x86/intel_rdt: Create character device exposing pseudo-locked region

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After a pseudo-locked region is created it needs to be made
available to user space for usage.

A character device supporting mmap() is created for each pseudo-locked
region. A user space application can now use mmap() system call to map
pseudo-locked region into its virtual address space.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: fenghua.yu@intel.com
Cc: tony.luck@intel.com
Cc: vikas.shivappa@linux.intel.com
Cc: gavin.hindman@intel.com
Cc: jithu.joseph@intel.com
Cc: dave.hansen@intel.com
Cc: hpa@zytor.com
Link: https://lkml.kernel.org/r/fccbb9b20f07655ab0a4df9fa1c1babc0288aea0.1529706536.git.reinette.chatre@intel.com

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Reinette Chatre 2018-06-22 15:42:27 -07:00 • committed by Thomas Gleixner

parent 443810fe61

commit 746e08590b

3 changed files with 291 additions and 9 deletions

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14

arch/x86/kernel/cpu/intel_rdt.h

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285

arch/x86/kernel/cpu/intel_rdt_pseudo_lock.c

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1

arch/x86/kernel/cpu/intel_rdt_rdtgroup.c

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