Moved to correct version of the code

src/btop_config.cpp

@@ -1,3 +1,4 @@
+// clang-format off
 /* Copyright 2021 Aristocratos (jakob@qvantnet.com)
 
    Licensed under the Apache License, Version 2.0 (the "License");
@@ -96,6 +97,8 @@ namespace Config {
 
 		{"proc_left",			"#* Show proc box on left side of screen instead of right."},
 
+        {"proc_filter_kernel",  "#* Filter processes tied to the Linux kernel(similar behavior to htop)."},
+
 		{"cpu_graph_upper", 	"#* Sets the CPU stat shown in upper half of the CPU graph, \"total\" is always available.\n"
 								"#* Select from a list of detected attributes from the options menu."},
 
@@ -222,6 +225,7 @@ namespace Config {
 		{"proc_mem_bytes", true},
 		{"proc_info_smaps", false},
 		{"proc_left", false},
+        {"proc_filter_kernel", false},
 		{"cpu_invert_lower", true},
 		{"cpu_single_graph", false},
 		{"cpu_bottom", false},

src/linux/btop_collect.cpp

@@ -4,7 +4,7 @@
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at
 
-	   http://www.apache.org/licenses/LICENSE-2.0
+           http://www.apache.org/licenses/LICENSE-2.0
 
    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
@@ -15,6 +15,7 @@
 indent = tab
 tab-size = 4
 */
+// clang-format off
 
 #include <fstream>
 #include <ranges>
@@ -1258,6 +1259,19 @@ namespace Proc {
 	int filter_found = 0;
 
 	detail_container detailed;
+    uint64_t kthreadd_pid{};
+
+    static void filter_kernel(const bool& should_filter) {
+        if (!should_filter) {
+          return;
+        }
+
+        // Filter out kernel processes
+        auto keraser = rng::remove_if(current_procs, [](const proc_info& curr) {
+          return curr.pid == kthreadd_pid || curr.ppid == kthreadd_pid;
+        });
+        current_procs.erase(keraser.begin(), keraser.end());
+    }
 
 	//* Generate process tree list
 	void _tree_gen(proc_info& cur_proc, vector<proc_info>& in_procs, vector<std::reference_wrapper<proc_info>>& out_procs, int cur_depth, const bool collapsed, const string& filter, bool found=false, const bool no_update=false, const bool should_filter=false) {
@@ -1425,6 +1439,7 @@ namespace Proc {
 		const auto& reverse = Config::getB("proc_reversed");
 		const auto& filter = Config::getS("proc_filter");
 		const auto& per_core = Config::getB("proc_per_core");
+        const auto& should_filter_kernel = Config::getB("proc_filter_kernel");
 		const auto& tree = Config::getB("proc_tree");
 		const auto& show_detailed = Config::getB("show_detailed");
 		const size_t detailed_pid = Config::getI("detailed_pid");
@@ -1489,8 +1504,8 @@ namespace Proc {
 			//? Iterate over all pids in /proc
 			vector<size_t> found;
 			for (const auto& d: fs::directory_iterator(Shared::procPath)) {
-				if (Runner::stopping)
-					return current_procs;
+				if (Runner::stopping) 
+return current_procs; 
 				if (pread.is_open()) pread.close();
 
 				const string pid_str = d.path().filename();
@@ -1515,6 +1530,9 @@ namespace Proc {
 					pread.open(d.path() / "comm");
 					if (not pread.good()) continue;
 					getline(pread, new_proc.name);
+                    if (new_proc.name == "kthreadd") {
+                        kthreadd_pid = new_proc.pid;            
+                    }
 					pread.close();
 					//? Check for whitespace characters in name and set offset to get correct fields from stat file
 					new_proc.name_offset = rng::count(new_proc.name, ' ');
@@ -1671,6 +1689,8 @@ namespace Proc {
 
 			old_cputimes = cputimes;
 		}
+
+        filter_kernel(should_filter_kernel); // Filter here to make sorting faster.
 		//* ---------------------------------------------Collection done-----------------------------------------------
 
 		//* Sort processes