aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-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 51c2dfe89c6..608193cfe43 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -30,6 +30,9 @@ config GENERIC_CALIBRATE_DELAY
bool
default y
+config GENERIC_TIME
+ def_bool y
+
config GENERIC_BUST_SPINLOCK
bool
diff --git a/arch/s390/defconfig b/arch/s390/defconfig
index b6cad75fd1f..a3257398ea8 100644
--- a/arch/s390/defconfig
+++ b/arch/s390/defconfig
@@ -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"
diff --git a/arch/s390/kernel/s390_ext.c b/arch/s390/kernel/s390_ext.c
index c1b383537fe..c49ab8c784d 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>
/*
@@ -114,26 +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);
-
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index a8e6199755d..62822245f9b 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/time.c b/arch/s390/kernel/time.c
index 4bf66cc4a26..6cceed4df73 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 3eb4fab048b..05bf3cc8530 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;
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c
index 2306cd83fca..1d7d3938b2b 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);
@@ -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);
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 9c3c19fe62f..1c323bbfda9 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -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;
diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c
index 4c0e0868570..5f49280779f 100644
--- a/drivers/char/sysrq.c
+++ b/drivers/char/sysrq.c
@@ -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;
diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c
index 222a8a71a5e..53db58a6861 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)
/* 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;
diff --git a/drivers/s390/char/ctrlchar.c b/drivers/s390/char/ctrlchar.c
index d83eb6358ba..49e9628d929 100644
--- a/drivers/s390/char/ctrlchar.c
+++ b/drivers/s390/char/ctrlchar.c
@@ -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);
diff --git a/drivers/s390/char/keyboard.c b/drivers/s390/char/keyboard.c
index 3be06569180..e3491a5f521 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)
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 == '-') {
diff --git a/drivers/s390/char/monwriter.c b/drivers/s390/char/monwriter.c
index 1e3939aeb8a..4362ff26024 100644
--- a/drivers/s390/char/monwriter.c
+++ b/drivers/s390/char/monwriter.c
@@ -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);
diff --git a/drivers/s390/char/sclp.c b/drivers/s390/char/sclp.c
index 31e335751d6..8a056df09d6 100644
--- a/drivers/s390/char/sclp.c
+++ b/drivers/s390/char/sclp.c
@@ -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;
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index 3bb4e472d73..07c7f19339d 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -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);
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 2e2882daefb..f18b1623cad 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -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 ();
}
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index cd30f37fcea..c5ccd20b110 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)
unsigned long flags;
int requests;
- set_user_nice(current, -20);
+ set_user_nice(current, 19);
while (1) {
if (need_resched()) {
schedule();
diff --git a/drivers/s390/net/iucv.c b/drivers/s390/net/iucv.c
index 809dd8d7f47..1476ce2b437 100644
--- a/drivers/s390/net/iucv.c
+++ b/drivers/s390/net/iucv.c
@@ -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;
diff --git a/include/asm-s390/hardirq.h b/include/asm-s390/hardirq.h
index e84b7ef54aa..c2f6a8782d3 100644
--- a/include/asm-s390/hardirq.h
+++ b/include/asm-s390/hardirq.h
@@ -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 */
diff --git a/include/asm-s390/irq_regs.h b/include/asm-s390/irq_regs.h
new file mode 100644
index 00000000000..3dd9c0b7027
--- /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 e9a2862b230..df9b1017b70 100644
--- a/include/asm-s390/s390_ext.h
+++ b/include/asm-s390/s390_ext.h
@@ -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
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-29 03:36:12 +0000