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s390/cpum_cf: make crypto counters upward compatible across machine types

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The CPU Measurement facility crypto counter set functionality
is defined by the Second Counter Version Number. This number
varies between machine types, but is upward compatible.
Lessen the checks to reflect this behavior.

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Acked-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
This commit is contained in:
Thomas Richter 2024-03-27 09:22:43 +01:00 committed by Alexander Gordeev
parent 4f00d4ef66
commit f10933cbd2
2 changed files with 4 additions and 9 deletions
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2
arch/s390/kernel/perf_cpum_cf.c
View file

@ -428,7 +428,7 @@ static void cpum_cf_make_setsize(enum cpumf_ctr_set ctrset)
case CPUMF_CTR_SET_CRYPTO:
if (cpumf_ctr_info.csvn >= 1 && cpumf_ctr_info.csvn <= 5)
ctrset_size = 16;
else if (cpumf_ctr_info.csvn == 6 || cpumf_ctr_info.csvn == 7)
else if (cpumf_ctr_info.csvn >= 6)
ctrset_size = 20;
break;
case CPUMF_CTR_SET_EXT:

11
arch/s390/kernel/perf_cpum_cf_events.c
View file

@ -855,16 +855,11 @@ __init const struct attribute_group **cpumf_cf_event_group(void)
}
/* Determine version specific crypto set */
switch (ci.csvn) {
case 1 ... 5:
csvn = none;
if (ci.csvn >= 1 && ci.csvn <= 5)
csvn = cpumcf_svn_12345_pmu_event_attr;
break;
case 6 ... 7:
else if (ci.csvn >= 6)
csvn = cpumcf_svn_67_pmu_event_attr;
break;
default:
csvn = none;
}
/* Determine model-specific counter set(s) */
get_cpu_id(&cpu_id);