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authorDaniel T. Lee <danieltimlee@gmail.com>2020-08-23 11:53:34 +0300
committerAlexei Starovoitov <ast@kernel.org>2020-08-25 06:59:35 +0300
commitf0c328f8af5d920a68f8217aec76d9a45288cef1 (patch)
tree21b45294c5ef83066fac094eab783df052db0015 /samples/bpf/syscall_tp_kern.c
parent3677d0a13171bb1dc8db0af84d48dea14a899962 (diff)
downloadlinux-f0c328f8af5d920a68f8217aec76d9a45288cef1.tar.xz
samples: bpf: Refactor tracepoint tracing programs with libbpf
For the problem of increasing fragmentation of the bpf loader programs, instead of using bpf_loader.o, which is used in samples/bpf, this commit refactors the existing tracepoint tracing programs with libbbpf bpf loader. - Adding a tracepoint event and attaching a bpf program to it was done through bpf_program_attach(). - Instead of using the existing BPF MAP definition, MAP definition has been refactored with the new BTF-defined MAP format. Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200823085334.9413-4-danieltimlee@gmail.com
Diffstat (limited to 'samples/bpf/syscall_tp_kern.c')
-rw-r--r--samples/bpf/syscall_tp_kern.c24
1 files changed, 12 insertions, 12 deletions
diff --git a/samples/bpf/syscall_tp_kern.c b/samples/bpf/syscall_tp_kern.c
index 5a62b03b1f88..50231c2eff9c 100644
--- a/samples/bpf/syscall_tp_kern.c
+++ b/samples/bpf/syscall_tp_kern.c
@@ -18,19 +18,19 @@ struct syscalls_exit_open_args {
long ret;
};
-struct bpf_map_def SEC("maps") enter_open_map = {
- .type = BPF_MAP_TYPE_ARRAY,
- .key_size = sizeof(u32),
- .value_size = sizeof(u32),
- .max_entries = 1,
-};
+struct {
+ __uint(type, BPF_MAP_TYPE_ARRAY);
+ __type(key, u32);
+ __type(value, u32);
+ __uint(max_entries, 1);
+} enter_open_map SEC(".maps");
-struct bpf_map_def SEC("maps") exit_open_map = {
- .type = BPF_MAP_TYPE_ARRAY,
- .key_size = sizeof(u32),
- .value_size = sizeof(u32),
- .max_entries = 1,
-};
+struct {
+ __uint(type, BPF_MAP_TYPE_ARRAY);
+ __type(key, u32);
+ __type(value, u32);
+ __uint(max_entries, 1);
+} exit_open_map SEC(".maps");
static __always_inline void count(void *map)
{