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| author | Fenghua Yu <fenghua.yu@intel.com> | 2016-10-28 15:04:42 -0700 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-10-30 19:10:14 -0600 |
| commit | 5ff193fbde20df5d80fec367cea3e7856c057320 (patch) | |
| tree | 4d5d78e17f419b20d14bb5bc75a293f3cd4e95d5 /arch/x86/include | |
| parent | 2264d9c74dda1b6835ab7858204073547457dfd0 (diff) | |
| download | blackbird-obmc-linux-5ff193fbde20df5d80fec367cea3e7856c057320.tar.gz blackbird-obmc-linux-5ff193fbde20df5d80fec367cea3e7856c057320.zip | |
x86/intel_rdt: Add basic resctrl filesystem support
Use kernfs as basis for our user interface filesystem. This patch
supports mount/umount, and one mount parameter "cdp" to enable code/data
prioritization (though all we do at this point is ensure that the system
can support CDP). The file system is not populated yet in this patch.
[ tglx: Fixed up a few nits and added cdp handling in case of error ]
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Cc: "Ravi V Shankar" <ravi.v.shankar@intel.com>
Cc: "Tony Luck" <tony.luck@intel.com>
Cc: "Shaohua Li" <shli@fb.com>
Cc: "Sai Prakhya" <sai.praneeth.prakhya@intel.com>
Cc: "Peter Zijlstra" <peterz@infradead.org>
Cc: "Stephane Eranian" <eranian@google.com>
Cc: "Dave Hansen" <dave.hansen@intel.com>
Cc: "David Carrillo-Cisneros" <davidcc@google.com>
Cc: "Nilay Vaish" <nilayvaish@gmail.com>
Cc: "Vikas Shivappa" <vikas.shivappa@linux.intel.com>
Cc: "Ingo Molnar" <mingo@elte.hu>
Cc: "Borislav Petkov" <bp@suse.de>
Cc: "H. Peter Anvin" <h.peter.anvin@intel.com>
Link: http://lkml.kernel.org/r/1477692289-37412-4-git-send-email-fenghua.yu@intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/intel_rdt.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/x86/include/asm/intel_rdt.h b/arch/x86/include/asm/intel_rdt.h index c0d0a6e6448c..09d00e6f7ad6 100644 --- a/arch/x86/include/asm/intel_rdt.h +++ b/arch/x86/include/asm/intel_rdt.h @@ -1,9 +1,31 @@ #ifndef _ASM_X86_INTEL_RDT_H #define _ASM_X86_INTEL_RDT_H +#include <linux/jump_label.h> + +#define IA32_L3_QOS_CFG 0xc81 #define IA32_L3_CBM_BASE 0xc90 #define IA32_L2_CBM_BASE 0xd10 +#define L3_QOS_CDP_ENABLE 0x01ULL + +/** + * struct rdtgroup - store rdtgroup's data in resctrl file system. + * @kn: kernfs node + * @rdtgroup_list: linked list for all rdtgroups + * @closid: closid for this rdtgroup + */ +struct rdtgroup { + struct kernfs_node *kn; + struct list_head rdtgroup_list; + int closid; +}; + +/* List of all resource groups */ +extern struct list_head rdt_all_groups; + +int __init rdtgroup_init(void); + /** * struct rdt_resource - attributes of an RDT resource * @enabled: Is this feature enabled on this machine @@ -68,6 +90,10 @@ struct msr_param { extern struct mutex rdtgroup_mutex; extern struct rdt_resource rdt_resources_all[]; +extern struct rdtgroup rdtgroup_default; +DECLARE_STATIC_KEY_FALSE(rdt_enable_key); + +int __init rdtgroup_init(void); enum { RDT_RESOURCE_L3, |
