add audio

hc

2023-12-11 1f93a7dfd1f8d5ff7a5c53246c7534fe2332d6f4

 kernel/tools/lib/bpf/.gitignore
..
..
@@ -1,2 +1,9 @@
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+# SPDX-License-Identifier: GPL-2.0-only
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 libbpf_version.h
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+libbpf.pc
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 FEATURE-DUMP.libbpf
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+libbpf.so.*
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+TAGS
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+tags
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+cscope.*
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+/bpf_helper_defs.h