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s390/pai_crypto: Rename paicrypt_getctr() to pai_getctr()

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To support one common PAI PMU device driver which handles
both PMUs pai_crypto and pai_ext, use a common naming scheme
for structures and variables suitable for both device drivers.

Rename paicrypt_getctr() to pai_getctr() to reflect is common
purpose. pai_getctr() now uses pai_pmu table to extract PAI PMU
characteristics such as kernel_offset inside the counter area page.
Also rename paicrypt_have_sample() to pai_have_sample().

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 15:38:50 +01:00 committed by Heiko Carstens
parent 42cd0c8242
commit 360e180d8b
1 changed files with 21 additions and 19 deletions
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40
arch/s390/kernel/perf_pai_crypto.c
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@ -152,10 +152,10 @@ static void pai_event_destroy(struct perf_event *event)
}
}
static u64 paicrypt_getctr(unsigned long *page, int nr, bool kernel)
static u64 pai_getctr(unsigned long *page, int nr, unsigned long offset)
{
if (kernel)
nr += PAI_CRYPTO_MAXCTR;
if (offset)
nr += offset / sizeof(*page);
return page[nr];
}
@ -172,13 +172,14 @@ static u64 pai_getdata(struct perf_event *event, bool kernel)
u64 sum = 0;
if (event->attr.config != pp->base) {
return paicrypt_getctr(cpump->area,
return pai_getctr(cpump->area,
event->attr.config - pp->base,
kernel);
kernel ? pp->kernel_offset : 0);
}
for (i = 1; i <= pp->num_avail; i++) {
u64 val = paicrypt_getctr(cpump->area, i, kernel);
u64 val = pai_getctr(cpump->area, i,
kernel ? pp->kernel_offset : 0);
if (!val)
continue;
@ -416,7 +417,7 @@ static int paicrypt_add(struct perf_event *event, int flags)
return 0;
}
static void paicrypt_have_sample(struct perf_event *, struct pai_map *);
static void pai_have_sample(struct perf_event *, struct pai_map *);
static void paicrypt_stop(struct perf_event *event, int flags)
{
struct pai_mapptr *mp = this_cpu_ptr(pai_root.mapptr);
@ -429,7 +430,7 @@ static void paicrypt_stop(struct perf_event *event, int flags)
perf_sched_cb_dec(event->pmu);
list_del(PAI_SWLIST(event));
} else {
paicrypt_have_sample(event, cpump);
pai_have_sample(event, cpump);
cpump->event = NULL;
}
}
@ -456,21 +457,21 @@ static void paicrypt_del(struct perf_event *event, int flags)
* 8 bytes: Value of counter
*/
static size_t paicrypt_copy(struct pai_userdata *userdata, unsigned long *page,
unsigned long *page_old, bool exclude_user,
bool exclude_kernel)
struct pai_pmu *pp, unsigned long *page_old,
bool exclude_user, bool exclude_kernel)
{
int i, outidx = 0;
for (i = 1; i <= paicrypt_cnt; i++) {
for (i = 1; i <= pp->num_avail; i++) {
u64 val = 0, val_old = 0;
if (!exclude_kernel) {
val += paicrypt_getctr(page, i, true);
val_old += paicrypt_getctr(page_old, i, true);
val += pai_getctr(page, i, pp->kernel_offset);
val_old += pai_getctr(page_old, i, pp->kernel_offset);
}
if (!exclude_user) {
val += paicrypt_getctr(page, i, false);
val_old += paicrypt_getctr(page_old, i, false);
val += pai_getctr(page, i, 0);
val_old += pai_getctr(page_old, i, 0);
}
if (val >= val_old)
val -= val_old;
@ -524,14 +525,15 @@ static int paicrypt_push_sample(size_t rawsize, struct pai_map *cpump,
}
/* Check if there is data to be saved on schedule out of a task. */
static void paicrypt_have_sample(struct perf_event *event,
struct pai_map *cpump)
static void pai_have_sample(struct perf_event *event, struct pai_map *cpump)
{
struct pai_pmu *pp;
size_t rawsize;
if (!event) /* No event active */
return;
rawsize = paicrypt_copy(cpump->save, cpump->area,
pp = &pai_pmu[PAI_PMU_IDX(event)];
rawsize = paicrypt_copy(cpump->save, cpump->area, pp,
(unsigned long *)PAI_SAVE_AREA(event),
event->attr.exclude_user,
event->attr.exclude_kernel);
@ -547,7 +549,7 @@ static void paicrypt_have_samples(void)
struct perf_event *event;
list_for_each_entry(event, &cpump->syswide_list, hw.tp_list)
paicrypt_have_sample(event, cpump);
pai_have_sample(event, cpump);
}
/* Called on schedule-in and schedule-out. No access to event structure,