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Commit 5f420c5b authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky
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[S390] oprofile: dont access lowcore 



The external interrupt parameter is passed as function call parameter.
No need to access lowcore.

Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
parent fcdd65b0

arch/s390/oprofile/hwsampler.c

+2 −9
Original line number Diff line number Diff line
@@ -675,18 +675,11 @@ int hwsampler_activate(unsigned int cpu) 
static void hws_ext_handler(unsigned int ext_int_code,

			    unsigned int param32, unsigned long param64)

{

	int cpu;

	struct hws_cpu_buffer *cb;



	kstat_cpu(smp_processor_id()).irqs[EXTINT_CPM]++;

	cpu = smp_processor_id();

	cb = &per_cpu(sampler_cpu_buffer, cpu);



	atomic_xchg(

			&cb->ext_params,

			atomic_read(&cb->ext_params)

				| S390_lowcore.ext_params);



	cb = &__get_cpu_var(sampler_cpu_buffer);

	atomic_xchg(&cb->ext_params, atomic_read(&cb->ext_params) | param32);

	if (hws_wq)

		queue_work(hws_wq, &cb->worker);

}