x86/intel_rdt: Modify the intel_pqr_state for better performance

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Currently we have pqr_state and rdt_default_state which store the cached
CLOSID/RMIDs and the user configured cpu default values respectively. We
touch both of these during context switch. Put all of them in one
structure so that we can spare a cache line.

Reported-by: Thomas Gleixner <tglx@linutronix.de>
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: sai.praneeth.prakhya@intel.com
Cc: ak@linux.intel.com
Cc: davidcc@google.com
Link: http://lkml.kernel.org/r/1502304395-7166-3-git-send-email-vikas.shivappa@linux.intel.com

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Vikas Shivappa 2017-08-09 11:46:34 -07:00 • committed by Thomas Gleixner

parent eda61c265f

commit a9110b552d

3 changed files with 26 additions and 24 deletions

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30

arch/x86/include/asm/intel_rdt_sched.h

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10

arch/x86/kernel/cpu/intel_rdt.c

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10

arch/x86/kernel/cpu/intel_rdt_rdtgroup.c

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