examples/rust: Update libbpf-rs to 0.22

Update the libbpf-rs (and libbpf-cargo) dependency to version 0.22 to
get the latest and greatest.

Signed-off-by: Daniel Müller <deso@posteo.net>

Author: d-e-s-o

examples/rust/Cargo.lock

@@ -8,11 +8,11 @@ edition = "2021"
 [dependencies]
 blazesym = { path = "../../../blazesym", features = ["tracing"] }
 clap = { version = "4.0", features = ["derive"] }
-libbpf-rs = "0.19"
+libbpf-rs = "0.22"
 libc = "*"
 nix = "0.24.1"
 tracing = "0.1"
 tracing-subscriber = {version = "0.3", features = ["ansi", "env-filter", "fmt"]}
 
 [build-dependencies]
-libbpf-cargo = "0.13"
+libbpf-cargo = "0.22"

examples/rust/profile/Cargo.toml

@@ -19,7 +19,7 @@ fn main() {
     let skel = Path::new("./src/bpf/.output/profile.skel.rs");
     SkeletonBuilder::new()
         .source(SRC)
-        .build_and_generate(&skel)
+        .build_and_generate(skel)
         .expect("bpf compilation failed");
     println!("cargo:rerun-if-changed={}", SRC);
 }

examples/rust/profile/build.rs

@@ -7,6 +7,9 @@ use blazesym::symbolize;
 use clap::ArgAction;
 use clap::Parser;
 
+use libbpf_rs::skel::OpenSkel as _;
+use libbpf_rs::skel::SkelBuilder as _;
+
 use nix::unistd::close;
 
 use tracing::subscriber::set_global_default as set_global_subscriber;
@@ -240,9 +243,10 @@ fn main() -> Result<(), Error> {
     let pefds = init_perf_monitor(freq);
     let _links = attach_perf_event(&pefds, skel.progs_mut().profile());
 
+    let maps = skel.maps();
     let mut builder = libbpf_rs::RingBufferBuilder::new();
     builder
-        .add(skel.maps().events(), move |data| {
+        .add(maps.events(), move |data| {
             event_handler(&symbolizer, data)
         })
         .unwrap();