diff options
| author | Suresh Siddha <suresh.b.siddha@intel.com> | 2011-05-21 00:51:19 (GMT) |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-05-22 09:48:03 (GMT) |
| commit | 69c252ffce77f4e38347d536ee4eab4aa162dc67 (patch) | |
| tree | 070307e0c400d5e4d98f07a8199cc5b62b42b4ce /arch/x86 | |
| parent | 8b37e88061e229e78959fe3257649fd5ce05f8af (diff) | |
| download | linux-69c252ffce77f4e38347d536ee4eab4aa162dc67.tar.xz | |
x86, apic: Clean up bigsmp apic selection code
Make generic_bigsmp_probe() return struct apic *. This will
avoid exporting apic_bigsmp, which will be consistent with
others.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Tested-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: steiner@sgi.com
Cc: gorcunov@openvz.org
Cc: yinghai@kernel.org
Link: http://lkml.kernel.org/r/20110521005526.252703851@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/apic.h | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/bigsmp_32.c | 8 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/probe_32.c | 52 |
3 files changed, 32 insertions, 30 deletions
diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index 80b243c..f37703d 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -500,7 +500,7 @@ static inline void default_wait_for_init_deassert(atomic_t *deassert) return; } -extern void generic_bigsmp_probe(void); +extern struct apic *generic_bigsmp_probe(void); #ifdef CONFIG_X86_LOCAL_APIC diff --git a/arch/x86/kernel/apic/bigsmp_32.c b/arch/x86/kernel/apic/bigsmp_32.c index cfb13c3..479a06c 100644 --- a/arch/x86/kernel/apic/bigsmp_32.c +++ b/arch/x86/kernel/apic/bigsmp_32.c @@ -255,4 +255,12 @@ struct apic apic_bigsmp = { .x86_32_early_logical_apicid = bigsmp_early_logical_apicid, }; +struct apic * __init generic_bigsmp_probe(void) +{ + if (probe_bigsmp()) + return &apic_bigsmp; + + return NULL; +} + apic_driver(apic_bigsmp); diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c index 8796e1d..c81756d 100644 --- a/arch/x86/kernel/apic/probe_32.c +++ b/arch/x86/kernel/apic/probe_32.c @@ -52,31 +52,6 @@ static int __init print_ipi_mode(void) } late_initcall(print_ipi_mode); -void __init default_setup_apic_routing(void) -{ - int version = apic_version[boot_cpu_physical_apicid]; - - if (num_possible_cpus() > 8) { - switch (boot_cpu_data.x86_vendor) { - case X86_VENDOR_INTEL: - if (!APIC_XAPIC(version)) { - def_to_bigsmp = 0; - break; - } - /* If P4 and above fall through */ - case X86_VENDOR_AMD: - def_to_bigsmp = 1; - } - } - -#ifdef CONFIG_X86_BIGSMP - generic_bigsmp_probe(); -#endif - - if (apic->setup_apic_routing) - apic->setup_apic_routing(); -} - static int default_x86_32_early_logical_apicid(int cpu) { return 1 << cpu; @@ -224,24 +199,43 @@ static int __init parse_apic(char *arg) } early_param("apic", parse_apic); -void __init generic_bigsmp_probe(void) +void __init default_setup_apic_routing(void) { + int version = apic_version[boot_cpu_physical_apicid]; + + if (num_possible_cpus() > 8) { + switch (boot_cpu_data.x86_vendor) { + case X86_VENDOR_INTEL: + if (!APIC_XAPIC(version)) { + def_to_bigsmp = 0; + break; + } + /* If P4 and above fall through */ + case X86_VENDOR_AMD: + def_to_bigsmp = 1; + } + } + #ifdef CONFIG_X86_BIGSMP /* - * This routine is used to switch to bigsmp mode when + * This is used to switch to bigsmp mode when * - There is no apic= option specified by the user * - generic_apic_probe() has chosen apic_default as the sub_arch * - we find more than 8 CPUs in acpi LAPIC listing with xAPIC support */ if (!cmdline_apic && apic == &apic_default) { - if (apic_bigsmp.probe()) { - apic = &apic_bigsmp; + struct apic *bigsmp = generic_bigsmp_probe(); + if (bigsmp) { + apic = bigsmp; printk(KERN_INFO "Overriding APIC driver with %s\n", apic->name); } } #endif + + if (apic->setup_apic_routing) + apic->setup_apic_routing(); } void __init generic_apic_probe(void) |