diff options
| author | Vasant Hegde <hegdevasant@linux.vnet.ibm.com> | 2013-08-12 12:05:57 (GMT) |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-08-14 05:33:17 (GMT) |
| commit | 15863ff3b8dae4cacd831ce10aa34992e9ababb0 (patch) | |
| tree | b061c136ecd6204ce9084f4e4d4232b5404e8b39 /arch/powerpc/include/asm | |
| parent | 202127031a14f244c15ae4434993d36bd10a439c (diff) | |
| download | linux-fsl-qoriq-15863ff3b8dae4cacd831ce10aa34992e9ababb0.tar.xz | |
powerpc: Make chip-id information available to userspace
So far "/sys/devices/system/cpu/cpuX/topology/physical_package_id"
was always default (-1) on ppc64 architecture.
Now, some systems have an ibm,chip-id property in the cpu nodes in
the device tree. On these systems, we now use this information to
display physical_package_id.
Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Signed-off-by: Shivaprasad G Bhat <sbhat@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm')
| -rw-r--r-- | arch/powerpc/include/asm/smp.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/topology.h | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/smp.h b/arch/powerpc/include/asm/smp.h index 9a5e71b..98da78e 100644 --- a/arch/powerpc/include/asm/smp.h +++ b/arch/powerpc/include/asm/smp.h @@ -112,6 +112,7 @@ static inline struct cpumask *cpu_core_mask(int cpu) } extern int cpu_to_core_id(int cpu); +extern int cpu_to_chip_id(int cpu); /* Since OpenPIC has only 4 IPIs, we use slightly different message numbers. * diff --git a/arch/powerpc/include/asm/topology.h b/arch/powerpc/include/asm/topology.h index 161ab66..89e3ef2 100644 --- a/arch/powerpc/include/asm/topology.h +++ b/arch/powerpc/include/asm/topology.h @@ -96,6 +96,7 @@ static inline int prrn_is_enabled(void) #ifdef CONFIG_PPC64 #include <asm/smp.h> +#define topology_physical_package_id(cpu) (cpu_to_chip_id(cpu)) #define topology_thread_cpumask(cpu) (per_cpu(cpu_sibling_map, cpu)) #define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu)) #define topology_core_id(cpu) (cpu_to_core_id(cpu)) |