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authorTony Ambardar <itugrok@yahoo.com>2020-07-26 07:51:34 -0700
committerStijn Tintel <stijn@linux-ipv6.be>2022-05-18 13:32:06 +0300
commit531e0399cd7fca9e1a88520b817ac036da204c1c (patch)
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parent44bcad24b6f330aae73994e881e25df0fd7a490d (diff)
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build: add option KERNEL_DEBUG_INFO_BTF
Generate BTF (BPF Type Format) information from DWARF debug info. This is embedded in the kernel and exported via sysfs as /sys/kernel/btf/vmlinux. BTF data enhances kernel portability and introspection for BPF programs. Selecting this also enables the dwarves host package which provides the pahole tool used for BTF encoding. Test using: "bpftool btf dump file /sys/kernel/btf/vmlinux format c" This needs to depend on KERNEL_DEBUG_INFO_REDUCED not being set, otherwise we can enable both KERNEL_DEBUG_INFO_BTF and KERNEL_DEBUG_INFO_REDUCED, which will result in undefined behaviour. Signed-off-by: Tony Ambardar <itugrok@yahoo.com> Signed-off-by: Felix Fietkau <nbd@nbd.name> [split DEBUG_INFO_REDUCED into separate commit, add dependency] Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
Diffstat (limited to 'target/linux/layerscape')
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