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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
ce4fecf1fe
90% of the usage of device node's full_name is printing it out in a
kernel message. However, storing the full path for every node is
wasteful and redundant. With a custom format specifier, we can generate
the full path at run-time and eventually remove the full path from every
node.
For instance typical use is:
pr_info("Frobbing node %s\n", node->full_name);
Which can be written now as:
pr_info("Frobbing node %pOF\n", node);
'%pO' is the base specifier to represent kobjects with '%pOF'
representing struct device_node. Currently, struct device_node is the
only supported type of kobject.
More fine-grained control of formatting includes printing the name,
flags, path-spec name and others, explained in the documentation entry.
Originally written by Pantelis, but pretty much rewrote the core
function using existing string/number functions. The 2 passes were
unnecessary and have been removed. Also, updated the checkpatch.pl
check. The unittest code was written by Grant Likely.
Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Rob Herring <robh@kernel.org>
38 lines
562 B
Plaintext
38 lines
562 B
Plaintext
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/ {
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testcase-data {
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platform-tests {
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#address-cells = <1>;
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#size-cells = <0>;
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test-device@0 {
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compatible = "test-device";
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reg = <0x0>;
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#address-cells = <1>;
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#size-cells = <0>;
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dev@100 {
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compatible = "test-sub-device";
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reg = <0x100>;
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};
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};
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test-device@1 {
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compatible = "test-device";
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reg = <0x1>;
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#address-cells = <1>;
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#size-cells = <0>;
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dev@100 {
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compatible = "test-sub-device",
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"test-compat2",
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"test-compat3";
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reg = <0x100>;
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};
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};
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};
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};
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};
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