WIP: pc sampling

Author: gnurizen

go.mod

@@ -1,6 +1,6 @@
 module github.com/parca-dev/parca-agent
 
-go 1.25.0
+go 1.25.1
 
 require (
 	buf.build/gen/go/parca-dev/parca/grpc/go v1.5.1-20250212095114-4db6f2d46517.2
@@ -36,17 +36,17 @@ require (
 	go.opentelemetry.io/contrib/instrumentation/net/http/httptrace/otelhttptrace v0.60.0
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.60.0
 	go.opentelemetry.io/ebpf-profiler v0.0.0-20250519164423-009a07f3803c
-	go.opentelemetry.io/otel v1.41.0
+	go.opentelemetry.io/otel v1.42.0
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.40.0
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.35.0
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.35.0
 	go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.35.0
-	go.opentelemetry.io/otel/metric v1.41.0
+	go.opentelemetry.io/otel/metric v1.42.0
 	go.opentelemetry.io/otel/sdk v1.40.0
-	go.opentelemetry.io/otel/trace v1.41.0
+	go.opentelemetry.io/otel/trace v1.42.0
 	golang.org/x/exp v0.0.0-20260218203240-3dfff04db8fa
-	golang.org/x/sync v0.19.0
-	golang.org/x/sys v0.41.0
+	golang.org/x/sync v0.20.0
+	golang.org/x/sys v0.42.0
 	google.golang.org/grpc v1.79.3
 	google.golang.org/protobuf v1.36.11
 	gopkg.in/yaml.v3 v3.0.1
@@ -68,7 +68,7 @@ require (
 	github.com/blang/semver/v4 v4.0.0 // indirect
 	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
-	github.com/cilium/ebpf v0.20.0 // indirect
+	github.com/cilium/ebpf v0.21.0 // indirect
 	github.com/containerd/cgroups/v3 v3.0.5 // indirect
 	github.com/containerd/containerd/api v1.8.0 // indirect
 	github.com/containerd/continuity v0.4.5 // indirect
@@ -89,6 +89,7 @@ require (
 	github.com/emicklei/go-restful/v3 v3.12.2 // indirect
 	github.com/felixge/httpsnoop v1.0.4 // indirect
 	github.com/fxamacker/cbor/v2 v2.8.0 // indirect
+	github.com/gnurizen/sass-table v0.0.1 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-openapi/jsonpointer v0.21.1 // indirect
@@ -104,7 +105,7 @@ require (
 	github.com/google/pprof v0.0.0-20250607225305-033d6d78b36a // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/grafana/regexp v0.0.0-20240518133315-a468a5bfb3bc // indirect
-	github.com/grpc-ecosystem/grpc-gateway/v2 v2.27.2 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.28.0 // indirect
 	github.com/hashicorp/go-version v1.8.0 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
@@ -115,7 +116,7 @@ require (
 	github.com/mailru/easyjson v0.9.0 // indirect
 	github.com/mdlayher/kobject v0.0.0-20200520190114-19ca17470d7d // indirect
 	github.com/mdlayher/netlink v1.7.2 // indirect
-	github.com/mdlayher/socket v0.4.1 // indirect
+	github.com/mdlayher/socket v0.5.1 // indirect
 	github.com/minio/sha256-simd v1.0.1 // indirect
 	github.com/moby/docker-image-spec v1.3.1 // indirect
 	github.com/moby/locker v1.0.1 // indirect
@@ -133,14 +134,15 @@ require (
 	github.com/opencontainers/image-spec v1.1.1 // indirect
 	github.com/opencontainers/runtime-spec v1.2.1 // indirect
 	github.com/opencontainers/selinux v1.13.0 // indirect
+	github.com/parca-dev/usdt v0.0.2 // indirect
 	github.com/pbnjay/memory v0.0.0-20210728143218-7b4eea64cf58 // indirect
 	github.com/pierrec/lz4/v4 v4.1.22 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/prometheus/client_model v0.6.2 // indirect
 	github.com/prometheus/procfs v0.16.0 // indirect
-	github.com/spf13/cobra v1.8.1 // indirect
-	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/spf13/cobra v1.9.1 // indirect
+	github.com/spf13/pflag v1.0.7 // indirect
 	github.com/x448/float16 v0.8.4 // indirect
 	go.opencensus.io v0.24.0 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
@@ -149,21 +151,21 @@ require (
 	go.opentelemetry.io/collector/featuregate v1.53.0 // indirect
 	go.opentelemetry.io/collector/pdata v1.53.0 // indirect
 	go.opentelemetry.io/collector/pdata/pprofile v0.147.0 // indirect
-	go.opentelemetry.io/proto/otlp v1.9.0 // indirect
+	go.opentelemetry.io/proto/otlp v1.10.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
-	golang.org/x/arch v0.24.0 // indirect
+	golang.org/x/arch v0.25.0 // indirect
 	golang.org/x/mod v0.33.0 // indirect
 	golang.org/x/net v0.51.0 // indirect
-	golang.org/x/oauth2 v0.34.0 // indirect
+	golang.org/x/oauth2 v0.35.0 // indirect
 	golang.org/x/telemetry v0.0.0-20260209163413-e7419c687ee4 // indirect
 	golang.org/x/term v0.40.0 // indirect
 	golang.org/x/text v0.34.0 // indirect
 	golang.org/x/time v0.12.0 // indirect
 	golang.org/x/tools v0.42.0 // indirect
 	golang.org/x/xerrors v0.0.0-20240903120638-7835f813f4da // indirect
 	google.golang.org/genproto v0.0.0-20250414145226-207652e42e2e // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20251202230838-ff82c1b0f217 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20251222181119-0a764e51fe1b // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20260209200024-4cfbd4190f57 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20260209200024-4cfbd4190f57 // indirect
 	gopkg.in/evanphx/json-patch.v4 v4.12.0 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
@@ -177,4 +179,4 @@ require (
 	sigs.k8s.io/yaml v1.4.0 // indirect
 )
 
-replace go.opentelemetry.io/ebpf-profiler => github.com/parca-dev/opentelemetry-ebpf-profiler v0.0.202611-0.20260318195408-a0d0c958888a
+replace go.opentelemetry.io/ebpf-profiler => github.com/parca-dev/opentelemetry-ebpf-profiler v0.0.0-20260415144604-71cfec4d54b9