diff options
| author |   Nathan Lynch <ntl@pobox.com> | 2008-07-27 15:24:54 +1000 |
|---|---|---|
| committer |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-07-28 16:30:52 +1000 |
| commit | e9efed3b80a83e44b98fc626f3268ae072550b84 (patch) | |
| tree | cbe7cc897dc112e2eb93f9bbded5aa3a8e6e0bf3 /include/asm-powerpc/smp.h | |
| parent | powerpc: Make core sibling information available to userspace (diff) | |
| download | linux-dev-e9efed3b80a83e44b98fc626f3268ae072550b84.tar.xz linux-dev-e9efed3b80a83e44b98fc626f3268ae072550b84.zip | |
powerpc: Make core id information available to userspace
Existing Open Firmware practice is to report each processor core as a
separate node in the device tree. Report the value of the "reg" OF
property corresponding to a logical CPU's device node as the core_id
attribute in /sys/devices/system/cpu/cpu*/topology/core_id.
Signed-off-by: Nathan Lynch <ntl@pobox.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'include/asm-powerpc/smp.h')
| -rw-r--r-- | include/asm-powerpc/smp.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-powerpc/smp.h b/include/asm-powerpc/smp.h index 32e910006250..4d28e1e4521b 100644 --- a/include/asm-powerpc/smp.h +++ b/include/asm-powerpc/smp.h @@ -63,6 +63,7 @@ extern int smp_hw_index[]; DECLARE_PER_CPU(cpumask_t, cpu_sibling_map); DECLARE_PER_CPU(cpumask_t, cpu_core_map); +extern int cpu_to_core_id(int cpu); /* Since OpenPIC has only 4 IPIs, we use slightly different message numbers. * |