libbpf

mirror of https://github.com/netdata/libbpf.git synced 2026-03-18 15:29:06 +08:00

Files

Song Liu 0c0f4a57da bpf: Introduce helper bpf_get_branch_snapshot

Introduce bpf_get_branch_snapshot(), which allows tracing pogram to get
branch trace from hardware (e.g. Intel LBR). To use the feature, the
user need to create perf_event with proper branch_record filtering
on each cpu, and then calls bpf_get_branch_snapshot in the bpf function.
On Intel CPUs, VLBR event (raw event 0x1b00) can be use for this.

Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210910183352.3151445-3-songliubraving@fb.com

2021-09-17 14:03:39 -07:00

bpf_common.h

mirror uapi/linux/bpf_common.h file (#2 )

2018-10-12 12:57:55 -07:00

bpf.h

bpf: Introduce helper bpf_get_branch_snapshot

2021-09-17 14:03:39 -07:00

btf.h

bpf: Add BTF_KIND_FLOAT to uapi

2021-03-05 14:15:26 -08:00

if_link.h

ipv6: add IFLA_INET6_RA_MTU to expose mtu value