feat: add lua disable config

qlndzt · qlndzt · commit 35ca9596059a · 2026-03-27T11:27:53.000Z
diff --git a/agent/src/config/config.rs b/agent/src/config/config.rs
@@ -1210,6 +1210,7 @@ pub struct EbpfProfileLanguages {
     pub python_disabled: bool,
     pub php_disabled: bool,
     pub nodejs_disabled: bool,
+    pub lua_disabled: bool,
 }
 
 impl Default for EbpfProfileLanguages {
@@ -1218,6 +1219,7 @@ impl Default for EbpfProfileLanguages {
             python_disabled: false,
             php_disabled: false,
             nodejs_disabled: false,
+            lua_disabled: false,
         }
     }
 }
diff --git a/agent/src/ebpf/mod.rs b/agent/src/ebpf/mod.rs
@@ -128,6 +128,8 @@ pub const FEATURE_PROFILE_PYTHON: c_int = 9;
 pub const FEATURE_PROFILE_PHP: c_int = 10;
 #[allow(dead_code)]
 pub const FEATURE_PROFILE_V8: c_int = 11;
+#[allow(dead_code)]
+pub const FEATURE_PROFILE_LUA: c_int = 12;
 
 //追踪器当前状态
 #[allow(dead_code)]
diff --git a/agent/src/ebpf/user/config.h b/agent/src/ebpf/user/config.h
@@ -89,7 +89,7 @@
 #define PROG_ONCPU_OUTPUT_FOR_PE        "df_PE_oncpu_output"
 
 // lua related maps
-#define MAP_LUA_LANG_FLAGS_NAME         "__lang_flags_map"
+#define MAP_LUA_LANG_FLAGS_NAME         "__lua_lang_flags_map"
 #define MAP_LUA_UNWIND_INFO_NAME        "__lua_unwind_info_map"
 #define MAP_LUA_OFFSETS_NAME            "__lua_offsets_map"
 #define MAP_LUAJIT_OFFSETS_NAME         "__luajit_offsets_map"
@@ -181,6 +181,7 @@ enum cfg_feature_idx {
 	FEATURE_PROFILE_PYTHON,
 	FEATURE_PROFILE_PHP,
 	FEATURE_PROFILE_V8,
+	FEATURE_PROFILE_LUA,
 	FEATURE_CPU_BALANCER,
 	FEATURE_MAX,
 };
@@ -196,6 +197,7 @@ enum cfg_feature_idx {
 #define FEATURE_FLAG_PROFILE_PYTHON		(1 << FEATURE_PROFILE_PYTHON)
 #define FEATURE_FLAG_PROFILE_PHP		(1 << FEATURE_PROFILE_PHP)
 #define FEATURE_FLAG_PROFILE_V8			(1 << FEATURE_PROFILE_V8)
+#define FEATURE_FLAG_PROFILE_LUA		(1 << FEATURE_PROFILE_LUA)
 #define FEATURE_FLAG_CPU_BALANCER		(1 << FEATURE_CPU_BALANCER)
 
 #define FEATURE_FLAG_PROFILE				(FEATURE_FLAG_PROFILE_ONCPU | FEATURE_FLAG_PROFILE_OFFCPU | FEATURE_FLAG_PROFILE_MEMORY)
diff --git a/agent/src/ebpf/user/load.c b/agent/src/ebpf/user/load.c
@@ -1338,6 +1338,9 @@ int ebpf_obj_load(struct ebpf_object *obj)
 		if (!python_profiler_enabled()) {
 			enabled_feats &= ~FEATURE_FLAG_PROFILE_PYTHON;
 		}
+		if (!lua_profiler_enabled()) {
+			enabled_feats &= ~FEATURE_FLAG_PROFILE_LUA;
+		}
 		enabled_feats &= ~extended_feature_flags(map);
 		if (enabled_feats == 0 &&
 		    map->def.type != BPF_MAP_TYPE_PROG_ARRAY &&
@@ -1359,7 +1362,8 @@ int ebpf_obj_load(struct ebpf_object *obj)
 		}
 		// Log language profiler map creation with max_entries for verification
 		if (strstr(map->name, "php_") || strstr(map->name, "v8_") ||
-		    strstr(map->name, "python_")) {
+		    strstr(map->name, "python_") || strstr(map->name, "lua_") ||
+		    strstr(map->name, "luajit_")) {
 			ebpf_info
 			    ("Language profiler map created: name=%s, max_entries=%d (1 means disabled)\n",
 			     map->name, map->def.max_entries);
diff --git a/agent/src/ebpf/user/tracer.c b/agent/src/ebpf/user/tracer.c
@@ -2023,6 +2023,11 @@ bool python_profiler_enabled(void)
 	return is_feature_regex_set(FEATURE_PROFILE_PYTHON);
 }
 
+bool lua_profiler_enabled(void)
+{
+	return is_feature_regex_set(FEATURE_PROFILE_LUA);
+}
+
 static void init_thread_ids(void)
 {
 	thread_ids.entries = NULL;
diff --git a/agent/src/ebpf/user/tracer.h b/agent/src/ebpf/user/tracer.h
@@ -629,6 +629,7 @@ bool is_feature_regex_set(int feature);
 bool php_profiler_enabled(void);
 bool v8_profiler_enabled(void);
 bool python_profiler_enabled(void);
+bool lua_profiler_enabled(void);
 int bpf_tracer_init(const char *log_file, bool is_stdout);
 int tracer_bpf_load(struct bpf_tracer *tracer);
 int tracer_probes_init(struct bpf_tracer *tracer);
diff --git a/agent/src/ebpf_dispatcher.rs b/agent/src/ebpf_dispatcher.rs
@@ -1131,6 +1131,12 @@ impl EbpfCollector {
                     CString::new(".*").unwrap().as_c_str().as_ptr(),
                 );
             }
+            if !languages.lua_disabled {
+                ebpf::set_feature_regex(
+                    ebpf::FEATURE_PROFILE_LUA,
+                    CString::new(".*").unwrap().as_c_str().as_ptr(),
+                );
+            }
 
             #[cfg(feature = "extended_observability")]
             {
diff --git a/server/agent_config/README-CH.md b/server/agent_config/README-CH.md
@@ -5172,6 +5172,35 @@ inputs:
 禁用 Node.js（V8）解释器剖析。禁用后将不采集 Node.js 进程的函数调用栈，
 可节省约 6.4 MB 内核内存（v8_unwind_info_map）。
 
+##### 禁用 Lua 剖析 {#inputs.ebpf.profile.languages.lua_disabled}
+
+**标签**:
+
+<mark>agent_restart</mark>
+
+**FQCN**:
+
+`inputs.ebpf.profile.languages.lua_disabled`
+
+**默认值**:
+```yaml
+inputs:
+  ebpf:
+    profile:
+      languages:
+        lua_disabled: false
+```
+
+**模式**:
+| Key  | Value                        |
+| ---- | ---------------------------- |
+| Type | bool |
+
+**详细描述**:
+
+禁用 Lua 解释器剖析。禁用后将不采集 Lua 进程的函数调用栈，
+可节省约 13 MB 内核内存（lua_tstate_map、lua_lang_flags_map、lua_unwind_info_map、lua_offsets_map、luajit_offsets_map）。
+
 ### 网络 {#inputs.ebpf.network}
 
 #### NIC optimization Enabled {#inputs.ebpf.network.nic_opt_enabled}
diff --git a/server/agent_config/README.md b/server/agent_config/README.md
@@ -5311,6 +5311,35 @@ inputs:
 Disable Node.js (V8) interpreter profiling. When disabled, Node.js process stack traces will not be collected,
 saving approximately 6.4 MB of kernel memory (v8_unwind_info_map).
 
+##### Lua profiling disabled {#inputs.ebpf.profile.languages.lua_disabled}
+
+**Tags**:
+
+<mark>agent_restart</mark>
+
+**FQCN**:
+
+`inputs.ebpf.profile.languages.lua_disabled`
+
+**Default value**:
+```yaml
+inputs:
+  ebpf:
+    profile:
+      languages:
+        lua_disabled: false
+```
+
+**Schema**:
+| Key  | Value                        |
+| ---- | ---------------------------- |
+| Type | bool |
+
+**Description**:
+
+Disable Lua interpreter profiling. When disabled, Lua process stack traces will not be collected,
+saving approximately 13 MB of kernel memory (lua_tstate_map, lua_lang_flags_map, lua_unwind_info_map, lua_offsets_map, luajit_offsets_map).
+
 ### Network {#inputs.ebpf.network}
 
 #### NIC optimization Enabled {#inputs.ebpf.network.nic_opt_enabled}
diff --git a/server/agent_config/template.yaml b/server/agent_config/template.yaml
@@ -3873,6 +3873,32 @@ inputs:
         #     禁用 Node.js（V8）解释器剖析。禁用后将不采集 Node.js 进程的函数调用栈，
         #     可节省约 6.4 MB 内核内存（v8_unwind_info_map）。
         nodejs_disabled: false
+        # type: bool
+        # name:
+        #   en: Lua profiling disabled
+        #   ch: 禁用 Lua 剖析
+        # unit:
+        # range: []
+        # enum_options: []
+        # modification: agent_restart
+        # ee_feature: false
+        # description:
+        #   en: |-
+        #     Disable Lua interpreter profiling. When disabled, Lua process stack traces will not be collected,
+        #     saving approximately 13 MB of kernel memory.
+        #     This controls the following eBPF maps:
+        #     - lua_tstate_map: Per-thread lua_State cache (~7 MB)
+        #     - lua_lang_flags_map: Per-process Lua/LuaJIT type flags (~2.5 MB)
+        #     - lua_unwind_info_map: Per-process unwinding metadata (~3 MB)
+        #     - lua_offsets_map, luajit_offsets_map: Lua/LuaJIT struct offset tables (< 2 KB total)
+        #   ch: |-
+        #     禁用 Lua 解释器剖析功能。禁用后将不会采集 Lua 进程的函数调用栈，可节省约 13 MB 的内核内存。
+        #     此配置项控制以下 eBPF maps 的创建：
+        #     - lua_tstate_map：缓存每线程 lua_State 栈（按线程，容量较大，约 7 MB）
+        #     - lua_lang_flags_map：记录进程 Lua/LuaJIT 类型标记（约 2.5 MB）
+        #     - lua_unwind_info_map：存储进程级 unwinding 元信息（约 3 MB）
+        #     - lua_offsets_map、luajit_offsets_map：存储 Lua/LuaJIT 结构偏移表（总计 < 2 KB）
+        lua_disabled: false
     # type: section
     # name:
     #   en: Network

Original file line number	Diff line number	Diff line change
`@@ -1210,6 +1210,7 @@ pub struct EbpfProfileLanguages {`
`1210`	`1210`	`pub python_disabled: bool,`
`1211`	`1211`	`pub php_disabled: bool,`
`1212`	`1212`	`pub nodejs_disabled: bool,`
	`1213`	`+ pub lua_disabled: bool,`
`1213`	`1214`	`}`
`1214`	`1215`
`1215`	`1216`	`impl Default for EbpfProfileLanguages {`
`@@ -1218,6 +1219,7 @@ impl Default for EbpfProfileLanguages {`
`1218`	`1219`	`python_disabled: false,`
`1219`	`1220`	`php_disabled: false,`
`1220`	`1221`	`nodejs_disabled: false,`
	`1222`	`+ lua_disabled: false,`
`1221`	`1223`	`}`
`1222`	`1224`	`}`
`1223`	`1225`	`}`
Original file line number	Diff line number	Diff line change
`@@ -2023,6 +2023,11 @@ bool python_profiler_enabled(void)`
`2023`	`2023`	`return is_feature_regex_set(FEATURE_PROFILE_PYTHON);`
`2024`	`2024`	`}`
`2025`	`2025`
	`2026`	`+bool lua_profiler_enabled(void)`
	`2027`	`+{`
	`2028`	`+ return is_feature_regex_set(FEATURE_PROFILE_LUA);`
	`2029`	`+}`
	`2030`	`+`
`2026`	`2031`	`static void init_thread_ids(void)`
`2027`	`2032`	`{`
`2028`	`2033`	`thread_ids.entries = NULL;`
Original file line number	Diff line number	Diff line change
`@@ -1131,6 +1131,12 @@ impl EbpfCollector {`
`1131`	`1131`	`CString::new(".*").unwrap().as_c_str().as_ptr(),`
`1132`	`1132`	`);`
`1133`	`1133`	`}`
	`1134`	`+ if !languages.lua_disabled {`
	`1135`	`+ ebpf::set_feature_regex(`
	`1136`	`+ ebpf::FEATURE_PROFILE_LUA,`
	`1137`	`+ CString::new(".*").unwrap().as_c_str().as_ptr(),`
	`1138`	`+ );`
	`1139`	`+ }`
`1134`	`1140`
`1135`	`1141`	`#[cfg(feature = "extended_observability")]`
`1136`	`1142`	`{`