s390/cpum_cf: introduce kernel_cpumcf_alert() to obtain measurement alerts

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During a __kernel_cpumcf_begin()/end() session, save measurement alerts
for the counter facility in the per-CPU cpu_cf_events variable.
Users can obtain and, optionally, clear the alerts by calling
kernel_cpumcf_alert() to specifically handle alerts.

Signed-off-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Hendrik Brueckner 2018-08-08 10:30:37 +02:00 • committed by Martin Schwidefsky

parent f944bcdf5b

commit 26b8317f51

2 changed files with 20 additions and 0 deletions

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2

arch/s390/include/asm/cpu_mcf.h

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18

arch/s390/kernel/perf_cpum_cf.c

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