p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

sched: Move deadline_period sysctls to deadline.c 

move deadline_period sysctls to deadline.c and use the new
register_sysctl_init() to register the sysctl interface.

Signed-off-by: Zhen Ni <nizhen@uniontech.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
This commit is contained in:
Zhen Ni 2022-02-15 19:46:00 +08:00 committed by Luis Chamberlain
parent d9ab0e63fa
commit 84227c1288
3 changed files with 34 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
include/linux/sched/sysctl.h
View File

@ -31,9 +31,6 @@ extern int sysctl_numa_balancing_mode;
#define sysctl_numa_balancing_mode 0
#endif
extern unsigned int sysctl_sched_dl_period_max;
extern unsigned int sysctl_sched_dl_period_min;
#ifdef CONFIG_UCLAMP_TASK
extern unsigned int sysctl_sched_uclamp_util_min;
extern unsigned int sysctl_sched_uclamp_util_max;

42
kernel/sched/deadline.c
View File

@ -16,6 +16,40 @@
* Fabio Checconi <fchecconi@gmail.com>
*/
/*
* Default limits for DL period; on the top end we guard against small util
* tasks still getting ridiculously long effective runtimes, on the bottom end we
* guard against timer DoS.
*/
static unsigned int sysctl_sched_dl_period_max = 1 << 22; /* ~4 seconds */
static unsigned int sysctl_sched_dl_period_min = 100; /* 100 us */
#ifdef CONFIG_SYSCTL
static struct ctl_table sched_dl_sysctls[] = {
{
.procname = "sched_deadline_period_max_us",
.data = &sysctl_sched_dl_period_max,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "sched_deadline_period_min_us",
.data = &sysctl_sched_dl_period_min,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{}
};
static int __init sched_dl_sysctl_init(void)
{
register_sysctl_init("kernel", sched_dl_sysctls);
return 0;
}
late_initcall(sched_dl_sysctl_init);
#endif
static inline struct task_struct *dl_task_of(struct sched_dl_entity *dl_se)
{
return container_of(dl_se, struct task_struct, dl);
@ -2879,14 +2913,6 @@ void __getparam_dl(struct task_struct *p, struct sched_attr *attr)
attr->sched_flags |= dl_se->flags;
}
/*
* Default limits for DL period; on the top end we guard against small util
* tasks still getting ridiculously long effective runtimes, on the bottom end we
* guard against timer DoS.
*/
unsigned int sysctl_sched_dl_period_max = 1 << 22; /* ~4 seconds */
unsigned int sysctl_sched_dl_period_min = 100; /* 100 us */
/*
* This function validates the new parameters of a -deadline task.
* We ask for the deadline not being zero, and greater or equal

14
kernel/sysctl.c
View File

@ -1681,20 +1681,6 @@ static struct ctl_table kern_table[] = {
.extra2 = SYSCTL_FOUR,
},
#endif /* CONFIG_NUMA_BALANCING */
{
.procname = "sched_deadline_period_max_us",
.data = &sysctl_sched_dl_period_max,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "sched_deadline_period_min_us",
.data = &sysctl_sched_dl_period_min,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "sched_rr_timeslice_ms",
.data = &sysctl_sched_rr_timeslice,