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authorSudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>2013-08-15 14:01:40 +0100
committerSudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>2013-08-21 10:24:44 +0100
commit183912d352a242a276a7877852f107459a13aff9 (patch)
treec9f10475a57b92ed1dc7f6c778e8953839955f36 /include/linux/cpu.h
parent819d596568d82ffb85b0b5989a1567810fe66098 (diff)
downloadop-kernel-dev-183912d352a242a276a7877852f107459a13aff9.zip
op-kernel-dev-183912d352a242a276a7877852f107459a13aff9.tar.gz
of: move of_get_cpu_node implementation to DT core library
This patch moves the generalized implementation of of_get_cpu_node from PowerPC to DT core library, thereby adding support for retrieving cpu node for a given logical cpu index on any architecture. The CPU subsystem can now use this function to assign of_node in the cpu device while registering CPUs. It is recommended to use these helper function only in pre-SMP/early initialisation stages to retrieve CPU device node pointers in logical ordering. Once the cpu devices are registered, it can be retrieved easily from cpu device of_node which avoids unnecessary parsing and matching. Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Acked-by: Rob Herring <rob.herring@calxeda.com> Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
Diffstat (limited to 'include/linux/cpu.h')
-rw-r--r--include/linux/cpu.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index ab0eade..3dfed2b 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -28,6 +28,7 @@ struct cpu {
extern int register_cpu(struct cpu *cpu, int num);
extern struct device *get_cpu_device(unsigned cpu);
extern bool cpu_is_hotpluggable(unsigned cpu);
+extern bool arch_match_cpu_phys_id(int cpu, u64 phys_id);
extern int cpu_add_dev_attr(struct device_attribute *attr);
extern void cpu_remove_dev_attr(struct device_attribute *attr);
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