[S390] oprofile: dont access lowcore

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>

1 files changed, 2 insertions, 9 deletions

diff --git a/arch/s390/oprofile/hwsampler.c b/arch/s390/oprofile/hwsampler.c
index cb4338ccbf7b..053caa0fd276 100644
--- a/arch/s390/oprofile/hwsampler.c
+++ b/arch/s390/oprofile/hwsampler.c
@@ -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);
 }