AcoSail/kernel_optimize_test
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init, tracing: instrument security and console initcall trace events

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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/1521765208.19745.2.camel@polymtl.ca

Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Abderrahmane Benbachir <abderrahmane.benbachir@polymtl.ca>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Abderrahmane Benbachir 2018-03-22 20:33:28 -04:00 committed by Steven Rostedt (VMware)
parent 4ee7c60de8
commit 58eacfffc4
2 changed files with 13 additions and 2 deletions
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7
kernel/printk/printk.c
View File

@ -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++;
}
}

8
security/security.c
View File

@ -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++;
}
}