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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2015-08-20 17:28:44 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2015-10-14 14:32:06 +0200
commit1ec2772e0c3ca3159035c03165355e355efc326b (patch)
tree469be3ba9032d367e4a796d6a31b25ccaab0d06a /arch/s390/include/asm
parentacdc9fc9a8121ce2ebcd7533bd72852c20b353f3 (diff)
s390/diag: add a statistic for diagnose calls
Introduce /sys/debug/kernel/diag_stat with a statistic how many diagnose calls have been done by each CPU in the system. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm')
-rw-r--r--arch/s390/include/asm/appldata.h2
-rw-r--r--arch/s390/include/asm/diag.h37
-rw-r--r--arch/s390/include/asm/kvm_para.h67
3 files changed, 97 insertions, 9 deletions
diff --git a/arch/s390/include/asm/appldata.h b/arch/s390/include/asm/appldata.h
index 16887c5fd989..a6263d4e8e56 100644
--- a/arch/s390/include/asm/appldata.h
+++ b/arch/s390/include/asm/appldata.h
@@ -7,6 +7,7 @@
#ifndef _ASM_S390_APPLDATA_H
#define _ASM_S390_APPLDATA_H
+#include <asm/diag.h>
#include <asm/io.h>
#define APPLDATA_START_INTERVAL_REC 0x80
@@ -53,6 +54,7 @@ static inline int appldata_asm(struct appldata_product_id *id,
parm_list.buffer_length = length;
parm_list.product_id_addr = (unsigned long) id;
parm_list.buffer_addr = virt_to_phys(buffer);
+ diag_stat_inc(DIAG_STAT_X0DC);
asm volatile(
" diag %1,%0,0xdc"
: "=d" (ry)
diff --git a/arch/s390/include/asm/diag.h b/arch/s390/include/asm/diag.h
index 7e91c58072e2..e423cfcaf77d 100644
--- a/arch/s390/include/asm/diag.h
+++ b/arch/s390/include/asm/diag.h
@@ -8,6 +8,42 @@
#ifndef _ASM_S390_DIAG_H
#define _ASM_S390_DIAG_H
+#include <linux/percpu.h>
+
+enum diag_stat_enum {
+ DIAG_STAT_X008,
+ DIAG_STAT_X00C,
+ DIAG_STAT_X010,
+ DIAG_STAT_X014,
+ DIAG_STAT_X044,
+ DIAG_STAT_X064,
+ DIAG_STAT_X09C,
+ DIAG_STAT_X0DC,
+ DIAG_STAT_X204,
+ DIAG_STAT_X210,
+ DIAG_STAT_X224,
+ DIAG_STAT_X250,
+ DIAG_STAT_X258,
+ DIAG_STAT_X288,
+ DIAG_STAT_X2C4,
+ DIAG_STAT_X2FC,
+ DIAG_STAT_X304,
+ DIAG_STAT_X308,
+ DIAG_STAT_X500,
+ NR_DIAG_STAT
+};
+
+struct diag_stat {
+ unsigned int counter[NR_DIAG_STAT];
+};
+
+DECLARE_PER_CPU(struct diag_stat, diag_stat);
+
+static inline void diag_stat_inc(enum diag_stat_enum nr)
+{
+ this_cpu_inc(diag_stat.counter[nr]);
+}
+
/*
* Diagnose 10: Release page range
*/
@@ -18,6 +54,7 @@ static inline void diag10_range(unsigned long start_pfn, unsigned long num_pfn)
start_addr = start_pfn << PAGE_SHIFT;
end_addr = (start_pfn + num_pfn - 1) << PAGE_SHIFT;
+ diag_stat_inc(DIAG_STAT_X010);
asm volatile(
"0: diag %0,%1,0x10\n"
"1:\n"
diff --git a/arch/s390/include/asm/kvm_para.h b/arch/s390/include/asm/kvm_para.h
index e0f842308a68..41393052ac57 100644
--- a/arch/s390/include/asm/kvm_para.h
+++ b/arch/s390/include/asm/kvm_para.h
@@ -27,10 +27,9 @@
#define __S390_KVM_PARA_H
#include <uapi/asm/kvm_para.h>
+#include <asm/diag.h>
-
-
-static inline long kvm_hypercall0(unsigned long nr)
+static inline long __kvm_hypercall0(unsigned long nr)
{
register unsigned long __nr asm("1") = nr;
register long __rc asm("2");
@@ -40,7 +39,13 @@ static inline long kvm_hypercall0(unsigned long nr)
return __rc;
}
-static inline long kvm_hypercall1(unsigned long nr, unsigned long p1)
+static inline long kvm_hypercall0(unsigned long nr)
+{
+ diag_stat_inc(DIAG_STAT_X500);
+ return __kvm_hypercall0(nr);
+}
+
+static inline long __kvm_hypercall1(unsigned long nr, unsigned long p1)
{
register unsigned long __nr asm("1") = nr;
register unsigned long __p1 asm("2") = p1;
@@ -51,7 +56,13 @@ static inline long kvm_hypercall1(unsigned long nr, unsigned long p1)
return __rc;
}
-static inline long kvm_hypercall2(unsigned long nr, unsigned long p1,
+static inline long kvm_hypercall1(unsigned long nr, unsigned long p1)
+{
+ diag_stat_inc(DIAG_STAT_X500);
+ return __kvm_hypercall1(nr, p1);
+}
+
+static inline long __kvm_hypercall2(unsigned long nr, unsigned long p1,
unsigned long p2)
{
register unsigned long __nr asm("1") = nr;
@@ -65,7 +76,14 @@ static inline long kvm_hypercall2(unsigned long nr, unsigned long p1,
return __rc;
}
-static inline long kvm_hypercall3(unsigned long nr, unsigned long p1,
+static inline long kvm_hypercall2(unsigned long nr, unsigned long p1,
+ unsigned long p2)
+{
+ diag_stat_inc(DIAG_STAT_X500);
+ return __kvm_hypercall2(nr, p1, p2);
+}
+
+static inline long __kvm_hypercall3(unsigned long nr, unsigned long p1,
unsigned long p2, unsigned long p3)
{
register unsigned long __nr asm("1") = nr;
@@ -80,8 +98,14 @@ static inline long kvm_hypercall3(unsigned long nr, unsigned long p1,
return __rc;
}
+static inline long kvm_hypercall3(unsigned long nr, unsigned long p1,
+ unsigned long p2, unsigned long p3)
+{
+ diag_stat_inc(DIAG_STAT_X500);
+ return __kvm_hypercall3(nr, p1, p2, p3);
+}
-static inline long kvm_hypercall4(unsigned long nr, unsigned long p1,
+static inline long __kvm_hypercall4(unsigned long nr, unsigned long p1,
unsigned long p2, unsigned long p3,
unsigned long p4)
{
@@ -98,7 +122,15 @@ static inline long kvm_hypercall4(unsigned long nr, unsigned long p1,
return __rc;
}
-static inline long kvm_hypercall5(unsigned long nr, unsigned long p1,
+static inline long kvm_hypercall4(unsigned long nr, unsigned long p1,
+ unsigned long p2, unsigned long p3,
+ unsigned long p4)
+{
+ diag_stat_inc(DIAG_STAT_X500);
+ return __kvm_hypercall4(nr, p1, p2, p3, p4);
+}
+
+static inline long __kvm_hypercall5(unsigned long nr, unsigned long p1,
unsigned long p2, unsigned long p3,
unsigned long p4, unsigned long p5)
{
@@ -116,7 +148,15 @@ static inline long kvm_hypercall5(unsigned long nr, unsigned long p1,
return __rc;
}
-static inline long kvm_hypercall6(unsigned long nr, unsigned long p1,
+static inline long kvm_hypercall5(unsigned long nr, unsigned long p1,
+ unsigned long p2, unsigned long p3,
+ unsigned long p4, unsigned long p5)
+{
+ diag_stat_inc(DIAG_STAT_X500);
+ return __kvm_hypercall5(nr, p1, p2, p3, p4, p5);
+}
+
+static inline long __kvm_hypercall6(unsigned long nr, unsigned long p1,
unsigned long p2, unsigned long p3,
unsigned long p4, unsigned long p5,
unsigned long p6)
@@ -137,6 +177,15 @@ static inline long kvm_hypercall6(unsigned long nr, unsigned long p1,
return __rc;
}
+static inline long kvm_hypercall6(unsigned long nr, unsigned long p1,
+ unsigned long p2, unsigned long p3,
+ unsigned long p4, unsigned long p5,
+ unsigned long p6)
+{
+ diag_stat_inc(DIAG_STAT_X500);
+ return __kvm_hypercall6(nr, p1, p2, p3, p4, p5, p6);
+}
+
/* kvm on s390 is always paravirtualization enabled */
static inline int kvm_para_available(void)
{

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