1 files changed, 0 insertions, 100 deletions
diff --git a/vendor/github.com/cilium/ebpf/internal/feature.go b/vendor/github.com/cilium/ebpf/internal/feature.go
deleted file mode 100644
index 0a6c2d1d5..000000000
--- a/vendor/github.com/cilium/ebpf/internal/feature.go
+++ /dev/null
@@ -1,100 +0,0 @@
-package internal
-
-import (
-	"errors"
-	"fmt"
-	"sync"
-)
-
-// ErrNotSupported indicates that a feature is not supported by the current kernel.
-var ErrNotSupported = errors.New("not supported")
-
-// UnsupportedFeatureError is returned by FeatureTest() functions.
-type UnsupportedFeatureError struct {
-	// The minimum Linux mainline version required for this feature.
-	// Used for the error string, and for sanity checking during testing.
-	MinimumVersion Version
-
-	// The name of the feature that isn't supported.
-	Name string
-}
-
-func (ufe *UnsupportedFeatureError) Error() string {
-	if ufe.MinimumVersion.Unspecified() {
-		return fmt.Sprintf("%s not supported", ufe.Name)
-	}
-	return fmt.Sprintf("%s not supported (requires >= %s)", ufe.Name, ufe.MinimumVersion)
-}
-
-// Is indicates that UnsupportedFeatureError is ErrNotSupported.
-func (ufe *UnsupportedFeatureError) Is(target error) bool {
-	return target == ErrNotSupported
-}
-
-type featureTest struct {
-	sync.RWMutex
-	successful bool
-	result     error
-}
-
-// FeatureTestFn is used to determine whether the kernel supports
-// a certain feature.
-//
-// The return values have the following semantics:
-//
-//   err == ErrNotSupported: the feature is not available
-//   err == nil: the feature is available
-//   err != nil: the test couldn't be executed
-type FeatureTestFn func() error
-
-// FeatureTest wraps a function so that it is run at most once.
-//
-// name should identify the tested feature, while version must be in the
-// form Major.Minor[.Patch].
-//
-// Returns an error wrapping ErrNotSupported if the feature is not supported.
-func FeatureTest(name, version string, fn FeatureTestFn) func() error {
-	ft := new(featureTest)
-	return func() error {
-		ft.RLock()
-		if ft.successful {
-			defer ft.RUnlock()
-			return ft.result
-		}
-		ft.RUnlock()
-		ft.Lock()
-		defer ft.Unlock()
-		// check one more time on the off
-		// chance that two go routines
-		// were able to call into the write
-		// lock
-		if ft.successful {
-			return ft.result
-		}
-		err := fn()
-		switch {
-		case errors.Is(err, ErrNotSupported):
-			v, err := NewVersion(version)
-			if err != nil {
-				return err
-			}
-
-			ft.result = &UnsupportedFeatureError{
-				MinimumVersion: v,
-				Name:           name,
-			}
-			fallthrough
-
-		case err == nil:
-			ft.successful = true
-
-		default:
-			// We couldn't execute the feature test to a point
-			// where it could make a determination.
-			// Don't cache the result, just return it.
-			return fmt.Errorf("detect support for %s: %w", name, err)
-		}
-
-		return ft.result
-	}
-}