s390/diag: add a statistic for diagnose calls

[linux-drm-fsl-dcu.git] / arch / s390 / kernel / smp.c

diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index c6355e6f3fcc990c98bdd4f80dfd1a8ac78a0e0b..f7db48b61dcfe11d786f2b518d193b9aa4d3ac45 100644 (file)
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -33,6 +33,7 @@
 #include <linux/crash_dump.h>
 #include <linux/memblock.h>
 #include <asm/asm-offsets.h>
+#include <asm/diag.h>
 #include <asm/switch_to.h>
 #include <asm/facility.h>
 #include <asm/ipl.h>
@@ -375,11 +376,14 @@ int smp_vcpu_scheduled(int cpu)
 
 void smp_yield_cpu(int cpu)
 {
-       if (MACHINE_HAS_DIAG9C)
+       if (MACHINE_HAS_DIAG9C) {
+               diag_stat_inc(DIAG_STAT_X09C);
                asm volatile("diag %0,0,0x9c"
                             : : "d" (pcpu_devices[cpu].address));
-       else if (MACHINE_HAS_DIAG44)
+       } else if (MACHINE_HAS_DIAG44) {
+               diag_stat_inc(DIAG_STAT_X044);
                asm volatile("diag 0,0,0x44");
+       }
 }
 
 /*