mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-21 08:17:42 +07:00
7ec7fb3942
None of these (init|exit) functions is called from other functions which
is outside the kernel module mechanism or kernel itself, so mark them as
{static|__init|__exit}.
Signed-off-by: Qinghuang Feng <qhfeng.kernel@gmail.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
44 lines
927 B
C
44 lines
927 B
C
/*
|
|
* tracepoint-probe-sample2.c
|
|
*
|
|
* 2nd sample tracepoint probes.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/fs.h>
|
|
#include "tp-samples-trace.h"
|
|
|
|
/*
|
|
* Here the caller only guarantees locking for struct file and struct inode.
|
|
* Locking must therefore be done in the probe to use the dentry.
|
|
*/
|
|
static void probe_subsys_event(struct inode *inode, struct file *file)
|
|
{
|
|
printk(KERN_INFO "Event is encountered with inode number %lu\n",
|
|
inode->i_ino);
|
|
}
|
|
|
|
static int __init tp_sample_trace_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = register_trace_subsys_event(probe_subsys_event);
|
|
WARN_ON(ret);
|
|
|
|
return 0;
|
|
}
|
|
|
|
module_init(tp_sample_trace_init);
|
|
|
|
static void __exit tp_sample_trace_exit(void)
|
|
{
|
|
unregister_trace_subsys_event(probe_subsys_event);
|
|
tracepoint_synchronize_unregister();
|
|
}
|
|
|
|
module_exit(tp_sample_trace_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Mathieu Desnoyers");
|
|
MODULE_DESCRIPTION("Tracepoint Probes Samples");
|