1 files changed, 0 insertions, 94 deletions
diff --git a/tools/syz-diff/patch.go b/tools/syz-diff/patch.go
deleted file mode 100644
index 98a464ca0..000000000
--- a/tools/syz-diff/patch.go
+++ /dev/null
@@ -1,94 +0,0 @@
-// Copyright 2024 syzkaller project authors. All rights reserved.
-// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
-
-package main
-
-import (
-	"sort"
-	"strings"
-	"time"
-
-	"github.com/google/syzkaller/pkg/log"
-	"github.com/google/syzkaller/pkg/mgrconfig"
-	"github.com/google/syzkaller/pkg/osutil"
-	"github.com/google/syzkaller/pkg/vcs"
-)
-
-func PatchFocusAreas(cfg *mgrconfig.Config, gitPatch []byte) {
-	const maxAffectedByHeader = 50
-
-	names := map[string]bool{}
-	includedNames := map[string]bool{}
-	for _, file := range vcs.ParseGitDiff(gitPatch) {
-		names[file] = true
-
-		if strings.HasSuffix(file, ".h") && cfg.KernelSrc != "" {
-			// Ideally, we should combine this with the recompilation process - then we know
-			// exactly which files were affected by the patch.
-			out, err := osutil.RunCmd(time.Minute, cfg.KernelSrc, "/usr/bin/grep",
-				"-rl", "--include", `*.c`, `<`+strings.TrimPrefix(file, "include/")+`>`)
-			if err != nil {
-				log.Logf(0, "failed to grep for the header usages: %v", err)
-				continue
-			}
-			lines := strings.Split(string(out), "\n")
-			if len(lines) >= maxAffectedByHeader {
-				// It's too widespread. It won't help us focus on anything.
-				log.Logf(0, "the header %q is included in too many files (%d)", file, len(lines))
-				continue
-			}
-			for _, name := range lines {
-				name = strings.TrimSpace(name)
-				if name == "" {
-					continue
-				}
-				includedNames[name] = true
-			}
-		}
-	}
-
-	var namesList, includedList []string
-	for name := range names {
-		namesList = append(namesList, name)
-	}
-	for name := range includedNames {
-		if names[name] {
-			continue
-		}
-		includedList = append(includedList, name)
-	}
-
-	if len(namesList) > 0 {
-		sort.Strings(namesList)
-		log.Logf(0, "adding the following modified files to focus_order: %q", namesList)
-		cfg.Experimental.FocusAreas = append(cfg.Experimental.FocusAreas,
-			mgrconfig.FocusArea{
-				Name: "modified",
-				Filter: mgrconfig.CovFilterCfg{
-					Files: namesList,
-				},
-				Weight: 3.0,
-			})
-	}
-
-	if len(includedList) > 0 {
-		sort.Strings(includedList)
-		log.Logf(0, "adding the following included files to focus_order: %q", includedList)
-		cfg.Experimental.FocusAreas = append(cfg.Experimental.FocusAreas,
-			mgrconfig.FocusArea{
-				Name: "included",
-				Filter: mgrconfig.CovFilterCfg{
-					Files: includedList,
-				},
-				Weight: 2.0,
-			})
-	}
-
-	// Still fuzz the rest of the kernel.
-	if len(cfg.Experimental.FocusAreas) > 0 {
-		cfg.Experimental.FocusAreas = append(cfg.Experimental.FocusAreas,
-			mgrconfig.FocusArea{
-				Weight: 1.0,
-			})
-	}
-}