x86/intel_rdt: Implement "update" mode when writing schemata file

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The schemata file can have multiple lines and it is cumbersome to update
all lines.

Remove code that requires that the user provides values for every resource
(in the right order).  If the user provides values for just a few
resources, update them and leave the rest unchanged.

Side benefit: we now check which values were updated and only send IPIs to
cpus that actually have updates.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Vikas Shivappa <vikas.shivappa@linux.intel.com>
Tested-by: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
Cc: ravi.v.shankar@intel.com
Cc: fenghua.yu@intel.com
Cc: peterz@infradead.org
Cc: vikas.shivappa@intel.com
Cc: h.peter.anvin@intel.com
Link: http://lkml.kernel.org/r/1491255857-17213-3-git-send-email-vikas.shivappa@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

...

This commit is contained in:

Tony Luck 2017-04-03 14:44:16 -07:00 • committed by Thomas Gleixner

parent 6415813bae

commit c4026b7b95

4 changed files with 51 additions and 51 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

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14

Documentation/x86/intel_rdt_ui.txt

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10

arch/x86/include/asm/intel_rdt.h

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2

arch/x86/kernel/cpu/intel_rdt.c

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78

arch/x86/kernel/cpu/intel_rdt_schemata.c

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