kernel: make kmalloc accept a numeric "tag" instead of a freeform description

This will both let me save space in the allocation header, and make the
debugprint more readable.

1 files changed, 25 insertions, 3 deletions

diff --git a/src/kernel/malloc.h b/src/kernel/malloc.h
index bda2745..a38d49b 100644
--- a/src/kernel/malloc.h
+++ b/src/kernel/malloc.h
@@ -10,6 +10,28 @@
  * dead code. */
 #define KMALLOC_MAX 1024
 
+/* also see the string table in malloc.c */
+enum MallocTag {
+	TagInvalid,
+	TagKernelFs,
+	TagProcFs,
+	TagUserFs,
+	TagOpenPath,
+	TagMountPath,
+	TagMountUser,
+	TagMountRoot,
+	TagExecbuf,
+	TagVfsReq,
+	TagHandleset,
+	TagHandle,
+	TagProcess,
+	TagProcessHandle,
+	TagDevTime,
+	TagRootCache,
+	TagPageRefcount,
+	TagLast,
+};
+
 void mem_init(void *memtop);
 void mem_reserve(void *addr, size_t len);
 void mem_debugprint(void);
@@ -24,12 +46,12 @@ void *page_zalloc(size_t pages);
 // frees `pages` consecutive pages starting from *first
 void page_free(void *first, size_t pages);
 
-void *kmalloc(size_t len, const char *desc);
+void *kmalloc(size_t len, enum MallocTag tag);
 void kfree(void *ptr);
 
 // TODO calloc
-static inline void *kzalloc(size_t len, const char *desc) {
-	void *b = kmalloc(len, desc);
+static inline void *kzalloc(size_t len, enum MallocTag tag) {
+	void *b = kmalloc(len, tag);
 	memset(b, 0, len);
 	return b;
 }