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| author | Stefan Reinauer <reinauer@chromium.org> | 2012-03-30 13:52:58 -0700 |
|---|---|---|
| committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2012-04-02 18:39:58 +0200 |
| commit | dc8448fd8be4768ef9d5f9b8cbcf28db0a2029be (patch) | |
| tree | d4c7e2ab6cbfb649ee4421d734dddc050c8768a6 | |
| parent | d40393e3903e57496afcfc88ec094ae17f0e9437 (diff) | |
| download | coreboot-dc8448fd8be4768ef9d5f9b8cbcf28db0a2029be.tar.xz | |
Add a helper function to determine the number of enabled CPUs
Change-Id: Ia72926002571e0f250849fa5db048bd8b2e92400
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: http://review.coreboot.org/821
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
| -rw-r--r-- | src/devices/device_util.c | 18 | ||||
| -rw-r--r-- | src/include/device/device.h | 1 |
2 files changed, 19 insertions, 0 deletions
diff --git a/src/devices/device_util.c b/src/devices/device_util.c index 526490a8c1..5225938e19 100644 --- a/src/devices/device_util.c +++ b/src/devices/device_util.c @@ -850,3 +850,21 @@ u32 find_pci_tolm(struct bus *bus) return tolm; } + +/* Count of enabled CPUs */ +int dev_count_cpu(void) +{ + device_t cpu; + int count = 0; + + for (cpu = all_devices; cpu; cpu = cpu->next) { + if ((cpu->path.type != DEVICE_PATH_APIC) || + (cpu->bus->dev->path.type != DEVICE_PATH_APIC_CLUSTER)) + continue; + if (!cpu->enabled) + continue; + count++; + } + + return count; +} diff --git a/src/include/device/device.h b/src/include/device/device.h index c097f5796b..0aea1d6087 100644 --- a/src/include/device/device.h +++ b/src/include/device/device.h @@ -133,6 +133,7 @@ device_t dev_find_class (unsigned int class, device_t from); device_t dev_find_slot (unsigned int bus, unsigned int devfn); device_t dev_find_slot_on_smbus (unsigned int bus, unsigned int addr); device_t dev_find_lapic(unsigned apic_id); +int dev_count_cpu(void); /* Debug functions */ void print_resource_tree(struct device * root, int debug_level, |