commit fbdb511811b97a641779c7a29eb96de104deb4dd
author developer <developer@mediatek.com> Mon Aug 21 15:12:14 2023 +0800
committer developer <developer@mediatek.com> Tue Aug 29 09:09:29 2023 +0800
tree 2f9576639378f8a9c145d8320008974a78ea53f4
parent ee4932333ce31cb49925ce3b255f05745e986d63

[][openwrt][mt7988][tops][add cpu utilization fetching]

[Description]
Add cpu utilization fetching and refactor debugfs of trm and tops

Via reading debugfs file(/sys/kernel/debug/tops/trm/cpu-utilization)
to fetch each core's cpu utilization

[Release-log]
N/A

Change-Id: Iff4c965294c3054a54ba92263191856cd5c722c7
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7907085

package-21.02/kernel/tops/src/trm-fs.c

diff --git a/package-21.02/kernel/tops/src/trm-fs.c b/package-21.02/kernel/tops/src/trm-fs.c
index 3728ee1..81ae77a 100644
--- a/package-21.02/kernel/tops/src/trm-fs.c
+++ b/package-21.02/kernel/tops/src/trm-fs.c
@@ -11,13 +11,13 @@
 #include <linux/err.h>
 #include <linux/relay.h>
 
+#include "trm-debugfs.h"
 #include "trm-fs.h"
 #include "trm-mcu.h"
 #include "trm.h"
 
 #define RLY_RETRY_NUM				3
 
-static struct dentry *debugfs_dir;
 static struct rchan *relay;
 static bool trm_fs_is_init;
 
@@ -56,7 +56,7 @@
 {
 	struct dentry *debugfs_file;
 
-	debugfs_file = debugfs_create_file("dump_data", mode,
+	debugfs_file = debugfs_create_file("dump-data", mode,
 					   parent, buf,
 					   &relay_file_operations);
 
@@ -80,39 +80,22 @@
 	};
 	int ret = 0;
 
-	if (!debugfs_dir) {
-		debugfs_dir = debugfs_create_dir("tops", NULL);
-		if (IS_ERR(debugfs_dir)) {
-			ret = PTR_ERR(debugfs_dir);
-			goto out;
-		}
-	}
+	if (!trm_debugfs_root)
+		return -ENOENT;
 
 	if (!relay) {
-		relay = relay_open("dump_data", debugfs_dir,
+		relay = relay_open("dump-data", trm_debugfs_root,
 				   RLY_DUMP_SUBBUF_SZ,
 				   RLY_DUMP_SUBBUF_NUM,
 				   &relay_cb, NULL);
-		if (!relay) {
-			ret = -EINVAL;
-			goto err_debugfs_remove;
-		}
+		if (!relay)
+			return -EINVAL;
 	}
 
 	relay_reset(relay);
 
 	trm_fs_is_init = true;
 
-out:
-	return ret;
-
-err_debugfs_remove:
-	trm_fs_is_init = false;
-
-	debugfs_remove(debugfs_dir);
-
-	debugfs_dir = NULL;
-
 	return ret;
 }
 
@@ -121,6 +104,4 @@
 	trm_fs_is_init = false;
 
 	relay_close(relay);
-
-	debugfs_remove(debugfs_dir);
 }