diff options
Diffstat (limited to 'arch/cris/arch-v32/kernel/fasttimer.c')
| -rw-r--r-- | arch/cris/arch-v32/kernel/fasttimer.c | 793 |
1 files changed, 0 insertions, 793 deletions
diff --git a/arch/cris/arch-v32/kernel/fasttimer.c b/arch/cris/arch-v32/kernel/fasttimer.c deleted file mode 100644 index 7452c70f61ff..000000000000 --- a/arch/cris/arch-v32/kernel/fasttimer.c +++ /dev/null @@ -1,793 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * linux/arch/cris/kernel/fasttimer.c - * - * Fast timers for ETRAX FS - * - * Copyright (C) 2000-2006 Axis Communications AB, Lund, Sweden - */ - -#include <linux/errno.h> -#include <linux/sched.h> -#include <linux/kernel.h> -#include <linux/param.h> -#include <linux/string.h> -#include <linux/vmalloc.h> -#include <linux/interrupt.h> -#include <linux/time.h> -#include <linux/delay.h> - -#include <asm/irq.h> - -#include <hwregs/reg_map.h> -#include <hwregs/reg_rdwr.h> -#include <hwregs/timer_defs.h> -#include <asm/fasttimer.h> -#include <linux/proc_fs.h> -#include <linux/seq_file.h> - -/* - * timer0 is running at 100MHz and generating jiffies timer ticks - * at 100 or 1000 HZ. - * fasttimer gives an API that gives timers that expire "between" the jiffies - * giving microsecond resolution (10 ns). - * fasttimer uses reg_timer_rw_trig register to get interrupt when - * r_time reaches a certain value. - */ - - -#define DEBUG_LOG_INCLUDED -#define FAST_TIMER_LOG -/* #define FAST_TIMER_TEST */ - -#define FAST_TIMER_SANITY_CHECKS - -#ifdef FAST_TIMER_SANITY_CHECKS -static int sanity_failed; -#endif - -#define D1(x) -#define D2(x) -#define DP(x) - -static unsigned int fast_timer_running; -static unsigned int fast_timers_added; -static unsigned int fast_timers_started; -static unsigned int fast_timers_expired; -static unsigned int fast_timers_deleted; -static unsigned int fast_timer_is_init; -static unsigned int fast_timer_ints; - -struct fast_timer *fast_timer_list = NULL; - -#ifdef DEBUG_LOG_INCLUDED -#define DEBUG_LOG_MAX 128 -static const char * debug_log_string[DEBUG_LOG_MAX]; -static unsigned long debug_log_value[DEBUG_LOG_MAX]; -static unsigned int debug_log_cnt; -static unsigned int debug_log_cnt_wrapped; - -#define DEBUG_LOG(string, value) \ -{ \ - unsigned long log_flags; \ - local_irq_save(log_flags); \ - debug_log_string[debug_log_cnt] = (string); \ - debug_log_value[debug_log_cnt] = (unsigned long)(value); \ - if (++debug_log_cnt >= DEBUG_LOG_MAX) \ - { \ - debug_log_cnt = debug_log_cnt % DEBUG_LOG_MAX; \ - debug_log_cnt_wrapped = 1; \ - } \ - local_irq_restore(log_flags); \ -} -#else -#define DEBUG_LOG(string, value) -#endif - - -#define NUM_TIMER_STATS 16 -#ifdef FAST_TIMER_LOG -struct fast_timer timer_added_log[NUM_TIMER_STATS]; -struct fast_timer timer_started_log[NUM_TIMER_STATS]; -struct fast_timer timer_expired_log[NUM_TIMER_STATS]; -#endif - -int timer_div_settings[NUM_TIMER_STATS]; -int timer_delay_settings[NUM_TIMER_STATS]; - -struct work_struct fast_work; - -static void -timer_trig_handler(struct work_struct *work); - - - -/* Not true gettimeofday, only checks the jiffies (uptime) + useconds */ -inline void do_gettimeofday_fast(struct fasttime_t *tv) -{ - tv->tv_jiff = jiffies; - tv->tv_usec = GET_JIFFIES_USEC(); -} - -inline int fasttime_cmp(struct fasttime_t *t0, struct fasttime_t *t1) -{ - /* Compare jiffies. Takes care of wrapping */ - if (time_before(t0->tv_jiff, t1->tv_jiff)) - return -1; - else if (time_after(t0->tv_jiff, t1->tv_jiff)) - return 1; - - /* Compare us */ - if (t0->tv_usec < t1->tv_usec) - return -1; - else if (t0->tv_usec > t1->tv_usec) - return 1; - return 0; -} - -/* Called with ints off */ -inline void start_timer_trig(unsigned long delay_us) -{ - reg_timer_rw_ack_intr ack_intr = { 0 }; - reg_timer_rw_intr_mask intr_mask; - reg_timer_rw_trig trig; - reg_timer_rw_trig_cfg trig_cfg = { 0 }; - reg_timer_r_time r_time0; - reg_timer_r_time r_time1; - unsigned char trig_wrap; - unsigned char time_wrap; - - r_time0 = REG_RD(timer, regi_timer0, r_time); - - D1(printk("start_timer_trig : %d us freq: %i div: %i\n", - delay_us, freq_index, div)); - /* Clear trig irq */ - intr_mask = REG_RD(timer, regi_timer0, rw_intr_mask); - intr_mask.trig = 0; - REG_WR(timer, regi_timer0, rw_intr_mask, intr_mask); - - /* Set timer values and check if trigger wraps. */ - /* r_time is 100MHz (10 ns resolution) */ - trig_wrap = (trig = r_time0 + delay_us*(1000/10)) < r_time0; - - timer_div_settings[fast_timers_started % NUM_TIMER_STATS] = trig; - timer_delay_settings[fast_timers_started % NUM_TIMER_STATS] = delay_us; - - /* Ack interrupt */ - ack_intr.trig = 1; - REG_WR(timer, regi_timer0, rw_ack_intr, ack_intr); - - /* Start timer */ - REG_WR(timer, regi_timer0, rw_trig, trig); - trig_cfg.tmr = regk_timer_time; - REG_WR(timer, regi_timer0, rw_trig_cfg, trig_cfg); - - /* Check if we have already passed the trig time */ - r_time1 = REG_RD(timer, regi_timer0, r_time); - time_wrap = r_time1 < r_time0; - - if ((trig_wrap && !time_wrap) || (r_time1 < trig)) { - /* No, Enable trig irq */ - intr_mask = REG_RD(timer, regi_timer0, rw_intr_mask); - intr_mask.trig = 1; - REG_WR(timer, regi_timer0, rw_intr_mask, intr_mask); - fast_timers_started++; - fast_timer_running = 1; - } else { - /* We have passed the time, disable trig point, ack intr */ - trig_cfg.tmr = regk_timer_off; - REG_WR(timer, regi_timer0, rw_trig_cfg, trig_cfg); - REG_WR(timer, regi_timer0, rw_ack_intr, ack_intr); - /* call the int routine */ - INIT_WORK(&fast_work, timer_trig_handler); - schedule_work(&fast_work); - } - -} - -/* In version 1.4 this function takes 27 - 50 us */ -void start_one_shot_timer(struct fast_timer *t, - fast_timer_function_type *function, - unsigned long data, - unsigned long delay_us, - const char *name) -{ - unsigned long flags; - struct fast_timer *tmp; - - D1(printk("sft %s %d us\n", name, delay_us)); - - local_irq_save(flags); - - do_gettimeofday_fast(&t->tv_set); - tmp = fast_timer_list; - -#ifdef FAST_TIMER_SANITY_CHECKS - /* Check so this is not in the list already... */ - while (tmp != NULL) { - if (tmp == t) { - printk(KERN_DEBUG - "timer name: %s data: 0x%08lX already " - "in list!\n", name, data); - sanity_failed++; - goto done; - } else - tmp = tmp->next; - } - tmp = fast_timer_list; -#endif - - t->delay_us = delay_us; - t->function = function; - t->data = data; - t->name = name; - - t->tv_expires.tv_usec = t->tv_set.tv_usec + delay_us % 1000000; - t->tv_expires.tv_jiff = t->tv_set.tv_jiff + delay_us / 1000000 / HZ; - if (t->tv_expires.tv_usec > 1000000) { - t->tv_expires.tv_usec -= 1000000; - t->tv_expires.tv_jiff += HZ; - } -#ifdef FAST_TIMER_LOG - timer_added_log[fast_timers_added % NUM_TIMER_STATS] = *t; -#endif - fast_timers_added++; - - /* Check if this should timeout before anything else */ - if (tmp == NULL || fasttime_cmp(&t->tv_expires, &tmp->tv_expires) < 0) { - /* Put first in list and modify the timer value */ - t->prev = NULL; - t->next = fast_timer_list; - if (fast_timer_list) - fast_timer_list->prev = t; - fast_timer_list = t; -#ifdef FAST_TIMER_LOG - timer_started_log[fast_timers_started % NUM_TIMER_STATS] = *t; -#endif - start_timer_trig(delay_us); - } else { - /* Put in correct place in list */ - while (tmp->next && - fasttime_cmp(&t->tv_expires, &tmp->next->tv_expires) > 0) - tmp = tmp->next; - /* Insert t after tmp */ - t->prev = tmp; - t->next = tmp->next; - if (tmp->next) - { - tmp->next->prev = t; - } - tmp->next = t; - } - - D2(printk("start_one_shot_timer: %d us done\n", delay_us)); - -done: - local_irq_restore(flags); -} /* start_one_shot_timer */ - -static inline int fast_timer_pending (const struct fast_timer * t) -{ - return (t->next != NULL) || (t->prev != NULL) || (t == fast_timer_list); -} - -static inline int detach_fast_timer (struct fast_timer *t) -{ - struct fast_timer *next, *prev; - if (!fast_timer_pending(t)) - return 0; - next = t->next; - prev = t->prev; - if (next) - next->prev = prev; - if (prev) - prev->next = next; - else - fast_timer_list = next; - fast_timers_deleted++; - return 1; -} - -int del_fast_timer(struct fast_timer * t) -{ - unsigned long flags; - int ret; - - local_irq_save(flags); - ret = detach_fast_timer(t); - t->next = t->prev = NULL; - local_irq_restore(flags); - return ret; -} /* del_fast_timer */ - - -/* Interrupt routines or functions called in interrupt context */ - -/* Timer interrupt handler for trig interrupts */ - -static irqreturn_t -timer_trig_interrupt(int irq, void *dev_id) -{ - reg_timer_r_masked_intr masked_intr; - /* Check if the timer interrupt is for us (a trig int) */ - masked_intr = REG_RD(timer, regi_timer0, r_masked_intr); - if (!masked_intr.trig) - return IRQ_NONE; - timer_trig_handler(NULL); - return IRQ_HANDLED; -} - -static void timer_trig_handler(struct work_struct *work) -{ - reg_timer_rw_ack_intr ack_intr = { 0 }; - reg_timer_rw_intr_mask intr_mask; - reg_timer_rw_trig_cfg trig_cfg = { 0 }; - struct fast_timer *t; - fast_timer_function_type *f; - unsigned long d; - unsigned long flags; - - /* We keep interrupts disabled not only when we modify the - * fast timer list, but any time we hold a reference to a - * timer in the list, since del_fast_timer may be called - * from (another) interrupt context. Thus, the only time - * when interrupts are enabled is when calling the timer - * callback function. - */ - local_irq_save(flags); - - /* Clear timer trig interrupt */ - intr_mask = REG_RD(timer, regi_timer0, rw_intr_mask); - intr_mask.trig = 0; - REG_WR(timer, regi_timer0, rw_intr_mask, intr_mask); - - /* First stop timer, then ack interrupt */ - /* Stop timer */ - trig_cfg.tmr = regk_timer_off; - REG_WR(timer, regi_timer0, rw_trig_cfg, trig_cfg); - - /* Ack interrupt */ - ack_intr.trig = 1; - REG_WR(timer, regi_timer0, rw_ack_intr, ack_intr); - - fast_timer_running = 0; - fast_timer_ints++; - - t = fast_timer_list; - while (t) { - struct fasttime_t tv; - - /* Has it really expired? */ - do_gettimeofday_fast(&tv); - D1(printk(KERN_DEBUG - "t: %is %06ius\n", tv.tv_jiff, tv.tv_usec)); - - if (fasttime_cmp(&t->tv_expires, &tv) <= 0) { - /* Yes it has expired */ -#ifdef FAST_TIMER_LOG - timer_expired_log[fast_timers_expired % NUM_TIMER_STATS] = *t; -#endif - fast_timers_expired++; - - /* Remove this timer before call, since it may reuse the timer */ - if (t->prev) - t->prev->next = t->next; - else - fast_timer_list = t->next; - if (t->next) - t->next->prev = t->prev; - t->prev = NULL; - t->next = NULL; - - /* Save function callback data before enabling - * interrupts, since the timer may be removed and we - * don't know how it was allocated (e.g. ->function - * and ->data may become overwritten after deletion - * if the timer was stack-allocated). - */ - f = t->function; - d = t->data; - - if (f != NULL) { - /* Run the callback function with interrupts - * enabled. */ - local_irq_restore(flags); - f(d); - local_irq_save(flags); - } else - DEBUG_LOG("!trimertrig %i function==NULL!\n", fast_timer_ints); - } else { - /* Timer is to early, let's set it again using the normal routines */ - D1(printk(".\n")); - } - - t = fast_timer_list; - if (t != NULL) { - /* Start next timer.. */ - long us = 0; - struct fasttime_t tv; - - do_gettimeofday_fast(&tv); - - /* time_after_eq takes care of wrapping */ - if (time_after_eq(t->tv_expires.tv_jiff, tv.tv_jiff)) - us = ((t->tv_expires.tv_jiff - tv.tv_jiff) * - 1000000 / HZ + t->tv_expires.tv_usec - - tv.tv_usec); - - if (us > 0) { - if (!fast_timer_running) { -#ifdef FAST_TIMER_LOG - timer_started_log[fast_timers_started % NUM_TIMER_STATS] = *t; -#endif - start_timer_trig(us); - } - break; - } else { - /* Timer already expired, let's handle it better late than never. - * The normal loop handles it - */ - D1(printk("e! %d\n", us)); - } - } - } - - local_irq_restore(flags); - - if (!t) - D1(printk("ttrig stop!\n")); -} - -static void wake_up_func(unsigned long data) -{ - wait_queue_head_t *sleep_wait_p = (wait_queue_head_t*)data; - wake_up(sleep_wait_p); -} - - -/* Useful API */ - -void schedule_usleep(unsigned long us) -{ - struct fast_timer t; - wait_queue_head_t sleep_wait; - init_waitqueue_head(&sleep_wait); - - D1(printk("schedule_usleep(%d)\n", us)); - start_one_shot_timer(&t, wake_up_func, (unsigned long)&sleep_wait, us, - "usleep"); - /* Uninterruptible sleep on the fast timer. (The condition is - * somewhat redundant since the timer is what wakes us up.) */ - wait_event(sleep_wait, !fast_timer_pending(&t)); - - D1(printk("done schedule_usleep(%d)\n", us)); -} - -#ifdef CONFIG_PROC_FS -/* This value is very much based on testing */ -#define BIG_BUF_SIZE (500 + NUM_TIMER_STATS * 300) - -static int proc_fasttimer_show(struct seq_file *m, void *v) -{ - unsigned long flags; - int i = 0; - int num_to_show; - struct fasttime_t tv; - struct fast_timer *t, *nextt; - - do_gettimeofday_fast(&tv); - - seq_printf(m, "Fast timers added: %i\n", fast_timers_added); - seq_printf(m, "Fast timers started: %i\n", fast_timers_started); - seq_printf(m, "Fast timer interrupts: %i\n", fast_timer_ints); - seq_printf(m, "Fast timers expired: %i\n", fast_timers_expired); - seq_printf(m, "Fast timers deleted: %i\n", fast_timers_deleted); - seq_printf(m, "Fast timer running: %s\n", - fast_timer_running ? "yes" : "no"); - seq_printf(m, "Current time: %lu.%06lu\n", - (unsigned long)tv.tv_jiff, - (unsigned long)tv.tv_usec); -#ifdef FAST_TIMER_SANITY_CHECKS - seq_printf(m, "Sanity failed: %i\n", sanity_failed); -#endif - seq_putc(m, '\n'); - -#ifdef DEBUG_LOG_INCLUDED - { - int end_i = debug_log_cnt; - i = 0; - - if (debug_log_cnt_wrapped) - i = debug_log_cnt; - - while ((i != end_i || debug_log_cnt_wrapped)) { - seq_printf(m, debug_log_string[i], debug_log_value[i]); - if (seq_has_overflowed(m)) - return 0; - i = (i+1) % DEBUG_LOG_MAX; - } - } - seq_putc(m, '\n'); -#endif - - num_to_show = (fast_timers_started < NUM_TIMER_STATS ? fast_timers_started: - NUM_TIMER_STATS); - seq_printf(m, "Timers started: %i\n", fast_timers_started); - for (i = 0; i < num_to_show; i++) { - int cur = (fast_timers_started - i - 1) % NUM_TIMER_STATS; - -#if 1 //ndef FAST_TIMER_LOG - seq_printf(m, "div: %i delay: %i\n", - timer_div_settings[cur], - timer_delay_settings[cur]); -#endif -#ifdef FAST_TIMER_LOG - t = &timer_started_log[cur]; - seq_printf(m, "%-14s s: %6lu.%06lu e: %6lu.%06lu d: %6li us data: 0x%08lX\n", - t->name, - (unsigned long)t->tv_set.tv_jiff, - (unsigned long)t->tv_set.tv_usec, - (unsigned long)t->tv_expires.tv_jiff, - (unsigned long)t->tv_expires.tv_usec, - t->delay_us, - t->data); - if (seq_has_overflowed(m)) - return 0; -#endif - } - seq_putc(m, '\n'); - -#ifdef FAST_TIMER_LOG - num_to_show = (fast_timers_added < NUM_TIMER_STATS ? fast_timers_added: - NUM_TIMER_STATS); - seq_printf(m, "Timers added: %i\n", fast_timers_added); - for (i = 0; i < num_to_show; i++) { - t = &timer_added_log[(fast_timers_added - i - 1) % NUM_TIMER_STATS]; - seq_printf(m, "%-14s s: %6lu.%06lu e: %6lu.%06lu d: %6li us data: 0x%08lX\n", - t->name, - (unsigned long)t->tv_set.tv_jiff, - (unsigned long)t->tv_set.tv_usec, - (unsigned long)t->tv_expires.tv_jiff, - (unsigned long)t->tv_expires.tv_usec, - t->delay_us, - t->data); - if (seq_has_overflowed(m)) - return 0; - } - seq_putc(m, '\n'); - - num_to_show = (fast_timers_expired < NUM_TIMER_STATS ? fast_timers_expired: - NUM_TIMER_STATS); - seq_printf(m, "Timers expired: %i\n", fast_timers_expired); - for (i = 0; i < num_to_show; i++){ - t = &timer_expired_log[(fast_timers_expired - i - 1) % NUM_TIMER_STATS]; - seq_printf(m, "%-14s s: %6lu.%06lu e: %6lu.%06lu d: %6li us data: 0x%08lX\n", - t->name, - (unsigned long)t->tv_set.tv_jiff, - (unsigned long)t->tv_set.tv_usec, - (unsigned long)t->tv_expires.tv_jiff, - (unsigned long)t->tv_expires.tv_usec, - t->delay_us, - t->data); - if (seq_has_overflowed(m)) - return 0; - } - seq_putc(m, '\n'); -#endif - - seq_puts(m, "Active timers:\n"); - local_irq_save(flags); - t = fast_timer_list; - while (t != NULL){ - nextt = t->next; - local_irq_restore(flags); - seq_printf(m, "%-14s s: %6lu.%06lu e: %6lu.%06lu d: %6li us data: 0x%08lX\n", - t->name, - (unsigned long)t->tv_set.tv_jiff, - (unsigned long)t->tv_set.tv_usec, - (unsigned long)t->tv_expires.tv_jiff, - (unsigned long)t->tv_expires.tv_usec, - t->delay_us, - t->data); - if (seq_has_overflowed(m)) - return 0; - local_irq_save(flags); - if (t->next != nextt) - printk("timer removed!\n"); - t = nextt; - } - local_irq_restore(flags); - return 0; -} - -static int proc_fasttimer_open(struct inode *inode, struct file *file) -{ - return single_open_size(file, proc_fasttimer_show, PDE_DATA(inode), BIG_BUF_SIZE); -} - -static const struct file_operations proc_fasttimer_fops = { - .open = proc_fasttimer_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -#endif /* PROC_FS */ - -#ifdef FAST_TIMER_TEST -static volatile unsigned long i = 0; -static volatile int num_test_timeout = 0; -static struct fast_timer tr[10]; -static int exp_num[10]; - -static struct fasttime_t tv_exp[100]; - -static void test_timeout(unsigned long data) -{ - do_gettimeofday_fast(&tv_exp[data]); - exp_num[data] = num_test_timeout; - - num_test_timeout++; -} - -static void test_timeout1(unsigned long data) -{ - do_gettimeofday_fast(&tv_exp[data]); - exp_num[data] = num_test_timeout; - if (data < 7) - { - start_one_shot_timer(&tr[i], test_timeout1, i, 1000, "timeout1"); - i++; - } - num_test_timeout++; -} - -DP( -static char buf0[2000]; -static char buf1[2000]; -static char buf2[2000]; -static char buf3[2000]; -static char buf4[2000]; -); - -static char buf5[6000]; -static int j_u[1000]; - -static void fast_timer_test(void) -{ - int prev_num; - int j; - - struct fasttime_t tv, tv0, tv1, tv2; - - printk("fast_timer_test() start\n"); - do_gettimeofday_fast(&tv); - - for (j = 0; j < 1000; j++) - { - j_u[j] = GET_JIFFIES_USEC(); - } - for (j = 0; j < 100; j++) - { - do_gettimeofday_fast(&tv_exp[j]); - } - printk(KERN_DEBUG "fast_timer_test() %is %06i\n", tv.tv_jiff, tv.tv_usec); - - for (j = 0; j < 1000; j++) - { - printk(KERN_DEBUG "%i %i %i %i %i\n", - j_u[j], j_u[j+1], j_u[j+2], j_u[j+3], j_u[j+4]); - j += 4; - } - for (j = 0; j < 100; j++) - { - printk(KERN_DEBUG "%i.%i %i.%i %i.%i %i.%i %i.%i\n", - tv_exp[j].tv_jiff, tv_exp[j].tv_usec, - tv_exp[j+1].tv_jiff, tv_exp[j+1].tv_usec, - tv_exp[j+2].tv_jiff, tv_exp[j+2].tv_usec, - tv_exp[j+3].tv_jiff, tv_exp[j+3].tv_usec, - tv_exp[j+4].tv_jiff, tv_exp[j+4].tv_usec); - j += 4; - } - do_gettimeofday_fast(&tv0); - start_one_shot_timer(&tr[i], test_timeout, i, 50000, "test0"); - DP(proc_fasttimer_read(buf0, NULL, 0, 0, 0)); - i++; - start_one_shot_timer(&tr[i], test_timeout, i, 70000, "test1"); - DP(proc_fasttimer_read(buf1, NULL, 0, 0, 0)); - i++; - start_one_shot_timer(&tr[i], test_timeout, i, 40000, "test2"); - DP(proc_fasttimer_read(buf2, NULL, 0, 0, 0)); - i++; - start_one_shot_timer(&tr[i], test_timeout, i, 60000, "test3"); - DP(proc_fasttimer_read(buf3, NULL, 0, 0, 0)); - i++; - start_one_shot_timer(&tr[i], test_timeout1, i, 55000, "test4xx"); - DP(proc_fasttimer_read(buf4, NULL, 0, 0, 0)); - i++; - do_gettimeofday_fast(&tv1); - - proc_fasttimer_read(buf5, NULL, 0, 0, 0); - - prev_num = num_test_timeout; - while (num_test_timeout < i) - { - if (num_test_timeout != prev_num) - prev_num = num_test_timeout; - } - do_gettimeofday_fast(&tv2); - printk(KERN_INFO "Timers started %is %06i\n", - tv0.tv_jiff, tv0.tv_usec); - printk(KERN_INFO "Timers started at %is %06i\n", - tv1.tv_jiff, tv1.tv_usec); - printk(KERN_INFO "Timers done %is %06i\n", - tv2.tv_jiff, tv2.tv_usec); - DP(printk("buf0:\n"); - printk(buf0); - printk("buf1:\n"); - printk(buf1); - printk("buf2:\n"); - printk(buf2); - printk("buf3:\n"); - printk(buf3); - printk("buf4:\n"); - printk(buf4); - ); - printk("buf5:\n"); - printk(buf5); - - printk("timers set:\n"); - for(j = 0; j<i; j++) - { - struct fast_timer *t = &tr[j]; - printk("%-10s set: %6is %06ius exp: %6is %06ius " - "data: 0x%08X func: 0x%08X\n", - t->name, - t->tv_set.tv_jiff, - t->tv_set.tv_usec, - t->tv_expires.tv_jiff, - t->tv_expires.tv_usec, - t->data, - t->function - ); - - printk(" del: %6ius did exp: %6is %06ius as #%i error: %6li\n", - t->delay_us, - tv_exp[j].tv_jiff, - tv_exp[j].tv_usec, - exp_num[j], - (tv_exp[j].tv_jiff - t->tv_expires.tv_jiff) * - 1000000 + tv_exp[j].tv_usec - - t->tv_expires.tv_usec); - } - proc_fasttimer_read(buf5, NULL, 0, 0, 0); - printk("buf5 after all done:\n"); - printk(buf5); - printk("fast_timer_test() done\n"); -} -#endif - - -int fast_timer_init(void) -{ - /* For some reason, request_irq() hangs when called froom time_init() */ - if (!fast_timer_is_init) - { - printk("fast_timer_init()\n"); - -#ifdef CONFIG_PROC_FS - proc_create("fasttimer", 0, NULL, &proc_fasttimer_fops); -#endif /* PROC_FS */ - if (request_irq(TIMER0_INTR_VECT, timer_trig_interrupt, - IRQF_SHARED, - "fast timer int", &fast_timer_list)) - printk(KERN_ERR "err: fasttimer irq\n"); - fast_timer_is_init = 1; -#ifdef FAST_TIMER_TEST - printk("do test\n"); - fast_timer_test(); -#endif - } - return 0; -} -__initcall(fast_timer_init); |