!756 fix: 修复重复执行内存用例导致系统卡死问题

Merge pull request !756 from Harylee/print

kernel/common/los_printf.c

@@ -47,6 +47,7 @@
 #include "los_excinfo_pri.h"
 #endif
 #include "los_exc_pri.h"
+#include "los_sched_pri.h"
 
 #define SIZEBUF  256
 
@@ -94,7 +95,7 @@ STATIC VOID ConsoleOutput(const CHAR *str, UINT32 len)
 
     for (;;) {
         cnt = write(STDOUT_FILENO, str + written, (size_t)toWrite);
-        if ((cnt < 0) || ((cnt == 0) && (OS_INT_ACTIVE)) || (toWrite == cnt)) {
+        if ((cnt < 0) || ((cnt == 0) && ((!OsPreemptable()) || (OS_INT_ACTIVE))) || (toWrite == cnt)) {
             break;
         }
         written += cnt;