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authorVasant Hegde <hegdevasant@linux.vnet.ibm.com>2013-08-12 17:35:57 +0530
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-08-14 15:33:17 +1000
commit15863ff3b8dae4cacd831ce10aa34992e9ababb0 (patch)
treeb061c136ecd6204ce9084f4e4d4232b5404e8b39 /arch/powerpc/include/asm/smp.h
parent202127031a14f244c15ae4434993d36bd10a439c (diff)
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op-kernel-dev-15863ff3b8dae4cacd831ce10aa34992e9ababb0.tar.gz
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/smp.h')
-rw-r--r--arch/powerpc/include/asm/smp.h1
1 files changed, 1 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.
*
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