Commit 1ec2772e authored by Martin Schwidefsky's avatar Martin Schwidefsky

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: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent acdc9fc9
......@@ -15,6 +15,7 @@
#include <linux/string.h>
#include <linux/vmalloc.h>
#include <linux/mm.h>
#include <asm/diag.h>
#include <asm/ebcdic.h>
#include "hypfs.h"
......@@ -336,7 +337,7 @@ static inline __u64 phys_cpu__ctidx(enum diag204_format type, void *hdr)
/* Diagnose 204 functions */
static int diag204(unsigned long subcode, unsigned long size, void *addr)
static inline int __diag204(unsigned long subcode, unsigned long size, void *addr)
{
register unsigned long _subcode asm("0") = subcode;
register unsigned long _size asm("1") = size;
......@@ -351,6 +352,12 @@ static int diag204(unsigned long subcode, unsigned long size, void *addr)
return _size;
}
static int diag204(unsigned long subcode, unsigned long size, void *addr)
{
diag_stat_inc(DIAG_STAT_X204);
return __diag204(subcode, size, addr);
}
/*
* For the old diag subcode 4 with simple data format we have to use real
* memory. If we use subcode 6 or 7 with extended data format, we can (and
......@@ -505,6 +512,7 @@ static int diag224(void *ptr)
{
int rc = -EOPNOTSUPP;
diag_stat_inc(DIAG_STAT_X224);
asm volatile(
" diag %1,%2,0x224\n"
"0: lhi %0,0x0\n"
......
......@@ -8,6 +8,7 @@
#include <linux/slab.h>
#include <linux/cpu.h>
#include <asm/diag.h>
#include <asm/hypfs.h>
#include "hypfs.h"
......@@ -18,6 +19,7 @@
*/
static void diag0c(struct hypfs_diag0c_entry *entry)
{
diag_stat_inc(DIAG_STAT_X00C);
asm volatile (
" sam31\n"
" diag %0,%0,0x0c\n"
......
......@@ -13,6 +13,7 @@
#include <linux/types.h>
#include <linux/uaccess.h>
#include <asm/compat.h>
#include <asm/diag.h>
#include <asm/sclp.h>
#include "hypfs.h"
......@@ -22,7 +23,7 @@
#define DIAG304_CMD_MAX 2
static unsigned long hypfs_sprp_diag304(void *data, unsigned long cmd)
static inline unsigned long __hypfs_sprp_diag304(void *data, unsigned long cmd)
{
register unsigned long _data asm("2") = (unsigned long) data;
register unsigned long _rc asm("3");
......@@ -34,6 +35,12 @@ static unsigned long hypfs_sprp_diag304(void *data, unsigned long cmd)
return _rc;
}
static unsigned long hypfs_sprp_diag304(void *data, unsigned long cmd)
{
diag_stat_inc(DIAG_STAT_X304);
return __hypfs_sprp_diag304(data, cmd);
}
static void hypfs_sprp_free(const void *data)
{
free_page((unsigned long) data);
......
......@@ -9,6 +9,7 @@
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/vmalloc.h>
#include <asm/diag.h>
#include <asm/ebcdic.h>
#include <asm/timex.h>
#include "hypfs.h"
......@@ -66,6 +67,7 @@ static int diag2fc(int size, char* query, void *addr)
memset(parm_list.aci_grp, 0x40, NAME_LEN);
rc = -1;
diag_stat_inc(DIAG_STAT_X2FC);
asm volatile(
" diag %0,%1,0x2fc\n"
"0:\n"
......
......@@ -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)
......
......@@ -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"
......
......@@ -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)
{
......
......@@ -14,6 +14,7 @@
#include <linux/spinlock.h>
#include <linux/stddef.h>
#include <linux/string.h>
#include <asm/diag.h>
#include <asm/ebcdic.h>
#include <asm/cpcmd.h>
#include <asm/io.h>
......@@ -70,6 +71,7 @@ int __cpcmd(const char *cmd, char *response, int rlen, int *response_code)
memcpy(cpcmd_buf, cmd, cmdlen);
ASCEBC(cpcmd_buf, cmdlen);
diag_stat_inc(DIAG_STAT_X008);
if (response) {
memset(response, 0, rlen);
response_len = rlen;
......
......@@ -6,12 +6,119 @@
*/
#include <linux/module.h>
#include <linux/cpu.h>
#include <linux/seq_file.h>
#include <linux/debugfs.h>
#include <asm/diag.h>
DEFINE_PER_CPU(struct diag_stat, diag_stat);
EXPORT_PER_CPU_SYMBOL(diag_stat);
struct diag_desc {
int code;
char *name;
};
static const struct diag_desc diag_map[NR_DIAG_STAT] = {
[DIAG_STAT_X008] = { .code = 0x008, .name = "Console Function" },
[DIAG_STAT_X00C] = { .code = 0x00c, .name = "Pseudo Timer" },
[DIAG_STAT_X010] = { .code = 0x010, .name = "Release Pages" },
[DIAG_STAT_X014] = { .code = 0x014, .name = "Spool File Services" },
[DIAG_STAT_X044] = { .code = 0x044, .name = "Voluntary Timeslice End" },
[DIAG_STAT_X064] = { .code = 0x064, .name = "NSS Manipulation" },
[DIAG_STAT_X09C] = { .code = 0x09c, .name = "Relinquish Timeslice" },
[DIAG_STAT_X0DC] = { .code = 0x0dc, .name = "Appldata Control" },
[DIAG_STAT_X204] = { .code = 0x204, .name = "Logical-CPU Utilization" },
[DIAG_STAT_X210] = { .code = 0x210, .name = "Device Information" },
[DIAG_STAT_X224] = { .code = 0x224, .name = "EBCDIC-Name Table" },
[DIAG_STAT_X250] = { .code = 0x250, .name = "Block I/O" },
[DIAG_STAT_X258] = { .code = 0x258, .name = "Page-Reference Services" },
[DIAG_STAT_X288] = { .code = 0x288, .name = "Time Bomb" },
[DIAG_STAT_X2C4] = { .code = 0x2c4, .name = "FTP Services" },
[DIAG_STAT_X2FC] = { .code = 0x2fc, .name = "Guest Performance Data" },
[DIAG_STAT_X304] = { .code = 0x304, .name = "Partition-Resource Service" },
[DIAG_STAT_X308] = { .code = 0x308, .name = "List-Directed IPL" },
[DIAG_STAT_X500] = { .code = 0x500, .name = "Virtio Service" },
};
static int show_diag_stat(struct seq_file *m, void *v)
{
struct diag_stat *stat;
unsigned long n = (unsigned long) v - 1;
int cpu, prec, tmp;
get_online_cpus();
if (n == 0) {
seq_puts(m, " ");
for_each_online_cpu(cpu) {
prec = 10;
for (tmp = 10; cpu >= tmp; tmp *= 10)
prec--;
seq_printf(m, "%*s%d", prec, "CPU", cpu);
}
seq_putc(m, '\n');
} else if (n <= NR_DIAG_STAT) {
seq_printf(m, "diag %03x:", diag_map[n-1].code);
for_each_online_cpu(cpu) {
stat = &per_cpu(diag_stat, cpu);
seq_printf(m, " %10u", stat->counter[n-1]);
}
seq_printf(m, " %s\n", diag_map[n-1].name);
}
put_online_cpus();
return 0;
}
static void *show_diag_stat_start(struct seq_file *m, loff_t *pos)
{
return *pos <= nr_cpu_ids ? (void *)((unsigned long) *pos + 1) : NULL;
}
static void *show_diag_stat_next(struct seq_file *m, void *v, loff_t *pos)
{
++*pos;
return show_diag_stat_start(m, pos);
}
static void show_diag_stat_stop(struct seq_file *m, void *v)
{
}
static const struct seq_operations show_diag_stat_sops = {
.start = show_diag_stat_start,
.next = show_diag_stat_next,
.stop = show_diag_stat_stop,
.show = show_diag_stat,
};
static int show_diag_stat_open(struct inode *inode, struct file *file)
{
return seq_open(file, &show_diag_stat_sops);
}
static const struct file_operations show_diag_stat_fops = {
.open = show_diag_stat_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
};
static int __init show_diag_stat_init(void)
{
debugfs_create_file("diag_stat", 0400, NULL, NULL,
&show_diag_stat_fops);
return 0;
}
device_initcall(show_diag_stat_init);
/*
* Diagnose 14: Input spool file manipulation
*/
int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode)
static inline int __diag14(unsigned long rx, unsigned long ry1,
unsigned long subcode)
{
register unsigned long _ry1 asm("2") = ry1;
register unsigned long _ry2 asm("3") = subcode;
......@@ -29,6 +136,12 @@ int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode)
return rc;
}
int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode)
{
diag_stat_inc(DIAG_STAT_X014);
return __diag14(rx, ry1, subcode);
}
EXPORT_SYMBOL(diag14);
/*
......@@ -48,6 +161,7 @@ int diag210(struct diag210 *addr)
spin_lock_irqsave(&diag210_lock, flags);
diag210_tmp = *addr;
diag_stat_inc(DIAG_STAT_X210);
asm volatile(
" lhi %0,-1\n"
" sam31\n"
......
......@@ -17,6 +17,7 @@
#include <linux/pfn.h>
#include <linux/uaccess.h>
#include <linux/kernel.h>
#include <asm/diag.h>
#include <asm/ebcdic.h>
#include <asm/ipl.h>
#include <asm/lowcore.h>
......@@ -286,6 +287,7 @@ static __init void detect_diag9c(void)
int rc;
cpu_address = stap();
diag_stat_inc(DIAG_STAT_X09C);
asm volatile(
" diag %2,0,0x9c\n"
"0: la %0,0\n"
......@@ -300,6 +302,7 @@ static __init void detect_diag44(void)
{
int rc;
diag_stat_inc(DIAG_STAT_X044);
asm volatile(
" diag 0,0,0x44\n"
"0: la %0,0\n"
......
......@@ -17,6 +17,7 @@
#include <linux/gfp.h>
#include <linux/crash_dump.h>
#include <linux/debug_locks.h>
#include <asm/diag.h>
#include <asm/ipl.h>
#include <asm/smp.h>
#include <asm/setup.h>
......@@ -165,7 +166,7 @@ static struct ipl_parameter_block *dump_block_ccw;
static struct sclp_ipl_info sclp_ipl_info;
int diag308(unsigned long subcode, void *addr)
static inline int __diag308(unsigned long subcode, void *addr)
{
register unsigned long _addr asm("0") = (unsigned long) addr;
register unsigned long _rc asm("1") = 0;
......@@ -178,6 +179,12 @@ int diag308(unsigned long subcode, void *addr)
: "d" (subcode) : "cc", "memory");
return _rc;
}
int diag308(unsigned long subcode, void *addr)
{
diag_stat_inc(DIAG_STAT_X308);
return __diag308(subcode, addr);
}
EXPORT_SYMBOL_GPL(diag308);
/* SYSFS */
......
......@@ -11,6 +11,7 @@
#include <linux/seq_file.h>
#include <linux/delay.h>
#include <linux/cpu.h>
#include <asm/diag.h>
#include <asm/elf.h>
#include <asm/lowcore.h>
#include <asm/param.h>
......@@ -20,8 +21,10 @@ static DEFINE_PER_CPU(struct cpuid, cpu_id);
void notrace cpu_relax(void)
{
if (!smp_cpu_mtid && MACHINE_HAS_DIAG44)
if (!smp_cpu_mtid && MACHINE_HAS_DIAG44) {
diag_stat_inc(DIAG_STAT_X044);
asm volatile("diag 0,0,0x44");
}
barrier();
}
EXPORT_SYMBOL(cpu_relax);
......
......@@ -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");
}
}
/*
......
......@@ -18,6 +18,7 @@
#include <linux/bootmem.h>
#include <linux/ctype.h>
#include <linux/ioport.h>
#include <asm/diag.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/ebcdic.h>
......@@ -112,6 +113,7 @@ dcss_set_subcodes(void)
ry = DCSS_FINDSEGX;
strcpy(name, "dummy");
diag_stat_inc(DIAG_STAT_X064);
asm volatile(
" diag %0,%1,0x64\n"
"0: ipm %2\n"
......@@ -205,6 +207,7 @@ dcss_diag(int *func, void *parameter,
ry = (unsigned long) *func;
/* 64-bit Diag x'64' new subcode, keep in 64-bit addressing mode */
diag_stat_inc(DIAG_STAT_X064);
if (*func > DCSS_SEGEXT)
asm volatile(
" diag %0,%1,0x64\n"
......
......@@ -30,6 +30,7 @@
#include <linux/uaccess.h>
#include <linux/hugetlb.h>
#include <asm/asm-offsets.h>
#include <asm/diag.h>
#include <asm/pgtable.h>
#include <asm/irq.h>
#include <asm/mmu_context.h>
......@@ -597,6 +598,7 @@ int pfault_init(void)
if (pfault_disable)
return -1;
diag_stat_inc(DIAG_STAT_X258);
asm volatile(
" diag %1,%0,0x258\n"
"0: j 2f\n"
......@@ -618,6 +620,7 @@ void pfault_fini(void)
if (pfault_disable)
return;
diag_stat_inc(DIAG_STAT_X258);
asm volatile(
" diag %0,0,0x258\n"
"0:\n"
......
......@@ -21,6 +21,7 @@
#include <asm/dasd.h>
#include <asm/debug.h>
#include <asm/diag.h>
#include <asm/ebcdic.h>
#include <asm/io.h>
#include <asm/irq.h>
......@@ -76,6 +77,7 @@ static inline int dia250(void *iob, int cmd)
int rc;
rc = 3;
diag_stat_inc(DIAG_STAT_X250);
asm volatile(
" diag 2,%2,0x250\n"
"0: ipm %0\n"
......
......@@ -15,6 +15,7 @@
#include <linux/wait.h>
#include <linux/string.h>
#include <asm/ctl_reg.h>
#include <asm/diag.h>
#include "hmcdrv_ftp.h"
#include "diag_ftp.h"
......@@ -102,6 +103,7 @@ static int diag_ftp_2c4(struct diag_ftp_ldfpl *fpl,
{
int rc;
diag_stat_inc(DIAG_STAT_X2C4);
asm volatile(
" diag %[addr],%[cmd],0x2c4\n"
"0: j 2f\n"
......
......@@ -28,6 +28,7 @@
#include <linux/io.h>
#include <linux/kvm_para.h>
#include <linux/notifier.h>
#include <asm/diag.h>
#include <asm/setup.h>
#include <asm/irq.h>
#include <asm/cio.h>
......@@ -366,9 +367,9 @@ static void virtio_ccw_drop_indicator(struct virtio_ccw_device *vcdev,
kfree(thinint_area);
}
static inline long do_kvm_notify(struct subchannel_id schid,
unsigned long queue_index,
long cookie)
static inline long __do_kvm_notify(struct subchannel_id schid,
unsigned long queue_index,
long cookie)
{
register unsigned long __nr asm("1") = KVM_S390_VIRTIO_CCW_NOTIFY;
register struct subchannel_id __schid asm("2") = schid;
......@@ -383,6 +384,14 @@ static inline long do_kvm_notify(struct subchannel_id schid,
return __rc;
}
static inline long do_kvm_notify(struct subchannel_id schid,
unsigned long queue_index,
long cookie)
{
diag_stat_inc(DIAG_STAT_X500);
return __do_kvm_notify(schid, queue_index, cookie);
}
static bool virtio_ccw_kvm_notify(struct virtqueue *vq)
{
struct virtio_ccw_vq_info *info = vq->priv;
......