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x86, apic: Use .apicdrivers section for the apic drivers list 

This will eliminate the need for apic_probe[], as the probing
now will happen based on the apic drivers order in the
.apcidrivers section.

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/20110521005526.164277071@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Suresh Siddha 2011-05-20 17:51:18 -07:00 committed by Ingo Molnar
parent 107e0e0cd8
commit 8b37e88061
2 changed files with 36 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
arch/x86/kernel/apic/probe_32.c
View File

@ -206,14 +206,14 @@ static struct apic *apic_probe[] __initdata = {
static int cmdline_apic __initdata;
static int __init parse_apic(char *arg)
{
int i;
struct apic **drv;
if (!arg)
return -EINVAL;
for (i = 0; apic_probe[i]; i++) {
if (!strcmp(apic_probe[i]->name, arg)) {
apic = apic_probe[i];
for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
if (!strcmp((*drv)->name, arg)) {
apic = *drv;
cmdline_apic = 1;
return 0;
}
@ -247,15 +247,16 @@ void __init generic_bigsmp_probe(void)
void __init generic_apic_probe(void)
{
if (!cmdline_apic) {
int i;
for (i = 0; apic_probe[i]; i++) {
if (apic_probe[i]->probe()) {
apic = apic_probe[i];
struct apic **drv;
for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
if ((*drv)->probe()) {
apic = *drv;
break;
}
}
/* Not visible without early console */
if (!apic_probe[i])
if (drv == __apicdrivers_end)
panic("Didn't find an APIC driver");
}
printk(KERN_INFO "Using APIC driver %s\n", apic->name);
@ -266,16 +267,16 @@ void __init generic_apic_probe(void)
int __init
generic_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
{
int i;
struct apic **drv;
for (i = 0; apic_probe[i]; ++i) {
if (!apic_probe[i]->mps_oem_check)
for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
if (!((*drv)->mps_oem_check))
continue;
if (!apic_probe[i]->mps_oem_check(mpc, oem, productid))
if (!(*drv)->mps_oem_check(mpc, oem, productid))
continue;
if (!cmdline_apic) {
apic = apic_probe[i];
apic = *drv;
printk(KERN_INFO "Switched to APIC driver `%s'.\n",
apic->name);
}
@ -286,16 +287,16 @@ generic_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
int __init default_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
{
int i;
struct apic **drv;
for (i = 0; apic_probe[i]; ++i) {
if (!apic_probe[i]->acpi_madt_oem_check)
for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
if (!(*drv)->acpi_madt_oem_check)
continue;
if (!apic_probe[i]->acpi_madt_oem_check(oem_id, oem_table_id))
if (!(*drv)->acpi_madt_oem_check(oem_id, oem_table_id))
continue;
if (!cmdline_apic) {
apic = apic_probe[i];
apic = *drv;
printk(KERN_INFO "Switched to APIC driver `%s'.\n",
apic->name);
}

28
arch/x86/kernel/apic/probe_64.c
View File

@ -54,19 +54,21 @@ static int apicid_phys_pkg_id(int initial_apic_id, int index_msb)
*/
void __init default_setup_apic_routing(void)
{
int i;
struct apic **drv;
enable_IR_x2apic();
for (i = 0; apic_probe[i]; ++i) {
if (apic_probe[i]->probe()) {
apic = apic_probe[i];
for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
if ((*drv)->probe && (*drv)->probe()) {
if (apic != *drv) {
apic = *drv;
pr_info("Switched APIC routing to %s.\n",
apic->name);
}
break;
}
}
printk(KERN_INFO "APIC routing finalized to %s.\n", apic->name);
if (is_vsmp_box()) {
/* need to update phys_pkg_id */
apic->phys_pkg_id = apicid_phys_pkg_id;
@ -82,13 +84,15 @@ void apic_send_IPI_self(int vector)
int __init default_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
{
int i;
struct apic **drv;
for (i = 0; apic_probe[i]; ++i) {
if (apic_probe[i]->acpi_madt_oem_check(oem_id, oem_table_id)) {
apic = apic_probe[i];
printk(KERN_INFO "Setting APIC routing to %s.\n",
apic->name);
for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
if ((*drv)->acpi_madt_oem_check(oem_id, oem_table_id)) {
if (apic != *drv) {
apic = *drv;
pr_info("Setting APIC routing to %s.\n",
apic->name);
}
return 1;
}
}