X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Fparisc%2Fled.c;h=e5d7ed92d6f780ba746b177c14cf6eab9b814bfe;hb=6426b333a7365035ede9744faa24bdc5682fad8a;hp=95bd07b8b61b6b00cab94a447a2822f5a7e69e19;hpb=3499495205a676d85fcc2f3c28e35ec9b43c47e3;p=safe%2Fjmp%2Flinux-2.6 diff --git a/drivers/parisc/led.c b/drivers/parisc/led.c index 95bd07b..e5d7ed9 100644 --- a/drivers/parisc/led.c +++ b/drivers/parisc/led.c @@ -3,7 +3,7 @@ * * (c) Copyright 2000 Red Hat Software * (c) Copyright 2000 Helge Deller - * (c) Copyright 2001-2004 Helge Deller + * (c) Copyright 2001-2005 Helge Deller * (c) Copyright 2001 Randolph Chung * * This program is free software; you can redistribute it and/or modify @@ -23,13 +23,13 @@ * David Pye */ -#include #include #include /* for offsetof() */ #include #include #include #include +#include #include #include #include @@ -56,18 +56,18 @@ relatively large amount of CPU time, some of the calculations can be turned off with the following variables (controlled via procfs) */ -static int led_type = -1; +static int led_type __read_mostly = -1; static unsigned char lastleds; /* LED state from most recent update */ -static unsigned int led_heartbeat = 1; -static unsigned int led_diskio = 1; -static unsigned int led_lanrxtx = 1; -static char lcd_text[32]; -static char lcd_text_default[32]; +static unsigned int led_heartbeat __read_mostly = 1; +static unsigned int led_diskio __read_mostly = 1; +static unsigned int led_lanrxtx __read_mostly = 1; +static char lcd_text[32] __read_mostly; +static char lcd_text_default[32] __read_mostly; static struct workqueue_struct *led_wq; -static void led_work_func(void *); -static DECLARE_WORK(led_task, led_work_func, NULL); +static void led_work_func(struct work_struct *); +static DECLARE_DELAYED_WORK(led_task, led_work_func); #if 0 #define DPRINTK(x) printk x @@ -108,7 +108,7 @@ struct pdc_chassis_lcd_info_ret_block { /* lcd_info is pre-initialized to the values needed to program KittyHawk LCD's * HP seems to have used Sharp/Hitachi HD44780 LCDs most of the time. */ static struct pdc_chassis_lcd_info_ret_block -lcd_info __attribute__((aligned(8))) = +lcd_info __attribute__((aligned(8))) __read_mostly = { .model = DISPLAY_MODEL_LCD, .lcd_width = 16, @@ -136,7 +136,7 @@ static int start_task(void) /* Create the work queue and queue the LED task */ led_wq = create_singlethread_workqueue("led_wq"); - queue_work(led_wq, &led_task); + queue_delayed_work(led_wq, &led_task, 0); return 0; } @@ -144,7 +144,7 @@ static int start_task(void) device_initcall(start_task); /* ptr to LCD/LED-specific function */ -static void (*led_func_ptr) (unsigned char); +static void (*led_func_ptr) (unsigned char) __read_mostly; #ifdef CONFIG_PROC_FS static int led_proc_read(char *page, char **start, off_t off, int count, @@ -195,12 +195,6 @@ static int led_proc_write(struct file *file, const char *buf, cur = lbuf; - /* skip initial spaces */ - while (*cur && isspace(*cur)) - { - cur++; - } - switch ((long)data) { case LED_NOLCD: @@ -252,7 +246,6 @@ static int __init led_create_procfs(void) proc_pdc_root->owner = THIS_MODULE; ent = create_proc_entry("led", S_IFREG|S_IRUGO|S_IWUSR, proc_pdc_root); if (!ent) return -1; - ent->nlink = 1; ent->data = (void *)LED_NOLCD; /* LED */ ent->read_proc = led_proc_read; ent->write_proc = led_proc_write; @@ -262,7 +255,6 @@ static int __init led_create_procfs(void) { ent = create_proc_entry("lcd", S_IFREG|S_IRUGO|S_IWUSR, proc_pdc_root); if (!ent) return -1; - ent->nlink = 1; ent->data = (void *)LED_HASLCD; /* LCD */ ent->read_proc = led_proc_read; ent->write_proc = led_proc_write; @@ -347,7 +339,7 @@ static void led_LCD_driver(unsigned char leds) ** ** led_get_net_activity() ** - ** calculate if there was TX- or RX-troughput on the network interfaces + ** calculate if there was TX- or RX-throughput on the network interfaces ** (analog to dev_get_info() from net/core/dev.c) ** */ @@ -367,15 +359,13 @@ static __inline__ int led_get_net_activity(void) * for reading should be OK */ read_lock(&dev_base_lock); rcu_read_lock(); - for (dev = dev_base; dev; dev = dev->next) { + for_each_netdev(dev) { struct net_device_stats *stats; struct in_device *in_dev = __in_dev_get_rcu(dev); if (!in_dev || !in_dev->ifa_list) continue; if (LOOPBACK(in_dev->ifa_list->ifa_local)) continue; - if (!dev->get_stats) - continue; stats = dev->get_stats(dev); rx_total += stats->rx_packets; tx_total += stats->tx_packets; @@ -410,16 +400,17 @@ static __inline__ int led_get_net_activity(void) static __inline__ int led_get_diskio_activity(void) { static unsigned long last_pgpgin, last_pgpgout; - struct page_state pgstat; + unsigned long events[NR_VM_EVENT_ITEMS]; int changed; - get_full_page_state(&pgstat); /* get no of sectors in & out */ + all_vm_events(events); /* Just use a very simple calculation here. Do not care about overflow, since we only want to know if there was activity or not. */ - changed = (pgstat.pgpgin != last_pgpgin) || (pgstat.pgpgout != last_pgpgout); - last_pgpgin = pgstat.pgpgin; - last_pgpgout = pgstat.pgpgout; + changed = (events[PGPGIN] != last_pgpgin) || + (events[PGPGOUT] != last_pgpgout); + last_pgpgin = events[PGPGIN]; + last_pgpgout = events[PGPGOUT]; return (changed ? LED_DISK_IO : 0); } @@ -442,7 +433,7 @@ static __inline__ int led_get_diskio_activity(void) #define LED_UPDATE_INTERVAL (1 + (HZ*19/1000)) -static void led_work_func (void *unused) +static void led_work_func (struct work_struct *unused) { static unsigned long last_jiffies; static unsigned long count_HZ; /* counter in range 0..HZ */ @@ -498,11 +489,16 @@ static int led_halt(struct notifier_block *, unsigned long, void *); static struct notifier_block led_notifier = { .notifier_call = led_halt, }; +static int notifier_disabled = 0; static int led_halt(struct notifier_block *nb, unsigned long event, void *buf) { char *txt; - + + if (notifier_disabled) + return NOTIFY_OK; + + notifier_disabled = 1; switch (event) { case SYS_RESTART: txt = "SYSTEM RESTART"; break; @@ -526,7 +522,6 @@ static int led_halt(struct notifier_block *nb, unsigned long event, void *buf) if (led_func_ptr) led_func_ptr(0xff); /* turn all LEDs ON */ - unregister_reboot_notifier(&led_notifier); return NOTIFY_OK; } @@ -585,7 +580,7 @@ int __init register_led_driver(int model, unsigned long cmd_reg, unsigned long d /* Ensure the work is queued */ if (led_wq) { - queue_work(led_wq, &led_task); + queue_delayed_work(led_wq, &led_task, 0); } return 0; @@ -626,7 +621,7 @@ void __init register_led_regions(void) ** avoid a race condition while writing the CMD/DATA register pair. ** */ -int lcd_print( char *str ) +int lcd_print( const char *str ) { int i; @@ -655,7 +650,7 @@ int lcd_print( char *str ) /* re-queue the work */ if (led_wq) { - queue_work(led_wq, &led_task); + queue_delayed_work(led_wq, &led_task, 0); } return lcd_info.lcd_width; @@ -679,7 +674,7 @@ int __init led_init(void) int ret; snprintf(lcd_text_default, sizeof(lcd_text_default), - "Linux %s", system_utsname.release); + "Linux %s", init_utsname()->release); /* Work around the buggy PDC of KittyHawk-machines */ switch (CPU_HVERSION) { @@ -757,6 +752,12 @@ not_found: return 1; } +static void __exit led_exit(void) +{ + unregister_reboot_notifier(&led_notifier); + return; +} + #ifdef CONFIG_PROC_FS module_init(led_create_procfs) #endif