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s390/pai_crypto: Rename member paicrypt_map::page

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Rename member page in struct paicrypt_map to area. This rename
creates consistent naming for both PMU drivers paicrypto and PMU
paiext. No functional change.

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 15:38:41 +01:00
committed by Heiko Carstens
parent abc524caa1
commit c124208b74
1 changed files with 10 additions and 10 deletions
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20
arch/s390/kernel/perf_pai_crypto.c
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@@ -31,7 +31,7 @@ struct pai_userdata {
} __packed;
struct paicrypt_map {
unsigned long *page; /* Page for CPU to store counters */
unsigned long *area; /* Area for CPU to store counters */
struct pai_userdata *save; /* Page to store no-zero counters */
unsigned int active_events; /* # of PAI crypto users */
refcount_t refcnt; /* Reference count mapped buffers */
@@ -83,7 +83,7 @@ static DEFINE_MUTEX(pai_reserve_mutex);
/* Free all memory allocated for event counting/sampling setup */
static void paicrypt_free(struct paicrypt_mapptr *mp)
{
free_page((unsigned long)mp->mapptr->page);
free_page((unsigned long)mp->mapptr->area);
kvfree(mp->mapptr->save);
kfree(mp->mapptr);
mp->mapptr = NULL;
@@ -143,13 +143,13 @@ static u64 paicrypt_getdata(struct perf_event *event, bool kernel)
int i;
if (event->attr.config != PAI_CRYPTO_BASE) {
return paicrypt_getctr(cpump->page,
return paicrypt_getctr(cpump->area,
event->attr.config - PAI_CRYPTO_BASE,
kernel);
}
for (i = 1; i <= paicrypt_cnt; i++) {
u64 val = paicrypt_getctr(cpump->page, i, kernel);
u64 val = paicrypt_getctr(cpump->area, i, kernel);
if (!val)
continue;
@@ -201,11 +201,11 @@ static int paicrypt_alloc_cpu(struct perf_event *event, int cpu)
* Only the first counting event has to allocate a page.
*/
mp->mapptr = cpump;
cpump->page = (unsigned long *)get_zeroed_page(GFP_KERNEL);
cpump->area = (unsigned long *)get_zeroed_page(GFP_KERNEL);
cpump->save = kvmalloc_array(paicrypt_cnt + 1,
sizeof(struct pai_userdata),
GFP_KERNEL);
if (!cpump->page || !cpump->save) {
if (!cpump->area || !cpump->save) {
paicrypt_free(mp);
goto undo;
}
@@ -334,7 +334,7 @@ static void paicrypt_start(struct perf_event *event, int flags)
sum = paicrypt_getall(event); /* Get current value */
local64_set(&event->hw.prev_count, sum);
} else { /* Sampling */
memcpy((void *)PAI_SAVE_AREA(event), cpump->page, PAGE_SIZE);
memcpy((void *)PAI_SAVE_AREA(event), cpump->area, PAGE_SIZE);
/* Enable context switch callback for system-wide sampling */
if (!(event->attach_state & PERF_ATTACH_TASK)) {
list_add_tail(PAI_SWLIST(event), &cpump->syswide_list);
@@ -352,7 +352,7 @@ static int paicrypt_add(struct perf_event *event, int flags)
unsigned long ccd;
if (++cpump->active_events == 1) {
ccd = virt_to_phys(cpump->page) | PAI_CRYPTO_KERNEL_OFFSET;
ccd = virt_to_phys(cpump->area) | PAI_CRYPTO_KERNEL_OFFSET;
WRITE_ONCE(get_lowcore()->ccd, ccd);
local_ctl_set_bit(0, CR0_CRYPTOGRAPHY_COUNTER_BIT);
}
@@ -465,7 +465,7 @@ static int paicrypt_push_sample(size_t rawsize, struct paicrypt_map *cpump,
overflow = perf_event_overflow(event, &data, &regs);
perf_event_update_userpage(event);
/* Save crypto counter lowcore page after reading event data. */
memcpy((void *)PAI_SAVE_AREA(event), cpump->page, PAGE_SIZE);
memcpy((void *)PAI_SAVE_AREA(event), cpump->area, PAGE_SIZE);
return overflow;
}
@@ -477,7 +477,7 @@ static void paicrypt_have_sample(struct perf_event *event,
if (!event) /* No event active */
return;
rawsize = paicrypt_copy(cpump->save, cpump->page,
rawsize = paicrypt_copy(cpump->save, cpump->area,
(unsigned long *)PAI_SAVE_AREA(event),
event->attr.exclude_user,
event->attr.exclude_kernel);