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[PATCH] introduce setup_timer() helper

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Every user of init_timer() also needs to initialize ->function and ->data
fields.  This patch adds a simple setup_timer() helper for that.

The schedule_timeout() is patched as an example of usage.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Oleg Nesterov 2005-10-30 15:01:38 -08:00 • committed by Linus Torvalds
parent 9e4e23bccb
commit a8db2db1e6
3 changed files with 15 additions and 10 deletions
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8
arch/x86_64/kernel/i8259.c
View file

@ -494,7 +494,7 @@ void invalidate_interrupt7(void);
void thermal_interrupt(void); void thermal_interrupt(void);
void i8254_timer_resume(void); void i8254_timer_resume(void);
static void setup_timer(void) static void setup_timer_hardware(void)
{ {
outb_p(0x34,0x43); /* binary, mode 2, LSB/MSB, ch 0 */ outb_p(0x34,0x43); /* binary, mode 2, LSB/MSB, ch 0 */
udelay(10); udelay(10);
@ -505,13 +505,13 @@ static void setup_timer(void)
static int timer_resume(struct sys_device *dev) static int timer_resume(struct sys_device *dev)
{ {
setup_timer(); setup_timer_hardware();
return 0; return 0;
} }
void i8254_timer_resume(void) void i8254_timer_resume(void)
{ {
setup_timer(); setup_timer_hardware();
} }
static struct sysdev_class timer_sysclass = { static struct sysdev_class timer_sysclass = {
@ -594,7 +594,7 @@ void __init init_IRQ(void)
* Set the clock to HZ Hz, we already have a valid * Set the clock to HZ Hz, we already have a valid
* vector now: * vector now:
*/ */
setup_timer(); setup_timer_hardware();
if (!acpi_ioapic) if (!acpi_ioapic)
setup_irq(2, &irq2); setup_irq(2, &irq2);

9
include/linux/timer.h
View file

@ -38,6 +38,15 @@ extern struct timer_base_s __init_timer_base;
void fastcall init_timer(struct timer_list * timer); void fastcall init_timer(struct timer_list * timer);
static inline void setup_timer(struct timer_list * timer,
void (*function)(unsigned long),
unsigned long data)
{
timer->function = function;
timer->data = data;
init_timer(timer);
}
/*** /***
* timer_pending - is a timer pending? * timer_pending - is a timer pending?
* @timer: the timer in question * @timer: the timer in question

8
kernel/timer.c
View file

@ -1146,12 +1146,8 @@ fastcall signed long __sched schedule_timeout(signed long timeout)
expire = timeout + jiffies; expire = timeout + jiffies;
init_timer(&timer); setup_timer(&timer, process_timeout, (unsigned long)current);
timer.expires = expire; __mod_timer(&timer, expire);
timer.data = (unsigned long) current;
timer.function = process_timeout;
add_timer(&timer);
schedule(); schedule();
del_singleshot_timer_sync(&timer); del_singleshot_timer_sync(&timer);