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x86: move stack_start to smp.h 

voyager would conflict with it, but the types are ultimately
compatible. So remove the extern definition from voyager_smp.c
in favour of the common one

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Glauber de Oliveira Costa 2008-03-19 14:25:57 -03:00 committed by Ingo Molnar
parent 7cc3959ecd
commit 9d97d0da71
3 changed files with 7 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/x86/kernel/smpboot_32.c
View File

@ -257,12 +257,6 @@ void __devinit initialize_secondary(void)
:"m" (current->thread.sp),"m" (current->thread.ip));
}
/* Static state in head.S used to set up a CPU */
extern struct {
void * sp;
unsigned short ss;
} stack_start;
static inline void __inquire_remote_apic(int apicid)
{
unsigned i, regs[] = { APIC_ID >> 4, APIC_LVR >> 4, APIC_SPIV >> 4 };

7
arch/x86/mach-voyager/voyager_smp.c
View File

@ -520,13 +520,6 @@ static void __init do_boot_cpu(__u8 cpu)
& ~(voyager_extended_vic_processors
& voyager_allowed_boot_processors);
/* This is an area in head.S which was used to set up the
* initial kernel stack. We need to alter this to give the
* booting CPU a new stack (taken from its idle process) */
extern struct {
__u8 *sp;
unsigned short ss;
} stack_start;
/* This is the format of the CPI IDT gate (in real mode) which
* we're hijacking to boot the CPU */
union IDTFormat {

7
include/asm-x86/smp.h
View File

@ -28,6 +28,13 @@ extern const unsigned char trampoline_data [];
extern const unsigned char trampoline_end [];
extern unsigned char *trampoline_base;
/* Static state in head.S used to set up a CPU */
extern struct {
void *sp;
unsigned short ss;
} stack_start;
struct smp_ops {
void (*smp_prepare_boot_cpu)(void);
void (*smp_prepare_cpus)(unsigned max_cpus);