mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-28 20:02:17 +00:00
![Eric W. Biederman](/assets/img/avatar_default.png)
All profile_handoff_task does is notify the task_free_notifier chain. The helpers task_handoff_register and task_handoff_unregister are used to add and delete entries from that chain and are never called. So remove the dead code and make it much easier to read and reason about __put_task_struct. Suggested-by: Al Viro <viro@zeniv.linux.org.uk> Link: https://lkml.kernel.org/r/87fspyw6m0.fsf@email.froward.int.ebiederm.org Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
91 lines
1.5 KiB
C
91 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _LINUX_PROFILE_H
|
|
#define _LINUX_PROFILE_H
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/cpumask.h>
|
|
#include <linux/cache.h>
|
|
|
|
#include <asm/errno.h>
|
|
|
|
#define CPU_PROFILING 1
|
|
#define SCHED_PROFILING 2
|
|
#define SLEEP_PROFILING 3
|
|
#define KVM_PROFILING 4
|
|
|
|
struct proc_dir_entry;
|
|
struct notifier_block;
|
|
|
|
#if defined(CONFIG_PROFILING) && defined(CONFIG_PROC_FS)
|
|
void create_prof_cpu_mask(void);
|
|
int create_proc_profile(void);
|
|
#else
|
|
static inline void create_prof_cpu_mask(void)
|
|
{
|
|
}
|
|
|
|
static inline int create_proc_profile(void)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_PROFILING
|
|
|
|
extern int prof_on __read_mostly;
|
|
|
|
/* init basic kernel profiler */
|
|
int profile_init(void);
|
|
int profile_setup(char *str);
|
|
void profile_tick(int type);
|
|
int setup_profiling_timer(unsigned int multiplier);
|
|
|
|
/*
|
|
* Add multiple profiler hits to a given address:
|
|
*/
|
|
void profile_hits(int type, void *ip, unsigned int nr_hits);
|
|
|
|
/*
|
|
* Single profiler hit:
|
|
*/
|
|
static inline void profile_hit(int type, void *ip)
|
|
{
|
|
/*
|
|
* Speedup for the common (no profiling enabled) case:
|
|
*/
|
|
if (unlikely(prof_on == type))
|
|
profile_hits(type, ip, 1);
|
|
}
|
|
|
|
struct task_struct;
|
|
struct mm_struct;
|
|
|
|
#else
|
|
|
|
#define prof_on 0
|
|
|
|
static inline int profile_init(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void profile_tick(int type)
|
|
{
|
|
return;
|
|
}
|
|
|
|
static inline void profile_hits(int type, void *ip, unsigned int nr_hits)
|
|
{
|
|
return;
|
|
}
|
|
|
|
static inline void profile_hit(int type, void *ip)
|
|
{
|
|
return;
|
|
}
|
|
|
|
|
|
#endif /* CONFIG_PROFILING */
|
|
|
|
#endif /* _LINUX_PROFILE_H */
|