s390/pai_crypto: Add PAI crypto characteristics table for parameters

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Create and add a PMU characteristics table to store the parameters
of the PAI crypto PMU. This table contains PMU details such as
 - number of available counters
 - name of these counters to export to /sysfs
 - Size of the memory mapped counter area
 - base number of first counter
 - etc

Also define a PMU specific initialization function to be called when
a PAI PMU feature is supported. At device driver initialization
test these features and if available use instruction qpaci to
retrieve the number of available counters. Also export these counter
names to /sysfs and register this PMU.

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: Jan Polensky <japo@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

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Thomas Richter 2025-11-05 15:38:46 +01:00 • committed by Heiko Carstens

parent 387c7b5f04

commit a3f8423622

1 changed files with 137 additions and 49 deletions

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arch/s390/kernel/perf_pai_crypto.c

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