bootstage: Allow marking a particular line of code

Add a function which allows a (file, function, line number) to be marked
in bootstage.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Che-Liang Chiou <clchiou@chromium.org>

1 files changed, 29 insertions, 0 deletions

diff --git a/common/bootstage.c b/common/bootstage.c
index 15afa24c44..c5c69961ac 100644
--- a/common/bootstage.c
+++ b/common/bootstage.c
@@ -30,6 +30,8 @@
 
 #include <common.h>
 #include <libfdt.h>
+#include <malloc.h>
+#include <linux/compiler.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -117,6 +119,33 @@ ulong bootstage_mark_name(enum bootstage_id id, const char *name)
 	return bootstage_add_record(id, name, flags, timer_get_boot_us());
 }
 
+ulong bootstage_mark_code(const char *file, const char *func, int linenum)
+{
+	char *str, *p;
+	__maybe_unused char *end;
+	int len = 0;
+
+	/* First work out the length we need to allocate */
+	if (linenum != -1)
+		len = 11;
+	if (func)
+		len += strlen(func);
+	if (file)
+		len += strlen(file);
+
+	str = malloc(len + 1);
+	p = str;
+	end = p + len;
+	if (file)
+		p += snprintf(p, end - p, "%s,", file);
+	if (linenum != -1)
+		p += snprintf(p, end - p, "%d", linenum);
+	if (func)
+		p += snprintf(p, end - p, ": %s", func);
+
+	return bootstage_mark_name(BOOTSTAGE_ID_ALLOC, str);
+}
+
 uint32_t bootstage_start(enum bootstage_id id, const char *name)
 {
 	struct bootstage_record *rec = &record[id];