init, tracing: instrument security and console initcall trace events

Trace events have been added around the initcall functions defined in init/main.c. But console and security have their own initcalls. This adds the trace events associated for those initcall functions. Link: http://lkml.kernel.org/r/[email protected] Cc: Ingo Molnar <[email protected]> Cc: Peter Zijlstra <[email protected]> Signed-off-by: Abderrahmane Benbachir <[email protected]> Signed-off-by: Steven Rostedt (VMware) <[email protected]>
laijs · Apr 6, 2018 · 58eacff · 58eacff
1 parent 4ee7c60
commit 58eacff
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Showing 2 changed files with 13 additions and 2 deletions.
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
@@ -52,6 +52,7 @@
 #include <linux/uaccess.h>
 #include <asm/sections.h>
 
+#include <trace/events/initcall.h>
 #define CREATE_TRACE_POINTS
 #include <trace/events/printk.h>
 
@@ -2781,6 +2782,7 @@ EXPORT_SYMBOL(unregister_console);
  */
 void __init console_init(void)
 {
+	int ret;
 	initcall_t *call;
 
 	/* Setup the default TTY line discipline. */
@@ -2791,8 +2793,11 @@ void __init console_init(void)
 	 * inform about problems etc..
 	 */
 	call = __con_initcall_start;
+	trace_initcall_level("console");
 	while (call < __con_initcall_end) {
-		(*call)();
+		trace_initcall_start((*call));
+		ret = (*call)();
+		trace_initcall_finish((*call), ret);
 		call++;
 	}
 }

diff --git a/security/security.c b/security/security.c
@@ -30,6 +30,8 @@
 #include <linux/string.h>
 #include <net/flow.h>
 
+#include <trace/events/initcall.h>
+
 #define MAX_LSM_EVM_XATTR	2
 
 /* Maximum number of letters for an LSM name string */
@@ -45,10 +47,14 @@ static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
 
 static void __init do_security_initcalls(void)
 {
+	int ret;
 	initcall_t *call;
 	call = __security_initcall_start;
+	trace_initcall_level("security");
 	while (call < __security_initcall_end) {
-		(*call) ();
+		trace_initcall_start((*call));
+		ret = (*call) ();
+		trace_initcall_finish((*call), ret);
 		call++;
 	}
 }