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[S390] oprofile: dont access lowcore

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

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
This commit is contained in:
Heiko Carstens 2011-05-23 10:24:49 +02:00 committed by Martin Schwidefsky
parent fcdd65b0e7
commit 5f420c5bd1
1 changed files with 2 additions and 9 deletions
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11
arch/s390/oprofile/hwsampler.c
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@ -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);
}