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[PATCH] i386: clean up identify_cpu

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identify_cpu() is used to identify both the boot CPU and secondary
CPUs, but it performs some actions which only apply to the boot CPU.
Those functions are therefore really __init functions, but because
they're called by identify_cpu(), they must be marked __cpuinit.

This patch splits identify_cpu() into identify_boot_cpu() and
identify_secondary_cpu(), and calls the appropriate init functions
from each.  Also, identify_boot_cpu() and all the functions it
dominates are marked __init.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Andi Kleen <ak@suse.de>
This commit is contained in:
Jeremy Fitzhardinge 2007-05-02 19:27:12 +02:00 • committed by Andi Kleen
parent 1353ebb4b4
commit a6c4e076ee
4 changed files with 18 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

21
arch/i386/kernel/cpu/common.c
View file

@ -394,7 +394,7 @@ __setup("serialnumber", x86_serial_nr_setup);
/* /*
* This does the hard work of actually picking apart the CPU stuff... * This does the hard work of actually picking apart the CPU stuff...
*/ */
void __cpuinit identify_cpu(struct cpuinfo_x86 *c) static void __cpuinit identify_cpu(struct cpuinfo_x86 *c)
{ {
int i; int i;
@ -505,15 +505,22 @@ void __cpuinit identify_cpu(struct cpuinfo_x86 *c)
/* Init Machine Check Exception if available. */ /* Init Machine Check Exception if available. */
mcheck_init(c); mcheck_init(c);
}
if (c == &boot_cpu_data) void __init identify_boot_cpu(void)
sysenter_setup(); {
identify_cpu(&boot_cpu_data);
sysenter_setup();
enable_sep_cpu(); enable_sep_cpu();
mtrr_bp_init();
}
if (c == &boot_cpu_data) void __cpuinit identify_secondary_cpu(struct cpuinfo_x86 *c)
mtrr_bp_init(); {
else BUG_ON(c == &boot_cpu_data);
mtrr_ap_init(); identify_cpu(c);
enable_sep_cpu();
mtrr_ap_init();
} }
#ifdef CONFIG_X86_HT #ifdef CONFIG_X86_HT

2
arch/i386/kernel/smpboot.c
View file

@ -155,7 +155,7 @@ static void __cpuinit smp_store_cpu_info(int id)
*c = boot_cpu_data; *c = boot_cpu_data;
if (id!=0) if (id!=0)
identify_cpu(c); identify_secondary_cpu(c);
/* /*
* Mask B, Pentium, but not Pentium MMX * Mask B, Pentium, but not Pentium MMX
*/ */

2
arch/i386/kernel/sysenter.c
View file

@ -72,7 +72,7 @@ extern const char vsyscall_int80_start, vsyscall_int80_end;
extern const char vsyscall_sysenter_start, vsyscall_sysenter_end; extern const char vsyscall_sysenter_start, vsyscall_sysenter_end;
static struct page *syscall_pages[1]; static struct page *syscall_pages[1];
int __cpuinit sysenter_setup(void) int __init sysenter_setup(void)
{ {
void *syscall_page = (void *)get_zeroed_page(GFP_ATOMIC); void *syscall_page = (void *)get_zeroed_page(GFP_ATOMIC);
syscall_pages[0] = virt_to_page(syscall_page); syscall_pages[0] = virt_to_page(syscall_page);

3
include/asm-i386/processor.h
View file

@ -116,7 +116,8 @@ extern char ignore_fpu_irq;
void __init cpu_detect(struct cpuinfo_x86 *c); void __init cpu_detect(struct cpuinfo_x86 *c);
extern void identify_cpu(struct cpuinfo_x86 *); extern void identify_boot_cpu(void);
extern void identify_secondary_cpu(struct cpuinfo_x86 *);
extern void print_cpu_info(struct cpuinfo_x86 *); extern void print_cpu_info(struct cpuinfo_x86 *);
extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c); extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c);
extern unsigned short num_cache_leaves; extern unsigned short num_cache_leaves;