From c43fcbdf6093d716fe6ced15dabdad9fc69ac088 Mon Sep 17 00:00:00 2001
From: oxmc7769 <oxmc7769.mail@gmail.com>
Date: Sun, 23 Mar 2025 03:21:43 -0700
Subject: [PATCH] Patch for missing cpu model from /proc/cpuinfo

---
 include/glibtop/sysinfo.h |  2 ++
 sysdeps/linux/sysinfo.c   | 50 ++++++++++++++++++++++++++++++++++++++-
 2 files changed, 51 insertions(+), 1 deletion(-)

diff --git a/include/glibtop/sysinfo.h b/include/glibtop/sysinfo.h
index bc249513..980e653e 100644
--- a/include/glibtop/sysinfo.h
+++ b/include/glibtop/sysinfo.h
@@ -53,6 +53,8 @@ struct _glibtop_sysinfo
 	glibtop_entry cpuinfo [GLIBTOP_NCPU];
 };
 
+const char *decode_cpu_part(unsigned int part);
+
 #define glibtop_get_sysinfo_r	glibtop_get_sysinfo_s
 
 const glibtop_sysinfo *glibtop_get_sysinfo_s (glibtop *server);
diff --git a/sysdeps/linux/sysinfo.c b/sysdeps/linux/sysinfo.c
index 7dbd5eeb..9b792220 100644
--- a/sysdeps/linux/sysinfo.c
+++ b/sysdeps/linux/sysinfo.c
@@ -33,6 +33,39 @@ static const unsigned long _glibtop_sysdeps_sysinfo =
 
 static glibtop_sysinfo sysinfo = { .flags = 0 };
 
+/* Lookup table for CPU part decoding */
+static const struct {
+    unsigned int part;
+    const char *model;
+} cpu_part_lookup[] = {
+    { 0xd0b, "Cortex-A78" },
+    { 0xd0c, "Cortex-X1" },
+    { 0xd40, "Neoverse-N1" },
+    { 0xd41, "Cortex-A78AE" },
+    { 0xd42, "Cortex-A710" },
+    { 0xd44, "Cortex-X2" },
+    { 0xd4a, "Neoverse-V1" },
+    { 0xd4b, "Neoverse-N2" },
+    { 0xd4c, "Cortex-A715" },
+    { 0xd4d, "Cortex-X3" },
+    { 0xd49, "Cortex-A520" },
+    { 0xd4e, "Cortex-A720" },
+    { 0xd4f, "Cortex-X4" },
+    { 0xd08, "Cortex-A55" },
+    { 0x0000, "Unknown" } // Default fallback
+};
+
+
+/* Function to decode CPU part */
+const char *decode_cpu_part(unsigned int part) {
+    for (int i = 0; cpu_part_lookup[i].part != 0x0000; i++) {
+        if (cpu_part_lookup[i].part == part) {
+            return cpu_part_lookup[i].model;
+        }
+    }
+    return "Unknown";
+}
+
 static void
 init_sysinfo (glibtop *server)
 {
@@ -77,6 +110,9 @@ init_sysinfo (glibtop *server)
 		/* "<key>    : <value>" */
 		parts = g_strsplit_set(*this_proc, ":\n", 0);
 
+		unsigned int cpu_part = 0;
+        gboolean has_model = FALSE;
+
 		for(p = parts; *p && *(p+1); p += 2) {
 
 			/* stole the allocated memory */
@@ -85,15 +121,27 @@ init_sysinfo (glibtop *server)
 
 			g_ptr_array_add(cpuinfo->labels, key);
 			g_hash_table_insert(cpuinfo->values, key, value);
+
+			/* Extract CPU part */
+            if (g_strcmp0(key, "CPU part") == 0) {
+                cpu_part = strtoul(value, NULL, 16);
+            }
+            if (g_strcmp0(key, "model name") == 0) {
+                has_model = TRUE;
+            }
 		}
 
+		/* If model name is missing, add it */
+        if (!has_model && cpu_part != 0) {
+            const char *decoded_model = decode_cpu_part(cpu_part);
+            g_hash_table_insert(cpuinfo->values, g_strdup("model name"), g_strdup(decoded_model));
+        }
 
 		/* the last key has no value and has not been added */
 		if(*p) g_free(*p);
 
 		/* just g_free instead of g_strvfree because we stole
 		   the memory*/
-
 		g_free(parts);
 
 		sysinfo.ncpu++;