Commit 455adb31 authored by David S. Miller's avatar David S. Miller

sparc: Throttle perf events properly.

Like x86 and arm, call perf_sample_event_took() in perf event
NMI interrupt handler.
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent cfdc3170
......@@ -24,6 +24,7 @@
#include <asm/cpudata.h>
#include <linux/uaccess.h>
#include <linux/atomic.h>
#include <linux/sched/clock.h>
#include <asm/nmi.h>
#include <asm/pcr.h>
#include <asm/cacheflush.h>
......@@ -1612,6 +1613,8 @@ static int __kprobes perf_event_nmi_handler(struct notifier_block *self,
struct perf_sample_data data;
struct cpu_hw_events *cpuc;
struct pt_regs *regs;
u64 finish_clock;
u64 start_clock;
int i;
if (!atomic_read(&active_events))
......@@ -1625,6 +1628,8 @@ static int __kprobes perf_event_nmi_handler(struct notifier_block *self,
return NOTIFY_DONE;
}
start_clock = sched_clock();
regs = args->regs;
cpuc = this_cpu_ptr(&cpu_hw_events);
......@@ -1663,6 +1668,10 @@ static int __kprobes perf_event_nmi_handler(struct notifier_block *self,
sparc_pmu_stop(event, 0);
}
finish_clock = sched_clock();
perf_sample_event_took(finish_clock - start_clock);
return NOTIFY_STOP;
}
......
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