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package/libbpf: update UAPI header installation work-around

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bpftrace often needs very recent kernel headers, more recent than the
runtime version actually needed. We already had a workaround in
libbpf making sure that if the kernel headers are older than 6.1, we
would install the libbpf provided headers instead.

As we are about to update bpftrace to a newer version that uses
BPF_TRACE_KPROBE_SESSION, which was introduced in Linux 6.10, we need
to update this workaround accordingly and ensure that the libbpf
header is installed if the kernel headers are older than 6.10.

This is necessary for the update of bpftrace to 0.26.1.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>
This commit is contained in:
Thomas Petazzoni
2026-08-27 11:55:16 +02:00
committed by Julien Olivain
parent a51521cbe6
commit e9c540ddd2
1 changed files with 3 additions and 5 deletions
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8
package/libbpf/libbpf.mk
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@@ -18,14 +18,12 @@ define LIBBPF_BUILD_CMDS
-C $(@D)/src
endef
# bpftrace uses bpf_iter_link_info.task that was added since kernel 6.1
# bpftrace uses BPF_TRACE_KPROBE_SESSION that was added since kernel 6.10
# so we need to update some uapi headers in STAGING_DIR if the toolchain
# is build with linux-headers < 6.1.
# is build with linux-headers < 6.1.0
# Otherwise bpftrace is broken due to out of date linux/bpf.h installed
# by the toolchain.
# https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=f0d74c4da1f060d2a66976193712a5e6abd361f5
# https://github.com/bpftrace/bpftrace/commit/7578314df67df6bbdffaf493ff3b4d182b235b34
ifeq ($(BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_1),)
ifeq ($(BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_10),)
LIBBPF_UPDATE_UAPI_HEADERS = install_uapi_headers UAPIDIR=/usr/include/bpf
define LIBBPF_FIX_STAGING_PC