Commit c853c676 authored by Alexey Starikovskiy's avatar Alexey Starikovskiy Committed by Ingo Molnar
Browse files

x86: separate generic_processor_info into its own function 



Signed-off-by: default avatarAlexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 987dd2d4

arch/x86/kernel/mpparse_32.c

+82 −76
Original line number Diff line number Diff line
@@ -109,12 +109,91 @@ static int mpc_record; 
static struct mpc_config_translation *translation_table[MAX_MPC_ENTRY] __cpuinitdata;

#endif



static void __cpuinit MP_processor_info (struct mpc_config_processor *m)

static void __cpuinit generic_processor_info(int apicid, int version)

{

	int ver, apicid, cpu;

	int cpu;

	cpumask_t tmp_map;

	physid_mask_t phys_cpu;

 	



	/*

	 * Validate version

	 */

	if (version == 0x0) {

		printk(KERN_WARNING "BIOS bug, APIC version is 0 for CPU#%d! "

				"fixing up to 0x10. (tell your hw vendor)\n",

				version);

		version = 0x10;

	}

	apic_version[apicid] = version;



	phys_cpu = apicid_to_cpu_present(apicid);

	physids_or(phys_cpu_present_map, phys_cpu_present_map, phys_cpu);



	if (num_processors >= NR_CPUS) {

		printk(KERN_WARNING "WARNING: NR_CPUS limit of %i reached."

			"  Processor ignored.\n", NR_CPUS);

		return;

	}



	if (num_processors >= maxcpus) {

		printk(KERN_WARNING "WARNING: maxcpus limit of %i reached."

			" Processor ignored.\n", maxcpus);

		return;

	}



	num_processors++;

	cpus_complement(tmp_map, cpu_present_map);

	cpu = first_cpu(tmp_map);



	if (apicid == boot_cpu_physical_apicid)

		/*

		 * x86_bios_cpu_apicid is required to have processors listed

		 * in same order as logical cpu numbers. Hence the first

		 * entry is BSP, and so on.

		 */

		cpu = 0;



	/*

	 * Would be preferable to switch to bigsmp when CONFIG_HOTPLUG_CPU=y

	 * but we need to work other dependencies like SMP_SUSPEND etc

	 * before this can be done without some confusion.

	 * if (CPU_HOTPLUG_ENABLED || num_processors > 8)

	 *       - Ashok Raj <ashok.raj@intel.com>

	 */

	if (num_processors > 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_SMP

	/* are we being called early in kernel startup? */

	if (x86_cpu_to_apicid_early_ptr) {

		u16 *cpu_to_apicid = x86_cpu_to_apicid_early_ptr;

		u16 *bios_cpu_apicid = x86_bios_cpu_apicid_early_ptr;



		cpu_to_apicid[cpu] = apicid;

		bios_cpu_apicid[cpu] = apicid;

	} else {

		per_cpu(x86_cpu_to_apicid, cpu) = apicid;

		per_cpu(x86_bios_cpu_apicid, cpu) = apicid;

	}

#endif

	cpu_set(cpu, cpu_possible_map);

	cpu_set(cpu, cpu_present_map);

}



static void __cpuinit MP_processor_info(struct mpc_config_processor *m)

{

	int apicid;



	if (!(m->mpc_cpuflag & CPU_ENABLED)) {

		disabled_cpus++;

		return;
@@ -184,80 +263,7 @@ static void __cpuinit MP_processor_info (struct mpc_config_processor *m) 
		boot_cpu_physical_apicid = m->mpc_apicid;

	}



	ver = m->mpc_apicver;



	/*

	 * Validate version

	 */

	if (ver == 0x0) {

		printk(KERN_WARNING "BIOS bug, APIC version is 0 for CPU#%d! "

				"fixing up to 0x10. (tell your hw vendor)\n",

				m->mpc_apicid);

		ver = 0x10;

	}

	apic_version[m->mpc_apicid] = ver;



	phys_cpu = apicid_to_cpu_present(apicid);

	physids_or(phys_cpu_present_map, phys_cpu_present_map, phys_cpu);



	if (num_processors >= NR_CPUS) {

		printk(KERN_WARNING "WARNING: NR_CPUS limit of %i reached."

			"  Processor ignored.\n", NR_CPUS);

		return;

	}



	if (num_processors >= maxcpus) {

		printk(KERN_WARNING "WARNING: maxcpus limit of %i reached."

			" Processor ignored.\n", maxcpus);

		return;

	}



	num_processors++;

	cpus_complement(tmp_map, cpu_present_map);

	cpu = first_cpu(tmp_map);



	if (m->mpc_cpuflag & CPU_BOOTPROCESSOR)

		/*

		 * x86_bios_cpu_apicid is required to have processors listed

		 * in same order as logical cpu numbers. Hence the first

		 * entry is BSP, and so on.

		 */

		cpu = 0;



	/*

	 * Would be preferable to switch to bigsmp when CONFIG_HOTPLUG_CPU=y

	 * but we need to work other dependencies like SMP_SUSPEND etc

	 * before this can be done without some confusion.

	 * if (CPU_HOTPLUG_ENABLED || num_processors > 8)

	 *       - Ashok Raj <ashok.raj@intel.com>

	 */

	if (num_processors > 8) {

		switch (boot_cpu_data.x86_vendor) {

		case X86_VENDOR_INTEL:

			if (!APIC_XAPIC(ver)) {

				def_to_bigsmp = 0;

				break;

			}

			/* If P4 and above fall through */

		case X86_VENDOR_AMD:

			def_to_bigsmp = 1;

		}

	}

#ifdef CONFIG_SMP

	/* are we being called early in kernel startup? */

	if (x86_cpu_to_apicid_early_ptr) {

		u16 *cpu_to_apicid = x86_cpu_to_apicid_early_ptr;

		u16 *bios_cpu_apicid = x86_bios_cpu_apicid_early_ptr;



		cpu_to_apicid[cpu] = m->mpc_apicid;

		bios_cpu_apicid[cpu] = m->mpc_apicid;

	} else {

		per_cpu(x86_cpu_to_apicid, cpu) = m->mpc_apicid;

		per_cpu(x86_bios_cpu_apicid, cpu) = m->mpc_apicid;

	}

#endif

	cpu_set(cpu, cpu_possible_map);

	cpu_set(cpu, cpu_present_map);

	generic_processor_info(apicid, m->mpc_apicver);

}



static void __init MP_bus_info (struct mpc_config_bus *m)

CRA Git | Maintained and supported by SUSTech CRA and CCSE