Keep track of number of context switches per CPU

Change-Id: I7a2194c8777a7efcd34e1ed7f4734da03fb4d433
2019-09-26 12:24:18 +09:00
parent 17a8f68d60
commit 1afc3d9b70
2 changed files with 6 additions and 2 deletions
--- a/kernel/process.c
+++ b/kernel/process.c
@@ -3518,8 +3518,11 @@ void schedule(void)
 	set_timer(1);

 	if (switch_ctx) {
-		dkprintf("schedule: %d => %d \n",
-		        prev ? prev->tid : 0, next ? next->tid : 0);
+		++cpu_local_var(nr_ctx_switches);
+		dkprintf("%s: %d => %d [ctx sws: %lu]\n",
+				__func__,
+				prev ? prev->tid : 0, next ? next->tid : 0,
+				cpu_local_var(nr_ctx_switches));

 		if (prev && prev->ptrace_debugreg) {
 			save_debugreg(prev->ptrace_debugreg);