malloc_simple: Add logging of allocations

It is sometimes useful to see what memory is being allocated early during
boot. Add logging to support this, using a new LOGC_ALLOC category.

Signed-off-by: Simon Glass <sjg@chromium.org>

common/malloc_simple.c

@@ -5,6 +5,8 @@
  * Copyright (c) 2014 Google, Inc
  */
 
+#define LOG_CATEGORY LOGC_ALLOC
+
 #include <common.h>
 #include <malloc.h>
 #include <mapmem.h>
@@ -12,40 +14,47 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-void *malloc_simple(size_t bytes)
-{
-	ulong new_ptr;
-	void *ptr;
-
-	new_ptr = gd->malloc_ptr + bytes;
-	debug("%s: size=%zx, ptr=%lx, limit=%lx: ", __func__, bytes, new_ptr,
-	      gd->malloc_limit);
-	if (new_ptr > gd->malloc_limit) {
-		debug("space exhausted\n");
-		return NULL;
-	}
-	ptr = map_sysmem(gd->malloc_base + gd->malloc_ptr, bytes);
-	gd->malloc_ptr = ALIGN(new_ptr, sizeof(new_ptr));
-	debug("%lx\n", (ulong)ptr);
-
-	return ptr;
-}
-
-void *memalign_simple(size_t align, size_t bytes)
+static void *alloc_simple(size_t bytes, int align)
 {
 	ulong addr, new_ptr;
 	void *ptr;
 
 	addr = ALIGN(gd->malloc_base + gd->malloc_ptr, align);
 	new_ptr = addr + bytes - gd->malloc_base;
+	log_debug("size=%zx, ptr=%lx, limit=%lx: ", bytes, new_ptr,
+		  gd->malloc_limit);
 	if (new_ptr > gd->malloc_limit) {
-		debug("space exhausted\n");
+		log_err("alloc space exhausted\n");
 		return NULL;
 	}
 
 	ptr = map_sysmem(addr, bytes);
 	gd->malloc_ptr = ALIGN(new_ptr, sizeof(new_ptr));
-	debug("%lx\n", (ulong)ptr);
+
+	return ptr;
+}
+
+void *malloc_simple(size_t bytes)
+{
+	void *ptr;
+
+	ptr = alloc_simple(bytes, 1);
+	if (!ptr)
+		return ptr;
+
+	log_debug("%lx\n", (ulong)ptr);
+
+	return ptr;
+}
+
+void *memalign_simple(size_t align, size_t bytes)
+{
+	void *ptr;
+
+	ptr = alloc_simple(bytes, align);
+	if (!ptr)
+		return ptr;
+	log_debug("aligned to %lx\n", (ulong)ptr);
 
 	return ptr;
 }
@@ -57,9 +66,16 @@ void *calloc(size_t nmemb, size_t elem_size)
 	void *ptr;
 
 	ptr = malloc(size);
-	if (ptr)
-		memset(ptr, '\0', size);
+	if (!ptr)
+		return ptr;
+	memset(ptr, '\0', size);
 
 	return ptr;
 }
 #endif
+
+void malloc_simple_info(void)
+{
+	log_info("malloc_simple: %lx bytes used, %lx remain\n", gd->malloc_ptr,
+		 CONFIG_VAL(SYS_MALLOC_F_LEN) - gd->malloc_ptr);
+}

include/log.h

@@ -114,7 +114,7 @@ int _log(enum log_category_t cat, enum log_level_t level, const char *file,
 /* Emit a log record if the level is less that the maximum */
 #define log(_cat, _level, _fmt, _args...) ({ \
 	int _l = _level; \
-	if (_l <= _LOG_MAX_LEVEL) \
+	if (CONFIG_IS_ENABLED(LOG) && _l <= _LOG_MAX_LEVEL) \
 		_log((enum log_category_t)(_cat), _l, __FILE__, __LINE__, \
 		      __func__, \
 		      pr_fmt(_fmt), ##_args); \

include/malloc.h

@@ -880,6 +880,7 @@ static inline void free(void *ptr) {}
 void *calloc(size_t nmemb, size_t size);
 void *memalign_simple(size_t alignment, size_t bytes);
 void *realloc_simple(void *ptr, size_t size);
+void malloc_simple_info(void);
 #else
 
 # ifdef USE_DL_PREFIX