From 988f11e046401f8561c4afefa506a50f0203de40 Mon Sep 17 00:00:00 2001 From: liaohua Date: Thu, 7 Apr 2022 15:29:48 +0800 Subject: latencytop: move sysctl to its own file This moves latencytop sysctl to kernel/latencytop.c Signed-off-by: liaohua Signed-off-by: Luis Chamberlain --- kernel/latencytop.c | 41 +++++++++++++++++++++++++++++------------ 1 file changed, 29 insertions(+), 12 deletions(-) (limited to 'kernel/latencytop.c') diff --git a/kernel/latencytop.c b/kernel/latencytop.c index 166d7bf49666..76166df011a4 100644 --- a/kernel/latencytop.c +++ b/kernel/latencytop.c @@ -55,6 +55,7 @@ #include #include #include +#include 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); -- cgit