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s390/pai_crypto: Introduce PAI crypto specific event delete function

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Introduce PAI crypto specific event delete function to handle
additional actions to be done at event removal.

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>
This commit is contained in:
Thomas Richter 2025-11-05 15:39:00 +01:00 committed by Heiko Carstens
parent 35a27bad07
commit 3abb6b1675
1 changed files with 7 additions and 2 deletions
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9
arch/s390/kernel/perf_pai_crypto.c
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@ -138,7 +138,6 @@ static void pai_event_destroy(struct perf_event *event)
{
int cpu;
static_branch_dec(&pai_key);
free_page(PAI_SAVE_AREA(event));
if (event->cpu == -1) {
struct cpumask *mask = PAI_CPU_MASK(event);
@ -151,6 +150,12 @@ static void pai_event_destroy(struct perf_event *event)
}
}
static void paicrypt_event_destroy(struct perf_event *event)
{
static_branch_dec(&pai_key);
pai_event_destroy(event);
}
static u64 pai_getctr(unsigned long *page, int nr, unsigned long offset)
{
if (offset)
@ -360,7 +365,7 @@ static int paicrypt_event_init(struct perf_event *event)
int rc = pai_event_init(event, PAI_PMU_CRYPTO);
if (!rc) {
event->destroy = pai_event_destroy;
event->destroy = paicrypt_event_destroy;
static_branch_inc(&pai_key);
}
return rc;