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| author | Vikas Shivappa <vikas.shivappa@linux.intel.com> | 2017-07-25 14:14:41 -0700 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-08-01 22:41:27 +0200 |
| commit | 4af4a88e0c9246990f95c88eeba781265f27c58e (patch) | |
| tree | f9f85cf01d25aec85ce75035c2d08df4ab54ea51 /arch/x86/kernel/cpu/intel_rdt.h | |
| parent | f3cbeacaa06e2b8c2f3ce8531e9aa3fe1f2762cd (diff) | |
| download | op-kernel-dev-4af4a88e0c9246990f95c88eeba781265f27c58e.zip op-kernel-dev-4af4a88e0c9246990f95c88eeba781265f27c58e.tar.gz | |
x86/intel_rdt/cqm: Add mount,umount support
Add monitoring support during mount and unmount. Since root directory is
a "ctrl_mon" directory which can control and monitor resources create
the "mon_groups" directory which can hold monitor groups and a
"mon_data" directory which would hold all monitoring data like the rest
of resource groups.
The mount succeeds if either of monitoring or control/allocation is
enabled. If only monitoring is enabled user can still create monitor
groups under the "/sys/fs/resctrl/mon_groups/" and any mkdir under root
would fail. If only control/allocation is enabled all of the monitoring
related directories/files would not exist and resctrl would work in
legacy mode.
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/1501017287-28083-23-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 | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/intel_rdt.h b/arch/x86/kernel/cpu/intel_rdt.h index 7fcaa5f..92a5d30 100644 --- a/arch/x86/kernel/cpu/intel_rdt.h +++ b/arch/x86/kernel/cpu/intel_rdt.h @@ -22,6 +22,8 @@ #define RMID_VAL_ERROR BIT_ULL(63) #define RMID_VAL_UNAVAIL BIT_ULL(62) +DECLARE_STATIC_KEY_FALSE(rdt_enable_key); + /** * struct mon_evt - Entry in the event list of a resource * @evtid: event id @@ -59,6 +61,8 @@ extern bool rdt_alloc_capable; extern bool rdt_mon_capable; extern unsigned int rdt_mon_features; +DECLARE_STATIC_KEY_FALSE(rdt_mon_enable_key); + enum rdt_group_type { RDTCTRL_GROUP = 0, RDTMON_GROUP, |
