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linux-sg2042
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Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6 

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] mm: add ZONE_DMA to 31-bit config again
  [S390] mm: add page fault retry handling
  [S390] mm: handle kernel caused page fault oom situations
  [S390] delay: implement ndelay
  [S390] topology,sched: fix cpu_coregroup_mask/cpu_book_mask definitions
  [S390] hwsampler: allow cpu hotplug
  [S390] uaccess: turn __access_ok() into a define
  [S390] irq: merge irq.c and s390_ext.c
  [S390] irq: fix service signal external interrupt handling
  [S390] pfault: always enable service signal interrupt
This commit is contained in:
Linus Torvalds 2011-05-27 10:18:00 -07:00
parent 45acab01ca 69dbb2f79a
commit 95948c31be
24 changed files with 221 additions and 193 deletions
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2
arch/s390/Kconfig
View File

@ -2,7 +2,7 @@ config MMU
def_bool y
config ZONE_DMA
def_bool y if 64BIT
def_bool y
config LOCKDEP_SUPPORT
def_bool y

2
arch/s390/appldata/appldata_mem.c
View File

@ -92,9 +92,7 @@ static void appldata_get_mem_data(void *data)
mem_data->pswpin = ev[PSWPIN];
mem_data->pswpout = ev[PSWPOUT];
mem_data->pgalloc = ev[PGALLOC_NORMAL];
#ifdef CONFIG_ZONE_DMA
mem_data->pgalloc += ev[PGALLOC_DMA];
#endif
mem_data->pgfault = ev[PGFAULT];
mem_data->pgmajfault = ev[PGMAJFAULT];

8
arch/s390/include/asm/delay.h
View File

@ -14,10 +14,12 @@
#ifndef _S390_DELAY_H
#define _S390_DELAY_H
extern void __udelay(unsigned long long usecs);
extern void udelay_simple(unsigned long long usecs);
extern void __delay(unsigned long loops);
void __ndelay(unsigned long long nsecs);
void __udelay(unsigned long long usecs);
void udelay_simple(unsigned long long usecs);
void __delay(unsigned long loops);
#define ndelay(n) __ndelay((unsigned long long) (n))
#define udelay(n) __udelay((unsigned long long) (n))
#define mdelay(n) __udelay((unsigned long long) (n) * 1000)

8
arch/s390/include/asm/irq.h
View File

@ -2,6 +2,7 @@
#define _ASM_IRQ_H
#include <linux/hardirq.h>
#include <linux/types.h>
enum interruption_class {
EXTERNAL_INTERRUPT,
@ -31,4 +32,11 @@ enum interruption_class {
NR_IRQS,
};
typedef void (*ext_int_handler_t)(unsigned int, unsigned int, unsigned long);
int register_external_interrupt(u16 code, ext_int_handler_t handler);
int unregister_external_interrupt(u16 code, ext_int_handler_t handler);
void service_subclass_irq_register(void);
void service_subclass_irq_unregister(void);
#endif /* _ASM_IRQ_H */

17
arch/s390/include/asm/s390_ext.h
View File

@ -1,17 +0,0 @@
/*
* Copyright IBM Corp. 1999,2010
* Author(s): Holger Smolinski <Holger.Smolinski@de.ibm.com>,
* Martin Schwidefsky <schwidefsky@de.ibm.com>,
*/
#ifndef _S390_EXTINT_H
#define _S390_EXTINT_H
#include <linux/types.h>
typedef void (*ext_int_handler_t)(unsigned int, unsigned int, unsigned long);
int register_external_interrupt(__u16 code, ext_int_handler_t handler);
int unregister_external_interrupt(__u16 code, ext_int_handler_t handler);
#endif /* _S390_EXTINT_H */

4
arch/s390/include/asm/topology.h
View File

@ -7,7 +7,7 @@
extern unsigned char cpu_core_id[NR_CPUS];
extern cpumask_t cpu_core_map[NR_CPUS];
static inline const struct cpumask *cpu_coregroup_mask(unsigned int cpu)
static inline const struct cpumask *cpu_coregroup_mask(int cpu)
{
return &cpu_core_map[cpu];
}
@ -21,7 +21,7 @@ static inline const struct cpumask *cpu_coregroup_mask(unsigned int cpu)
extern unsigned char cpu_book_id[NR_CPUS];
extern cpumask_t cpu_book_map[NR_CPUS];
static inline const struct cpumask *cpu_book_mask(unsigned int cpu)
static inline const struct cpumask *cpu_book_mask(int cpu)
{
return &cpu_book_map[cpu];
}

11
arch/s390/include/asm/uaccess.h
View File

@ -49,12 +49,13 @@
#define segment_eq(a,b) ((a).ar4 == (b).ar4)
#define __access_ok(addr, size) \
({ \
__chk_user_ptr(addr); \
1; \
})
static inline int __access_ok(const void __user *addr, unsigned long size)
{
return 1;
}
#define access_ok(type,addr,size) __access_ok(addr,size)
#define access_ok(type, addr, size) __access_ok(addr, size)
/*
* The exception table consists of pairs of addresses: the first is the

8
arch/s390/kernel/Makefile
View File

@ -20,10 +20,10 @@ CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"'
CFLAGS_sysinfo.o += -Iinclude/math-emu -Iarch/s390/math-emu -w
obj-y := bitmap.o traps.o time.o process.o base.o early.o setup.o \
processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o \
s390_ext.o debug.o irq.o ipl.o dis.o diag.o mem_detect.o \
vdso.o vtime.o sysinfo.o nmi.o sclp.o jump_label.o
obj-y := bitmap.o traps.o time.o process.o base.o early.o setup.o vtime.o \
processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o nmi.o \
debug.o irq.o ipl.o dis.o diag.o mem_detect.o sclp.o vdso.o \
sysinfo.o jump_label.o
obj-y += $(if $(CONFIG_64BIT),entry64.o,entry.o)
obj-y += $(if $(CONFIG_64BIT),reipl64.o,reipl.o)

2
arch/s390/kernel/dis.c
View File

@ -30,9 +30,9 @@
#include <asm/atomic.h>
#include <asm/mathemu.h>
#include <asm/cpcmd.h>
#include <asm/s390_ext.h>
#include <asm/lowcore.h>
#include <asm/debug.h>
#include <asm/irq.h>
#ifndef CONFIG_64BIT
#define ONELONG "%08lx: "

137
arch/s390/kernel/irq.c
View File

@ -1,19 +1,28 @@
/*
* Copyright IBM Corp. 2004,2010
* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
* Thomas Spatzier (tspat@de.ibm.com)
* Copyright IBM Corp. 2004,2011
* Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>,
* Holger Smolinski <Holger.Smolinski@de.ibm.com>,
* Thomas Spatzier <tspat@de.ibm.com>,
*
* This file contains interrupt related functions.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/kernel_stat.h>
#include <linux/interrupt.h>
#include <linux/seq_file.h>
#include <linux/cpu.h>
#include <linux/proc_fs.h>
#include <linux/profile.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/ftrace.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/cpu.h>
#include <asm/irq_regs.h>
#include <asm/cputime.h>
#include <asm/lowcore.h>
#include <asm/irq.h>
#include "entry.h"
struct irq_class {
char *name;
@ -82,8 +91,7 @@ int show_interrupts(struct seq_file *p, void *v)
* For compatibilty only. S/390 specific setup of interrupts et al. is done
* much later in init_channel_subsystem().
*/
void __init
init_IRQ(void)
void __init init_IRQ(void)
{
/* nothing... */
}
@ -134,3 +142,116 @@ void init_irq_proc(void)
create_prof_cpu_mask(root_irq_dir);
}
#endif
/*
* ext_int_hash[index] is the start of the list for all external interrupts
* that hash to this index. With the current set of external interrupts
* (0x1202 external call, 0x1004 cpu timer, 0x2401 hwc console, 0x4000
* iucv and 0x2603 pfault) this is always the first element.
*/
struct ext_int_info {
struct ext_int_info *next;
ext_int_handler_t handler;
u16 code;
};
static struct ext_int_info *ext_int_hash[256];
static inline int ext_hash(u16 code)
{
return (code + (code >> 9)) & 0xff;
}
int register_external_interrupt(u16 code, ext_int_handler_t handler)
{
struct ext_int_info *p;
int index;
p = kmalloc(sizeof(*p), GFP_ATOMIC);
if (!p)
return -ENOMEM;
p->code = code;
p->handler = handler;
index = ext_hash(code);
p->next = ext_int_hash[index];
ext_int_hash[index] = p;
return 0;
}
EXPORT_SYMBOL(register_external_interrupt);
int unregister_external_interrupt(u16 code, ext_int_handler_t handler)
{
struct ext_int_info *p, *q;
int index;
index = ext_hash(code);
q = NULL;
p = ext_int_hash[index];
while (p) {
if (p->code == code && p->handler == handler)
break;
q = p;
p = p->next;
}
if (!p)
return -ENOENT;
if (q)
q->next = p->next;
else
ext_int_hash[index] = p->next;
kfree(p);
return 0;
}
EXPORT_SYMBOL(unregister_external_interrupt);
void __irq_entry do_extint(struct pt_regs *regs, unsigned int ext_int_code,
unsigned int param32, unsigned long param64)
{
struct pt_regs *old_regs;
unsigned short code;
struct ext_int_info *p;
int index;
code = (unsigned short) ext_int_code;
old_regs = set_irq_regs(regs);
s390_idle_check(regs, S390_lowcore.int_clock,
S390_lowcore.async_enter_timer);
irq_enter();
if (S390_lowcore.int_clock >= S390_lowcore.clock_comparator)
/* Serve timer interrupts first. */
clock_comparator_work();
kstat_cpu(smp_processor_id()).irqs[EXTERNAL_INTERRUPT]++;
if (code != 0x1004)
__get_cpu_var(s390_idle).nohz_delay = 1;
index = ext_hash(code);
for (p = ext_int_hash[index]; p; p = p->next) {
if (likely(p->code == code))
p->handler(ext_int_code, param32, param64);
}
irq_exit();
set_irq_regs(old_regs);
}
static DEFINE_SPINLOCK(sc_irq_lock);
static int sc_irq_refcount;
void service_subclass_irq_register(void)
{
spin_lock(&sc_irq_lock);
if (!sc_irq_refcount)
ctl_set_bit(0, 9);
sc_irq_refcount++;
spin_unlock(&sc_irq_lock);
}
EXPORT_SYMBOL(service_subclass_irq_register);
void service_subclass_irq_unregister(void)
{
spin_lock(&sc_irq_lock);
sc_irq_refcount--;
if (!sc_irq_refcount)
ctl_clear_bit(0, 9);
spin_unlock(&sc_irq_lock);
}
EXPORT_SYMBOL(service_subclass_irq_unregister);

108
arch/s390/kernel/s390_ext.c
View File

@ -1,108 +0,0 @@
/*
* Copyright IBM Corp. 1999,2010
* Author(s): Holger Smolinski <Holger.Smolinski@de.ibm.com>,
* Martin Schwidefsky <schwidefsky@de.ibm.com>,
*/
#include <linux/kernel_stat.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/ftrace.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <asm/s390_ext.h>
#include <asm/irq_regs.h>
#include <asm/cputime.h>
#include <asm/lowcore.h>
#include <asm/irq.h>
#include "entry.h"
struct ext_int_info {
struct ext_int_info *next;
ext_int_handler_t handler;
__u16 code;
};
/*
* ext_int_hash[index] is the start of the list for all external interrupts
* that hash to this index. With the current set of external interrupts
* (0x1202 external call, 0x1004 cpu timer, 0x2401 hwc console, 0x4000
* iucv and 0x2603 pfault) this is always the first element.
*/
static struct ext_int_info *ext_int_hash[256];
static inline int ext_hash(__u16 code)
{
return (code + (code >> 9)) & 0xff;
}
int register_external_interrupt(__u16 code, ext_int_handler_t handler)
{
struct ext_int_info *p;
int index;
p = kmalloc(sizeof(*p), GFP_ATOMIC);
if (!p)
return -ENOMEM;
p->code = code;
p->handler = handler;
index = ext_hash(code);
p->next = ext_int_hash[index];
ext_int_hash[index] = p;
return 0;
}
EXPORT_SYMBOL(register_external_interrupt);
int unregister_external_interrupt(__u16 code, ext_int_handler_t handler)
{
struct ext_int_info *p, *q;
int index;
index = ext_hash(code);
q = NULL;
p = ext_int_hash[index];
while (p) {
if (p->code == code && p->handler == handler)
break;
q = p;
p = p->next;
}
if (!p)
return -ENOENT;
if (q)
q->next = p->next;
else
ext_int_hash[index] = p->next;
kfree(p);
return 0;
}
EXPORT_SYMBOL(unregister_external_interrupt);
void __irq_entry do_extint(struct pt_regs *regs, unsigned int ext_int_code,
unsigned int param32, unsigned long param64)
{
struct pt_regs *old_regs;
unsigned short code;
struct ext_int_info *p;
int index;
code = (unsigned short) ext_int_code;
old_regs = set_irq_regs(regs);
s390_idle_check(regs, S390_lowcore.int_clock,
S390_lowcore.async_enter_timer);
irq_enter();
if (S390_lowcore.int_clock >= S390_lowcore.clock_comparator)
/* Serve timer interrupts first. */
clock_comparator_work();
kstat_cpu(smp_processor_id()).irqs[EXTERNAL_INTERRUPT]++;
if (code != 0x1004)
__get_cpu_var(s390_idle).nohz_delay = 1;
index = ext_hash(code);
for (p = ext_int_hash[index]; p; p = p->next) {
if (likely(p->code == code))
p->handler(ext_int_code, param32, param64);
}
irq_exit();
set_irq_regs(old_regs);
}

1
arch/s390/kernel/smp.c
View File

@ -44,7 +44,6 @@
#include <asm/sigp.h>
#include <asm/pgalloc.h>
#include <asm/irq.h>
#include <asm/s390_ext.h>
#include <asm/cpcmd.h>
#include <asm/tlbflush.h>
#include <asm/timer.h>

1
arch/s390/kernel/time.c
View File

@ -41,7 +41,6 @@
#include <linux/kprobes.h>
#include <asm/uaccess.h>
#include <asm/delay.h>
#include <asm/s390_ext.h>
#include <asm/div64.h>
#include <asm/vdso.h>
#include <asm/irq.h>

1
arch/s390/kernel/topology.c
View File

@ -17,7 +17,6 @@
#include <linux/smp.h>
#include <linux/cpuset.h>
#include <asm/delay.h>
#include <asm/s390_ext.h>
#define PTF_HORIZONTAL (0UL)
#define PTF_VERTICAL (1UL)

1
arch/s390/kernel/traps.c
View File

@ -39,7 +39,6 @@
#include <asm/atomic.h>
#include <asm/mathemu.h>
#include <asm/cpcmd.h>
#include <asm/s390_ext.h>
#include <asm/lowcore.h>
#include <asm/debug.h>
#include "entry.h"

2
arch/s390/kernel/vtime.c
View File

@ -22,10 +22,10 @@
#include <linux/cpu.h>
#include <linux/kprobes.h>
#include <asm/s390_ext.h>
#include <asm/timer.h>
#include <asm/irq_regs.h>
#include <asm/cputime.h>
#include <asm/irq.h>
static DEFINE_PER_CPU(struct vtimer_queue, virt_cpu_timer);

15
arch/s390/lib/delay.c
View File

@ -12,6 +12,7 @@
#include <linux/module.h>
#include <linux/irqflags.h>
#include <linux/interrupt.h>
#include <asm/div64.h>
void __delay(unsigned long loops)
{
@ -116,3 +117,17 @@ void udelay_simple(unsigned long long usecs)
while (get_clock() < end)
cpu_relax();
}
void __ndelay(unsigned long long nsecs)
{
u64 end;
nsecs <<= 9;
do_div(nsecs, 125);
end = get_clock() + nsecs;
if (nsecs & ~0xfffUL)
__udelay(nsecs >> 12);
while (get_clock() < end)
barrier();
}
EXPORT_SYMBOL(__ndelay);

62
arch/s390/mm/fault.c
View File

@ -34,7 +34,7 @@
#include <asm/asm-offsets.h>
#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/s390_ext.h>
#include <asm/irq.h>
#include <asm/mmu_context.h>
#include <asm/compat.h>
#include "../kernel/entry.h"
@ -245,9 +245,12 @@ static noinline void do_fault_error(struct pt_regs *regs, long int_code,
do_no_context(regs, int_code, trans_exc_code);
break;
default: /* fault & VM_FAULT_ERROR */
if (fault & VM_FAULT_OOM)
pagefault_out_of_memory();
else if (fault & VM_FAULT_SIGBUS) {
if (fault & VM_FAULT_OOM) {
if (!(regs->psw.mask & PSW_MASK_PSTATE))
do_no_context(regs, int_code, trans_exc_code);
else
pagefault_out_of_memory();
} else if (fault & VM_FAULT_SIGBUS) {
/* Kernel mode? Handle exceptions or die */
if (!(regs->psw.mask & PSW_MASK_PSTATE))
do_no_context(regs, int_code, trans_exc_code);
@ -277,7 +280,8 @@ static inline int do_exception(struct pt_regs *regs, int access,
struct mm_struct *mm;
struct vm_area_struct *vma;
unsigned long address;
int fault, write;
unsigned int flags;
int fault;
if (notify_page_fault(regs))
return 0;
@ -296,6 +300,10 @@ static inline int do_exception(struct pt_regs *regs, int access,
address = trans_exc_code & __FAIL_ADDR_MASK;
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address);
flags = FAULT_FLAG_ALLOW_RETRY;
if (access == VM_WRITE || (trans_exc_code & store_indication) == 0x400)
flags |= FAULT_FLAG_WRITE;
retry:
down_read(&mm->mmap_sem);
fault = VM_FAULT_BADMAP;
@ -325,21 +333,31 @@ static inline int do_exception(struct pt_regs *regs, int access,
* make sure we exit gracefully rather than endlessly redo
* the fault.
*/
write = (access == VM_WRITE ||
(trans_exc_code & store_indication) == 0x400) ?
FAULT_FLAG_WRITE : 0;
fault = handle_mm_fault(mm, vma, address, write);
fault = handle_mm_fault(mm, vma, address, flags);
if (unlikely(fault & VM_FAULT_ERROR))
goto out_up;
if (fault & VM_FAULT_MAJOR) {
tsk->maj_flt++;
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0,
regs, address);
} else {
tsk->min_flt++;
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0,
regs, address);
/*
* Major/minor page fault accounting is only done on the
* initial attempt. If we go through a retry, it is extremely
* likely that the page will be found in page cache at that point.
*/
if (flags & FAULT_FLAG_ALLOW_RETRY) {
if (fault & VM_FAULT_MAJOR) {
tsk->maj_flt++;
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0,
regs, address);
} else {
tsk->min_flt++;
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0,
regs, address);
}
if (fault & VM_FAULT_RETRY) {
/* Clear FAULT_FLAG_ALLOW_RETRY to avoid any risk
* of starvation. */
flags &= ~FAULT_FLAG_ALLOW_RETRY;
goto retry;
}
}
/*
* The instruction that caused the program check will
@ -429,10 +447,9 @@ int __handle_fault(unsigned long uaddr, unsigned long pgm_int_code, int write)
access = write ? VM_WRITE : VM_READ;
fault = do_exception(&regs, access, uaddr | 2);
if (unlikely(fault)) {
if (fault & VM_FAULT_OOM) {
pagefault_out_of_memory();
fault = 0;
} else if (fault & VM_FAULT_SIGBUS)
if (fault & VM_FAULT_OOM)
return -EFAULT;
else if (fault & VM_FAULT_SIGBUS)
do_sigbus(&regs, pgm_int_code, uaddr);
}
return fault ? -EFAULT : 0;
@ -485,7 +502,6 @@ int pfault_init(void)
"2:\n"
EX_TABLE(0b,1b)
: "=d" (rc) : "a" (&refbk), "m" (refbk) : "cc");
__ctl_set_bit(0, 9);
return rc;
}
@ -500,7 +516,6 @@ void pfault_fini(void)
if (!MACHINE_IS_VM || pfault_disable)
return;
__ctl_clear_bit(0,9);
asm volatile(
" diag %0,0,0x258\n"
"0:\n"
@ -615,6 +630,7 @@ static int __init pfault_irq_init(void)
rc = pfault_init() == 0 ? 0 : -EOPNOTSUPP;
if (rc)
goto out_pfault;
service_subclass_irq_register();
hotcpu_notifier(pfault_cpu_notify, 0);
return 0;

2
arch/s390/mm/init.c
View File

@ -119,9 +119,7 @@ void __init paging_init(void)
sparse_memory_present_with_active_regions(MAX_NUMNODES);
sparse_init();
memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
#ifdef CONFIG_ZONE_DMA
max_zone_pfns[ZONE_DMA] = PFN_DOWN(MAX_DMA_ADDRESS);
#endif
max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
free_area_init_nodes(max_zone_pfns);
fault_init();

4
arch/s390/oprofile/hwsampler.c
View File

@ -19,7 +19,7 @@
#include <linux/oprofile.h>
#include <asm/lowcore.h>
#include <asm/s390_ext.h>
#include <asm/irq.h>
#include "hwsampler.h"
@ -580,7 +580,7 @@ static int hws_cpu_callback(struct notifier_block *nfb,
{
/* We do not have sampler space available for all possible CPUs.
All CPUs should be online when hw sampling is activated. */
return NOTIFY_BAD;
return (hws_state <= HWS_DEALLOCATED) ? NOTIFY_OK : NOTIFY_BAD;
}
static struct notifier_block hws_cpu_notifier = {

6
drivers/s390/block/dasd_diag.c
View File

@ -24,7 +24,7 @@
#include <asm/debug.h>
#include <asm/ebcdic.h>
#include <asm/io.h>
#include <asm/s390_ext.h>
#include <asm/irq.h>
#include <asm/vtoc.h>
#include <asm/diag.h>
@ -642,7 +642,7 @@ dasd_diag_init(void)
}
ASCEBC(dasd_diag_discipline.ebcname, 4);
ctl_set_bit(0, 9);
service_subclass_irq_register();
register_external_interrupt(0x2603, dasd_ext_handler);
dasd_diag_discipline_pointer = &dasd_diag_discipline;
return 0;
@ -652,7 +652,7 @@ static void __exit
dasd_diag_cleanup(void)
{
unregister_external_interrupt(0x2603, dasd_ext_handler);
ctl_clear_bit(0, 9);
service_subclass_irq_unregister();
dasd_diag_discipline_pointer = NULL;
}

7
drivers/s390/char/sclp.c
View File

@ -19,7 +19,6 @@
#include <linux/suspend.h>
#include <linux/completion.h>
#include <linux/platform_device.h>
#include <asm/s390_ext.h>
#include <asm/types.h>
#include <asm/irq.h>
@ -885,12 +884,12 @@ sclp_check_interface(void)
spin_unlock_irqrestore(&sclp_lock, flags);
/* Enable service-signal interruption - needs to happen
* with IRQs enabled. */
ctl_set_bit(0, 9);
service_subclass_irq_register();
/* Wait for signal from interrupt or timeout */
sclp_sync_wait();
/* Disable service-signal interruption - needs to happen
* with IRQs enabled. */
ctl_clear_bit(0,9);
service_subclass_irq_unregister();
spin_lock_irqsave(&sclp_lock, flags);
del_timer(&sclp_request_timer);
if (sclp_init_req.status == SCLP_REQ_DONE &&
@ -1070,7 +1069,7 @@ sclp_init(void)
spin_unlock_irqrestore(&sclp_lock, flags);
/* Enable service-signal external interruption - needs to happen with
* IRQs enabled. */
ctl_set_bit(0, 9);
service_subclass_irq_register();
sclp_init_mask(1);
return 0;

3
drivers/s390/kvm/kvm_virtio.c
View File

@ -25,7 +25,6 @@
#include <asm/kvm_para.h>
#include <asm/kvm_virtio.h>
#include <asm/setup.h>
#include <asm/s390_ext.h>
#include <asm/irq.h>
#define VIRTIO_SUBCODE_64 0x0D00
@ -441,7 +440,7 @@ static int __init kvm_devices_init(void)
INIT_WORK(&hotplug_work, hotplug_devices);
ctl_set_bit(0, 9);
service_subclass_irq_register();
register_external_interrupt(0x2603, kvm_extint_handler);
scan_devices();

2
net/iucv/iucv.c
View File

@ -54,7 +54,7 @@
#include <asm/atomic.h>
#include <asm/ebcdic.h>
#include <asm/io.h>
#include <asm/s390_ext.h>
#include <asm/irq.h>
#include <asm/smp.h>
/*