Commit 988f11e0 authored by liaohua's avatar liaohua Committed by Luis Chamberlain
Browse files

latencytop: move sysctl to its own file 



This moves latencytop sysctl to kernel/latencytop.c

Signed-off-by: default avatarliaohua <liaohua4@huawei.com>
Signed-off-by: default avatarLuis Chamberlain <mcgrof@kernel.org>
parent f8b7d2b4

include/linux/latencytop.h

+0 −3
Original line number Diff line number Diff line
@@ -38,9 +38,6 @@ account_scheduler_latency(struct task_struct *task, int usecs, int inter) 


void clear_tsk_latency_tracing(struct task_struct *p);



int sysctl_latencytop(struct ctl_table *table, int write, void *buffer,

		size_t *lenp, loff_t *ppos);



#else



static inline void

kernel/latencytop.c

+29 −12
Original line number Diff line number Diff line
@@ -55,6 +55,7 @@ 
#include <linux/sched/stat.h>

#include <linux/list.h>

#include <linux/stacktrace.h>

#include <linux/sysctl.h>



static DEFINE_RAW_SPINLOCK(latency_lock);
@@ -63,6 +64,31 @@ static struct latency_record latency_record[MAXLR]; 


int latencytop_enabled;



#ifdef CONFIG_SYSCTL

static int sysctl_latencytop(struct ctl_table *table, int write, void *buffer,

		size_t *lenp, loff_t *ppos)

{

	int err;



	err = proc_dointvec(table, write, buffer, lenp, ppos);

	if (latencytop_enabled)

		force_schedstat_enabled();



	return err;

}



static struct ctl_table latencytop_sysctl[] = {

	{

		.procname   = "latencytop",

		.data       = &latencytop_enabled,

		.maxlen     = sizeof(int),

		.mode       = 0644,

		.proc_handler   = sysctl_latencytop,

	},

	{}

};

#endif



void clear_tsk_latency_tracing(struct task_struct *p)

{

	unsigned long flags;
@@ -266,18 +292,9 @@ static const struct proc_ops lstats_proc_ops = { 
static int __init init_lstats_procfs(void)

{

	proc_create("latency_stats", 0644, NULL, &lstats_proc_ops);

#ifdef CONFIG_SYSCTL

	register_sysctl_init("kernel", latencytop_sysctl);

#endif

	return 0;

}



int sysctl_latencytop(struct ctl_table *table, int write, void *buffer,

		size_t *lenp, loff_t *ppos)

{

	int err;



	err = proc_dointvec(table, write, buffer, lenp, ppos);

	if (latencytop_enabled)

		force_schedstat_enabled();



	return err;

}

device_initcall(init_lstats_procfs);

kernel/sysctl.c

+0 −10
Original line number Diff line number Diff line
@@ -64,7 +64,6 @@ 
#include <linux/kexec.h>

#include <linux/mount.h>

#include <linux/userfaultfd_k.h>

#include <linux/latencytop.h>

#include <linux/pid.h>



#include "../lib/kstrtox.h"
@@ -1623,15 +1622,6 @@ static struct ctl_table kern_table[] = { 
		.extra1		= SYSCTL_NEG_ONE,

		.extra2		= SYSCTL_ONE,

	},

#endif

#ifdef CONFIG_LATENCYTOP

	{

		.procname	= "latencytop",

		.data		= &latencytop_enabled,

		.maxlen		= sizeof(int),

		.mode		= 0644,

		.proc_handler	= sysctl_latencytop,

	},

#endif

	{

		.procname	= "print-fatal-signals",