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authorLinus Torvalds <torvalds@g5.osdl.org>2006-10-06 12:13:53 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-06 12:13:53 -0400
commitda104a83692cf07434ab3b20bf10093bdbc3f97e (patch)
tree6343600c318c600f0dcdf71406bf7d993823afd4
parent96e1a87392293cf895ea99ab70758453897c7bbf (diff)
parentdc64bef5439c8e1fafea225054da4d8882c9d10c (diff)
Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: [S390] Use CONFIG_GENERIC_TIME and define TOD clock source. [PATCH] sysrq: irq change build fix. [S390] irq change build fixes. [S390] cio: 0 is a valid chpid. [S390] monwriter buffer limit. [S390] ap bus poll thread priority.
-rw-r--r--arch/s390/Kconfig3
-rw-r--r--arch/s390/defconfig1
-rw-r--r--arch/s390/kernel/s390_ext.c9
-rw-r--r--arch/s390/kernel/smp.c2
-rw-r--r--arch/s390/kernel/time.c103
-rw-r--r--arch/s390/kernel/traps.c2
-rw-r--r--arch/s390/kernel/vtime.c5
-rw-r--r--arch/s390/mm/fault.c2
-rw-r--r--drivers/char/sysrq.c1
-rw-r--r--drivers/s390/block/dasd_diag.c2
-rw-r--r--drivers/s390/char/ctrlchar.c2
-rw-r--r--drivers/s390/char/keyboard.c2
-rw-r--r--drivers/s390/char/monwriter.c10
-rw-r--r--drivers/s390/char/sclp.c4
-rw-r--r--drivers/s390/cio/chsc.c25
-rw-r--r--drivers/s390/cio/cio.c6
-rw-r--r--drivers/s390/crypto/ap_bus.c2
-rw-r--r--drivers/s390/net/iucv.c4
-rw-r--r--include/asm-s390/hardirq.h2
-rw-r--r--include/asm-s390/irq_regs.h1
-rw-r--r--include/asm-s390/s390_ext.h2
21 files changed, 83 insertions, 107 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 51c2dfe89c62..608193cfe43f 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -30,6 +30,9 @@ config GENERIC_CALIBRATE_DELAY
30 bool 30 bool
31 default y 31 default y
32 32
33config GENERIC_TIME
34 def_bool y
35
33config GENERIC_BUST_SPINLOCK 36config GENERIC_BUST_SPINLOCK
34 bool 37 bool
35 38
diff --git a/arch/s390/defconfig b/arch/s390/defconfig
index b6cad75fd1f4..a3257398ea8d 100644
--- a/arch/s390/defconfig
+++ b/arch/s390/defconfig
@@ -9,6 +9,7 @@ CONFIG_STACKTRACE_SUPPORT=y
9CONFIG_RWSEM_XCHGADD_ALGORITHM=y 9CONFIG_RWSEM_XCHGADD_ALGORITHM=y
10CONFIG_GENERIC_HWEIGHT=y 10CONFIG_GENERIC_HWEIGHT=y
11CONFIG_GENERIC_CALIBRATE_DELAY=y 11CONFIG_GENERIC_CALIBRATE_DELAY=y
12CONFIG_GENERIC_TIME=y
12CONFIG_S390=y 13CONFIG_S390=y
13CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config" 14CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
14 15
diff --git a/arch/s390/kernel/s390_ext.c b/arch/s390/kernel/s390_ext.c
index c1b383537fec..c49ab8c784d2 100644
--- a/arch/s390/kernel/s390_ext.c
+++ b/arch/s390/kernel/s390_ext.c
@@ -16,6 +16,7 @@
16 16
17#include <asm/lowcore.h> 17#include <asm/lowcore.h>
18#include <asm/s390_ext.h> 18#include <asm/s390_ext.h>
19#include <asm/irq_regs.h>
19#include <asm/irq.h> 20#include <asm/irq.h>
20 21
21/* 22/*
@@ -114,26 +115,28 @@ void do_extint(struct pt_regs *regs, unsigned short code)
114{ 115{
115 ext_int_info_t *p; 116 ext_int_info_t *p;
116 int index; 117 int index;
118 struct pt_regs *old_regs;
117 119
118 irq_enter(); 120 irq_enter();
121 old_regs = set_irq_regs(regs);
119 asm volatile ("mc 0,0"); 122 asm volatile ("mc 0,0");
120 if (S390_lowcore.int_clock >= S390_lowcore.jiffy_timer) 123 if (S390_lowcore.int_clock >= S390_lowcore.jiffy_timer)
121 /** 124 /**
122 * Make sure that the i/o interrupt did not "overtake" 125 * Make sure that the i/o interrupt did not "overtake"
123 * the last HZ timer interrupt. 126 * the last HZ timer interrupt.
124 */ 127 */
125 account_ticks(regs); 128 account_ticks();
126 kstat_cpu(smp_processor_id()).irqs[EXTERNAL_INTERRUPT]++; 129 kstat_cpu(smp_processor_id()).irqs[EXTERNAL_INTERRUPT]++;
127 index = ext_hash(code); 130 index = ext_hash(code);
128 for (p = ext_int_hash[index]; p; p = p->next) { 131 for (p = ext_int_hash[index]; p; p = p->next) {
129 if (likely(p->code == code)) { 132 if (likely(p->code == code)) {
130 if (likely(p->handler)) 133 if (likely(p->handler))
131 p->handler(regs, code); 134 p->handler(code);
132 } 135 }
133 } 136 }
137 set_irq_regs(old_regs);
134 irq_exit(); 138 irq_exit();
135} 139}
136 140
137EXPORT_SYMBOL(register_external_interrupt); 141EXPORT_SYMBOL(register_external_interrupt);
138EXPORT_SYMBOL(unregister_external_interrupt); 142EXPORT_SYMBOL(unregister_external_interrupt);
139
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)
339 * cpus are handled. 339 * cpus are handled.
340 */ 340 */
341 341
342void do_ext_call_interrupt(struct pt_regs *regs, __u16 code) 342void do_ext_call_interrupt(__u16 code)
343{ 343{
344 unsigned long bits; 344 unsigned long bits;
345 345
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 @@
28#include <linux/profile.h> 28#include <linux/profile.h>
29#include <linux/timex.h> 29#include <linux/timex.h>
30#include <linux/notifier.h> 30#include <linux/notifier.h>
31#include <linux/clocksource.h>
31 32
32#include <asm/uaccess.h> 33#include <asm/uaccess.h>
33#include <asm/delay.h> 34#include <asm/delay.h>
34#include <asm/s390_ext.h> 35#include <asm/s390_ext.h>
35#include <asm/div64.h> 36#include <asm/div64.h>
36#include <asm/irq.h> 37#include <asm/irq.h>
38#include <asm/irq_regs.h>
37#include <asm/timer.h> 39#include <asm/timer.h>
38 40
39/* change this if you have some constant time drift */ 41/* change this if you have some constant time drift */
@@ -81,78 +83,10 @@ void tod_to_timeval(__u64 todval, struct timespec *xtime)
81 xtime->tv_nsec = ((todval * 1000) >> 12); 83 xtime->tv_nsec = ((todval * 1000) >> 12);
82} 84}
83 85
84static inline unsigned long do_gettimeoffset(void)
85{
86 __u64 now;
87
88 now = (get_clock() - jiffies_timer_cc) >> 12;
89 now -= (__u64) jiffies * USECS_PER_JIFFY;
90 return (unsigned long) now;
91}
92
93/*
94 * This version of gettimeofday has microsecond resolution.
95 */
96void do_gettimeofday(struct timeval *tv)
97{
98 unsigned long flags;
99 unsigned long seq;
100 unsigned long usec, sec;
101
102 do {
103 seq = read_seqbegin_irqsave(&xtime_lock, flags);
104
105 sec = xtime.tv_sec;
106 usec = xtime.tv_nsec / 1000 + do_gettimeoffset();
107 } while (read_seqretry_irqrestore(&xtime_lock, seq, flags));
108
109 while (usec >= 1000000) {
110 usec -= 1000000;
111 sec++;
112 }
113
114 tv->tv_sec = sec;
115 tv->tv_usec = usec;
116}
117
118EXPORT_SYMBOL(do_gettimeofday);
119
120int do_settimeofday(struct timespec *tv)
121{
122 time_t wtm_sec, sec = tv->tv_sec;
123 long wtm_nsec, nsec = tv->tv_nsec;
124
125 if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC)
126 return -EINVAL;
127
128 write_seqlock_irq(&xtime_lock);
129 /* This is revolting. We need to set the xtime.tv_nsec
130 * correctly. However, the value in this location is
131 * is value at the last tick.
132 * Discover what correction gettimeofday
133 * would have done, and then undo it!
134 */
135 nsec -= do_gettimeoffset() * 1000;
136
137 wtm_sec = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec);
138 wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - nsec);
139
140 set_normalized_timespec(&xtime, sec, nsec);
141 set_normalized_timespec(&wall_to_monotonic, wtm_sec, wtm_nsec);
142
143 ntp_clear();
144 write_sequnlock_irq(&xtime_lock);
145 clock_was_set();
146 return 0;
147}
148
149EXPORT_SYMBOL(do_settimeofday);
150
151
152#ifdef CONFIG_PROFILING 86#ifdef CONFIG_PROFILING
153#define s390_do_profile(regs) profile_tick(CPU_PROFILING, regs) 87#define s390_do_profile() profile_tick(CPU_PROFILING)
154#else 88#else
155#define s390_do_profile(regs) do { ; } while(0) 89#define s390_do_profile() do { ; } while(0)
156#endif /* CONFIG_PROFILING */ 90#endif /* CONFIG_PROFILING */
157 91
158 92
@@ -160,7 +94,7 @@ EXPORT_SYMBOL(do_settimeofday);
160 * timer_interrupt() needs to keep up the real-time clock, 94 * timer_interrupt() needs to keep up the real-time clock,
161 * as well as call the "do_timer()" routine every clocktick 95 * as well as call the "do_timer()" routine every clocktick
162 */ 96 */
163void account_ticks(struct pt_regs *regs) 97void account_ticks(void)
164{ 98{
165 __u64 tmp; 99 __u64 tmp;
166 __u32 ticks; 100 __u32 ticks;
@@ -221,10 +155,10 @@ void account_ticks(struct pt_regs *regs)
221 account_tick_vtime(current); 155 account_tick_vtime(current);
222#else 156#else
223 while (ticks--) 157 while (ticks--)
224 update_process_times(user_mode(regs)); 158 update_process_times(user_mode(get_irq_regs()));
225#endif 159#endif
226 160
227 s390_do_profile(regs); 161 s390_do_profile();
228} 162}
229 163
230#ifdef CONFIG_NO_IDLE_HZ 164#ifdef CONFIG_NO_IDLE_HZ
@@ -285,9 +219,11 @@ static inline void stop_hz_timer(void)
285 */ 219 */
286static inline void start_hz_timer(void) 220static inline void start_hz_timer(void)
287{ 221{
222 BUG_ON(!in_interrupt());
223
288 if (!cpu_isset(smp_processor_id(), nohz_cpu_mask)) 224 if (!cpu_isset(smp_processor_id(), nohz_cpu_mask))
289 return; 225 return;
290 account_ticks(task_pt_regs(current)); 226 account_ticks();
291 cpu_clear(smp_processor_id(), nohz_cpu_mask); 227 cpu_clear(smp_processor_id(), nohz_cpu_mask);
292} 228}
293 229
@@ -337,6 +273,22 @@ void init_cpu_timer(void)
337 273
338extern void vtime_init(void); 274extern void vtime_init(void);
339 275
276static cycle_t read_tod_clock(void)
277{
278 return get_clock();
279}
280
281static struct clocksource clocksource_tod = {
282 .name = "tod",
283 .rating = 100,
284 .read = read_tod_clock,
285 .mask = -1ULL,
286 .mult = 1000,
287 .shift = 12,
288 .is_continuous = 1,
289};
290
291
340/* 292/*
341 * Initialize the TOD clock and the CPU timer of 293 * Initialize the TOD clock and the CPU timer of
342 * the boot cpu. 294 * the boot cpu.
@@ -381,6 +333,9 @@ void __init time_init(void)
381 &ext_int_info_cc) != 0) 333 &ext_int_info_cc) != 0)
382 panic("Couldn't request external interrupt 0x1004"); 334 panic("Couldn't request external interrupt 0x1004");
383 335
336 if (clocksource_register(&clocksource_tod) != 0)
337 panic("Could not register TOD clock source");
338
384 init_cpu_timer(); 339 init_cpu_timer();
385 340
386#ifdef CONFIG_NO_IDLE_HZ 341#ifdef CONFIG_NO_IDLE_HZ
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 3eb4fab048b8..05bf3cc8530a 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;
61#ifdef CONFIG_PFAULT 61#ifdef CONFIG_PFAULT
62extern int pfault_init(void); 62extern int pfault_init(void);
63extern void pfault_fini(void); 63extern void pfault_fini(void);
64extern void pfault_interrupt(struct pt_regs *regs, __u16 error_code); 64extern void pfault_interrupt(__u16 error_code);
65static ext_int_info_t ext_int_pfault; 65static ext_int_info_t ext_int_pfault;
66#endif 66#endif
67extern pgm_check_handler_t do_monitor_call; 67extern pgm_check_handler_t do_monitor_call;
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c
index 2306cd83fca1..1d7d3938b2b1 100644
--- a/arch/s390/kernel/vtime.c
+++ b/arch/s390/kernel/vtime.c
@@ -22,6 +22,7 @@
22 22
23#include <asm/s390_ext.h> 23#include <asm/s390_ext.h>
24#include <asm/timer.h> 24#include <asm/timer.h>
25#include <asm/irq_regs.h>
25 26
26static ext_int_info_t ext_int_info_timer; 27static ext_int_info_t ext_int_info_timer;
27DEFINE_PER_CPU(struct vtimer_queue, virt_cpu_timer); 28DEFINE_PER_CPU(struct vtimer_queue, virt_cpu_timer);
@@ -241,7 +242,7 @@ static void do_callbacks(struct list_head *cb_list, struct pt_regs *regs)
241/* 242/*
242 * Handler for the virtual CPU timer. 243 * Handler for the virtual CPU timer.
243 */ 244 */
244static void do_cpu_timer_interrupt(struct pt_regs *regs, __u16 error_code) 245static void do_cpu_timer_interrupt(__u16 error_code)
245{ 246{
246 int cpu; 247 int cpu;
247 __u64 next, delta; 248 __u64 next, delta;
@@ -274,7 +275,7 @@ static void do_cpu_timer_interrupt(struct pt_regs *regs, __u16 error_code)
274 list_move_tail(&event->entry, &cb_list); 275 list_move_tail(&event->entry, &cb_list);
275 } 276 }
276 spin_unlock(&vt_list->lock); 277 spin_unlock(&vt_list->lock);
277 do_callbacks(&cb_list, regs); 278 do_callbacks(&cb_list, get_irq_regs());
278 279
279 /* next event is first in list */ 280 /* next event is first in list */
280 spin_lock(&vt_list->lock); 281 spin_lock(&vt_list->lock);
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 9c3c19fe62fc..1c323bbfda91 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -451,7 +451,7 @@ void pfault_fini(void)
451} 451}
452 452
453asmlinkage void 453asmlinkage void
454pfault_interrupt(struct pt_regs *regs, __u16 error_code) 454pfault_interrupt(__u16 error_code)
455{ 455{
456 struct task_struct *tsk; 456 struct task_struct *tsk;
457 __u16 subcode; 457 __u16 subcode;
diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c
index 4c0e08685705..5f49280779fb 100644
--- a/drivers/char/sysrq.c
+++ b/drivers/char/sysrq.c
@@ -38,6 +38,7 @@
38#include <linux/irq.h> 38#include <linux/irq.h>
39 39
40#include <asm/ptrace.h> 40#include <asm/ptrace.h>
41#include <asm/irq_regs.h>
41 42
42/* Whether we react on sysrq keys or just ignore them */ 43/* Whether we react on sysrq keys or just ignore them */
43int sysrq_enabled = 1; 44int sysrq_enabled = 1;
diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c
index 222a8a71a5e8..53db58a68617 100644
--- a/drivers/s390/block/dasd_diag.c
+++ b/drivers/s390/block/dasd_diag.c
@@ -218,7 +218,7 @@ dasd_diag_term_IO(struct dasd_ccw_req * cqr)
218 218
219/* Handle external interruption. */ 219/* Handle external interruption. */
220static void 220static void
221dasd_ext_handler(struct pt_regs *regs, __u16 code) 221dasd_ext_handler(__u16 code)
222{ 222{
223 struct dasd_ccw_req *cqr, *next; 223 struct dasd_ccw_req *cqr, *next;
224 struct dasd_device *device; 224 struct dasd_device *device;
diff --git a/drivers/s390/char/ctrlchar.c b/drivers/s390/char/ctrlchar.c
index d83eb6358bac..49e9628d9297 100644
--- a/drivers/s390/char/ctrlchar.c
+++ b/drivers/s390/char/ctrlchar.c
@@ -20,7 +20,7 @@ static int ctrlchar_sysrq_key;
20static void 20static void
21ctrlchar_handle_sysrq(void *tty) 21ctrlchar_handle_sysrq(void *tty)
22{ 22{
23 handle_sysrq(ctrlchar_sysrq_key, NULL, (struct tty_struct *) tty); 23 handle_sysrq(ctrlchar_sysrq_key, (struct tty_struct *) tty);
24} 24}
25 25
26static DECLARE_WORK(ctrlchar_work, ctrlchar_handle_sysrq, NULL); 26static DECLARE_WORK(ctrlchar_work, ctrlchar_handle_sysrq, NULL);
diff --git a/drivers/s390/char/keyboard.c b/drivers/s390/char/keyboard.c
index 3be06569180d..e3491a5f5219 100644
--- a/drivers/s390/char/keyboard.c
+++ b/drivers/s390/char/keyboard.c
@@ -304,7 +304,7 @@ kbd_keycode(struct kbd_data *kbd, unsigned int keycode)
304 if (kbd->sysrq) { 304 if (kbd->sysrq) {
305 if (kbd->sysrq == K(KT_LATIN, '-')) { 305 if (kbd->sysrq == K(KT_LATIN, '-')) {
306 kbd->sysrq = 0; 306 kbd->sysrq = 0;
307 handle_sysrq(value, NULL, kbd->tty); 307 handle_sysrq(value, kbd->tty);
308 return; 308 return;
309 } 309 }
310 if (value == '-') { 310 if (value == '-') {
diff --git a/drivers/s390/char/monwriter.c b/drivers/s390/char/monwriter.c
index 1e3939aeb8ab..4362ff260244 100644
--- a/drivers/s390/char/monwriter.c
+++ b/drivers/s390/char/monwriter.c
@@ -26,6 +26,7 @@
26#define MONWRITE_MAX_DATALEN 4024 26#define MONWRITE_MAX_DATALEN 4024
27 27
28static int mon_max_bufs = 255; 28static int mon_max_bufs = 255;
29static int mon_buf_count;
29 30
30struct mon_buf { 31struct mon_buf {
31 struct list_head list; 32 struct list_head list;
@@ -40,7 +41,6 @@ struct mon_private {
40 size_t hdr_to_read; 41 size_t hdr_to_read;
41 size_t data_to_read; 42 size_t data_to_read;
42 struct mon_buf *current_buf; 43 struct mon_buf *current_buf;
43 int mon_buf_count;
44}; 44};
45 45
46/* 46/*
@@ -99,13 +99,13 @@ static int monwrite_new_hdr(struct mon_private *monpriv)
99 rc = monwrite_diag(monhdr, monbuf->data, 99 rc = monwrite_diag(monhdr, monbuf->data,
100 APPLDATA_STOP_REC); 100 APPLDATA_STOP_REC);
101 list_del(&monbuf->list); 101 list_del(&monbuf->list);
102 monpriv->mon_buf_count--; 102 mon_buf_count--;
103 kfree(monbuf->data); 103 kfree(monbuf->data);
104 kfree(monbuf); 104 kfree(monbuf);
105 monbuf = NULL; 105 monbuf = NULL;
106 } 106 }
107 } else { 107 } else {
108 if (monpriv->mon_buf_count >= mon_max_bufs) 108 if (mon_buf_count >= mon_max_bufs)
109 return -ENOSPC; 109 return -ENOSPC;
110 monbuf = kzalloc(sizeof(struct mon_buf), GFP_KERNEL); 110 monbuf = kzalloc(sizeof(struct mon_buf), GFP_KERNEL);
111 if (!monbuf) 111 if (!monbuf)
@@ -118,7 +118,7 @@ static int monwrite_new_hdr(struct mon_private *monpriv)
118 } 118 }
119 monbuf->hdr = *monhdr; 119 monbuf->hdr = *monhdr;
120 list_add_tail(&monbuf->list, &monpriv->list); 120 list_add_tail(&monbuf->list, &monpriv->list);
121 monpriv->mon_buf_count++; 121 mon_buf_count++;
122 } 122 }
123 monpriv->current_buf = monbuf; 123 monpriv->current_buf = monbuf;
124 return 0; 124 return 0;
@@ -186,7 +186,7 @@ static int monwrite_close(struct inode *inode, struct file *filp)
186 if (entry->hdr.mon_function != MONWRITE_GEN_EVENT) 186 if (entry->hdr.mon_function != MONWRITE_GEN_EVENT)
187 monwrite_diag(&entry->hdr, entry->data, 187 monwrite_diag(&entry->hdr, entry->data,
188 APPLDATA_STOP_REC); 188 APPLDATA_STOP_REC);
189 monpriv->mon_buf_count--; 189 mon_buf_count--;
190 list_del(&entry->list); 190 list_del(&entry->list);
191 kfree(entry->data); 191 kfree(entry->data);
192 kfree(entry); 192 kfree(entry);
diff --git a/drivers/s390/char/sclp.c b/drivers/s390/char/sclp.c
index 31e335751d6d..8a056df09d6b 100644
--- a/drivers/s390/char/sclp.c
+++ b/drivers/s390/char/sclp.c
@@ -324,7 +324,7 @@ __sclp_find_req(u32 sccb)
324 * Prepare read event data request if necessary. Start processing of next 324 * Prepare read event data request if necessary. Start processing of next
325 * request on queue. */ 325 * request on queue. */
326static void 326static void
327sclp_interrupt_handler(struct pt_regs *regs, __u16 code) 327sclp_interrupt_handler(__u16 code)
328{ 328{
329 struct sclp_req *req; 329 struct sclp_req *req;
330 u32 finished_sccb; 330 u32 finished_sccb;
@@ -743,7 +743,7 @@ EXPORT_SYMBOL(sclp_reactivate);
743/* Handler for external interruption used during initialization. Modify 743/* Handler for external interruption used during initialization. Modify
744 * request state to done. */ 744 * request state to done. */
745static void 745static void
746sclp_check_handler(struct pt_regs *regs, __u16 code) 746sclp_check_handler(__u16 code)
747{ 747{
748 u32 finished_sccb; 748 u32 finished_sccb;
749 749
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index 3bb4e472d73d..07c7f19339d2 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -200,11 +200,13 @@ css_get_ssd_info(struct subchannel *sch)
200 spin_unlock_irq(&sch->lock); 200 spin_unlock_irq(&sch->lock);
201 free_page((unsigned long)page); 201 free_page((unsigned long)page);
202 if (!ret) { 202 if (!ret) {
203 int j, chpid; 203 int j, chpid, mask;
204 /* Allocate channel path structures, if needed. */ 204 /* Allocate channel path structures, if needed. */
205 for (j = 0; j < 8; j++) { 205 for (j = 0; j < 8; j++) {
206 mask = 0x80 >> j;
206 chpid = sch->ssd_info.chpid[j]; 207 chpid = sch->ssd_info.chpid[j];
207 if (chpid && (get_chp_status(chpid) < 0)) 208 if ((sch->schib.pmcw.pim & mask) &&
209 (get_chp_status(chpid) < 0))
208 new_channel_path(chpid); 210 new_channel_path(chpid);
209 } 211 }
210 } 212 }
@@ -222,13 +224,15 @@ s390_subchannel_remove_chpid(struct device *dev, void *data)
222 224
223 sch = to_subchannel(dev); 225 sch = to_subchannel(dev);
224 chpid = data; 226 chpid = data;
225 for (j = 0; j < 8; j++) 227 for (j = 0; j < 8; j++) {
226 if (sch->schib.pmcw.chpid[j] == chpid->id) 228 mask = 0x80 >> j;
229 if ((sch->schib.pmcw.pim & mask) &&
230 (sch->schib.pmcw.chpid[j] == chpid->id))
227 break; 231 break;
232 }
228 if (j >= 8) 233 if (j >= 8)
229 return 0; 234 return 0;
230 235
231 mask = 0x80 >> j;
232 spin_lock_irq(&sch->lock); 236 spin_lock_irq(&sch->lock);
233 237
234 stsch(sch->schid, &schib); 238 stsch(sch->schid, &schib);
@@ -620,7 +624,7 @@ __chp_add_new_sch(struct subchannel_id schid)
620static int 624static int
621__chp_add(struct subchannel_id schid, void *data) 625__chp_add(struct subchannel_id schid, void *data)
622{ 626{
623 int i; 627 int i, mask;
624 struct channel_path *chp; 628 struct channel_path *chp;
625 struct subchannel *sch; 629 struct subchannel *sch;
626 630
@@ -630,8 +634,10 @@ __chp_add(struct subchannel_id schid, void *data)
630 /* Check if the subchannel is now available. */ 634 /* Check if the subchannel is now available. */
631 return __chp_add_new_sch(schid); 635 return __chp_add_new_sch(schid);
632 spin_lock_irq(&sch->lock); 636 spin_lock_irq(&sch->lock);
633 for (i=0; i<8; i++) 637 for (i=0; i<8; i++) {
634 if (sch->schib.pmcw.chpid[i] == chp->id) { 638 mask = 0x80 >> i;
639 if ((sch->schib.pmcw.pim & mask) &&
640 (sch->schib.pmcw.chpid[i] == chp->id)) {
635 if (stsch(sch->schid, &sch->schib) != 0) { 641 if (stsch(sch->schid, &sch->schib) != 0) {
636 /* Endgame. */ 642 /* Endgame. */
637 spin_unlock_irq(&sch->lock); 643 spin_unlock_irq(&sch->lock);
@@ -639,6 +645,7 @@ __chp_add(struct subchannel_id schid, void *data)
639 } 645 }
640 break; 646 break;
641 } 647 }
648 }
642 if (i==8) { 649 if (i==8) {
643 spin_unlock_irq(&sch->lock); 650 spin_unlock_irq(&sch->lock);
644 return 0; 651 return 0;
@@ -646,7 +653,7 @@ __chp_add(struct subchannel_id schid, void *data)
646 sch->lpm = ((sch->schib.pmcw.pim & 653 sch->lpm = ((sch->schib.pmcw.pim &
647 sch->schib.pmcw.pam & 654 sch->schib.pmcw.pam &
648 sch->schib.pmcw.pom) 655 sch->schib.pmcw.pom)
649 | 0x80 >> i) & sch->opm; 656 | mask) & sch->opm;
650 657
651 if (sch->driver && sch->driver->verify) 658 if (sch->driver && sch->driver->verify)
652 sch->driver->verify(&sch->dev); 659 sch->driver->verify(&sch->dev);
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 2e2882daefbb..f18b1623cad7 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -19,6 +19,7 @@
19#include <asm/cio.h> 19#include <asm/cio.h>
20#include <asm/delay.h> 20#include <asm/delay.h>
21#include <asm/irq.h> 21#include <asm/irq.h>
22#include <asm/irq_regs.h>
22#include <asm/setup.h> 23#include <asm/setup.h>
23#include "airq.h" 24#include "airq.h"
24#include "cio.h" 25#include "cio.h"
@@ -606,15 +607,17 @@ do_IRQ (struct pt_regs *regs)
606 struct tpi_info *tpi_info; 607 struct tpi_info *tpi_info;
607 struct subchannel *sch; 608 struct subchannel *sch;
608 struct irb *irb; 609 struct irb *irb;
610 struct pt_regs *old_regs;
609 611
610 irq_enter (); 612 irq_enter ();
613 old_regs = set_irq_regs(regs);
611 asm volatile ("mc 0,0"); 614 asm volatile ("mc 0,0");
612 if (S390_lowcore.int_clock >= S390_lowcore.jiffy_timer) 615 if (S390_lowcore.int_clock >= S390_lowcore.jiffy_timer)
613 /** 616 /**
614 * Make sure that the i/o interrupt did not "overtake" 617 * Make sure that the i/o interrupt did not "overtake"
615 * the last HZ timer interrupt. 618 * the last HZ timer interrupt.
616 */ 619 */
617 account_ticks(regs); 620 account_ticks();
618 /* 621 /*
619 * Get interrupt information from lowcore 622 * Get interrupt information from lowcore
620 */ 623 */
@@ -652,6 +655,7 @@ do_IRQ (struct pt_regs *regs)
652 * out of the sie which costs more cycles than it saves. 655 * out of the sie which costs more cycles than it saves.
653 */ 656 */
654 } while (!MACHINE_IS_VM && tpi (NULL) != 0); 657 } while (!MACHINE_IS_VM && tpi (NULL) != 0);
658 set_irq_regs(old_regs);
655 irq_exit (); 659 irq_exit ();
656} 660}
657 661
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index cd30f37fceae..c5ccd20b110c 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -1062,7 +1062,7 @@ static int ap_poll_thread(void *data)
1062 unsigned long flags; 1062 unsigned long flags;
1063 int requests; 1063 int requests;
1064 1064
1065 set_user_nice(current, -20); 1065 set_user_nice(current, 19);
1066 while (1) { 1066 while (1) {
1067 if (need_resched()) { 1067 if (need_resched()) {
1068 schedule(); 1068 schedule();
diff --git a/drivers/s390/net/iucv.c b/drivers/s390/net/iucv.c
index 809dd8d7f47a..1476ce2b437c 100644
--- a/drivers/s390/net/iucv.c
+++ b/drivers/s390/net/iucv.c
@@ -116,7 +116,7 @@ static DEFINE_SPINLOCK(iucv_irq_queue_lock);
116 *Internal function prototypes 116 *Internal function prototypes
117 */ 117 */
118static void iucv_tasklet_handler(unsigned long); 118static void iucv_tasklet_handler(unsigned long);
119static void iucv_irq_handler(struct pt_regs *, __u16); 119static void iucv_irq_handler(__u16);
120 120
121static DECLARE_TASKLET(iucv_tasklet,iucv_tasklet_handler,0); 121static DECLARE_TASKLET(iucv_tasklet,iucv_tasklet_handler,0);
122 122
@@ -2251,7 +2251,7 @@ iucv_sever(__u16 pathid, __u8 user_data[16])
2251 * Places the interrupt buffer on a queue and schedules iucv_tasklet_handler(). 2251 * Places the interrupt buffer on a queue and schedules iucv_tasklet_handler().
2252 */ 2252 */
2253static void 2253static void
2254iucv_irq_handler(struct pt_regs *regs, __u16 code) 2254iucv_irq_handler(__u16 code)
2255{ 2255{
2256 iucv_irqdata *irqdata; 2256 iucv_irqdata *irqdata;
2257 2257
diff --git a/include/asm-s390/hardirq.h b/include/asm-s390/hardirq.h
index e84b7ef54aac..c2f6a8782d31 100644
--- a/include/asm-s390/hardirq.h
+++ b/include/asm-s390/hardirq.h
@@ -32,6 +32,6 @@ typedef struct {
32 32
33#define HARDIRQ_BITS 8 33#define HARDIRQ_BITS 8
34 34
35extern void account_ticks(struct pt_regs *); 35extern void account_ticks(void);
36 36
37#endif /* __ASM_HARDIRQ_H */ 37#endif /* __ASM_HARDIRQ_H */
diff --git a/include/asm-s390/irq_regs.h b/include/asm-s390/irq_regs.h
new file mode 100644
index 000000000000..3dd9c0b70270
--- /dev/null
+++ b/include/asm-s390/irq_regs.h
@@ -0,0 +1 @@
#include <asm-generic/irq_regs.h>
diff --git a/include/asm-s390/s390_ext.h b/include/asm-s390/s390_ext.h
index e9a2862b230d..df9b1017b703 100644
--- a/include/asm-s390/s390_ext.h
+++ b/include/asm-s390/s390_ext.h
@@ -10,7 +10,7 @@
10 * Martin Schwidefsky (schwidefsky@de.ibm.com) 10 * Martin Schwidefsky (schwidefsky@de.ibm.com)
11 */ 11 */
12 12
13typedef void (*ext_int_handler_t)(struct pt_regs *regs, __u16 code); 13typedef void (*ext_int_handler_t)(__u16 code);
14 14
15/* 15/*
16 * Warning: if you change ext_int_info_t you have to change the 16 * Warning: if you change ext_int_info_t you have to change the