diff options
| author | Oleg Nesterov <oleg@tv-sign.ru> | 2006-12-07 02:14:19 +0100 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2006-12-07 02:14:19 +0100 |
| commit | 6bedb2ccb02dcc70ffc8eb76df71c746378190ad (patch) | |
| tree | ca0abaf9d6ce2abf2f9f4f9322c2bbf03eea58e0 /arch/i386 | |
| parent | [PATCH] x86-64: check vector in setup_ioapic_dest to verify if need setup_IO_... (diff) | |
| download | linux-6bedb2ccb02dcc70ffc8eb76df71c746378190ad.tar.xz linux-6bedb2ccb02dcc70ffc8eb76df71c746378190ad.zip | |
[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/i386')
| -rw-r--r-- | arch/i386/kernel/smp.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/arch/i386/kernel/smp.c b/arch/i386/kernel/smp.c index 31e5c6573aae..1b080ab8a49f 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); } /* |