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

Browse Source 
* '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.
This commit is contained in:
Linus Torvalds 2006-10-06 09:13:53 -07:00
commit da104a8369
21 changed files with 83 additions and 107 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/s390/Kconfig
View File

@ -30,6 +30,9 @@ config GENERIC_CALIBRATE_DELAY
bool
default y
config GENERIC_TIME
def_bool y
config GENERIC_BUST_SPINLOCK
bool

1
arch/s390/defconfig
View File

@ -9,6 +9,7 @@ CONFIG_STACKTRACE_SUPPORT=y
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_GENERIC_TIME=y
CONFIG_S390=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"

9
arch/s390/kernel/s390_ext.c
View File

@ -16,6 +16,7 @@
#include <asm/lowcore.h>
#include <asm/s390_ext.h>
#include <asm/irq_regs.h>
#include <asm/irq.h>
/*
@ -114,26 +115,28 @@ void do_extint(struct pt_regs *regs, unsigned short code)
{
ext_int_info_t *p;
int index;
struct pt_regs *old_regs;
irq_enter();
old_regs = set_irq_regs(regs);
asm volatile ("mc 0,0");
if (S390_lowcore.int_clock >= S390_lowcore.jiffy_timer)
/**
* 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);
}
}
set_irq_regs(old_regs);
irq_exit();
}
EXPORT_SYMBOL(register_external_interrupt);
EXPORT_SYMBOL(unregister_external_interrupt);

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

@ -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;

103
arch/s390/kernel/time.c
View File

@ -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

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

@ -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;

5
arch/s390/kernel/vtime.c
View File

@ -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);
@ -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, get_irq_regs());
/* next event is first in list */
spin_lock(&vt_list->lock);

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

@ -451,7 +451,7 @@ void pfault_fini(void)
}
asmlinkage void
pfault_interrupt(struct pt_regs *regs, __u16 error_code)
pfault_interrupt(__u16 error_code)
{
struct task_struct *tsk;
__u16 subcode;

1
drivers/char/sysrq.c
View File

@ -38,6 +38,7 @@
#include <linux/irq.h>
#include <asm/ptrace.h>
#include <asm/irq_regs.h>
/* Whether we react on sysrq keys or just ignore them */
int sysrq_enabled = 1;

2
drivers/s390/block/dasd_diag.c
View File

@ -218,7 +218,7 @@ dasd_diag_term_IO(struct dasd_ccw_req * cqr)
/* Handle external interruption. */
static void
dasd_ext_handler(struct pt_regs *regs, __u16 code)
dasd_ext_handler(__u16 code)
{
struct dasd_ccw_req *cqr, *next;
struct dasd_device *device;

2
drivers/s390/char/ctrlchar.c
View File

@ -20,7 +20,7 @@ static int ctrlchar_sysrq_key;
static void
ctrlchar_handle_sysrq(void *tty)
{
handle_sysrq(ctrlchar_sysrq_key, NULL, (struct tty_struct *) tty);
handle_sysrq(ctrlchar_sysrq_key, (struct tty_struct *) tty);
}
static DECLARE_WORK(ctrlchar_work, ctrlchar_handle_sysrq, NULL);

2
drivers/s390/char/keyboard.c
View File

@ -304,7 +304,7 @@ kbd_keycode(struct kbd_data *kbd, unsigned int keycode)
if (kbd->sysrq) {
if (kbd->sysrq == K(KT_LATIN, '-')) {
kbd->sysrq = 0;
handle_sysrq(value, NULL, kbd->tty);
handle_sysrq(value, kbd->tty);
return;
}
if (value == '-') {

10
drivers/s390/char/monwriter.c
View File

@ -26,6 +26,7 @@
#define MONWRITE_MAX_DATALEN 4024
static int mon_max_bufs = 255;
static int mon_buf_count;
struct mon_buf {
struct list_head list;
@ -40,7 +41,6 @@ struct mon_private {
size_t hdr_to_read;
size_t data_to_read;
struct mon_buf *current_buf;
int mon_buf_count;
};
/*
@ -99,13 +99,13 @@ static int monwrite_new_hdr(struct mon_private *monpriv)
rc = monwrite_diag(monhdr, monbuf->data,
APPLDATA_STOP_REC);
list_del(&monbuf->list);
monpriv->mon_buf_count--;
mon_buf_count--;
kfree(monbuf->data);
kfree(monbuf);
monbuf = NULL;
}
} else {
if (monpriv->mon_buf_count >= mon_max_bufs)
if (mon_buf_count >= mon_max_bufs)
return -ENOSPC;
monbuf = kzalloc(sizeof(struct mon_buf), GFP_KERNEL);
if (!monbuf)
@ -118,7 +118,7 @@ static int monwrite_new_hdr(struct mon_private *monpriv)
}
monbuf->hdr = *monhdr;
list_add_tail(&monbuf->list, &monpriv->list);
monpriv->mon_buf_count++;
mon_buf_count++;
}
monpriv->current_buf = monbuf;
return 0;
@ -186,7 +186,7 @@ static int monwrite_close(struct inode *inode, struct file *filp)
if (entry->hdr.mon_function != MONWRITE_GEN_EVENT)
monwrite_diag(&entry->hdr, entry->data,
APPLDATA_STOP_REC);
monpriv->mon_buf_count--;
mon_buf_count--;
list_del(&entry->list);
kfree(entry->data);
kfree(entry);

4
drivers/s390/char/sclp.c
View File

@ -324,7 +324,7 @@ __sclp_find_req(u32 sccb)
* Prepare read event data request if necessary. Start processing of next
* request on queue. */
static void
sclp_interrupt_handler(struct pt_regs *regs, __u16 code)
sclp_interrupt_handler(__u16 code)
{
struct sclp_req *req;
u32 finished_sccb;
@ -743,7 +743,7 @@ EXPORT_SYMBOL(sclp_reactivate);
/* Handler for external interruption used during initialization. Modify
* request state to done. */
static void
sclp_check_handler(struct pt_regs *regs, __u16 code)
sclp_check_handler(__u16 code)
{
u32 finished_sccb;

25
drivers/s390/cio/chsc.c
View File

@ -200,11 +200,13 @@ css_get_ssd_info(struct subchannel *sch)
spin_unlock_irq(&sch->lock);
free_page((unsigned long)page);
if (!ret) {
int j, chpid;
int j, chpid, mask;
/* Allocate channel path structures, if needed. */
for (j = 0; j < 8; j++) {
mask = 0x80 >> j;
chpid = sch->ssd_info.chpid[j];
if (chpid && (get_chp_status(chpid) < 0))
if ((sch->schib.pmcw.pim & mask) &&
(get_chp_status(chpid) < 0))
new_channel_path(chpid);
}
}
@ -222,13 +224,15 @@ s390_subchannel_remove_chpid(struct device *dev, void *data)
sch = to_subchannel(dev);
chpid = data;
for (j = 0; j < 8; j++)
if (sch->schib.pmcw.chpid[j] == chpid->id)
for (j = 0; j < 8; j++) {
mask = 0x80 >> j;
if ((sch->schib.pmcw.pim & mask) &&
(sch->schib.pmcw.chpid[j] == chpid->id))
break;
}
if (j >= 8)
return 0;
mask = 0x80 >> j;
spin_lock_irq(&sch->lock);
stsch(sch->schid, &schib);
@ -620,7 +624,7 @@ __chp_add_new_sch(struct subchannel_id schid)
static int
__chp_add(struct subchannel_id schid, void *data)
{
int i;
int i, mask;
struct channel_path *chp;
struct subchannel *sch;
@ -630,8 +634,10 @@ __chp_add(struct subchannel_id schid, void *data)
/* Check if the subchannel is now available. */
return __chp_add_new_sch(schid);
spin_lock_irq(&sch->lock);
for (i=0; i<8; i++)
if (sch->schib.pmcw.chpid[i] == chp->id) {
for (i=0; i<8; i++) {
mask = 0x80 >> i;
if ((sch->schib.pmcw.pim & mask) &&
(sch->schib.pmcw.chpid[i] == chp->id)) {
if (stsch(sch->schid, &sch->schib) != 0) {
/* Endgame. */
spin_unlock_irq(&sch->lock);
@ -639,6 +645,7 @@ __chp_add(struct subchannel_id schid, void *data)
}
break;
}
}
if (i==8) {
spin_unlock_irq(&sch->lock);
return 0;
@ -646,7 +653,7 @@ __chp_add(struct subchannel_id schid, void *data)
sch->lpm = ((sch->schib.pmcw.pim &
sch->schib.pmcw.pam &
sch->schib.pmcw.pom)
| 0x80 >> i) & sch->opm;
| mask) & sch->opm;
if (sch->driver && sch->driver->verify)
sch->driver->verify(&sch->dev);

6
drivers/s390/cio/cio.c
View File

@ -19,6 +19,7 @@
#include <asm/cio.h>
#include <asm/delay.h>
#include <asm/irq.h>
#include <asm/irq_regs.h>
#include <asm/setup.h>
#include "airq.h"
#include "cio.h"
@ -606,15 +607,17 @@ do_IRQ (struct pt_regs *regs)
struct tpi_info *tpi_info;
struct subchannel *sch;
struct irb *irb;
struct pt_regs *old_regs;
irq_enter ();
old_regs = set_irq_regs(regs);
asm volatile ("mc 0,0");
if (S390_lowcore.int_clock >= S390_lowcore.jiffy_timer)
/**
* Make sure that the i/o interrupt did not "overtake"
* the last HZ timer interrupt.
*/
account_ticks(regs);
account_ticks();
/*
* Get interrupt information from lowcore
*/
@ -652,6 +655,7 @@ do_IRQ (struct pt_regs *regs)
* out of the sie which costs more cycles than it saves.
*/
} while (!MACHINE_IS_VM && tpi (NULL) != 0);
set_irq_regs(old_regs);
irq_exit ();
}

2
drivers/s390/crypto/ap_bus.c
View File

@ -1062,7 +1062,7 @@ static int ap_poll_thread(void *data)
unsigned long flags;
int requests;
set_user_nice(current, -20);
set_user_nice(current, 19);
while (1) {
if (need_resched()) {
schedule();

4
drivers/s390/net/iucv.c
View File

@ -116,7 +116,7 @@ static DEFINE_SPINLOCK(iucv_irq_queue_lock);
*Internal function prototypes
*/
static void iucv_tasklet_handler(unsigned long);
static void iucv_irq_handler(struct pt_regs *, __u16);
static void iucv_irq_handler(__u16);
static DECLARE_TASKLET(iucv_tasklet,iucv_tasklet_handler,0);
@ -2251,7 +2251,7 @@ iucv_sever(__u16 pathid, __u8 user_data[16])
* Places the interrupt buffer on a queue and schedules iucv_tasklet_handler().
*/
static void
iucv_irq_handler(struct pt_regs *regs, __u16 code)
iucv_irq_handler(__u16 code)
{
iucv_irqdata *irqdata;

2
include/asm-s390/hardirq.h
View File

@ -32,6 +32,6 @@ typedef struct {
#define HARDIRQ_BITS 8
extern void account_ticks(struct pt_regs *);
extern void account_ticks(void);
#endif /* __ASM_HARDIRQ_H */

1
include/asm-s390/irq_regs.h Normal file
View File

@ -0,0 +1 @@
#include <asm-generic/irq_regs.h>

2
include/asm-s390/s390_ext.h
View File

@ -10,7 +10,7 @@
* Martin Schwidefsky (schwidefsky@de.ibm.com)
*/
typedef void (*ext_int_handler_t)(struct pt_regs *regs, __u16 code);
typedef void (*ext_int_handler_t)(__u16 code);
/*
* Warning: if you change ext_int_info_t you have to change the