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authorOleg Nesterov <oleg@tv-sign.ru>2006-12-07 02:14:19 +0100
committerAndi Kleen <andi@basil.nowhere.org>2006-12-07 02:14:19 +0100
commit6bedb2ccb02dcc70ffc8eb76df71c746378190ad (patch)
treeca0abaf9d6ce2abf2f9f4f9322c2bbf03eea58e0 /arch
parentad892f5e0d01f3c3b475a688d1ddc211cf3ea56d (diff)
[PATCH] x86-64: don't use set_irq_regs()
We don't need to setup _irq_regs in smp_xxx_interrupt (except apic timer). These handlers run with irqs disabled and do not call functions which need "struct pt_regs". Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andi Kleen <ak@suse.de> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Andi Kleen <ak@suse.de> Acked-By: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/i386/kernel/smp.c6
1 files changed, 0 insertions, 6 deletions
diff --git a/arch/i386/kernel/smp.c b/arch/i386/kernel/smp.c
index 31e5c6573aa..1b080ab8a49 100644
--- a/arch/i386/kernel/smp.c
+++ b/arch/i386/kernel/smp.c
@@ -321,7 +321,6 @@ static inline void leave_mm (unsigned long cpu)
fastcall void smp_invalidate_interrupt(struct pt_regs *regs)
{
- struct pt_regs *old_regs = set_irq_regs(regs);
unsigned long cpu;
cpu = get_cpu();
@@ -352,7 +351,6 @@ fastcall void smp_invalidate_interrupt(struct pt_regs *regs)
smp_mb__after_clear_bit();
out:
put_cpu_no_resched();
- set_irq_regs(old_regs);
}
static void flush_tlb_others(cpumask_t cpumask, struct mm_struct *mm,
@@ -607,14 +605,11 @@ void smp_send_stop(void)
*/
fastcall void smp_reschedule_interrupt(struct pt_regs *regs)
{
- struct pt_regs *old_regs = set_irq_regs(regs);
ack_APIC_irq();
- set_irq_regs(old_regs);
}
fastcall void smp_call_function_interrupt(struct pt_regs *regs)
{
- struct pt_regs *old_regs = set_irq_regs(regs);
void (*func) (void *info) = call_data->func;
void *info = call_data->info;
int wait = call_data->wait;
@@ -637,7 +632,6 @@ fastcall void smp_call_function_interrupt(struct pt_regs *regs)
mb();
atomic_inc(&call_data->finished);
}
- set_irq_regs(old_regs);
}
/*