diff --git a/extra/exports b/extra/exports
index d679db1bfdc8aef0d11970ef7a6f57c24b3e3e8c..85437e5c42ceac7b77b7246e45ce5688731d0b79 100644
--- a/extra/exports
+++ b/extra/exports
@@ -675,3 +675,6 @@ log_destroy
 log_new
 log_say
 log_set_format_by_name
+
+# picodata log filter hook
+_say_filter
diff --git a/src/lib/core/say.c b/src/lib/core/say.c
index b332286cbabf920f64afb3e29c8af04e7e02ee2a..486b84afa2125aefd73d9219072bdb40375af246 100644
--- a/src/lib/core/say.c
+++ b/src/lib/core/say.c
@@ -1372,6 +1372,19 @@ format_log_entry(struct log *log, int level, const char *module,
 	return total;
 }
 
+/**
+ * Hook defined in picodata that allows to filter logs from files that match
+ * a specified pattern. For instance, "pgproto=info" keeps log entries with
+ * a corresponding log level and that come from files with "pgproto" in their
+ * path.
+ * NULL is a valid value, meaning that there are no special rules to be
+ * applied, so all the filtering is handled by tarantool.
+ *
+ * Returns true for entries that should be kept, false otherwise.
+ */
+bool
+(*_say_filter)(int level, const char *file) = NULL;
+
 int
 log_vsay(struct log *log, int level, bool check_level, const char *module,
 	 const char *filename, int line, const char *error, const char *format,
@@ -1382,6 +1395,10 @@ log_vsay(struct log *log, int level, bool check_level, const char *module,
 	if (check_level && level > log->level)
 		goto out;
 
+	/* Apply filtering rules, if any. */
+	if (_say_filter && !_say_filter(level, filename))
+		goto out;
+
 	total = format_log_entry(log, level, module, filename, line, error,
 				 format, ap);
 	if (total <= 0)