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authorLinus Torvalds <torvalds@g5.osdl.org>2006-10-05 16:32:01 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-05 16:32:01 -0700
commit44aefd2706bb6f5b65ba2c38cd89e7609e2b43d3 (patch)
tree93824f573767da634fbc82c388b6d33cc454212b /arch/x86_64/kernel
parentc1a26e7d40fb814716950122353a1a556844286b (diff)
parent7d12e780e003f93433d49ce78cfedf4b4c52adc5 (diff)
Merge git://git.infradead.org/~dhowells/irq-2.6
* git://git.infradead.org/~dhowells/irq-2.6: IRQ: Maintain regs pointer globally rather than passing to IRQ handlers IRQ: Typedef the IRQ handler function type IRQ: Typedef the IRQ flow handler function type
Diffstat (limited to 'arch/x86_64/kernel')
-rw-r--r--arch/x86_64/kernel/apic.c12
-rw-r--r--arch/x86_64/kernel/irq.c7
-rw-r--r--arch/x86_64/kernel/time.c20
3 files changed, 21 insertions, 18 deletions
diff --git a/arch/x86_64/kernel/apic.c b/arch/x86_64/kernel/apic.c
index 6472e321cad..af4a1c71a80 100644
--- a/arch/x86_64/kernel/apic.c
+++ b/arch/x86_64/kernel/apic.c
@@ -885,14 +885,14 @@ void setup_APIC_extened_lvt(unsigned char lvt_off, unsigned char vector,
* value into /proc/profile.
*/
-void smp_local_timer_interrupt(struct pt_regs *regs)
+void smp_local_timer_interrupt(void)
{
- profile_tick(CPU_PROFILING, regs);
+ profile_tick(CPU_PROFILING);
#ifdef CONFIG_SMP
- update_process_times(user_mode(regs));
+ update_process_times(user_mode(get_irq_regs()));
#endif
if (apic_runs_main_timer > 1 && smp_processor_id() == boot_cpu_id)
- main_timer_handler(regs);
+ main_timer_handler();
/*
* We take the 'long' return path, and there every subsystem
* grabs the appropriate locks (kernel lock/ irq lock).
@@ -913,7 +913,7 @@ void smp_local_timer_interrupt(struct pt_regs *regs)
* [ if a single-CPU system runs an SMP kernel then we call the local
* interrupt as well. Thus we cannot inline the local irq ... ]
*/
-void smp_apic_timer_interrupt(struct pt_regs *regs)
+void smp_apic_timer_interrupt(void)
{
/*
* the NMI deadlock-detector uses this.
@@ -932,7 +932,7 @@ void smp_apic_timer_interrupt(struct pt_regs *regs)
*/
exit_idle();
irq_enter();
- smp_local_timer_interrupt(regs);
+ smp_local_timer_interrupt();
irq_exit();
}
diff --git a/arch/x86_64/kernel/irq.c b/arch/x86_64/kernel/irq.c
index 506f27c85ca..b8a407fcd5d 100644
--- a/arch/x86_64/kernel/irq.c
+++ b/arch/x86_64/kernel/irq.c
@@ -103,7 +103,9 @@ skip:
* handlers).
*/
asmlinkage unsigned int do_IRQ(struct pt_regs *regs)
-{
+{
+ struct pt_regs *old_regs = set_irq_regs(regs);
+
/* high bit used in ret_from_ code */
unsigned vector = ~regs->orig_rax;
unsigned irq;
@@ -121,9 +123,10 @@ asmlinkage unsigned int do_IRQ(struct pt_regs *regs)
#ifdef CONFIG_DEBUG_STACKOVERFLOW
stack_overflow_check(regs);
#endif
- generic_handle_irq(irq, regs);
+ generic_handle_irq(irq);
irq_exit();
+ set_irq_regs(old_regs);
return 1;
}
diff --git a/arch/x86_64/kernel/time.c b/arch/x86_64/kernel/time.c
index 557e92af7be..1ba5a442ac3 100644
--- a/arch/x86_64/kernel/time.c
+++ b/arch/x86_64/kernel/time.c
@@ -302,20 +302,20 @@ unsigned long long monotonic_clock(void)
}
EXPORT_SYMBOL(monotonic_clock);
-static noinline void handle_lost_ticks(int lost, struct pt_regs *regs)
+static noinline void handle_lost_ticks(int lost)
{
static long lost_count;
static int warned;
if (report_lost_ticks) {
printk(KERN_WARNING "time.c: Lost %d timer tick(s)! ", lost);
- print_symbol("rip %s)\n", regs->rip);
+ print_symbol("rip %s)\n", get_irq_regs()->rip);
}
if (lost_count == 1000 && !warned) {
printk(KERN_WARNING "warning: many lost ticks.\n"
KERN_WARNING "Your time source seems to be instable or "
"some driver is hogging interupts\n");
- print_symbol("rip %s\n", regs->rip);
+ print_symbol("rip %s\n", get_irq_regs()->rip);
if (vxtime.mode == VXTIME_TSC && vxtime.hpet_address) {
printk(KERN_WARNING "Falling back to HPET\n");
if (hpet_use_timer)
@@ -339,7 +339,7 @@ static noinline void handle_lost_ticks(int lost, struct pt_regs *regs)
#endif
}
-void main_timer_handler(struct pt_regs *regs)
+void main_timer_handler(void)
{
static unsigned long rtc_update = 0;
unsigned long tsc;
@@ -411,7 +411,7 @@ void main_timer_handler(struct pt_regs *regs)
}
if (lost > 0)
- handle_lost_ticks(lost, regs);
+ handle_lost_ticks(lost);
else
lost = 0;
@@ -421,7 +421,7 @@ void main_timer_handler(struct pt_regs *regs)
do_timer(lost + 1);
#ifndef CONFIG_SMP
- update_process_times(user_mode(regs));
+ update_process_times(user_mode(get_irq_regs()));
#endif
/*
@@ -431,7 +431,7 @@ void main_timer_handler(struct pt_regs *regs)
*/
if (!using_apic_timer)
- smp_local_timer_interrupt(regs);
+ smp_local_timer_interrupt();
/*
* If we have an externally synchronized Linux clock, then update CMOS clock
@@ -450,11 +450,11 @@ void main_timer_handler(struct pt_regs *regs)
write_sequnlock(&xtime_lock);
}
-static irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t timer_interrupt(int irq, void *dev_id)
{
if (apic_runs_main_timer > 1)
return IRQ_HANDLED;
- main_timer_handler(regs);
+ main_timer_handler();
if (using_apic_timer)
smp_send_timer_broadcast_ipi();
return IRQ_HANDLED;
@@ -1337,7 +1337,7 @@ irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
}
if (call_rtc_interrupt) {
rtc_int_flag |= (RTC_IRQF | (RTC_NUM_INTS << 8));
- rtc_interrupt(rtc_int_flag, dev_id, regs);
+ rtc_interrupt(rtc_int_flag, dev_id);
}
return IRQ_HANDLED;
}