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-rw-r--r--arch/s390/kernel/compat_linux.c2
-rw-r--r--arch/s390/kernel/s390_ext.c9
-rw-r--r--arch/s390/kernel/s390_ksyms.c1
-rw-r--r--arch/s390/kernel/smp.c2
-rw-r--r--arch/s390/kernel/stacktrace.c17
-rw-r--r--arch/s390/kernel/syscalls.S1
-rw-r--r--arch/s390/kernel/time.c103
-rw-r--r--arch/s390/kernel/traps.c12
-rw-r--r--arch/s390/kernel/vtime.c11
9 files changed, 59 insertions, 99 deletions
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index e15e1489aef5..2001767e1dc7 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -295,6 +295,7 @@ static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i)
*
* This is really horribly ugly.
*/
+#ifdef CONFIG_SYSVIPC
asmlinkage long sys32_ipc(u32 call, int first, int second, int third, u32 ptr)
{
if (call >> 16) /* hack for backward compatibility */
@@ -338,6 +339,7 @@ asmlinkage long sys32_ipc(u32 call, int first, int second, int third, u32 ptr)
return -ENOSYS;
}
+#endif
asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
{
diff --git a/arch/s390/kernel/s390_ext.c b/arch/s390/kernel/s390_ext.c
index c1b383537fec..4faf96f8a834 100644
--- a/arch/s390/kernel/s390_ext.c
+++ b/arch/s390/kernel/s390_ext.c
@@ -16,6 +16,7 @@
#include <asm/lowcore.h>
#include <asm/s390_ext.h>
+#include <asm/irq_regs.h>
#include <asm/irq.h>
/*
@@ -114,7 +115,9 @@ void do_extint(struct pt_regs *regs, unsigned short code)
{
ext_int_info_t *p;
int index;
+ struct pt_regs *old_regs;
+ old_regs = set_irq_regs(regs);
irq_enter();
asm volatile ("mc 0,0");
if (S390_lowcore.int_clock >= S390_lowcore.jiffy_timer)
@@ -122,18 +125,18 @@ void do_extint(struct pt_regs *regs, unsigned short code)
* Make sure that the i/o interrupt did not "overtake"
* the last HZ timer interrupt.
*/
- account_ticks(regs);
+ account_ticks();
kstat_cpu(smp_processor_id()).irqs[EXTERNAL_INTERRUPT]++;
index = ext_hash(code);
for (p = ext_int_hash[index]; p; p = p->next) {
if (likely(p->code == code)) {
if (likely(p->handler))
- p->handler(regs, code);
+ p->handler(code);
}
}
irq_exit();
+ set_irq_regs(old_regs);
}
EXPORT_SYMBOL(register_external_interrupt);
EXPORT_SYMBOL(unregister_external_interrupt);
-
diff --git a/arch/s390/kernel/s390_ksyms.c b/arch/s390/kernel/s390_ksyms.c
index 9f19e833a562..90b5ef529eb7 100644
--- a/arch/s390/kernel/s390_ksyms.c
+++ b/arch/s390/kernel/s390_ksyms.c
@@ -51,4 +51,3 @@ EXPORT_SYMBOL(csum_fold);
EXPORT_SYMBOL(console_mode);
EXPORT_SYMBOL(console_devno);
EXPORT_SYMBOL(console_irq);
-EXPORT_SYMBOL(sys_wait4);
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index a8e6199755d4..62822245f9be 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -339,7 +339,7 @@ void machine_power_off_smp(void)
* cpus are handled.
*/
-void do_ext_call_interrupt(struct pt_regs *regs, __u16 code)
+void do_ext_call_interrupt(__u16 code)
{
unsigned long bits;
diff --git a/arch/s390/kernel/stacktrace.c b/arch/s390/kernel/stacktrace.c
index d9428a0fc8fb..0d14a4789bf2 100644
--- a/arch/s390/kernel/stacktrace.c
+++ b/arch/s390/kernel/stacktrace.c
@@ -62,27 +62,26 @@ static inline unsigned long save_context_stack(struct stack_trace *trace,
void save_stack_trace(struct stack_trace *trace, struct task_struct *task)
{
register unsigned long sp asm ("15");
- unsigned long orig_sp;
+ unsigned long orig_sp, new_sp;
- sp &= PSW_ADDR_INSN;
- orig_sp = sp;
+ orig_sp = sp & PSW_ADDR_INSN;
- sp = save_context_stack(trace, &trace->skip, sp,
+ new_sp = save_context_stack(trace, &trace->skip, orig_sp,
S390_lowcore.panic_stack - PAGE_SIZE,
S390_lowcore.panic_stack);
- if ((sp != orig_sp) && !trace->all_contexts)
+ if ((new_sp != orig_sp) && !trace->all_contexts)
return;
- sp = save_context_stack(trace, &trace->skip, sp,
+ new_sp = save_context_stack(trace, &trace->skip, new_sp,
S390_lowcore.async_stack - ASYNC_SIZE,
S390_lowcore.async_stack);
- if ((sp != orig_sp) && !trace->all_contexts)
+ if ((new_sp != orig_sp) && !trace->all_contexts)
return;
if (task)
- save_context_stack(trace, &trace->skip, sp,
+ save_context_stack(trace, &trace->skip, new_sp,
(unsigned long) task_stack_page(task),
(unsigned long) task_stack_page(task) + THREAD_SIZE);
else
- save_context_stack(trace, &trace->skip, sp,
+ save_context_stack(trace, &trace->skip, new_sp,
S390_lowcore.thread_info,
S390_lowcore.thread_info + THREAD_SIZE);
return;
diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S
index e59baec56520..a4ceae3dbcf1 100644
--- a/arch/s390/kernel/syscalls.S
+++ b/arch/s390/kernel/syscalls.S
@@ -320,3 +320,4 @@ SYSCALL(sys_tee,sys_tee,sys_tee_wrapper)
SYSCALL(sys_vmsplice,sys_vmsplice,compat_sys_vmsplice_wrapper)
NI_SYSCALL /* 310 sys_move_pages */
SYSCALL(sys_getcpu,sys_getcpu,sys_getcpu_wrapper)
+SYSCALL(sys_epoll_pwait,sys_epoll_pwait,sys_ni_syscall)
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index 4bf66cc4a267..6cceed4df73e 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -28,12 +28,14 @@
#include <linux/profile.h>
#include <linux/timex.h>
#include <linux/notifier.h>
+#include <linux/clocksource.h>
#include <asm/uaccess.h>
#include <asm/delay.h>
#include <asm/s390_ext.h>
#include <asm/div64.h>
#include <asm/irq.h>
+#include <asm/irq_regs.h>
#include <asm/timer.h>
/* change this if you have some constant time drift */
@@ -81,78 +83,10 @@ void tod_to_timeval(__u64 todval, struct timespec *xtime)
xtime->tv_nsec = ((todval * 1000) >> 12);
}
-static inline unsigned long do_gettimeoffset(void)
-{
- __u64 now;
-
- now = (get_clock() - jiffies_timer_cc) >> 12;
- now -= (__u64) jiffies * USECS_PER_JIFFY;
- return (unsigned long) now;
-}
-
-/*
- * This version of gettimeofday has microsecond resolution.
- */
-void do_gettimeofday(struct timeval *tv)
-{
- unsigned long flags;
- unsigned long seq;
- unsigned long usec, sec;
-
- do {
- seq = read_seqbegin_irqsave(&xtime_lock, flags);
-
- sec = xtime.tv_sec;
- usec = xtime.tv_nsec / 1000 + do_gettimeoffset();
- } while (read_seqretry_irqrestore(&xtime_lock, seq, flags));
-
- while (usec >= 1000000) {
- usec -= 1000000;
- sec++;
- }
-
- tv->tv_sec = sec;
- tv->tv_usec = usec;
-}
-
-EXPORT_SYMBOL(do_gettimeofday);
-
-int do_settimeofday(struct timespec *tv)
-{
- time_t wtm_sec, sec = tv->tv_sec;
- long wtm_nsec, nsec = tv->tv_nsec;
-
- if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC)
- return -EINVAL;
-
- write_seqlock_irq(&xtime_lock);
- /* This is revolting. We need to set the xtime.tv_nsec
- * correctly. However, the value in this location is
- * is value at the last tick.
- * Discover what correction gettimeofday
- * would have done, and then undo it!
- */
- nsec -= do_gettimeoffset() * 1000;
-
- wtm_sec = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec);
- wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - nsec);
-
- set_normalized_timespec(&xtime, sec, nsec);
- set_normalized_timespec(&wall_to_monotonic, wtm_sec, wtm_nsec);
-
- ntp_clear();
- write_sequnlock_irq(&xtime_lock);
- clock_was_set();
- return 0;
-}
-
-EXPORT_SYMBOL(do_settimeofday);
-
-
#ifdef CONFIG_PROFILING
-#define s390_do_profile(regs) profile_tick(CPU_PROFILING, regs)
+#define s390_do_profile() profile_tick(CPU_PROFILING)
#else
-#define s390_do_profile(regs) do { ; } while(0)
+#define s390_do_profile() do { ; } while(0)
#endif /* CONFIG_PROFILING */
@@ -160,7 +94,7 @@ EXPORT_SYMBOL(do_settimeofday);
* timer_interrupt() needs to keep up the real-time clock,
* as well as call the "do_timer()" routine every clocktick
*/
-void account_ticks(struct pt_regs *regs)
+void account_ticks(void)
{
__u64 tmp;
__u32 ticks;
@@ -221,10 +155,10 @@ void account_ticks(struct pt_regs *regs)
account_tick_vtime(current);
#else
while (ticks--)
- update_process_times(user_mode(regs));
+ update_process_times(user_mode(get_irq_regs()));
#endif
- s390_do_profile(regs);
+ s390_do_profile();
}
#ifdef CONFIG_NO_IDLE_HZ
@@ -285,9 +219,11 @@ static inline void stop_hz_timer(void)
*/
static inline void start_hz_timer(void)
{
+ BUG_ON(!in_interrupt());
+
if (!cpu_isset(smp_processor_id(), nohz_cpu_mask))
return;
- account_ticks(task_pt_regs(current));
+ account_ticks();
cpu_clear(smp_processor_id(), nohz_cpu_mask);
}
@@ -337,6 +273,22 @@ void init_cpu_timer(void)
extern void vtime_init(void);
+static cycle_t read_tod_clock(void)
+{
+ return get_clock();
+}
+
+static struct clocksource clocksource_tod = {
+ .name = "tod",
+ .rating = 100,
+ .read = read_tod_clock,
+ .mask = -1ULL,
+ .mult = 1000,
+ .shift = 12,
+ .is_continuous = 1,
+};
+
+
/*
* Initialize the TOD clock and the CPU timer of
* the boot cpu.
@@ -381,6 +333,9 @@ void __init time_init(void)
&ext_int_info_cc) != 0)
panic("Couldn't request external interrupt 0x1004");
+ if (clocksource_register(&clocksource_tod) != 0)
+ panic("Could not register TOD clock source");
+
init_cpu_timer();
#ifdef CONFIG_NO_IDLE_HZ
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 3eb4fab048b8..66375a5e3d12 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -61,7 +61,7 @@ extern pgm_check_handler_t do_dat_exception;
#ifdef CONFIG_PFAULT
extern int pfault_init(void);
extern void pfault_fini(void);
-extern void pfault_interrupt(struct pt_regs *regs, __u16 error_code);
+extern void pfault_interrupt(__u16 error_code);
static ext_int_info_t ext_int_pfault;
#endif
extern pgm_check_handler_t do_monitor_call;
@@ -474,7 +474,7 @@ asmlinkage void illegal_op(struct pt_regs * regs, long interruption_code)
signal = math_emu_b3(opcode, regs);
} else if (opcode[0] == 0xed) {
get_user(*((__u32 *) (opcode+2)),
- (__u32 *)(location+1));
+ (__u32 __user *)(location+1));
signal = math_emu_ed(opcode, regs);
} else if (*((__u16 *) opcode) == 0xb299) {
get_user(*((__u16 *) (opcode+2)), location+1);
@@ -499,7 +499,7 @@ asmlinkage void illegal_op(struct pt_regs * regs, long interruption_code)
info.si_signo = signal;
info.si_errno = 0;
info.si_code = SEGV_MAPERR;
- info.si_addr = (void *) location;
+ info.si_addr = (void __user *) location;
do_trap(interruption_code, signal,
"user address fault", regs, &info);
} else
@@ -520,10 +520,10 @@ asmlinkage void
specification_exception(struct pt_regs * regs, long interruption_code)
{
__u8 opcode[6];
- __u16 *location = NULL;
+ __u16 __user *location = NULL;
int signal = 0;
- location = (__u16 *) get_check_address(regs);
+ location = (__u16 __user *) get_check_address(regs);
/*
* We got all needed information from the lowcore and can
@@ -632,7 +632,7 @@ asmlinkage void data_exception(struct pt_regs * regs, long interruption_code)
break;
case 0xed:
get_user(*((__u32 *) (opcode+2)),
- (__u32 *)(location+1));
+ (__u32 __user *)(location+1));
signal = math_emu_ed(opcode, regs);
break;
case 0xb2:
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c
index 2306cd83fca1..21baaf5496d6 100644
--- a/arch/s390/kernel/vtime.c
+++ b/arch/s390/kernel/vtime.c
@@ -22,6 +22,7 @@
#include <asm/s390_ext.h>
#include <asm/timer.h>
+#include <asm/irq_regs.h>
static ext_int_info_t ext_int_info_timer;
DEFINE_PER_CPU(struct vtimer_queue, virt_cpu_timer);
@@ -208,11 +209,11 @@ static void list_add_sorted(struct vtimer_list *timer, struct list_head *head)
* Do the callback functions of expired vtimer events.
* Called from within the interrupt handler.
*/
-static void do_callbacks(struct list_head *cb_list, struct pt_regs *regs)
+static void do_callbacks(struct list_head *cb_list)
{
struct vtimer_queue *vt_list;
struct vtimer_list *event, *tmp;
- void (*fn)(unsigned long, struct pt_regs*);
+ void (*fn)(unsigned long);
unsigned long data;
if (list_empty(cb_list))
@@ -223,7 +224,7 @@ static void do_callbacks(struct list_head *cb_list, struct pt_regs *regs)
list_for_each_entry_safe(event, tmp, cb_list, entry) {
fn = event->function;
data = event->data;
- fn(data, regs);
+ fn(data);
if (!event->interval)
/* delete one shot timer */
@@ -241,7 +242,7 @@ static void do_callbacks(struct list_head *cb_list, struct pt_regs *regs)
/*
* Handler for the virtual CPU timer.
*/
-static void do_cpu_timer_interrupt(struct pt_regs *regs, __u16 error_code)
+static void do_cpu_timer_interrupt(__u16 error_code)
{
int cpu;
__u64 next, delta;
@@ -274,7 +275,7 @@ static void do_cpu_timer_interrupt(struct pt_regs *regs, __u16 error_code)
list_move_tail(&event->entry, &cb_list);
}
spin_unlock(&vt_list->lock);
- do_callbacks(&cb_list, regs);
+ do_callbacks(&cb_list);
/* next event is first in list */
spin_lock(&vt_list->lock);
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