mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 19:00:25 +00:00
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.
This commit is contained in:
commit
da104a8369
21 changed files with 83 additions and 107 deletions
|
@ -30,6 +30,9 @@ config GENERIC_CALIBRATE_DELAY
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bool
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default y
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config GENERIC_TIME
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def_bool y
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config GENERIC_BUST_SPINLOCK
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bool
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@ -9,6 +9,7 @@ CONFIG_STACKTRACE_SUPPORT=y
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CONFIG_RWSEM_XCHGADD_ALGORITHM=y
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CONFIG_GENERIC_HWEIGHT=y
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CONFIG_GENERIC_CALIBRATE_DELAY=y
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CONFIG_GENERIC_TIME=y
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CONFIG_S390=y
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CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
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@ -16,6 +16,7 @@
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#include <asm/lowcore.h>
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#include <asm/s390_ext.h>
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#include <asm/irq_regs.h>
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#include <asm/irq.h>
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/*
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@ -114,26 +115,28 @@ void do_extint(struct pt_regs *regs, unsigned short code)
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{
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ext_int_info_t *p;
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int index;
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struct pt_regs *old_regs;
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irq_enter();
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old_regs = set_irq_regs(regs);
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asm volatile ("mc 0,0");
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if (S390_lowcore.int_clock >= S390_lowcore.jiffy_timer)
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/**
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* Make sure that the i/o interrupt did not "overtake"
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* the last HZ timer interrupt.
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*/
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account_ticks(regs);
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account_ticks();
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kstat_cpu(smp_processor_id()).irqs[EXTERNAL_INTERRUPT]++;
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index = ext_hash(code);
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for (p = ext_int_hash[index]; p; p = p->next) {
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if (likely(p->code == code)) {
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if (likely(p->handler))
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p->handler(regs, code);
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p->handler(code);
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}
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}
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set_irq_regs(old_regs);
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irq_exit();
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}
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EXPORT_SYMBOL(register_external_interrupt);
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EXPORT_SYMBOL(unregister_external_interrupt);
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@ -339,7 +339,7 @@ void machine_power_off_smp(void)
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* cpus are handled.
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*/
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void do_ext_call_interrupt(struct pt_regs *regs, __u16 code)
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void do_ext_call_interrupt(__u16 code)
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{
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unsigned long bits;
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@ -28,12 +28,14 @@
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#include <linux/profile.h>
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#include <linux/timex.h>
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#include <linux/notifier.h>
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#include <linux/clocksource.h>
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#include <asm/uaccess.h>
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#include <asm/delay.h>
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#include <asm/s390_ext.h>
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#include <asm/div64.h>
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#include <asm/irq.h>
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#include <asm/irq_regs.h>
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#include <asm/timer.h>
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/* change this if you have some constant time drift */
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@ -81,78 +83,10 @@ void tod_to_timeval(__u64 todval, struct timespec *xtime)
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xtime->tv_nsec = ((todval * 1000) >> 12);
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}
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static inline unsigned long do_gettimeoffset(void)
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{
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__u64 now;
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now = (get_clock() - jiffies_timer_cc) >> 12;
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now -= (__u64) jiffies * USECS_PER_JIFFY;
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return (unsigned long) now;
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}
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/*
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* This version of gettimeofday has microsecond resolution.
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*/
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void do_gettimeofday(struct timeval *tv)
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{
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unsigned long flags;
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unsigned long seq;
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unsigned long usec, sec;
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do {
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seq = read_seqbegin_irqsave(&xtime_lock, flags);
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sec = xtime.tv_sec;
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usec = xtime.tv_nsec / 1000 + do_gettimeoffset();
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} while (read_seqretry_irqrestore(&xtime_lock, seq, flags));
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while (usec >= 1000000) {
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usec -= 1000000;
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sec++;
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}
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tv->tv_sec = sec;
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tv->tv_usec = usec;
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}
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EXPORT_SYMBOL(do_gettimeofday);
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int do_settimeofday(struct timespec *tv)
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{
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time_t wtm_sec, sec = tv->tv_sec;
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long wtm_nsec, nsec = tv->tv_nsec;
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if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC)
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return -EINVAL;
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write_seqlock_irq(&xtime_lock);
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/* This is revolting. We need to set the xtime.tv_nsec
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* correctly. However, the value in this location is
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* is value at the last tick.
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* Discover what correction gettimeofday
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* would have done, and then undo it!
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*/
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nsec -= do_gettimeoffset() * 1000;
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wtm_sec = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec);
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wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - nsec);
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set_normalized_timespec(&xtime, sec, nsec);
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set_normalized_timespec(&wall_to_monotonic, wtm_sec, wtm_nsec);
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ntp_clear();
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write_sequnlock_irq(&xtime_lock);
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clock_was_set();
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return 0;
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}
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EXPORT_SYMBOL(do_settimeofday);
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#ifdef CONFIG_PROFILING
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#define s390_do_profile(regs) profile_tick(CPU_PROFILING, regs)
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#define s390_do_profile() profile_tick(CPU_PROFILING)
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#else
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#define s390_do_profile(regs) do { ; } while(0)
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#define s390_do_profile() do { ; } while(0)
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#endif /* CONFIG_PROFILING */
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@ -160,7 +94,7 @@ EXPORT_SYMBOL(do_settimeofday);
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* timer_interrupt() needs to keep up the real-time clock,
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* as well as call the "do_timer()" routine every clocktick
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*/
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void account_ticks(struct pt_regs *regs)
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void account_ticks(void)
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{
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__u64 tmp;
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__u32 ticks;
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@ -221,10 +155,10 @@ void account_ticks(struct pt_regs *regs)
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account_tick_vtime(current);
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#else
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while (ticks--)
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update_process_times(user_mode(regs));
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update_process_times(user_mode(get_irq_regs()));
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#endif
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s390_do_profile(regs);
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s390_do_profile();
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}
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#ifdef CONFIG_NO_IDLE_HZ
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@ -285,9 +219,11 @@ static inline void stop_hz_timer(void)
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*/
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static inline void start_hz_timer(void)
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{
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BUG_ON(!in_interrupt());
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if (!cpu_isset(smp_processor_id(), nohz_cpu_mask))
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return;
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account_ticks(task_pt_regs(current));
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account_ticks();
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cpu_clear(smp_processor_id(), nohz_cpu_mask);
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}
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@ -337,6 +273,22 @@ void init_cpu_timer(void)
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extern void vtime_init(void);
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static cycle_t read_tod_clock(void)
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{
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return get_clock();
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}
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static struct clocksource clocksource_tod = {
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.name = "tod",
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.rating = 100,
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.read = read_tod_clock,
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.mask = -1ULL,
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.mult = 1000,
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.shift = 12,
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.is_continuous = 1,
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};
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/*
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* Initialize the TOD clock and the CPU timer of
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* the boot cpu.
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@ -381,6 +333,9 @@ void __init time_init(void)
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&ext_int_info_cc) != 0)
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panic("Couldn't request external interrupt 0x1004");
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if (clocksource_register(&clocksource_tod) != 0)
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panic("Could not register TOD clock source");
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init_cpu_timer();
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#ifdef CONFIG_NO_IDLE_HZ
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@ -61,7 +61,7 @@ extern pgm_check_handler_t do_dat_exception;
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#ifdef CONFIG_PFAULT
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extern int pfault_init(void);
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extern void pfault_fini(void);
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extern void pfault_interrupt(struct pt_regs *regs, __u16 error_code);
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extern void pfault_interrupt(__u16 error_code);
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static ext_int_info_t ext_int_pfault;
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#endif
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extern pgm_check_handler_t do_monitor_call;
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@ -22,6 +22,7 @@
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#include <asm/s390_ext.h>
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#include <asm/timer.h>
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#include <asm/irq_regs.h>
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static ext_int_info_t ext_int_info_timer;
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DEFINE_PER_CPU(struct vtimer_queue, virt_cpu_timer);
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@ -241,7 +242,7 @@ static void do_callbacks(struct list_head *cb_list, struct pt_regs *regs)
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/*
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* Handler for the virtual CPU timer.
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*/
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static void do_cpu_timer_interrupt(struct pt_regs *regs, __u16 error_code)
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static void do_cpu_timer_interrupt(__u16 error_code)
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{
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int cpu;
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__u64 next, delta;
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@ -274,7 +275,7 @@ static void do_cpu_timer_interrupt(struct pt_regs *regs, __u16 error_code)
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list_move_tail(&event->entry, &cb_list);
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}
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spin_unlock(&vt_list->lock);
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do_callbacks(&cb_list, regs);
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do_callbacks(&cb_list, get_irq_regs());
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/* next event is first in list */
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spin_lock(&vt_list->lock);
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|
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@ -451,7 +451,7 @@ void pfault_fini(void)
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}
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asmlinkage void
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pfault_interrupt(struct pt_regs *regs, __u16 error_code)
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pfault_interrupt(__u16 error_code)
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{
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struct task_struct *tsk;
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__u16 subcode;
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|
|
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@ -38,6 +38,7 @@
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#include <linux/irq.h>
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#include <asm/ptrace.h>
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#include <asm/irq_regs.h>
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/* Whether we react on sysrq keys or just ignore them */
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int sysrq_enabled = 1;
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|
|
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@ -218,7 +218,7 @@ dasd_diag_term_IO(struct dasd_ccw_req * cqr)
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|
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/* Handle external interruption. */
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static void
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dasd_ext_handler(struct pt_regs *regs, __u16 code)
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dasd_ext_handler(__u16 code)
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{
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struct dasd_ccw_req *cqr, *next;
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struct dasd_device *device;
|
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|
|
|
@ -20,7 +20,7 @@ static int ctrlchar_sysrq_key;
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static void
|
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ctrlchar_handle_sysrq(void *tty)
|
||||
{
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handle_sysrq(ctrlchar_sysrq_key, NULL, (struct tty_struct *) tty);
|
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handle_sysrq(ctrlchar_sysrq_key, (struct tty_struct *) tty);
|
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}
|
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|
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static DECLARE_WORK(ctrlchar_work, ctrlchar_handle_sysrq, NULL);
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|
|
|
@ -304,7 +304,7 @@ kbd_keycode(struct kbd_data *kbd, unsigned int keycode)
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if (kbd->sysrq) {
|
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if (kbd->sysrq == K(KT_LATIN, '-')) {
|
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kbd->sysrq = 0;
|
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handle_sysrq(value, NULL, kbd->tty);
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handle_sysrq(value, kbd->tty);
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return;
|
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}
|
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if (value == '-') {
|
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|
|
|
@ -26,6 +26,7 @@
|
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#define MONWRITE_MAX_DATALEN 4024
|
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|
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static int mon_max_bufs = 255;
|
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static int mon_buf_count;
|
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|
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struct mon_buf {
|
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struct list_head list;
|
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|
@ -40,7 +41,6 @@ struct mon_private {
|
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size_t hdr_to_read;
|
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size_t data_to_read;
|
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struct mon_buf *current_buf;
|
||||
int mon_buf_count;
|
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};
|
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|
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/*
|
||||
|
@ -99,13 +99,13 @@ static int monwrite_new_hdr(struct mon_private *monpriv)
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rc = monwrite_diag(monhdr, monbuf->data,
|
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APPLDATA_STOP_REC);
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list_del(&monbuf->list);
|
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monpriv->mon_buf_count--;
|
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mon_buf_count--;
|
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kfree(monbuf->data);
|
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kfree(monbuf);
|
||||
monbuf = NULL;
|
||||
}
|
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} 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);
|
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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,
|
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APPLDATA_STOP_REC);
|
||||
monpriv->mon_buf_count--;
|
||||
mon_buf_count--;
|
||||
list_del(&entry->list);
|
||||
kfree(entry->data);
|
||||
kfree(entry);
|
||||
|
|
|
@ -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;
|
||||
|
||||
|
|
|
@ -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);
|
||||
|
|
|
@ -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 ();
|
||||
}
|
||||
|
||||
|
|
|
@ -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();
|
||||
|
|
|
@ -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;
|
||||
|
||||
|
|
|
@ -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
1
include/asm-s390/irq_regs.h
Normal file
|
@ -0,0 +1 @@
|
|||
#include <asm-generic/irq_regs.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
|
||||
|
|
Loading…
Reference in a new issue