RESOURCE_L3CODE), .msr_base = IA32_L3_CBM_BASE, @@ -119,6 +122,7 @@ struct rdt_resource rdt_resources_all[] = { }, [RDT_RESOURCE_L2] = { + .rid = RDT_RESOURCE_L2, .name = "L2", .domains = domain_init(RDT_RESOURCE_L2), .msr_base = IA32_L2_CBM_BASE, @@ -135,6 +139,7 @@ struct rdt_resource rdt_resources_all[] = { }, [RDT_RESOURCE_MBA] = { + .rid = RDT_RESOURCE_MBA, .name = "MB", .domains = domain_init(RDT_RESOURCE_MBA), .msr_base = IA32_MBA_THRTL_BASE, @@ -362,8 +367,8 @@ void rdt_ctrl_update(void *arg) * caller, return the first domain whose id is bigger than the input id. * The domain list is sorted by id in ascending order. */ -static struct rdt_domain *rdt_find_domain(struct rdt_resource *r, int id, - struct list_head **pos) +struct rdt_domain *rdt_find_domain(struct rdt_resource *r, int id, + struct list_head **pos) { struct rdt_domain *d; struct list_head *l; |