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Revert "s390/cpum_sf: Remove WARN_ON_ONCE statements"

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This reverts commit 9c06859c81.
This commit is contained in:
Ksawlii 2024-11-24 00:22:59 +01:00
parent 923ea36cad
commit ec15971004
1 changed files with 8 additions and 4 deletions
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12
arch/s390/kernel/perf_cpum_sf.c
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@ -1432,7 +1432,7 @@ static int aux_output_begin(struct perf_output_handle *handle,
unsigned long head, base, offset;
struct hws_trailer_entry *te;
if (handle->head & ~PAGE_MASK)
if (WARN_ON_ONCE(handle->head & ~PAGE_MASK))
return -EINVAL;
aux->head = handle->head >> PAGE_SHIFT;
@ -1613,7 +1613,7 @@ static void hw_collect_aux(struct cpu_hw_sf *cpuhw)
unsigned long num_sdb;
aux = perf_get_aux(handle);
if (!aux)
if (WARN_ON_ONCE(!aux))
return;
/* Inform user space new data arrived */
@ -1635,7 +1635,7 @@ static void hw_collect_aux(struct cpu_hw_sf *cpuhw)
__func__);
break;
}
if (!aux)
if (WARN_ON_ONCE(!aux))
return;
/* Update head and alert_mark to new position */
@ -1870,8 +1870,12 @@ static void cpumsf_pmu_start(struct perf_event *event, int flags)
{
struct cpu_hw_sf *cpuhw = this_cpu_ptr(&cpu_hw_sf);
if (!(event->hw.state & PERF_HES_STOPPED))
if (WARN_ON_ONCE(!(event->hw.state & PERF_HES_STOPPED)))
return;
if (flags & PERF_EF_RELOAD)
WARN_ON_ONCE(!(event->hw.state & PERF_HES_UPTODATE));
perf_pmu_disable(event->pmu);
event->hw.state = 0;
cpuhw->lsctl.cs = 1;