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s390/cpum_cf: remove function validate_ctr_auth() by inline code 

Remove function validate_ctr_auth() and replace this very small
function by its body.

No functional change.

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Acked-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Thomas Richter 2023-04-06 11:40:42 +02:00 committed by Vasily Gorbik
parent 9ae9b868ae
commit 1a33aee1dc
1 changed files with 9 additions and 22 deletions
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31
arch/s390/kernel/perf_cpum_cf.c
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@ -444,21 +444,6 @@ static int validate_ctr_version(const u64 config, enum cpumf_ctr_set set)
return err;
}
static int validate_ctr_auth(const struct hw_perf_event *hwc)
{
int err = -ENOENT;
/* Check authorization for cpu counter sets.
* If the particular CPU counter set is not authorized,
* return with -ENOENT in order to fall back to other
* PMUs that might suffice the event request.
*/
if ((hwc->config_base & cpumf_ctr_info.auth_ctl))
err = 0;
return err;
}
/*
* Change the CPUMF state to active.
* Enable and activate the CPU-counter sets according
@ -596,7 +581,6 @@ static int __hw_perf_event_init(struct perf_event *event, unsigned int type)
struct perf_event_attr *attr = &event->attr;
struct hw_perf_event *hwc = &event->hw;
enum cpumf_ctr_set set;
int err = 0;
u64 ev;
switch (type) {
@ -672,12 +656,15 @@ static int __hw_perf_event_init(struct perf_event *event, unsigned int type)
cpumf_hw_inuse();
event->destroy = hw_perf_event_destroy;
/* Finally, validate version and authorization of the counter set */
err = validate_ctr_auth(hwc);
if (!err)
err = validate_ctr_version(hwc->config, set);
return err;
/*
* Finally, validate version and authorization of the counter set.
* If the particular CPU counter set is not authorized,
* return with -ENOENT in order to fall back to other
* PMUs that might suffice the event request.
*/
if (!(hwc->config_base & cpumf_ctr_info.auth_ctl))
return -ENOENT;
return validate_ctr_version(hwc->config, set);
}
/* Events CPU_CYLCES and INSTRUCTIONS can be submitted with two different